Document:

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                                                                    EXHIBIT 10.B

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                              BRIDGE LOAN AGREEMENT

                           Dated as of April 23, 2002

                                      among

                          MENTOR GRAPHICS CORPORATION,

                             BANK OF AMERICA, N.A.,

                                    as Agent,

                                       and

                  THE OTHER FINANCIAL INSTITUTIONS PARTY HERETO

                                   Arranged by

                         BANC OF AMERICA SECURITIES LLC

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                                TABLE OF CONTENTS

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ARTICLE I     DEFINITIONS...................................................................1

    1.01      Certain Defined Terms.........................................................1

    1.02      Other Interpretive Provisions................................................18

    1.03      Accounting Principles........................................................18

    1.04      Designation of Unrestricted Subsidiaries.....................................19

ARTICLE II    THE CREDITS..................................................................19

    2.01      Amounts and Terms of Commitments.............................................19

    2.02      Loan Accounts................................................................20

    2.03      Procedure for Borrowing......................................................20

    2.04      Conversion and Continuation Elections........................................21

    2.05      Voluntary Termination or Reduction of Commitments............................22

    2.06      Prepayments..................................................................22

    2.07      Repayment....................................................................23

    2.08      Interest.....................................................................23

    2.09      Fees.........................................................................23

    2.10      Computation of Fees and Interest.............................................24

    2.11      Payments by the Company......................................................24

    2.12      Payments by the Banks to the Agent...........................................25

    2.13      Sharing of Payments, Etc.....................................................25

ARTICLE III   TAXES, YIELD PROTECTION AND ILLEGALITY.......................................26

    3.01      Taxes........................................................................26

    3.02      Illegality...................................................................27

    3.03      Increased Costs and Reduction of Return......................................27

    3.04      Funding Losses...............................................................28

    3.05      Inability to Determine Rates.................................................29

    3.06      Reserves on Offshore Rate Loans..............................................29

    3.07      Certificates of Banks........................................................29

    3.08      Delay........................................................................29

    3.09      Substitution of Banks........................................................30
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    3.10      Survival.....................................................................30

ARTICLE IV    CONDITIONS PRECEDENT.........................................................30

    4.01      Conditions to Effectiveness of Agreement.....................................30

    4.02      Conditions to All Borrowings and to Conversion/Continuation of Loans.........31

    4.03      Additional Conditions Precedent to Initial Loans.............................32

ARTICLE V     REPRESENTATIONS AND WARRANTIES...............................................32

    5.01      Corporate Existence and Power................................................32

    5.02      Corporate Authorization; No Contravention....................................33

    5.03      Governmental Authorization...................................................33

    5.04      Binding Effect...............................................................33

    5.05      Litigation...................................................................33

    5.06      No Default...................................................................34

    5.07      ERISA Compliance.............................................................34

    5.08      Use of Proceeds; Margin Regulations..........................................35

    5.09      Title to Properties..........................................................35

    5.10      Taxes........................................................................35

    5.11      Financial Condition..........................................................35

    5.12      Environmental Matters........................................................35

    5.13      Regulated Entities...........................................................36

    5.14      No Burdensome Restrictions...................................................36

    5.15      Copyrights, Patents, Trademarks and Licenses, etc............................36

    5.16      Subsidiaries.................................................................36

    5.17      Insurance....................................................................36

    5.18      Swap Obligations.............................................................36

    5.19      Full Disclosure..............................................................37

ARTICLE VI    AFFIRMATIVE COVENANTS........................................................37

    6.01      Financial Statements.........................................................37

    6.02      Certificates; Other Information..............................................37
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    6.03      Notices......................................................................38

    6.04      Preservation of Corporate Existence, Etc.....................................39

    6.05      Maintenance of Property......................................................40

    6.06      Insurance....................................................................40

    6.07      Payment of Obligations.......................................................40

    6.08      Compliance with Laws.........................................................40

    6.09      Compliance with ERISA........................................................40

    6.10      Inspection of Property and Books and Records.................................40

    6.11      Environmental Laws...........................................................41

    6.12      Use of Proceeds..............................................................41

    6.13      IKOS Acquisition.............................................................41

    6.14      Innoveda Acquisition.........................................................41

ARTICLE VII   NEGATIVE COVENANTS...........................................................41

    7.01      Limitation on Liens..........................................................41

    7.02      Disposition of Assets........................................................43

    7.03      Consolidations and Mergers...................................................45

    7.04      Loans and Investments........................................................45

    7.05      Limitation on Indebtedness...................................................46

    7.06      Transactions with Affiliates.................................................47

    7.07      Use of Proceeds..............................................................47

    7.08      Contingent Obligations.......................................................48

    7.09      Lease Obligations............................................................48

    7.10      Restricted Payments..........................................................49

    7.11      ERISA........................................................................49

    7.12      Change in Business...........................................................49

    7.13      Accounting Changes...........................................................49

    7.14      Financial Covenants..........................................................49

    7.15      Amendments to Terms of Innoveda Acquisition..................................51

ARTICLE VIII  EVENTS OF DEFAULT............................................................51
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    8.01      Event of Default.............................................................51

    8.02      Remedies.....................................................................53

    8.03      Rights Not Exclusive.........................................................53

ARTICLE IX    THE AGENT....................................................................53

    9.01      Appointment and Authorization of Agent.......................................53

    9.02      Delegation of Duties.........................................................54

    9.03      Liability of Agent...........................................................54

    9.04      Reliance by Agent............................................................54

    9.05      Notice of Default............................................................55

    9.06      Credit Decision; Disclosure of Information by Agent..........................55

    9.07      Indemnification of Agent.....................................................56

    9.08      Agent in its Individual Capacity.............................................56

    9.09      Successor Agent..............................................................56

ARTICLE X     MISCELLANEOUS................................................................57

    10.01     Amendments, Etc..............................................................57

    10.02     Notices and Other Communications; Facsimile Copies...........................58

    10.03     No Waiver; Cumulative Remedies...............................................59

    10.04     Attorney Costs, Expenses and Taxes...........................................59

    10.05     Indemnification by the Company...............................................59

    10.06     Payments Set Aside...........................................................60

    10.07     Successors and Assigns.......................................................60

    10.08     Confidentiality..............................................................62

    10.09     Set-off......................................................................63

    10.10     Automatic Debits of Fees.....................................................63

    10.11     Interest Rate Limitation.....................................................63

    10.12     Counterparts.................................................................63

    10.13     Integration..................................................................64

    10.14     Survival of Representations and Warranties...................................64

    10.15     Severability.................................................................64
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    10.16     Tax Forms....................................................................64

    10.17     Governing Law................................................................65

    10.18     Waiver of Right to Trial by Jury.............................................65
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                                TABLE OF CONTENTS
                                   (continued)

SCHEDULES
Schedule 2.01 Commitments and Pro Rata Shares
Schedule 5.05 Litigation
Schedule 5.07 ERISA
Schedule 5.12 Environmental Matters
Schedule 5.15 Intellectual Property Matters
Schedule 5.16 Subsidiaries and Equity Investments
Schedule 5.17 Insurance Matters
Schedule 7.01 Permitted Liens
Schedule 7.02 Permitted Asset Dispositions
Schedule 7.04 Permitted Investments
Schedule 7.05 Permitted Indebtedness
Schedule 7.08 Contingent Obligations
Schedule 10.02 Offshore and Domestic Lending Offices, Addresses for Notices

EXHIBITS
Exhibit A         Form of Notice of Borrowing
Exhibit B         Form of Notice of Conversion/Continuation
Exhibit C         Form of Compliance Certificate
Exhibit D-1       Form of Opinion of General Counsel of Company
Exhibit D-2       Form of Opinion of Latham & Watkins
Exhibit E         Form of Assignment and Assumption
Exhibit F         Form of Promissory Note
Exhibit G         Form of Notice of Designation of Unrestricted Subsidiary

                                       vi

<PAGE>

                              BRIDGE LOAN AGREEMENT
                              ---------------------

          This BRIDGE LOAN AGREEMENT is entered into as of April 23, 2002, among
Mentor Graphics Corporation, an Oregon corporation (the "Company"), the several
                                                         -------
financial institutions from time to time party to this Agreement (collectively,
the "Banks"; individually, a "Bank"), and Bank of America, N.A., as
     -----                    ----
administrative agent for the Banks.

          WHEREAS, the Banks have agreed to make available to the Company bridge
loans upon the terms and conditions set forth in this Agreement;

          NOW, THEREFORE, in consideration of the mutual agreements, provisions
and covenants contained herein, the parties agree as follows:

                                    ARTICLE I

                                   DEFINITIONS
                                   -----------

     1.01 Certain Defined Terms. The following terms have the following
     meanings:

          "Acquisition" means any transaction or series of related transactions
           -----------
     for the purpose of or resulting, directly or indirectly, in (a) the
     acquisition of all or substantially all of the assets of a Person, or of
     any line of business or division of a Person; (b) the acquisition of in
     excess of 50% of the capital stock, partnership interests, membership
     interests or equity of any Person, or otherwise causing any Person to
     become a Subsidiary; or (c) a merger or consolidation or any other
     combination with another Person (other than a Person that is a Subsidiary)
     provided that the Company or the Subsidiary is the surviving entity.

          "Affiliate" means, with respect to any Person, another Person that
           ---------
     directly, or indirectly through one or more intermediaries, Controls or is
     Controlled by, or is under common Control with the Person specified.
     Control means the possession, directly or indirectly, of the power to
     direct or cause the direction of the management or policies of a Person,
     whether through the ability to exercise voting power, by contract, or
     otherwise.

          "Agent" means Bank of America in its capacity as administrative agent
           -----
     for the Banks hereunder, and any successor administrative agent arising
     under Section 9.09.

          "Agent-Related Persons" means the Agent (including any successor
           ---------------------
     administrative agent arising under Section 9.09), together with its
     Affiliates (including, in the case of Bank of America, the Arranger), and
     the officers, directors, employees, agents and attorneys-in-fact of such
     Persons and Affiliates.

          "Agent's Payment Office" means the address for payments set forth in
           ----------------------
     Schedule 10.02 or such other address as the Agent may from time to time
     --------------
     specify.

          "Agreement" means this Credit Agreement.
           ---------

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          "Applicable Margin" means (a) with respect to Offshore Rate Loans (i)
           -----------------
     2.50% for the period from and including the Closing Date to but excluding
     August 1, 2002, (ii) 3.25% for the period from and including August 1, 2002
     to but excluding September 15, 2002, and (iii) 4.25% thereafter; and (b)
     with respect to Base Rate Loans, (i) 1.25% for the period from and
     including the Closing Date to but excluding August 1, 2002, (ii) 2.00% for
     the period from and including August 1, 2002 to but excluding September 15,
     2002, and (iii) 3.00% thereafter.

          "Arranger" means Banc of America Securities LLC.
           --------

          "ATI" means Accelerated Technology Inc.
           ---

          "ATI Acquisition" means the Acquisition of ATI by the Company or a
           ---
     Subsidiary.

          "Attorney Costs" means and includes all fees and disbursements of any
           --------------
     law firm or other external counsel, the allocated cost of internal legal
     services and all disbursements of internal counsel.

          "Attributable Indebtedness" means, on any date, (a) in respect of any
           -------------------------
     capital lease of any Person, the capitalized amount thereof that would
     appear on a balance sheet of such Person prepared as of such date in
     accordance with GAAP; and (b) in respect of any Synthetic Lease Obligation,
     the capitalized amount of the remaining lease payments under the relevant
     lease that would appear on a balance sheet of such Person prepared as of
     such date in accordance with GAAP if such lease were accounted for as a
     capital lease.

          "Bank" has the meaning specified in the introductory clause hereto.
           ----

          "Bank of America" means Bank of America, N.A., a national banking
           ---------------
     association.

          "Bankruptcy Code" means the Federal Bankruptcy Reform Act of 1978 (11
           ---------------
     U.S.C. (S) 101, et seq.).
                     ------

          "Base Rate" means for any day a fluctuating rate per annum equal to
           ---------
     the higher of (a) the Federal Funds Rate plus 1/2 of 1%; and (b) the rate
     of interest in effect for such day as publicly announced from time to time
     by Bank of America as its "prime rate." Such rate is a rate set by Bank of
     America based upon various factors including Bank of America's costs and
     desired return, general economic conditions and other factors, and is used
     as a reference point for pricing some loans, which may be priced at, above,
     or below such announced rate. Any change in such rate announced by Bank of
     America shall take effect at the opening of business on the day specified
     in the public announcement of such change.

          "Base Rate Loan" means a Loan that bears interest based on the Base
           --------------
     Rate.

          "Borrowing" means a borrowing hereunder consisting of Loans of the
           ---------
     same Type made to the Company on the same day by the Banks under Article
     II, and, other than in the case of Base Rate Loans, having the same
     Interest Period.

                                       2

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          "Borrowing Date" means any date on which a Borrowing occurs under
           --------------
     Section 2.03.

          "Business Day" means any day other than a Saturday, Sunday or other
           ------------
     day on which commercial banks in New York City, San Francisco, California,
     or Portland, Oregon, are authorized or required by law to close and, if the
     applicable Business Day relates to any Offshore Rate Loan, means such a day
     on which dealings are carried on in the applicable offshore dollar
     interbank market.

          "Capital Adequacy Regulation" means any guideline, request or
           ---------------------------
     directive of any central bank or other Governmental Authority, or any other
     law, rule or regulation, whether or not having the force of law, in each
     case, regarding capital adequacy of any bank or of any corporation
     controlling a bank.

          "Cash Equivalents" means:
           ----------------

          (a) securities issued or fully guaranteed or insured by the United
     States Government or any agency thereof having maturities of not more than
     12 months from the date of acquisition;

          (b) certificates of deposit, time deposits, Eurodollar time deposits,
     repurchase agreements, reverse repurchase agreements, or bankers'
     acceptances, having in each case a tenor of not more than 12 months, issued
     by (i) any U.S. commercial bank or any commercial bank organized under the
     laws of any other country which is a member of the Organization for
     Economic Cooperation and Development (but including, in any event,
     Singapore, Israel, India and Egypt), or a political subdivision of any such
     country, in each case having combined capital and surplus of not less than
     $100,000,000 and whose short-term securities are rated at least A-1 by
     Standard & Poor's Corporation ("S&P") or at least P-1 by Moody's Investor
     Service, Inc. ("Moody's"), or (ii) any Bank;

          (c) taxable and tax-exempt commercial paper of an issuer rated at
     least A-l by S&P or at least P-l by Moody's and in either case having a
     tenor of not more than 270 days;

          (d) medium term notes of an issuer rated at least AA by S&P or at
     least Aa2 by Moody's and having a remaining term of not more than 12 months
     after the date of acquisition by the Company or its Subsidiaries;

          (e) municipal notes and bonds which are rated at least SP-2 or AA by
     S&P or at least MIG-2 or Aa by Moody's with tenors of not more than 12
     months;

          (f) investments in taxable or tax-exempt money market funds with
     assets greater than $500,000,000 and whose assets have average maturities
     less than or equal to 180 days and are rated at least A-l by S&P or at
     least P-l by Moody's;

          (g) money market preferred instruments of an issuer rated at least A-1
     by S&P or at least P-1 by Moody's with tenors of not more than 12 months;
     or

                                       3

<PAGE>

          (h) other similar investments, subject to the Majority Banks' prior
     written approval.

          "Change of Control" means, with respect to any Person, an event or
           -----------------
     series of events by which:

          (a) any "person" or "group" (as such terms are used in Sections 13(d)
     and 14(d) of the Exchange Act, but excluding any employee benefit plan of
     such Person or its subsidiaries, and any Person or entity acting in its
     capacity as trustee, agent or other fiduciary or administrator of any such
     plan) becomes the "beneficial owner" (as defined in Rules 13d-3 and 13d-5
     under the Exchange Act, except that a person or group shall be deemed to
     have "beneficial ownership" of all securities that such person or group has
     the right to acquire (such right, an "option right"), so long as
                                           ------------
     exercisable within 60 days, directly or indirectly, of 35% or more of the
     equity securities of such Person entitled to vote for members of the board
     of directors or equivalent governing body of such Person; or

          (b) during any period of 12 consecutive months, a majority of the
     members of the board of directors or other equivalent governing body of
     such Person cease to be composed of individuals (i) who were members of
     that board or equivalent governing body on the first day of such period,
     (ii) whose election or nomination to that board or equivalent governing
     body was approved by individuals referred to in clause (i) above
     constituting at the time of such election or nomination at least a majority
     of that board or equivalent governing body or (iii) whose election or
     nomination to that board or other equivalent governing body was approved by
     individuals referred to in clauses (i) and (ii) above constituting at the
     time of such election or nomination at least a majority of that board or
     equivalent governing body.

          "Closing Date" means the date on which all conditions precedent set
           ------------
     forth in Section 4.01 are satisfied or waived by all Banks (or, in the case
     of subsection 4.01(e), waived by the Person entitled to receive such
     payment).

          "Code" means the Internal Revenue Code of 1986, and regulations
           ----
     promulgated thereunder.

          "Commitment", as to each Bank, has the meaning specified in Section
           ----------
     2.01.

          "Compliance Certificate" means a certificate substantially in the form
           ----------------------
     of Exhibit C.
        ---------

          "Consolidated EBITDA" means, for any period, for the Company and its
           -------------------
     Subsidiaries on a consolidated basis, an amount equal to the sum of (a)
     Consolidated Net Income; (b) Consolidated Interest Charges; (c) the amount
     of taxes, based on or measured by income, used or included in the
     determination of such Consolidated Net Income; (d) the amount of
     depreciation and amortization expense deducted in determining such
     Consolidated Net Income; (e) restructuring charges taken in the third and
     fourth fiscal quarters of fiscal year 2001 and the first fiscal quarter of
     fiscal year 2002; and (f) any Acquisition-related expenses, restructuring
     charges and write-offs (relating to in-process

                                       4

<PAGE>

     research and development, goodwill and other intangibles associated with
     the ATI Acquisition, the IKOS Acquisition or the Innoveda Acquisition)
     taken in the fiscal quarter in which consummation of the applicable
     Acquisition occurs or in the immediately following fiscal quarter.

          "Consolidated Funded Indebtedness" means, as of any date of
           --------------------------------
     determination, for the Company and its Subsidiaries on a consolidated
     basis, the sum of (a) the outstanding principal amount of all obligations,
     whether current or long-term, for borrowed money (including Obligations
     hereunder) and all obligations evidenced by bonds, debentures, notes, loan
     agreements or other similar instruments; (b) Attributable Indebtedness
     (other than that of ATI, IKOS and Innoveda) in respect of capital leases
     and Synthetic Lease Obligations; and (c) without duplication, all Guaranty
     Obligations with respect to Indebtedness of the types specified in
     subsections (a) and (b) above of Persons other than the Company or any
     Subsidiary, except with respect to automobile leasing programs for
     employees in Europe.

          "Consolidated Interest Charges" means, for any period, for the Company
           -----------------------------
     and its Subsidiaries on a consolidated basis, the sum of (a) all interest,
     premium payments, fees, charges and related expenses of the Company and its
     Subsidiaries in connection with borrowed money (including capitalized
     interest) or in connection with the deferred purchase price of assets, in
     each case to the extent treated as interest in accordance with GAAP; and
     (b) the portion of rent expense of the Company and its Subsidiaries with
     respect to such period under capital leases that is treated as interest in
     accordance with GAAP.

          "Consolidated Net Income" means, for any period, for the Company and
           -----------------------
     its Subsidiaries on a consolidated basis, the net income of the Company and
     its Subsidiaries.

          "Consolidated Tangible Net Worth" means, at any time of determination,
           -------------------------------
     in respect of the Company and its Subsidiaries, determined on a
     consolidated basis, total assets (exclusive of goodwill, trademarks, trade
     names, organization expense, treasury stock, unamortized debt discount and
     premium and other like intangibles) minus total liabilities (including
                                         -----
     accrued and deferred income taxes), at such time, all as determined in
     accordance with GAAP.

          "Contingent Obligation" means, as to any Person, any direct or
           ---------------------
     indirect liability of that Person, whether or not contingent, with or
     without recourse, (a) with respect to any Indebtedness, lease, dividend,
     letter of credit or other obligation (the "primary obligations") of another
     Person (the "primary obligor") including any obligation of that Person (i)
     to purchase, repurchase or otherwise acquire such primary obligations or
     any security therefor, (ii) to advance or provide funds for the payment or
     discharge of any such primary obligation or to maintain working capital or
     equity capital of the primary obligor or otherwise to maintain the net
     worth or solvency or any balance sheet item, level of income or financial
     condition of the primary obligor, (iii) to purchase property, securities or
     services primarily for the purpose of assuring the owner of any such
     primary obligation of the ability of the primary obligor to make payment of
     such primary obligation, or (iv) otherwise to assure or hold harmless the
     holder of any such primary

                                       5

<PAGE>

     obligation against loss in respect thereof (each, a "Guaranty Obligation");
                                                          -------------------
     (b) with respect to any Surety Instrument issued for the account of that
     Person or as to which that Person is otherwise liable for reimbursement of
     drawings or payments; (c) to purchase any materials, supplies or other
     property from, or to obtain the services of, another Person if the relevant
     contract or other related document or obligation requires that payment for
     such materials, supplies or other property, or for such services, shall be
     made regardless of whether delivery of such materials, supplies or other
     property is ever made or tendered, or such services are ever performed or
     tendered; or (d) in respect of any Swap Contract. The amount of any
     Contingent Obligation shall, in the case of Guaranty Obligations, be deemed
     equal to the stated or determinable amount of the primary obligation at the
     time of such determination in respect of which such Guaranty Obligation is
     made or, if not stated or if indeterminable, the maximum reasonably
     anticipated liability in respect thereof at the time of such determination,
     and in the case of other Contingent Obligations other than in respect of
     Swap Contracts, shall be equal to the maximum reasonably anticipated
     liability in respect thereof and, in the case of Contingent Obligations in
     respect of Swap Contracts, shall be equal to the Swap Termination Value at
     the time of such determination.

          "Contractual Obligation" means, as to any Person, any provision of any
           ----------------------
     security issued by such Person or of any agreement, undertaking, contract,
     indenture, mortgage, deed of trust or other instrument, document or
     agreement to which such Person is a party or by which it or any of its
     property is bound.

          "Conversion/Continuation Date" means any date on which, under Section
           ----------------------------
     2.04, the Company (a) converts Loans of one Type to another Type; or (b)
     continues as Loans of the same Type, but with a new Interest Period, Loans
     having Interest Periods expiring on such date.

          "Default" means any event or circumstance which, with the giving of
           -------
     notice, the lapse of time, or both, would (if not cured or otherwise
     remedied during such time) constitute an Event of Default.

          "Dollars", "dollars" and "$" each mean lawful money of the United
           -------    -------       -
     States.

          "Eligible Assignee" means (a) a commercial bank organized under the
           -----------------
     laws of the United States, or any state thereof, and having a combined
     capital and surplus of at least $100,000,000; (b) a commercial bank
     organized under the laws of any other country which is a member of the
     Organization for Economic Cooperation and Development, or a political
     subdivision of any such country, and having a combined capital and surplus
     of at least $100,000,000, provided that such bank is acting through a
     branch or agency located in the United States; (c) a Person that is
     primarily engaged in the business of commercial banking and that is (i) a
     Subsidiary of an Initial Bank or Eligible Assignee, (ii) a Subsidiary of a
     Person of which an Initial Bank or Eligible Assignee is a Subsidiary, or
     (iii) a Person of which an Initial Bank or Eligible Assignee is a
     Subsidiary; and (d) a Fund.

                                       6

<PAGE>

          "Environmental Claims" means all claims, however asserted, by any
           --------------------
     Governmental Authority or other Person alleging potential liability or
     responsibility for violation of any Environmental Law, including for
     release or injury to the environment.

          "Environmental Laws" means all federal, state or local laws, statutes,
           ------------------
     common law duties, rules, regulations, ordinances and codes, together with
     all administrative orders, directed duties, requests, licenses,
     authorizations and permits of, and agreements with, any Governmental
     Authorities, in each case relating to environmental, health, safety and
     land use matters.

          "ERISA" means the Employee Retirement Income Security Act of 1974, and
           -----
     regulations promulgated thereunder.

          "ERISA Affiliate" means any trade or business (whether or not
           ---------------
     incorporated) under common control with the Company within the meaning of
     Section 414(b) or (c) of the Code (and Sections 414(m) and (o) of the Code
     for purposes of provisions relating to Section 412 of the Code).

          "ERISA Event" means (a) a Reportable Event with respect to a Pension
           -----------
     Plan; (b) a withdrawal by the Company or any ERISA Affiliate from a Pension
     Plan subject to Section 4063 of ERISA during a plan year in which it was a
     substantial employer (as defined in Section 4001(a)(2) of ERISA) or a
     cessation of operations which is treated as such a withdrawal under Section
     4062(e) of ERISA; (c) a complete or partial withdrawal by the Company or
     any ERISA Affiliate from a Multiemployer Plan or notification that a
     Multiemployer Plan is in reorganization; (d) the filing of a notice of
     intent to terminate, the treatment of a Plan amendment as a termination
     under Section 4041 or 4041A of ERISA, or the commencement of proceedings by
     the PBGC to terminate a Pension Plan or Multiemployer Plan; (e) an event or
     condition which could reasonably be expected to constitute grounds under
     Section 4042 of ERISA for the termination of, or the appointment of a
     trustee to administer, any Pension Plan or Multiemployer Plan; or (f) the
     imposition of any liability under Title IV of ERISA in excess of
     $1,000,000, other than PBGC premiums due but not delinquent under Section
     4007 of ERISA, upon the Company or any ERISA Affiliate.

          "Event of Default" means any of the events or circumstances specified
           ----------------
     in Section 8.01.

          "Exchange Act" means the Securities Exchange Act of 1934, and
           ------------
     regulations promulgated thereunder.

          "Existing Credit Agreement" means the Credit Agreement dated as of
           -------------------------
     January 10, 2001 by and among the Company, Bank of America, as
     administrative agent, The Bank of Nova Scotia, as documentation agent,
     Fleet National Bank, N.A., as syndication agent, and the other lenders
     party thereto, as amended by the First Amendment to Credit Agreement dated
     as of January 24, 2002.

          "Federal Funds Rate" means, for any day, the rate per annum equal to
           ------------------
     the weighted average of the rates on overnight Federal funds transactions
     with members of

                                       7

<PAGE>

     the Federal Reserve System arranged by Federal funds brokers on such day,
     as published by the Federal Reserve Bank on the Business Day next
     succeeding such day; provided that (a) if such day is not a Business Day,
                          --------
     the Federal Funds Rate for such day shall be such rate on such transactions
     on the next preceding Business Day as so published on the next succeeding
     Business Day; and (b) if no such rate is so published on such next
     succeeding Business Day, the Federal Funds Rate for such day shall be the
     average rate charged to Bank of America on such day on such transactions as
     determined by the Agent.

          "Fee Letter" has the meaning specified in subsection 2.09(a).
           ----------

          "Foreign Bank" has the meaning specified in subsection 10.16(a).
           ------------

          "FRB" means the Board of Governors of the Federal Reserve System, and
           ---
     any Governmental Authority succeeding to any of its principal functions.

          "Fund" means any Person (other than a natural person) that is (or will
           ----
     be) engaged in making, purchasing, holding or otherwise investing in
     commercial loans and similar extensions of credit in the ordinary course of
     its business. "Approved Fund" means any Fund that is administered or
                    -------------
     managed by (a) a Bank; (b) an Affiliate of a Bank; or (c) an entity or an
     Affiliate of an entity that administers or manages a Bank.

          "Further Taxes" means any and all present or future taxes, levies,
           -------------
     assessments, imposts, duties, deductions, fees, withholdings or similar
     charges (including, without limitation, net income taxes and franchise
     taxes), and all liabilities with respect thereto, imposed by any
     jurisdiction on account of amounts payable or paid pursuant to Section
     3.01.

          "GAAP" means generally accepted accounting principles set forth from
           ----
     time to time in the opinions and pronouncements of the Accounting
     Principles Board and the American Institute of Certified Public Accountants
     and statements and pronouncements of the Financial Accounting Standards
     Board (or agencies with similar functions of comparable stature and
     authority within the U.S. accounting profession), which are applicable to
     the circumstances as of the date of determination.

          "Governmental Authority" means any nation or government, any state or
           ----------------------
     other political subdivision thereof, any central bank (or similar monetary
     or regulatory authority) thereof, any entity exercising executive,
     legislative, judicial, regulatory or administrative functions of or
     pertaining to government, and any corporation or other entity owned or
     controlled, through stock or capital ownership or otherwise, by any of the
     foregoing.

          "Guaranty Obligation" has the meaning specified in the definition of
           -------------------
     "Contingent Obligation."

          "Hazardous Materials" means all explosive radioactive substances or
           -------------------
     wastes and all hazardous or toxic substances, wastes or other pollutants,
     including petroleum or petroleum distillates, asbestos or
     asbestos-containing materials, polychlorinated

                                       8

<PAGE>

     biphenyls, radon gas, infectious or medical wastes and all other substances
     or wastes of any nature regulated pursuant to any Environmental Law.

          "IKOS" means IKOS Systems, Inc., a Delaware corporation.
           ----

          "IKOS Acquisition" means the Acquisition of IKOS by the Company or a
           ----------------
     Subsidiary.

          "IKOS Acquisition Date" means the date that the Company or a
           ---------------------
     Wholly-Owned Subsidiary shall have acquired more than 50% of the
     outstanding shares of the capital stock of IKOS.

          "Indebtedness" of any Person means, without duplication, (a) all
           ------------
     indebtedness for borrowed money; (b) all obligations issued, undertaken or
     assumed as the deferred purchase price of property or services (other than
     trade payables entered into in the ordinary course of business on ordinary
     terms); (c) all non-contingent reimbursement or payment obligations with
     respect to Surety Instruments; (d) all obligations evidenced by notes,
     bonds, debentures or similar instruments, including obligations so
     evidenced incurred in connection with the acquisition of property, assets
     or businesses; (e) all indebtedness created or arising under any
     conditional sale or other title retention agreement, or incurred as
     financing, in either case with respect to property acquired by the Person
     (even though the rights and remedies of the seller or bank under such
     agreement in the event of default are limited to repossession or sale of
     such property); (f) all obligations with respect to capital leases; (g) all
     indebtedness referred to in clauses (a) through (f) above secured by (or
     for which the holder of such Indebtedness has an existing right, contingent
     or otherwise, to be secured by) any Lien upon or in property (including
     accounts and contracts rights) owned by such Person, even though such
     Person has not assumed or become liable for the payment of such
     Indebtedness; and (h) all Guaranty Obligations in respect of indebtedness
     or obligations of others of the kinds referred to in clauses (a) through
     (g) above; provided, however, that Indebtedness shall not include sales of
                --------  -------
     Permitted Receivables sold pursuant to Permitted Receivables Purchase
     Facilities and indemnification, recourse or repurchase obligations
     thereunder. For all purposes of this Agreement, the Indebtedness of any
     Person shall include all recourse Indebtedness of any partnership or joint
     venture in which such Person is a general partner or a joint venturer.

          "Indemnified Liabilities" has the meaning specified in Section 10.05.
           -----------------------

          "Indemnified Person" has the meaning specified in Section 10.05.
           ------------------

          "Independent Auditor" has the meaning specified in subsection 6.01(a).
           -------------------

          "Initial Bank" means a Bank party to this Agreement on the Closing
           ------------
     Date.

          "Innoveda" means Innoveda, Inc., a Delaware corporation.
           --------

          "Innoveda Acquisition" means the Acquisition of Innoveda by the
           --------------------
     Company or a Subsidiary.

                                       9

<PAGE>

          "Innoveda Acquisition Agreement" means the agreement between the
           ------------------------------
     Company and Innoveda pursuant to which the Innoveda Acquisition takes
     place.

          "Insolvency Proceeding" means, with respect to any Person, (a) any
           ---------------------
     case, action or proceeding with respect to such Person before any court or
     other Governmental Authority relating to bankruptcy, reorganization,
     insolvency, liquidation, receivership, dissolution, winding-up or relief of
     debtors; or (b) any general assignment for the benefit of creditors,
     composition, marshalling of assets for creditors, or other, similar
     arrangement in respect of its creditors generally or any substantial
     portion of its creditors; undertaken under U.S. Federal, state or foreign
     law, including the Bankruptcy Code.

          "Interest Payment Date" means, as to any Loan other than a Base Rate
           ---------------------
     Loan, the last day of each Interest Period applicable to such Loan and, as
     to any Base Rate Loan, the last Business Day of each calendar month.

          "Interest Period" means, as to any Offshore Rate Loan, the period
           ---------------
     commencing on the Borrowing Date of such Loan or on the
     Conversion/Continuation Date on which the Loan is converted into or
     continued as an Offshore Rate Loan, and ending on the date one month
     thereafter; provided that:
                 --------

          (i) if any Interest Period would otherwise end on a day that is not a
     Business Day, that Interest Period shall be extended to the following
     Business Day unless, in the case of an Offshore Rate Loan, the result of
     such extension would be to carry such Interest Period into another calendar
     month, in which event such Interest Period shall end on the preceding
     Business Day;

          (ii) any Interest Period pertaining to an Offshore Rate Loan that
     begins on the last Business Day of a calendar month (or on a day for which
     there is no numerically corresponding day in the calendar month at the end
     of such Interest Period) shall end on the last Business Day of the calendar
     month at the end of such Interest Period; and

          (iii) no Interest Period for any Loan shall extend beyond October 31,
     2002.

          "IRS" means the Internal Revenue Service, and any Governmental
           ---
     Authority succeeding to any of its principal functions under the Code.

          "Lending Office" means, as to any Bank, the office or offices of such
           --------------
     Bank specified as its "Lending Office" or "Domestic Lending Office" or
     "Offshore Lending Office", as the case may be, set forth in Schedule 10.02,
                                                                 --------------
     or such other office or offices as such Bank may from time to time notify
     the Company and the Agent.

          "Lien" means any security interest, mortgage, deed of trust, pledge,
           ----
     hypothecation, assignment, charge or deposit arrangement, encumbrance, lien
     (statutory or other) or preferential arrangement of any kind or nature
     whatsoever in respect of any property (including those created by, arising
     under or evidenced by any conditional sale or other title retention
     agreement, the interest of a lessor under a capital lease, any financing
     lease having substantially the same economic effect as any of the
     foregoing, or the filing of any financing statement naming the owner of the
     asset to which such lien

                                       10

<PAGE>

     relates as debtor, under the Uniform Commercial Code or any comparable law)
     and any contingent or other agreement to provide any of the foregoing, but
     not including the interest of a lessor under an operating lease or the
     interest of a purchaser of Permitted Receivables under any Permitted
     Receivables Purchase Facility.

          "Loan" means an extension of credit by a Bank to the Company under
           ----
     Article II, and may be a Base Rate Loan or an Offshore Rate Loan (each, a
     "Type" of Loan).
      ----

          "Loan Documents" means this Agreement, any Notes, the Fee Letter and
           --------------
     all other documents delivered to the Agent or any Bank in connection
     herewith (other than the Existing Credit Agreement and any amendments
     thereto).

          "Majority Banks" means, as of any date of determination, at least two
           --------------
     Banks then holding more than 50% of the then aggregate unpaid principal
     amount of the Loans, or, if no such principal amount is then outstanding,
     at least two Banks then holding more than 50% of the Commitments.

          "Margin Stock" means "margin stock" as such term is defined in
           ------------
     Regulation T, U or X of the FRB.

          "Material Adverse Effect" means (a) a material adverse change in, or a
           -----------------------
     material adverse effect upon, the operations, business, properties,
     condition (financial or otherwise) of the Company and its Subsidiaries,
     taken as a whole; (b) a material impairment of the ability of the Company
     to perform under any Loan Document and to avoid any Event of Default; or
     (c) a material impairment of the rights of or benefits available to the
     Banks or the Agent under any Loan Document.

          "Material Subsidiary" means any Subsidiary which, for any period, has
           -------------------
     revenues or assets equal to or greater than 5% of the consolidated revenues
     or assets of the Company and its Subsidiaries, taken as a whole, but in any
     event shall not include any Unrestricted Subsidiary.

          "Multiemployer Plan" means a "multiemployer plan", within the meaning
           ------------------
     of Section 4001(a)(3) of ERISA, to which the Company or any ERISA Affiliate
     makes, is making, or is obligated to make contributions or, during the
     preceding three calendar years, has made, or been obligated to make,
     contributions.

          "Net Issuance Proceeds" means, as to any issuance of debt or equity by
           ---------------------
     any Person, cash proceeds and non-cash proceeds received or receivable by
     such Person in connection therewith, net of commissions, normal
     underwriting fees and discounts and reasonable out-of-pocket costs and
     expenses paid or incurred in connection therewith in favor of any Person
     not an Affiliate of such Person.

          "Net Sale Proceeds" means, with respect to any asset sale, cash
           -----------------
     payments (including any cash received by way of deferred payment pursuant
     to, or by monetization of, a note receivable or otherwise, but only as and
     when so received) received from such asset sale, net of any bona fide
     direct costs incurred in connection with such asset sale, including (a)
     income taxes reasonably estimated to be actually payable within two years

                                       11

<PAGE>

     of the date of such asset sale as a result of any gain recognized in
     connection therewith; and (b) payment of the outstanding principal amount
     of, premium or penalty, if any, and interest on any Indebtedness that is
     secured by a Lien on the stock or assets in question and that is required
     to be repaid under the terms thereof as a result of such asset sale.

          "Note" means a promissory note executed by the Company in favor of a
           ----
     Bank pursuant to subsection 2.02(b), in substantially the form of Exhibit
                                                                       -------
     F.
     -

          "Notice of Borrowing" means a notice in substantially the form of
           -------------------
     Exhibit A.
     ---------

          "Notice of Conversion/Continuation" means a notice in substantially
           ---------------------------------
     the form of Exhibit B.
                 ---------

          "Notice of Designation" has the meaning set forth in subsection
           ---------------------
     1.04(b).

          "Obligations" means all advances, debts, liabilities, obligations,
           -----------
     covenants and duties arising under any Loan Document owing by the Company
     to any Bank, the Agent, or any Indemnified Person, whether direct or
     indirect (including those acquired by assignment), absolute or contingent,
     due or to become due, now existing or hereafter arising and including
     interest that accrues after the commencement by or against the Company or
     any Affiliate thereof of any Insolvency Proceeding.

          "Offshore Rate" means, for any Interest Period, with respect to
           -------------
     Offshore Rate Loans:

          (a) the rate per annum equal to the rate determined by the Agent to be
     the offered rate that appears on the page of the Telerate screen (or any
     successor thereto) that displays an average British Bankers Association
     Interest Settlement Rate for deposits in Dollars (for delivery on the first
     day of such Interest Period) with a term equivalent to such Interest
     Period, determined as of approximately 11:00 a.m. (London time) two
     Business Days prior to the first day of such Interest Period; or

          (b) if the rate referenced in the preceding subsection (a) does not
     appear on such page or service or such page or service shall cease to be
     available, the rate per annum equal to the rate determined by the Agent to
     be the offered rate on such other page or other service that displays an
     average British Bankers Association Interest Settlement Rate for deposits
     in Dollars (for delivery on the first day of such Interest Period) with a
     term equivalent to such Interest Period, determined as of approximately
     11:00 a.m. (London time) two Business Days prior to the first day of such
     Interest Period; or

          (c) if the rates referenced in the preceding subsections (a) and (b)
     are not available, the rate per annum determined by the Agent as the rate
     of interest at which deposits in Dollars for delivery on the first day of
     such Interest Period in same day funds in the approximate amount of the
     Offshore Rate Loan being made, continued or converted by Bank of America
     and with a term equivalent to such Interest Period would be offered by Bank
     of America's London Branch to major banks in the London interbank offshore
     market at their request at approximately 4:00 p.m. (London time) two
     Business Days prior to the first day of such Interest Period.

                                       12

<PAGE>

          "Offshore Rate Loan" means a Loan that bears interest based on the
           ------------------
     Offshore Rate.

          "Organization Documents" means, (a) for any corporation, the
           ----------------------
     certificate or articles of incorporation, the bylaws, any certificate of
     determination or instrument relating to the rights of preferred
     shareholders of such corporation, any shareholder rights agreement, and all
     applicable resolutions of the board of directors (or any committee thereof)
     of such corporation; and (b) for any Person not a corporation, the
     partnership agreement, operating agreement and/or such other documents
     which govern such Person.

          "Other Taxes" means any present or future stamp, court or documentary
           -----------
     taxes or any other excise or property taxes, charges or similar levies
     which arise from any payment made hereunder or from the execution,
     delivery, performance, enforcement or registration of, or otherwise with
     respect to, this Agreement or any other Loan Documents.

          "Participant" has the meaning specified in subsection 10.07(d).
           -----------

          "PBGC" means the Pension Benefit Guaranty Corporation, or any
           ----
     Governmental Authority succeeding to any of its principal functions under
     ERISA.

          "Pension Plan" means a pension plan (as defined in Section 3(2) of
           ------------
     ERISA) subject to Title IV of ERISA which the Company sponsors, maintains,
     or to which it makes, is making, or is obligated to make contributions, or
     in the case of a multiple employer plan (as described in Section 4064(a) of
     ERISA) has made contributions at any time during the immediately preceding
     five (5) plan years.

          "Permitted Liens" has the meaning specified in Section 7.01.
           ---------------

          "Permitted Investments" means:
           ---------------------

               (a) securities issued or fully guaranteed or insured by the
          United States Government or any agency thereof having maturities of
          not more than three years from the date of acquisition;

               (b) certificates of deposit, time deposits, Eurodollar time
          deposits, repurchase agreements, reverse repurchase agreements, or
          bankers' acceptances, having in each case a tenor of not more than
          three years, issued by any U.S. commercial bank or any commercial bank
          organized under the laws of any other country which is a member of the
          Organization for Economic Cooperation and Development (but including,
          in any event, Singapore, Israel, India and Egypt), or a political
          subdivision of any such country, in each case having combined capital
          and surplus of not less than $100,000,000 and whose short-term
          securities are rated at least A-2 by Standard & Poor's Corporation
          ("S&P") or at least P-2 by Moody's Investor Service, Inc. ("Moody's");

                                       13

<PAGE>

               (c) taxable and tax-exempt commercial paper of an issuer rated at
          least A-2 by S&P or at least P-2 by Moody's and in either case having
          a tenor of not more than 270 days;

               (d) medium term notes of an issuer rated at least AA by S&P or at
          least Aa2 by Moody's and having a remaining term of not more than
          three years after the date of acquisition by the Company or its
          Subsidiaries;

               (e) municipal notes and bonds which are rated at least SP-2 or AA
          by S&P or at least MIG-2 or Aa by Moody's with tenors of not more than
          three years;

               (f) investments in taxable or tax-exempt money market funds with
          assets greater than $500,000,000 and whose assets have average
          maturities less than or equal to 180 days and are rated at least A-2
          by S&P or at least P-2 by Moody's;

               (g) money market preferred instruments of an issuer rated at
          least A-2 by S&P or at least P-2 by Moody's with tenors of not more
          than three years; or

               (h) other similar investments, subject to the Majority Banks'
          prior written approval.

          "Permitted Receivables" shall mean all obligations of any obligor
           ---------------------
     (whether now existing or hereafter arising) under a contract for sale of
     goods or services by the Company or any of its Subsidiaries, including any
     obligation of such obligor (whether now existing or hereafter arising) to
     pay interest, finance charges or amounts with respect thereto, and, with
     respect to any of the foregoing receivables or obligations, (a) all of the
     interest of the Company or any of its Subsidiaries in the goods (including
     returned goods) the sale of which gave rise to such receivable or
     obligation after the passage of title thereto to any obligor; (b) all other
     Liens and property subject thereto from time to time purporting to secure
     payment of such receivables or obligations; and (c) all guarantees,
     insurance, letters of credit and other agreements or arrangements of
     whatever character from time to time supporting or securing payment of any
     such receivables or obligations.

          "Permitted Receivables Purchase Facility" shall mean any agreement of
           ---------------------------------------
     the Company or any of its Subsidiaries providing for sales, transfers or
     conveyances of Permitted Receivables purporting to be sales (and considered
     sales under GAAP) that do not provide, directly or indirectly, for recourse
     against the seller of such Permitted Receivables (or against any of such
     seller's Affiliates) by way of a guaranty or any other support arrangement,
     with respect to the amount of such Permitted Receivables (based on the
     financial condition or circumstances of the obligor thereunder), other than
     such limited recourse as is reasonable given market standards for
     transactions of a similar type, taking into account such factors as product
     performance and product acceptance.

          "Permitted Swap Obligations" means all obligations (contingent or
           --------------------------
     otherwise) of the Company or any Subsidiary existing or arising under Swap
     Contracts, provided that each of the following criteria is satisfied: (a)
     such obligations are (or were) entered into

                                       14

<PAGE>

     by such Person in the ordinary course of business for the purpose of
     directly mitigating risks associated with liabilities, commitments or
     assets held by such Person, or changes in the value of securities issued by
     such Person in conjunction with a securities repurchase program not
     otherwise prohibited hereunder, and not for purposes of speculation or
     taking a "market view;" and (b) such Swap Contracts do not contain (i) any
     provision ("walk-away" provision) exonerating the non-defaulting party from
     its obligation to make payments on outstanding transactions to the
     defaulting party, or (ii) any provision creating or permitting the
     declaration of an event of default, termination event or similar event upon
     the occurrence of an Event of Default hereunder (other than an Event of
     Default under subsection 8.01(a)).

          "Person" means an individual, partnership, corporation, limited
           ------
     liability company, business trust, joint stock company, trust,
     unincorporated association, joint venture or Governmental Authority.

          "Plan" means an employee benefit plan (as defined in Section 3(3) of
           ----
     ERISA) which the Company sponsors or maintains or to which the Company
     makes, is making, or is obligated to make contributions and includes any
     Pension Plan.

          "Pro Rata Share" means, as to any Bank at any time, the percentage
           --------------
     equivalent (expressed as a decimal, rounded to the ninth decimal place) at
     such time of such Bank's Commitment divided by the combined Commitments of
     all Banks (or, if all Commitments have been terminated, the aggregate
     principal amount of such Bank's Loans divided by the aggregate principal
     amount of the Loans then held by all Banks).

          "Register" has the meaning specified in subsection 10.07(c).
           --------

          "Replacement Bank" has the meaning specified in Section 3.09.
           ----------------

          "Reportable Event" means, any of the events set forth in Section
           ----------------
     4043(c) of ERISA or the regulations thereunder, other than any such event
     for which the 30-day notice requirement under ERISA has been waived in
     regulations issued by the PBGC.

          "Requirement of Law" means, as to any Person, any law (statutory or
           ------------------
     common), treaty, rule or regulation or determination of an arbitrator or of
     a Governmental Authority, in each case applicable to or binding upon the
     Person or any of its property or to which the Person or any of its property
     is subject.

          "Responsible Officer" means the chief financial officer, the chief
           -------------------
     operating officer or the treasurer of the Company, or any other officer
     having substantially the same authority and responsibility; or, with
     respect to compliance with financial covenants, any of the above officers
     or the chief accounting officer of the Company, or any other officer having
     substantially the same authority and responsibility.

          "SEC" means the Securities and Exchange Commission, or any
           ---
     Governmental Authority succeeding to any of its principal functions.

                                       15

<PAGE>

          "Subordinated Indebtedness" means Indebtedness incurred from time to
           -------------------------
     time and subordinated in right of payment to the Obligations hereunder.

          "Subsidiary" of a Person means any corporation, association,
           ----------
     partnership, limited liability company, joint venture or other business
     entity of which more than 50% of the voting stock, membership interests or
     other equity interests (in the case of Persons other than corporations), is
     owned or controlled directly or indirectly by the Person, or one or more of
     the Subsidiaries of the Person, or a combination thereof, but in any event
     shall not include any Unrestricted Subsidiary other than for purposes of
     Sections 6.01, 7.07 and 7.14(b). Unless the context otherwise clearly
     requires, references herein to a "Subsidiary" or to "Subsidiaries" refer to
     a Subsidiary or Subsidiaries of the Company.

          "Surety Instruments" means all letters of credit (including standby
           ------------------
     and commercial), banker's acceptances, bank guaranties, shipside bonds,
     surety bonds and similar instruments.

          "Swap Contract" means any agreement, whether or not in writing,
           -------------
     relating to any transaction that is a rate swap, basis swap, forward rate
     transaction, commodity swap, commodity option, equity or equity index swap
     or option, bond, note or bill option, interest rate option, forward foreign
     exchange transaction, cap, collar or floor transaction, currency swap,
     cross-currency rate swap, swaption, currency option or any other, similar
     transaction (including any option to enter into any of the foregoing) or
     any combination of the foregoing, and, unless the context otherwise clearly
     requires, any master agreement relating to or governing any or all of the
     foregoing.

          "Swap Termination Value" means, in respect of any one or more Swap
           ----------------------
     Contracts, after taking into account the effect of any legally enforceable
     netting agreement relating to such Swap Contracts, (a) for any date on or
     after the date such Swap Contracts have been closed out and termination
     value(s) determined in accordance therewith, such termination value(s), and
     (b) for any date prior to the date referenced in clause (a) the amount(s)
     determined as the mark-to-market value(s) for such Swap Contracts, as
     determined by the Company based upon one or more mid-market or other
     readily available quotations provided by any recognized dealer in such Swap
     Contracts (which may include any Bank).

          "Synthetic Lease Obligation" means the monetary obligation of a Person
           --------------------------
     under (a) a so-called synthetic, off-balance sheet or tax retention lease,
     or (b) an agreement for the use or possession of property creating
     obligations that do not appear on the balance sheet of such Person but
     which, upon the insolvency or bankruptcy of such Person, would be
     characterized as the indebtedness of such Person (without regard to
     accounting treatment).

          "Taxes" means any and all present or future taxes, levies,
           -----
     assessments, imposts, duties, deductions, fees, withholdings or similar
     charges, and all liabilities with respect thereto, excluding, in the case
     of each Bank and the Agent, respectively, (a) taxes imposed on or measured
     by its net income by the jurisdiction (or any political subdivision
     thereof) under the laws of which such Bank or the Agent, as the case may
     be, is

                                       16

<PAGE>

     organized or maintains a lending office; (b) withholding taxes imposed on
     amounts payable to a Bank (or the Agent) herewith at the time the Bank (or
     the Agent) became a party to this Agreement (irrespective of compliance
     with Section 10.16); and (c) any taxes attributed to the failure or
     inability of a Bank (or the Agent) to comply with Section 10.16; provided,
                                                                      --------
     however, that if a Bank (or the Agent) shall have complied with Section
     -------
     10.16 at the time it became a party to this Agreement, nothing in this
     Agreement shall relieve the Company of its obligation to pay any amounts
     pursuant to Section 3.01 in the event that, as a result of any change in
     any applicable law, treaty or governmental rule, regulation or order, or
     any change in the interpretation, administration or application thereof,
     subsequent to the date such Bank (or the Agent) became a party to this
     Agreement, the Bank (or the Agent) is no longer properly entitled to
     deliver forms, certificates or other evidence at a subsequent date
     establishing that the Bank (or the Agent) is entitled to an exemption from,
     or reduction of, withholding tax as described in Section 10.16.

          "Termination Date" means the earlier to occur of:
           ----------------

               (a) October 31, 2002; and

               (b) the date on which the Commitments terminate in accordance
          with the provisions of this Agreement.

          "Type" has the meaning specified in the definition of "Loan."
           ----

          "Unfunded Pension Liability" means the excess of a Plan's benefit
           --------------------------
     liabilities under Section 4001(a)(16) of ERISA, over the current value of
     that Plan's assets, determined in accordance with the assumptions used for
     funding the Pension Plan pursuant to Section 412 of the Code for the
     applicable plan year.

          "United States" and "U.S." each means the United States of America.
           -------------       ----

          "Unrestricted Subsidiary" shall mean any Subsidiary designated as such
           -----------------------
     by the Company in accordance with Section 1.04.

          "Wholly-Owned Subsidiary" means any corporation in which (other than
           -----------------------
     directors' qualifying shares required by law or other de minimis shares
     owned by third parties as required by law) 100% of the capital stock of
     each class having ordinary voting power, and 100% of the capital stock of
     every other class, in each case, at the time as of which any determination
     is being made, is owned, beneficially and of record, by the Company, or by
     one or more of the other Wholly-Owned Subsidiaries, or both.

          "Wilsonville Facility" means the Company's principal facility and
           --------------------
     headquarters located in Wilsonville, Oregon, and does not include any
     vacant land owned by the Company in Wilsonville, Oregon.

                                       17

<PAGE>

     1.02 Other Interpretive Provisions.
          -----------------------------

          (a) The meanings of defined terms are equally applicable to the
singular and plural forms of the defined terms.

          (b) The words "hereof," "herein," "hereunder" and similar words refer
to this Agreement as a whole and not to any particular provision of this
Agreement; and subsection, Section, Schedule and Exhibit references are to this
Agreement unless otherwise specified.

               (i) The term "documents" includes any and all instruments,
     documents, agreements, certificates, indentures, notices and other
     writings, however evidenced, whether in physical or electronic form.

               (ii) The term "including" is not limiting and means "including
     without limitation."

               (iii) In the computation of periods of time from a specified
     date to a later specified date, the word "from" means "from and
     including"; the words "to" and "until" each mean "to but excluding,"
     and the word "through" means "to and including."

          (c) Unless otherwise expressly provided herein, (i) references to
agreements (including this Agreement and the Existing Credit Agreement) and
other contractual instruments shall be deemed to include all subsequent
amendments and other modifications thereto, but only to the extent such
amendments and other modifications are not prohibited by the terms of any Loan
Document, and (ii) references to any statute or regulation are to be construed
as including all statutory and regulatory provisions consolidating, amending,
replacing, supplementing or interpreting the statute or regulation.

          (d) The captions and headings of this Agreement are for convenience of
reference only and shall not affect the interpretation of this Agreement.

          (e) This Agreement and other Loan Documents may use several different
limitations, tests or measurements to regulate the same or similar matters. All
such limitations, tests and measurements are cumulative and shall each be
performed in accordance with their terms. Unless otherwise expressly provided,
any reference to any action of the Agent or the Banks by way of consent,
approval or waiver shall be deemed modified by the phrase "in its/their sole
discretion."

          (f) This Agreement and the other Loan Documents are the result of
negotiations among and have been reviewed by counsel to the Agent, the Company
and the other parties, and are the products of all parties. Accordingly, they
shall not be construed against the Banks or the Agent merely because of the
Agent's or Banks' involvement in their preparation.

     1.03 Accounting Principles.
          ---------------------

          (a) Unless the context otherwise clearly requires, all accounting
terms not expressly defined herein shall be construed, and all financial
computations required under this Agreement shall be made, in accordance with
GAAP, consistently applied.

                                       18

<PAGE>

          (b) References herein to "fiscal year" and "fiscal quarter" refer to
such fiscal periods of the Company.

          (c) If the Company or the Majority Banks notify the Agent that the
Company or the Majority Banks, as the case may be, desire to amend any covenant
in Article VII or any definition relating thereto to eliminate the effect of any
change in GAAP occurring after the Closing Date on the operation of any such
covenant, then the Company's compliance with such covenant shall be determined
in accordance with GAAP as in effect immediately prior to such change in GAAP
until either such notice is withdrawn or such covenant or related definition is
amended in a manner reasonably satisfactory to the Company and the Majority
Banks.

     1.04 Designation of Unrestricted Subsidiaries.
          ----------------------------------------

          (a) The Company, at its option, may from time to time designate any
Subsidiary as an "Unrestricted Subsidiary" for purposes hereof in accordance
with the following: (i) any Subsidiary that is not a Material Subsidiary may be
designated by the Company as an Unrestricted Subsidiary in its sole discretion,
(ii) any Material Subsidiary may be designated by the Company as an Unrestricted
Subsidiary only with the prior written consent of the Majority Banks; provided,
                                                                      --------
however, no Subsidiary may be designated as an Unrestricted Subsidiary if (A)
-------
immediately after giving effect to any such designation, the aggregate revenues
or aggregate assets of all Unrestricted Subsidiaries shall exceed 15% of the
aggregate revenues or aggregate assets of the Company, its Subsidiaries and its
Unrestricted Subsidiaries, taken as a whole or (B) any Default or Event of
Default then exists or would result from any such designation.

          (b) Whenever the Company desires to designate a Subsidiary as an
Unrestricted Subsidiary, the Company shall provide to the Agent a Notice of
Designation of Unrestricted Subsidiary (a "Notice of Designation") in
                                           ---------------------
substantially the form of Exhibit G signed by a Responsible Officer. Subject to
                          ---------
the preceding subsection (a), any designation by the Company of an Unrestricted
Subsidiary shall become effective (i) in the case of any Subsidiary that is not
a Material Subsidiary, three Business Days after the Agent's receipt of a
completed Notice of Designation in respect of such Subsidiary, and (ii) in the
case of any Material Subsidiary, upon the written consent of the Majority Banks.
In the case of the preceding clause (ii), the Majority Banks shall use
good-faith efforts to consent to or deny the Company's request to designate a
Material Subsidiary as an Unrestricted Subsidiary within 30 days of the Agent's
receipt of a completed Notice of Designation in respect of such Material
Subsidiary.

                                   ARTICLE II

                                   THE CREDITS
                                   -----------

     2.01 Amounts and Terms of Commitments. Each Bank severally agrees, on the
          --------------------------------
terms and conditions set forth herein, to make loans to the Company from time to
time on any Business Day during the period from the Closing Date to the
Termination Date in an aggregate amount of $125,000,000, each such Bank
committing to lend the amount set forth opposite the name of such Bank on
Schedule 2.01 (such amount as the same may be reduced under Section 2.05 or as a
-------------
result of one or more assignments under Section 10.07 (but not as a result of
the making of any Loans), the Bank's "Commitment"); provided, however, that,
                                      ----------    --------  -------
after giving effect to any

                                       19

<PAGE>

Borrowing, the aggregate principal amount of all outstanding Loans shall not at
any time exceed the combined Commitments.

     2.02 Loan Accounts.
          -------------

          (a) The Loans made by each Bank shall be evidenced by one or more loan
accounts or records maintained by such Bank in the ordinary course of business.
The loan accounts or records maintained by the Agent and each Bank shall be
conclusive absent manifest error of the amount of the Loans made by the Banks to
the Company and the interest and payments thereon. Any failure so to record or
any error in doing so shall not, however, limit or otherwise affect the
obligation of the Company hereunder to pay any amount owing with respect to the
Loans.

          (b) Upon the request of any Bank made through the Agent, the Loans
made by such Bank may be evidenced by one or more Notes, instead of or in
addition to loan accounts. Each such Bank shall endorse on the schedules annexed
to its Note(s) the date, amount and maturity of each Loan made by it and the
amount of each payment of principal made by the Company with respect thereto.
Each such Bank is irrevocably authorized by the Company to endorse its Note(s)
and each Bank's record shall be conclusive absent manifest error; provided,
                                                                  --------
however, that the failure of a Bank to make, or an error in making, a notation
-------
thereon with respect to any Loan shall not limit or otherwise affect the
obligations of the Company hereunder or under any such Note to such Bank.

     2.03 Procedure for Borrowing.
          -----------------------

          (a) Each Borrowing shall be made upon the Company's irrevocable
written notice delivered to the Agent in the form of a Notice of Borrowing
(which notice must be received by the Agent prior to 9:00 a.m. (San Francisco
time)) (i) three Business Days prior to the requested Borrowing Date, in the
case of Offshore Rate Loans, or (ii) on the requested Borrowing Date, in the
case of Base Rate Loans, specifying:

                    (A) the amount of the Borrowing, which shall be in an
          aggregate minimum amount of $10,000,000, in the case of Offshore Rate
          Loans, or $5,000,000, in the case of Base Rate Loans, or any multiple
          of $1,000,000 in excess thereof;

                    (B) the requested Borrowing Date, which shall be a Business
          Day; and

                    (C) the Type of Loans comprising the Borrowing.

          (b) The Agent will promptly notify each Bank of its receipt of any
Notice of Borrowing and of the amount of such Bank's Pro Rata Share of that
Borrowing.

          (c) Each Bank will make the amount of its Pro Rata Share of each
Borrowing available to the Agent for the account of the Company at the Agent's
Payment Office by 11:00 a.m. (San Francisco time) on the Borrowing Date
requested by the Company in funds immediately available to the Agent. The
proceeds of all such Loans will then be made available

                                       20

<PAGE>

to the Company by the Agent at such office by crediting the account of the
Company on the books of the Agent with the aggregate of the amounts made
available to the Agent by the Banks and in like funds as received by the Agent.

          (d) After giving effect to any Borrowing, unless the Agent shall
otherwise consent, there may not be more than six Interest Periods in effect.

     2.04 Conversion and Continuation Elections.
          -------------------------------------

          (a) The Company may, upon irrevocable written notice to the Agent in
accordance with subsection 2.04(b):

               (i) elect, as of any Business Day, in the case of Base Rate
     Loans, or as of the last day of the applicable Interest Period, in the case
     of any other Type of Loans, to convert any such Loans (or any part thereof
     in an amount not less than $10,000,000, or that is in an integral multiple
     of $1,000,000 in excess thereof) into Loans of any other Type; or

               (ii) elect, as of the last day of the applicable Interest Period,
     to continue any Loans having Interest Periods expiring on such day (or any
     part thereof in an amount not less than $10,000,000, or that is in an
     integral multiple of $1,000,000 in excess thereof);

provided, that if at any time the aggregate amount of Offshore Rate Loans in
--------
respect of any Borrowing is reduced, by payment, prepayment, or conversion of
part thereof to be less than $10,000,000, such Offshore Rate Loans shall
automatically convert into Base Rate Loans, and on and after such date the right
of the Company to continue such Loans as, and convert such Loans into, Offshore
Rate Loans shall terminate.

          (b) The Company shall deliver a Notice of Conversion/Continuation to
be received by the Agent not later than 9:00 a.m. (San Francisco time) (i) three
Business Days in advance of the Conversion/Continuation Date, if the Loans are
to be converted into or continued as Offshore Rate Loans, and (ii) on the
Conversion/Continuation Date, if the Loans are to be converted into Base Rate
Loans, specifying:

                    (A) the proposed Conversion/Continuation Date;

                    (B) the aggregate amount of Loans to be converted or
          continued; and

                    (C) the Type of Loans resulting from the proposed conversion
          or continuation.

          (c) If upon the expiration of any Interest Period applicable to
Offshore Rate Loans, (i) the Company has failed to deliver a Notice of
Conversion/Continuation or (ii) any Default or Event of Default then exists, the
Company shall be deemed to have elected to convert such Offshore Rate Loans into
Base Rate Loans effective as of the expiration date of such Interest Period.

                                       21

<PAGE>

          (d) The Agent will promptly notify each Bank of its receipt of a
Notice of Conversion/Continuation, or, if no timely notice is provided by the
Company, the Agent will promptly notify each Bank of the details of any
automatic conversion. All conversions and continuations shall be made ratably
according to the respective outstanding principal amounts of the Loans with
respect to which the notice was given held by each Bank.

          (e) Unless the Majority Banks otherwise consent, during the existence
of a Default or Event of Default, the Company may not elect to have a Loan
converted into or continued as an Offshore Rate Loan.

          (f) After giving effect to any conversion or continuation of Loans,
unless the Agent shall otherwise consent, there may not be more than six
Interest Periods in effect.

     2.05 Voluntary Termination or Reduction of Commitments. The Company may,
          -------------------------------------------------
upon not less than five Business Days' prior notice to the Agent, terminate the
Commitments or permanently reduce the Commitments in whole (but not in part).
Once reduced in accordance with this Section, the Commitments may not be
increased. Any reduction of the Commitments shall be applied to each Bank
according to its Pro Rata Share. All accrued commitment fees to, but not
including the effective date of any reduction or termination of Commitments,
shall be paid on the effective date of such reduction or termination.

     2.06 Prepayments.
          -----------

          (a) Optional Prepayments. Subject to Section 3.04, the Company may, at
              --------------------
any time, (i) in the case of Offshore Rate Loans, upon not less than three
Business Days' irrevocable notice to the Agent, and (ii) in the case of Base
Rate Loans, upon irrevocable notice to the Agent given no later than 9:00 a.m.
(San Francisco time) on the date of prepayment, ratably prepay the Loans in
whole (but not in part). Such notice of prepayment shall specify the date and
amount of such prepayment. The Agent will promptly notify each Bank of its
receipt of any such notice, and of such Bank's Pro Rata Share of such
prepayment. If such notice is given by the Company, the Company shall make such
prepayment and the payment amount specified in such notice shall be due and
payable on the date specified therein, together with accrued interest to each
such date on the amount prepaid and any amounts required pursuant to Section
3.04.

          (b) Mandatory Prepayments and Mandatory Reductions of Commitments. The
              -------------------------------------------------------------
Loans shall be prepaid and/or the Commitments shall be permanently reduced:

               (i) on the date of receipt by or on behalf of the Company of the
     cash Net Issuance Proceeds of any new equity issued by the Company, in an
     aggregate amount equal to such cash Net Issuance Proceeds, excluding any
     equity issued pursuant to employee stock purchase or option programs or
     paid as dividends;

               (ii) on the date of receipt by or on behalf of the Company or any
     of its Subsidiaries of the cash Net Issuance Proceeds of Indebtedness
     (other than Indebtedness permitted under subsections 7.05(a) through (f)),
     in an aggregate amount equal to such Net Issuance Proceeds, excluding (A)
     factored receivables in an aggregate amount not to exceed $40,000,000 (net
     of any repurchase obligations) and (B) drawings under other Indebtedness in
     an aggregate amount not to exceed $10,000,000; and

                                    22

<PAGE>

               (iii) on the date of receipt by or on behalf of the Company or
     any of its Subsidiaries of the Net Sale Proceeds of the sale of the
     Wilsonville Facility, in an aggregate amount equal to such Net Sale
     Proceeds.

          (c) Amounts prepaid on the Loans pursuant to subsections (a) and (b)
above may not be reborrowed.

     2.07 Repayment. The Company shall repay to the Banks on the Termination
          ---------
Date the aggregate principal amount of Loans outstanding on such date.

     2.08 Interest.
          --------

          (a) Each Loan shall bear interest on the outstanding principal amount
thereof from the applicable Borrowing Date at a rate per annum equal to the
Offshore Rate or the Base Rate, as the case may be (and subject to the Company's
right to convert to other Types of Loans under Section 2.04), plus the
                                                              ----
Applicable Margin.

          (b) Interest on each Loan shall be paid in arrears on each Interest
Payment Date. Interest shall also be paid on the date of any prepayment of
Offshore Rate Loans under Section 2.06 for the portion of the Offshore Rate
Loans so prepaid and upon payment (including prepayment) in full thereof and,
during the existence of any Event of Default, interest shall be paid on demand
of the Agent at the request or with the consent of the Majority Banks.

          (c) Notwithstanding subsection (a) of this Section, if any amount of
principal of or interest on any Loan, or any other amount payable hereunder or
under any other Loan Document is not paid in full when due (whether at stated
maturity, by acceleration, demand or otherwise), the Company agrees to pay
interest on such unpaid principal or other amount, from the date such amount
becomes due until the date such amount is paid in full, and after as well as
before any entry of judgment thereon to the extent permitted by law, payable on
demand, at a fluctuating rate per annum equal to the Base Rate plus the
Applicable Margin, plus 2%.

          (d) Anything herein to the contrary notwithstanding, the obligations
of the Company to any Bank hereunder shall be subject to the limitation that
payments of interest shall not be required for any period for which interest is
computed hereunder, to the extent (but only to the extent) that contracting for
or receiving such payment by such Bank would be contrary to the provisions of
any law applicable to such Bank limiting the highest rate of interest that may
be lawfully contracted for, charged or received by such Bank, and in such event
the Company shall pay such Bank interest at the highest rate permitted by
applicable law.

     2.09 Fees.
          ----

          (a) Agency and Other Fees. The Company shall (i) pay an agency fee to
              ---------------------
the Agent for the Agent's own account, and (ii) pay certain other fees to the
Agent, in each case in the amounts and at the times specified in the Fee Letter.
Such fees shall be fully earned when paid and shall be nonrefundable for any
reason whatsoever.

          (b) Commitment Fees. The Company shall pay to the Agent for the
              ---------------
account of each Bank a commitment fee of 0.50% on the actual daily unused
portion of such Bank's

                                       23

<PAGE>

Commitment, computed on a quarterly basis in arrears on the last Business Day of
each calendar quarter. Such commitment fee shall accrue from the earlier of (i)
the initial Borrowing Date, and (ii) July 1, 2002, to but excluding the
Termination Date and shall be due and payable quarterly in arrears on the last
Business Day of each calendar quarter during such period, with the final payment
to be made on the Termination Date. The commitment fees provided in this
subsection shall accrue at all times after the above-mentioned commencement
date, including at any time during which one or more conditions in Article IV
are not met.

     2.10 Computation of Fees and Interest.
          --------------------------------

          (a) All computations of interest for Base Rate Loans when the Base
Rate is determined by Bank of America's prime rate shall be made on the basis of
a year of 365 or 366 days, as the case may be, and actual days elapsed. All
other computations of fees and interest shall be made on the basis of a 360-day
year and actual days elapsed (which results in more interest being paid than if
computed on the basis of a 365-day year). Interest shall accrue on each Loan for
the day on which the Loan is made, and shall not accrue on a Loan, or any
portion thereof, for the day on which the Loan or such portion is paid; provided
                                                                        --------
that any Loan that is repaid on the same day on which it is made shall bear
interest for one day.

          (b) Each determination of an interest rate by the Agent shall be
conclusive and binding on the Company and the Banks in the absence of manifest
error. The Agent will, at the request of the Company or any Bank, deliver to the
Company or the Bank, as the case may be, a statement showing the quotations used
by the Agent in determining any interest rate and the resulting interest rate.

     2.11 Payments by the Company.
          -----------------------

          (a) All payments to be made by the Company shall be made without
set-off, recoupment or counterclaim. Except as otherwise expressly provided
herein, all payments by the Company shall be made to the Agent for the account
of the Banks at the Agent's Payment Office, and shall be made in dollars and in
immediately available funds, no later than 11:00 a.m. (San Francisco time) on
the date specified herein. The Agent will promptly distribute to each Bank its
Pro Rata Share (or other applicable share as expressly provided herein) of such
payment in like funds as received. Any payment received by the Agent later than
11:00 a.m. (San Francisco time) shall be deemed to have been received on the
following Business Day and any applicable interest or fee shall continue to
accrue.

          (b) Subject to the provisions set forth in the definition of "Interest
Period" herein, whenever any payment is due on a day other than a Business Day,
such payment shall be made on the following Business Day, and such extension of
time shall in such case be included in the computation of interest or fees, as
the case may be.

          (c) Unless the Agent receives notice from the Company prior to the
date on which any payment is due to the Banks that the Company will not make
such payment in full as and when required, the Agent may assume that the Company
has made such payment in full to the Agent on such date in immediately available
funds and the Agent may (but shall not be so required), in reliance upon such
assumption, distribute to each Bank on such due date an amount

                                       24

<PAGE>

equal to the amount then due such Bank. If and to the extent the Company has not
made such payment in full to the Agent, each Bank shall repay to the Agent on
demand such amount distributed to such Bank, together with interest thereon at
the Federal Funds Rate for each day from the date such amount is distributed to
such Bank until the date repaid.

     2.12 Payments by the Banks to the Agent.
          ----------------------------------

          (a) Unless the Agent receives notice from a Bank on or prior to the
Closing Date or, with respect to any Borrowing after the Closing Date, at least
one Business Day prior to the date of such Borrowing, that such Bank will not
make available as and when required hereunder to the Agent for the account of
the Company the amount of that Bank's Pro Rata Share of the Borrowing, the Agent
may assume that each Bank has made such amount available to the Agent in
immediately available funds on the Borrowing Date and the Agent may (but shall
not be so required), in reliance upon such assumption, make available to the
Company on such date a corresponding amount. If and to the extent any Bank shall
not have made its full amount available to the Agent in immediately available
funds and the Agent in such circumstances has made available to the Company such
amount, that Bank shall on the Business Day following such Borrowing Date make
such amount available to the Agent, together with interest at the Federal Funds
Rate for each day during such period. A notice of the Agent submitted to any
Bank with respect to amounts owing under this subsection (a) shall be
conclusive, absent manifest error. If such amount is so made available, such
payment to the Agent shall constitute such Bank's Loan on the date of Borrowing
for all purposes of this Agreement. If such amount is not made available to the
Agent on the Business Day following the Borrowing Date, the Agent will notify
the Company of such failure to fund and, upon demand by the Agent, the Company
shall pay such amount to the Agent for the Agent's account, together with
interest thereon for each day elapsed since the date of such Borrowing, at a
rate per annum equal to the interest rate applicable at the time to the Loans
comprising such Borrowing. Such payment by the Company to the Agent shall be
without prejudice to the Company's rights, if any, against the Bank which failed
to fund.

          (b) The failure of any Bank to make any Loan on any Borrowing Date
shall not relieve any other Bank of any obligation hereunder to make a Loan on
such Borrowing Date, but no Bank shall be responsible for the failure of any
other Bank to make the Loan to be made by such other Bank on any Borrowing Date.

     2.13 Sharing of Payments, Etc. If, other than as expressly provided
          ------------------------
elsewhere herein, any Bank shall obtain on account of the Loans made by it any
payment (whether voluntary, involuntary, through the exercise of any right of
set-off, or otherwise) in excess of its ratable share (or other share
contemplated hereunder), such Bank shall immediately (a) notify the Agent of
such fact, and (b) purchase from the other Banks such participations in the
Loans made by them as shall be necessary to cause such purchasing Bank to share
the excess payment pro rata with each of them; provided, however, that if all or
                                               --------  -------
any portion of such excess payment is thereafter recovered from the purchasing
Bank, such purchase shall to that extent be rescinded and each other Bank shall
repay to the purchasing Bank the purchase price paid therefor, together with an
amount equal to such paying Bank's ratable share (according to the proportion of
(i) the amount of such paying Bank's required repayment to (ii) the total amount
so recovered from the purchasing Bank) of any interest or other amount paid or
payable by the purchasing Bank in

                                       25

<PAGE>

respect of the total amount so recovered. The Company agrees that any Bank so
purchasing a participation from another Bank may, to the fullest extent
permitted by law, exercise all its rights of payment (including the right of
set-off, but subject to Section 10.09) with respect to such participation as
fully as if such Bank were the direct creditor of the Company in the amount of
such participation. The Agent will keep records (which shall be conclusive and
binding in the absence of manifest error) of participations purchased under this
Section and will in each case notify the Banks following any such purchases or
repayments.

                                   ARTICLE III

                     TAXES, YIELD PROTECTION AND ILLEGALITY
                     --------------------------------------

     3.01 Taxes.
          -----

          (a) Any and all payments by the Company to each Bank or the Agent
under this Agreement and any other Loan Document shall be made free and clear
of, and without deduction or withholding for, any Taxes. In addition, the
Company shall pay all Other Taxes.

          (b) If the Company shall be required by law to deduct or withhold any
Taxes, Other Taxes or Further Taxes from or in respect of any sum payable
hereunder to any Bank or the Agent, then:

               (i) the sum payable shall be increased as necessary so that,
     after making all required deductions and withholdings (including deductions
     and withholdings applicable to additional sums payable under this Section),
     such Bank or the Agent, as the case may be, receives and retains an amount
     equal to the sum it would have received and retained had no such deductions
     or withholdings been made;

               (ii) the Company shall make such deductions and withholdings;

               (iii) the Company shall pay the full amount deducted or withheld
     to the relevant taxing authority or other authority in accordance with
     applicable law; and

               (iv) the Company shall also pay to each Bank or the Agent for the
     account of such Bank, at the time interest is paid, Further Taxes in the
     amount that the respective Bank specifies as necessary to preserve the
     after-tax yield the Bank would have received if such Taxes, Other Taxes or
     Further Taxes had not been imposed.

          (c) The Company agrees to indemnify and hold harmless each Bank and
the Agent for the full amount of (i) Taxes, (ii) Other Taxes, and (iii) Further
Taxes in the amount that the respective Bank specifies as necessary to preserve
the after-tax yield the Bank would have received if such Taxes, Other Taxes or
Further Taxes had not been imposed, and any liability (including penalties,
interest, additions to tax and expenses) arising therefrom or with respect
thereto, whether or not such Taxes, Other Taxes or Further Taxes were correctly
or legally asserted. Payment under this indemnification shall be made within 30
days after the date the Bank or the Agent makes written demand therefor.

                                       26

<PAGE>

          (d) Within 30 days after the date of any payment by the Company of
Taxes, Other Taxes or Further Taxes, the Company shall furnish to each Bank or
the Agent the original or a certified copy of a receipt evidencing payment
thereof, or other evidence of payment satisfactory to such Bank or the Agent.

          (e) If the Company is required to pay any amount to any Bank or the
Agent pursuant to subsection (b) or (c) of this Section, then such Bank shall
use reasonable efforts (consistent with legal and regulatory restrictions) to
change the jurisdiction of its Lending Office so as to eliminate any such
additional payment by the Company which may thereafter accrue, if such change in
the sole judgment of such Bank is not otherwise disadvantageous to such Bank.

     3.02 Illegality.
          ----------

          (a) If any Bank determines that the introduction of any Requirement of
Law, or any change in any Requirement of Law, or in the interpretation or
administration of any Requirement of Law, has made it unlawful, or that any
central bank or other Governmental Authority has asserted that it is unlawful,
for any Bank or its applicable Lending Office to make Offshore Rate Loans, then,
on notice thereof by the Bank to the Company through the Agent, any obligation
of that Bank to make Offshore Rate Loans shall be suspended until the Bank
notifies the Agent and the Company that the circumstances giving rise to such
determination no longer exist.

          (b) If a Bank determines that it is unlawful to maintain any Offshore
Rate Loan, the Company shall, upon its receipt of notice of such fact and demand
from such Bank (with a copy to the Agent), prepay in full such Offshore Rate
Loans of that Bank then outstanding, together with interest accrued thereon and
amounts required under Section 3.04, either on the last day of the Interest
Period thereof, if the Bank may lawfully continue to maintain such Offshore Rate
Loans to such day, or immediately, if the Bank may not lawfully continue to
maintain such Offshore Rate Loan. If the Company is required to so prepay any
Offshore Rate Loan, then concurrently with such prepayment, the Company shall
borrow from the affected Bank, in the amount of such repayment, a Base Rate
Loan.

          (c) If the obligation of any Bank to make or maintain Offshore Rate
Loans has been so terminated or suspended, the Company may elect, by giving
notice to the Bank through the Agent that all Loans which would otherwise be
made by the Bank as Offshore Rate Loans shall be instead Base Rate Loans.

          (d) Before giving any notice to the Agent under this Section, the
affected Bank shall designate a different Lending Office with respect to its
Offshore Rate Loans if such designation will avoid the need for giving such
notice or making such demand and will not, in the judgment of the Bank, be
illegal or otherwise disadvantageous to the Bank.

     3.03 Increased Costs and Reduction of Return.
          ---------------------------------------

          (a) If any Bank determines that, due to either (i) the introduction of
or any change (other than any change by way of imposition of or increase in
reserve requirements included in the calculation of the Offshore Rate) in or in
the interpretation of any law or regulation, or (ii) the compliance by that Bank
with any guideline or request from any central bank or other

                                       27

<PAGE>

Governmental Authority (whether or not having the force of law), there shall be
any increase in the cost to such Bank of agreeing to make or making, funding or
maintaining any Offshore Rate Loans, then the Company shall be liable for, and
shall from time to time, upon demand (with a copy of such demand to be sent to
the Agent), pay to the Agent for the account of such Bank, additional amounts as
are sufficient to compensate such Bank for such increased costs; provided,
                                                                 --------
however, that (x) this subsection 3.03(a) shall not apply to matters covered by
-------
Section 3.01 and (y) any increase, subsequent to the date a Bank (or the Agent)
became a party to this Agreement, in the rate or basis of computation of any tax
imposed on or measured by its net income by the jurisdiction (or any political
subdivisions thereof) under the laws of which such Bank or the Agent, as the
case may be, is organized or maintains a lending office shall not result in
increased costs for purposes of this subsection 3.03(a).

          (b) If any Bank shall have determined that (i) the introduction of any
Capital Adequacy Regulation, (ii) any change in any Capital Adequacy Regulation,
(iii) any change in the interpretation or administration of any Capital Adequacy
Regulation by any central bank or other Governmental Authority charged with the
interpretation or administration thereof, or (iv) compliance by the Bank (or its
Lending Office) or any corporation controlling the Bank with any Capital
Adequacy Regulation, affects or would affect the amount of capital required or
expected to be maintained by the Bank or any corporation controlling the Bank
and (taking into consideration such Bank's or such corporation's policies with
respect to capital adequacy and such Bank's desired return on capital)
determines that the amount of such capital is increased as a consequence of its
Commitment, loans, credits or obligations under this Agreement, then, upon
demand of such Bank to the Company through the Agent, the Company shall pay to
the Bank, from time to time as specified by the Bank, additional amounts
sufficient to compensate the Bank for such increase.

     3.04 Funding Losses. The Company shall reimburse each Bank and hold each
          --------------
Bank harmless from any loss or expense which the Bank may sustain or incur as a
consequence of:

          (a) the failure of the Company to make on a timely basis any payment
of principal of any Offshore Rate Loan;

          (b) the failure of the Company to borrow, continue or convert a Loan
after the Company has given (or is deemed to have given) a Notice of Borrowing
or a Notice of Conversion/Continuation;

          (c) the failure of the Company to make any prepayment in accordance
with any notice delivered under Section 2.06;

          (d) the prepayment (including pursuant to Section 2.06) or other
payment (including after acceleration thereof) of an Offshore Rate Loan on a day
that is not the last day of the relevant Interest Period; or

          (e) the automatic conversion under the proviso of subsection 2.04(a)
of any Offshore Rate Loan to a Base Rate Loan on a day that is not the last day
of the relevant Interest Period;

                                       28

<PAGE>

including any such loss or expense arising from the liquidation or reemployment
of funds obtained by it to maintain its Offshore Rate Loans or from fees payable
to terminate the deposits from which such funds were obtained. For purposes of
calculating amounts payable by the Company to the Banks under this Section and
under subsection 3.03(a), each Offshore Rate Loan made by a Bank (and each
related reserve, special deposit or similar requirement) shall be conclusively
deemed to have been funded at the LIBOR used in determining the Offshore Rate
for such Offshore Rate Loan by a matching deposit or other borrowing in the
interbank Eurodollar market for a comparable amount and for a comparable period,
whether or not such Offshore Rate Loan is in fact so funded.

     3.05 Inability to Determine Rates. If the Agent determines that for any
          ----------------------------
reason adequate and reasonable means do not exist for determining the Offshore
Rate for any requested Interest Period with respect to a proposed Offshore Rate
Loan, or that the Offshore Rate applicable pursuant to subsection 2.08(a) for
any requested Interest Period with respect to a proposed Offshore Rate Loan does
not adequately and fairly reflect the cost to the Banks of funding such Loan,
the Agent will promptly so notify the Company and each Bank. Thereafter, the
obligation of the Banks to make or maintain Offshore Rate Loans, as the case may
be, hereunder shall be suspended until the Agent revokes such notice in writing.
Upon receipt of such notice, the Company may revoke any Notice of Borrowing or
Notice of Conversion/Continuation then submitted by it. If the Company does not
revoke such Notice, the Banks shall make, convert or continue the Loans, as
proposed by the Company, in the amount specified in the applicable notice
submitted by the Company, but such Loans shall be made, converted or continued
as Base Rate Loans instead of Offshore Rate Loans.

     3.06 Reserves on Offshore Rate Loans. The Company shall pay to each Bank,
          -------------------------------
as long as such Bank shall be required under regulations of the FRB to maintain
reserves with respect to liabilities or assets consisting of or including
Eurocurrency funds or deposits (currently known as "Eurocurrency liabilities"),
additional costs on the unpaid principal amount of each Offshore Rate Loan equal
to the actual costs of such reserves allocated to such Loan by the Bank (as
determined by the Bank in good faith, which determination shall be conclusive
absent manifest error), payable on each date on which interest is payable on
such Loan, provided the Company shall have received at least 15 days' prior
written notice (with a copy to the Agent) of such additional interest from the
Bank. If a Bank fails to give notice 15 days prior to the relevant Interest
Payment Date, such additional interest shall be payable 15 days from receipt of
such notice.

     3.07 Certificates of Banks. Any Bank claiming reimbursement or compensation
          ---------------------
under this Article III shall deliver to the Company (with a copy to the Agent) a
certificate setting forth in reasonable detail the amount payable to the Bank
hereunder and such certificate shall be conclusive and binding on the Company in
the absence of manifest error.

     3.08 Delay. Failure or delay on the part of any Bank to demand compensation
          -----
under this Article III shall not constitute a waiver of such Bank's right to
demand such compensation; provided, that no Bank shall be entitled to
                          --------
compensation under this Article III for any increased costs or reductions
incurred or suffered with respect to any date unless such Bank shall have
notified the Company not more than 90 days after the later of (a) such date and
(b) the date on which such Bank shall have become aware of such costs or
reductions.

                                       29

<PAGE>

     3.09 Substitution of Banks. Upon the receipt by the Company from any Bank
          ---------------------
(an "Affected Bank") of a claim for compensation under Section 3.03 or if the
     -------------
Company is required to pay any amount to any Affected Bank or the Agent for the
account of an Affected Bank pursuant to subsection 3.01(b) or 3.01(c) and such
Affected Bank has not changed the jurisdiction of its Lending Office so as to
eliminate such additional payment by the Company within 30 days after a request
by the Company to effect such change, the Company may: (i) request the Affected
Bank to use its best efforts to obtain a replacement bank or financial
institution satisfactory to the Company (which shall, in any event, be an
Eligible Assignee) to acquire and assume all or a ratable part of all of such
Affected Bank's Loans and Commitment (a "Replacement Bank"), (ii) request one or
                                         ----------------
more of the other Banks to acquire and assume all or part of such Affected
Bank's Loans and Commitment, or (iii) designate a Replacement Bank. Any such
designation of a Replacement Bank under clause (i) or (iii) or of an existing
Bank under clause (ii) shall be subject to the prior written consent of the
Agent (which consent shall not be unreasonably withheld or delayed), and shall
be effected in accordance with all requirements for an assignment set forth in
Section 10.07 hereof. Without limiting the generality of the foregoing, the
Company agrees to pay to each Affected Bank any amounts arising under Section
3.04 by virtue of such Affected Bank's replacement on a date other than the last
day of an Interest Period, with respect to any Offshore Rate Loans then
outstanding.

     3.10 Survival. The agreements and obligations of the Company in this
          --------
Article III shall survive the payment of all other Obligations.

                                   ARTICLE IV

                              CONDITIONS PRECEDENT
                              --------------------

     4.01 Conditions to Effectiveness of Agreement. This Agreement shall not
          ----------------------------------------
become effective until the Agent shall have received, on or before the Closing
Date, all of the following, in form and substance reasonably satisfactory to the
Agent and each Bank, and in sufficient copies for each Bank:

          (a) Credit Agreement and Notes. This Agreement and the Notes, if any,
              --------------------------
executed by each party thereto;

          (b) Resolutions; Incumbency.
              -----------------------

               (i) Copies of the resolutions of the board of directors of the
     Company authorizing the transactions contemplated hereby, certified as of
     the Closing Date by the Secretary or an Assistant Secretary of the Company;
     and

               (ii) A certificate of the Secretary or Assistant Secretary of the
     Company certifying the names and true signatures of the officers of the
     Company authorized to execute and deliver this Agreement, and all other
     Loan Documents to be delivered by it hereunder;

          (c) Organization Documents; Good Standing. Each of the following
              -------------------------------------
documents:

                                       30

<PAGE>

               (i) the articles of incorporation and the bylaws of the Company
     as in effect on the Closing Date, certified by the Secretary or Assistant
     Secretary of the Company as of the Closing Date; and

               (ii) a status certificate for the Company from the Secretary of
     State of Oregon and a certificate of foreign qualification and good
     standing of the Company in California, in each case, as of a recent date,
     together with a bring-down certificate by facsimile, dated the Closing
     Date;

          (d) Legal Opinions. An opinion of Dean Freed, Vice President and
              --------------
General Counsel of the Company substantially in the form of Exhibit D-1 and of
Latham & Watkins substantially in the form of Exhibit D-2, each addressed to the
Agent and the Banks;

          (e) Payment of Fees. Evidence of payment by the Company of all accrued
              ---------------
and unpaid fees, costs and expenses to the extent then due and payable on the
Closing Date, together with Attorney Costs of the Agent to the extent invoiced
prior to or on the Closing Date; including any such costs, fees and expenses
arising under or referenced in Sections 2.09 and 10.04;

          (f) Certificate. A certificate signed by a Responsible Officer, dated
              -----------
as of the Closing Date, stating that:

               (i) the representations and warranties contained in Article V are
     true and correct on and as of such date, as though made on and as of such
     date;

               (ii) no Default or Event of Default exists or would result from
     the initial Borrowing; and

               (iii) there has occurred since December 31, 2001, no event or
     circumstance that has resulted or could reasonably be expected to result in
     a Material Adverse Effect;

          (g) Amendment of Existing Credit Agreement. An amendment to the
              --------------------------------------
Existing Credit Agreement, executed by the Company and Majority Banks (as such
terms are defined therein) reasonably satisfactory to the Banks and the Agent
permitting this Agreement, the Innoveda Acquisition and the issuance by the
Company of Subordinated Indebtedness;

          (h) Innoveda Acquisition. The Company shall have delivered to the
              --------------------
Agent executed copies of the Innoveda Acquisition Agreement and all other
material agreements and documents related to the Innoveda Acquisition and the
terms of the Innoveda Acquisition shall be reasonably satisfactory in all
material respects to the Agent, the Banks, and the Arranger; and

          (i) Other Documents. Such other approvals, opinions, documents or
              ---------------
materials as the Agent or any Bank may reasonably request.

     4.02 Conditions to All Borrowings and to Conversion/Continuation of Loans.
          --------------------------------------------------------------------
The obligation of each Bank to make any Loan to be made by it (including its
initial Loan) or to

                                       31

<PAGE>

continue or convert any Loan under Section 2.04 is subject to the satisfaction
of the following conditions precedent on the relevant Borrowing Date or the
Conversion/Continuation Date:

          (a) Notice of Borrowing or Conversion/Continuation. The Agent shall
              ----------------------------------------------
have received a Notice of Borrowing or a Notice of Conversion/Continuation, as
applicable;

          (b) Continuation of Representations and Warranties. The
              ----------------------------------------------
representations and warranties in Article V shall be true and correct in all
material respects on and as of such Borrowing Date or Conversion/Continuation
Date with the same effect as if made on and as of such Borrowing Date or
Conversion/Continuation Date (except to the extent such representations and
warranties expressly refer to an earlier date, in which case they shall be true
and correct as of such earlier date); and

          (c) No Existing Default. No Default or Event of Default shall exist or
              -------------------
shall result from such Borrowing or continuation or conversion.

Each Notice of Borrowing and Notice of Conversion/Continuation submitted by the
Company hereunder shall constitute a representation and warranty by the Company
hereunder, as of the date of each such notice and as of each Borrowing Date or
Conversion/Continuation Date, as applicable, that the conditions in this Section
4.02 are satisfied.

     4.03 Additional Conditions Precedent to Initial Loans. Without limiting the
          ------------------------------------------------
operation of the preceding Sections 4.01 and 4.02, the obligation of each Bank
to make its initial Loans hereunder is subject to the additional conditions
precedent that (a) the Company shall have acquired and/or have tendered to it
and/or have pledged to it under a binding shareholder agreement more than 50% of
the issued and outstanding capital stock of Innoveda in accordance with the
terms and conditions of the Innoveda Acquisition Agreement; (b) any material
changes to the terms of the Innoveda Acquisition since the Closing Date shall be
reasonably satisfactory to the Agent and Majority Banks; (c) all governmental
and third-party approvals necessary in connection with the Innoveda Acquisition
shall have been obtained and be in full force and effect and all applicable
waiting periods shall have expired without notice of any action being taken or
threatened by any competent authority which would restrain, prevent or otherwise
impose material adverse conditions on the Innoveda Acquisition; and (d) the
Company shall have delivered to the Agent executed copies of all amendments or
supplements to the Innoveda Acquisition Agreement and all other material
agreements and documents related to the Innoveda Acquisition not previously
delivered to the Agent, including but not limited to any tender offer materials
and other documents filed with the SEC.

                                    ARTICLE V

                         REPRESENTATIONS AND WARRANTIES
                         ------------------------------

          The Company represents and warrants to the Agent and each Bank that:

     5.01 Corporate Existence and Power. The Company and each of its Material
          -----------------------------
Subsidiaries:

                                       32

<PAGE>

          (a) is an entity duly organized, validly existing and, if applicable
in such jurisdiction, in good standing under the laws of the jurisdiction of its
incorporation or other establishment;

          (b) has (i) the power and authority and (ii) all governmental
licenses, authorizations, consents and approvals, in each case, to own its
assets, carry on its business and to execute, deliver, and perform its
obligations under the Loan Documents to which it is a party;

          (c) is duly qualified as a foreign corporation or other entity and is
licensed and in good standing under the laws of each jurisdiction where its
ownership, lease or operation of property or the conduct of its business
requires such qualification or license; and

          (d) is in compliance with all Requirements of Law; except, in each
case referred to in clause (b)(ii), clause (c) or clause (d), to the extent that
the failure to do so is not reasonably expected to have a Material Adverse
Effect.

     5.02 Corporate Authorization; No Contravention. The execution, delivery and
          -----------------------------------------
performance by the Company of this Agreement and each other Loan Document to
which the Company is party, have been duly authorized by all necessary corporate
action, and do not and will not:

          (a) contravene the terms of any of the Company's Organization
Documents;

          (b) conflict with or result in any breach or contravention of, or the
creation of any Lien under, any document evidencing any Contractual Obligation
to which the Company is a party or any order, injunction, writ or decree of any
Governmental Authority to which the Company or its property is subject; or

          (c) violate any Requirement of Law;

          except, in each case referred to in the foregoing clauses (b) and (c),
where the conflict, breach, contravention, creation or violation would not
reasonably be expected to have a Material Adverse Effect.

     5.03 Governmental Authorization. No approval, consent, exemption,
          --------------------------
authorization, or other action by, or notice to, or filing with, any
Governmental Authority is necessary or required in connection with the
execution, delivery or performance by, or enforcement against, the Company of
this Agreement or any other Loan Document.

     5.04 Binding Effect. This Agreement and each other Loan Document to which
          --------------
the Company is a party constitute the legal, valid and binding obligations of
the Company, enforceable against the Company in accordance with their respective
terms, except as enforceability may be limited by applicable bankruptcy,
insolvency, or similar laws affecting the enforcement of creditors' rights
generally or by equitable principles relating to enforceability.

     5.05 Litigation. Except as specifically disclosed in Schedule 5.05, there
          ----------                                      -------------
are no actions, suits, proceedings, claims or disputes pending, or to the best
knowledge of the Company,

                                       33

<PAGE>

threatened or contemplated, at law, in equity, in arbitration or before any
Governmental Authority, against the Company, or its Subsidiaries or any of their
respective properties which:

          (a) purport to affect or pertain to this Agreement or any other Loan
Document, or any of the transactions contemplated hereby or thereby; or

          (b) would reasonably be expected to have a Material Adverse Effect. No
injunction, writ, temporary restraining order or any order of any nature has
been issued by any court or other Governmental Authority purporting to enjoin or
restrain the execution, delivery or performance of this Agreement or any other
Loan Document, or directing that the transactions provided for herein or therein
not be consummated as herein or therein provided.

     5.06 No Default. No Default or Event of Default exists or would result from
          ----------
the incurring of any Obligations by the Company. As of the Closing Date, neither
the Company nor any Subsidiary is in default under or with respect to any
Contractual Obligation in any respect which, individually or together with all
such defaults, could reasonably be expected to have a Material Adverse Effect,
or that would, if such default had occurred after the Closing Date, create an
Event of Default under subsection 8.01(e).

     5.07 ERISA Compliance. Except as specifically disclosed in Schedule 5.07:
          ----------------                                      -------------

          (a) Each Plan is in compliance in all material respects with the
applicable provisions of ERISA, the Code and other applicable federal or state
law, except to the extent that the failure to comply is not reasonably expected
to have a Material Adverse Effect. Each Plan which is intended to qualify under
Section 401(a) of the Code has received or has applied for when due and not been
denied a favorable determination letter from the IRS and to the best knowledge
of the Company, nothing has occurred which would cause the loss of such
qualification. The Company and each ERISA Affiliate has made or duly provided
for all required contributions to any Plan subject to Section 412 of the Code,
and no application for a funding waiver or an extension of any amortization
period pursuant to Section 412 of the Code has been made with respect to any
Plan.

          (b) There are no pending or, to the best knowledge of Company,
threatened claims, actions or lawsuits, or action by any Governmental Authority,
with respect to any Plan which has resulted or could reasonably be expected to
result in a Material Adverse Effect. There has been no prohibited transaction or
violation of the fiduciary responsibility rules with respect to any Plan which
has resulted or could reasonably be expected to result in a Material Adverse
Effect.

          (c) (i) No ERISA Event has occurred or is reasonably expected to
occur, (ii) no Pension Plan has any Unfunded Pension Liability, (iii) neither
the Company nor any ERISA Affiliate has incurred, or reasonably expects to
incur, any liability under Title IV of ERISA with respect to any Pension Plan
(other than premiums due and not delinquent under Section 4007 of ERISA), (iv)
neither the Company nor any ERISA Affiliate has incurred, or reasonably expects
to incur, any liability (and no event has occurred which, with the giving of
notice under Section 4219 of ERISA, would result in such liability) under
Section 4201 or 4243 of ERISA

                                       34

<PAGE>

with respect to a Multiemployer Plan, and (v) neither the Company nor any ERISA
Affiliate has engaged in a transaction that could be subject to Section 4069 or
4212(c) of ERISA.

     5.08 Use of Proceeds; Margin Regulations. The proceeds of the Loans are to
          -----------------------------------
be used solely for the purposes set forth in and permitted by Section 6.12 and
Section 7.07. Neither the Company nor any Subsidiary is generally engaged in the
business of purchasing or selling Margin Stock or extending credit for the
purpose of purchasing or carrying Margin Stock.

     5.09 Title to Properties. The Company and each Subsidiary have good record
          -------------------
and marketable title in fee simple to, or valid leasehold interests in, all real
property necessary or used in the ordinary conduct of their respective
businesses, except for such defects in title as could not, individually or in
the aggregate, reasonably be expected to have a Material Adverse Effect. As of
the Closing Date, the real and personal property of the Company and its Material
Subsidiaries is subject to no Liens, other than Permitted Liens.

     5.10 Taxes. The Company and its Subsidiaries have filed all Federal and
          -----
other material tax returns and reports required to be filed, and have paid all
Federal and other material taxes, assessments, fees and other governmental
charges levied or imposed upon them or their properties, income or assets
otherwise due and payable, except those which are being contested in good faith
by appropriate proceedings and for which adequate reserves have been provided in
accordance with GAAP. To the best knowledge of the Company, there is no proposed
tax assessment against the Company or any Subsidiary that would, if made, have a
Material Adverse Effect.

     5.11 Financial Condition.
          -------------------

          (a) The audited consolidated balance sheets of the Company and its
Subsidiaries as of December 31, 2001, and the related consolidated statements of
operations and cash flows for the fiscal year ended on that date:

               (i) were prepared in accordance with GAAP consistently applied
     throughout the period covered thereby, except as otherwise expressly noted
     therein;

               (ii) fairly present the financial condition of the Company and
     its Subsidiaries as of the date thereof and results of operations for the
     period covered thereby; and

               (iii) reflect or disclose all material Indebtedness and other
     liabilities of the Company and its consolidated Subsidiaries as of the date
     thereof, including liabilities for taxes, material commitments and
     Contingent Obligations.

          (b) Since December 31, 2001, there has been no Material Adverse
Effect.

     5.12 Environmental Matters. The Company conducts in the ordinary course of
          ---------------------
business a review of the effect of existing Environmental Laws and existing
Environmental Claims on its business, operations and properties, and as a result
thereof the Company has reasonably concluded that, except as specifically
disclosed in Schedule 5.12, such Environmental
             -------------

                                       35

<PAGE>

Laws and Environmental Claims are not, individually or in the aggregate,
reasonably expected to have a Material Adverse Effect.

     5.13 Regulated Entities. None of the Company, any Person controlling the
          ------------------
Company, or any Subsidiary, is an "Investment Company" within the meaning of the
Investment Company Act of 1940. The Company is not subject to regulation under
the Public Utility Holding Company Act of 1935, the Federal Power Act, the
Interstate Commerce Act, any state public utilities code, or any other Federal
or state statute or regulation limiting its ability to incur Indebtedness.

     5.14 No Burdensome Restrictions. Neither the Company nor any Subsidiary is
          --------------------------
a party to or bound by any Contractual Obligation, or subject to any restriction
in any Organization Document, or any Requirement of Law, which could reasonably
be expected to have a Material Adverse Effect.

     5.15 Copyrights, Patents, Trademarks and Licenses, etc. Except as disclosed
          -------------------------------------------------
on Schedule 5.15, the Company or its Subsidiaries own or are licensed or
   -------------
otherwise have the right to use all of the patents, trademarks, service marks,
trade names, copyrights, contractual franchises, authorizations and other rights
that are reasonably necessary for the operation of their respective businesses,
without conflict with the rights of any other Person. To the best knowledge of
the Company, no slogan or other advertising device, product, process, method,
substance, part or other material now employed, or now contemplated to be
employed, by the Company or any Subsidiary infringes upon any rights held by any
other Person. Except as specifically disclosed in Schedule 5.05, no claim or
                                                  -------------
litigation regarding any of the foregoing is pending or threatened, and no
patent, invention, device, application, principle or any statute, law, rule,
regulation, standard or code is pending or, to the knowledge of the Company,
proposed, which, in either case, could reasonably be expected to have a Material
Adverse Effect.

     5.16 Subsidiaries As of the Closing Date, the Company has no Subsidiaries
          ------------
other than those specifically disclosed in part (a) of Schedule 5.16 and has no
                                                       -------------
material equity investments in any other corporation or entity other than those
specifically disclosed in part (b) of Schedule 5.16.
                                      -------------

     5.17 Insurance. Except as specifically disclosed in Schedule 5.17, the
          ---------                                      -------------
properties of the Company and its Subsidiaries are insured with financially
sound and reputable insurance companies not Affiliates of the Company, in such
amounts, with such deductibles and covering such risks as are customarily
carried by companies engaged in similar businesses and owning similar properties
in localities where the Company or such Subsidiary operates.

     5.18 Swap Obligations. Neither the Company nor any of its Subsidiaries has
          ----------------
incurred any outstanding obligations under any Swap Contracts, other than
Permitted Swap Obligations. The Company has undertaken its own independent
assessment of its consolidated assets, liabilities and commitments and has
considered appropriate means of mitigating and managing risks associated with
such matters and has not relied on any swap counterparty or any Affiliate of any
swap counterparty in determining whether to enter into any Swap Contract.

                                       36

<PAGE>

     5.19 Full Disclosure. None of the representations or warranties made by the
          ---------------
Company or any Subsidiary in the Loan Documents as of the date such
representations and warranties are made or deemed made, and none of the
statements contained in any exhibit, report, statement or certificate furnished
by or on behalf of the Company or any Subsidiary in connection with the Loan
Documents (including the offering and disclosure materials delivered by or on
behalf of the Company to the Banks prior to the Closing Date), contains any
untrue statement of a material fact or omits any material fact required to be
stated therein or necessary to make the statements made therein, in light of the
circumstances under which they are made, not misleading as of the time when made
or delivered.

                                   ARTICLE VI

                              AFFIRMATIVE COVENANTS
                              ---------------------

          So long as any Bank shall have any Commitment hereunder, or any Loan
or other Obligation shall remain unpaid or unsatisfied, unless the Majority
Banks waive compliance in writing:

     6.01 Financial Statements. The Company shall deliver to the Agent and each
          --------------------
Bank, in form and detail reasonably satisfactory to the Agent and the Majority
Banks:

          (a) as soon as available, but not later than 100 days after the end of
each fiscal year, a copy of the audited consolidated balance sheet of the
Company and its Subsidiaries as at the end of such year and the related
consolidated statements of operations and cash flows for such year, setting
forth in each case in comparative form the figures for the previous fiscal year,
and accompanied by the opinion of a nationally-recognized independent public
accounting firm ("Independent Auditor") which report shall state that such
                  -------------------
consolidated financial statements present fairly the financial position for the
periods indicated in conformity with GAAP consistently applied. Such opinion
shall not be qualified or limited because of a restricted or limited examination
by the Independent Auditor of any material portion of the Company's or any
Material Subsidiary's records; and

          (b) as soon as available, but not later than 50 days after the end of
each of the first three fiscal quarters of each fiscal year, a copy of the
unaudited consolidated balance sheet of the Company and its Subsidiaries as of
the end of such quarter and the related consolidated statements of operations
and cash flows for the period commencing on the first day and ending on the last
day of such quarter, and certified by a Responsible Officer as fairly
presenting, in accordance with GAAP (subject to the absence of footnotes and
ordinary, good faith year-end audit adjustments), the financial position and the
results of operations of the Company and the Subsidiaries.

     6.02 Certificates; Other Information. The Company shall furnish to the
          -------------------------------
Agent and each Bank:

          (a) concurrently with the delivery of the financial statements
referred to in subsections 6.01(a) and (b), a Compliance Certificate executed by
a Responsible Officer;

                                       37

<PAGE>

          (b) promptly, but in no event later than 10 days of filing the same,
copies of all financial statements and reports that the Company sends to its
shareholders, and copies of all financial statements and regular, periodical or
special reports (including Forms 10K, 10Q and 8K) that the Company or any
Subsidiary may make to, or file with, the SEC; and

          (c) promptly, such additional information regarding the business,
financial or corporate affairs of the Company or any Subsidiary as the Agent, at
the request of any Bank, may from time to time reasonably request.

          Reports required to be delivered pursuant to subsections 6.01(a) or
(b) or 6.02(b) shall be deemed to have been delivered on the date on which the
Company posts such reports on the Company's website on the Internet at the
website address set forth in Schedule 10.02 or when such report is posted on the
                             --------------
SEC's website at www.sec.gov; provided that (x) the Company shall deliver paper
                              --------
copies of such reports to the Agent or any Bank who requests the Company to
deliver such paper copies until written request to cease delivering paper copies
is given by the Agent or such Bank, (y) the Company shall notify by facsimile or
by electronic mail the Agent and each Bank of the posting of any such reports,
and (z) in every instance the Company shall provide paper copies of the
Compliance Certificates required by subsection 6.02(a) to the Agent and each of
the Banks. Except for such Compliance Certificates, the Agent shall have no
obligation to request the delivery or to maintain copies of the reports referred
to above, and in any event shall have no responsibility to monitor compliance by
the Company with any such request for delivery, and each Bank shall be solely
responsible for requesting delivery to it or maintaining its copies of such
reports.

     6.03 Notices. The Company shall promptly notify the Agent and each Bank:
          -------

          (a) of the occurrence of any Default or Event of Default;

          (b) as soon as a Responsible Officer becomes aware thereof, of any
matter that could reasonably be expected to result in a Material Adverse Effect,
including (i) breach or non-performance of, or any default under, a Contractual
Obligation of the Company or any Subsidiary, (ii) any dispute, litigation,
investigation, proceeding or suspension between the Company or any Subsidiary
and any Governmental Authority, or (iii) the commencement of, or any material
development in, any litigation or proceeding affecting the Company or any
Material Subsidiary, including pursuant to any applicable Environmental Laws;

          (c) of the occurrence of any of the following events affecting the
Company or any ERISA Affiliate (but in no event more than 10 days after such
event), and deliver to the Agent and each Bank a copy of any notice with respect
to such event that is filed with a Governmental Authority and any notice
delivered by a Governmental Authority to the Company or any ERISA Affiliate with
respect to such event:

               (i) an ERISA Event;

               (ii) a material increase in the Unfunded Pension Liability of any
     Pension Plan;

                                       38

<PAGE>

               (iii) the adoption of, or the commencement of contributions to,
     any Plan subject to Section 412 of the Code by the Company or any ERISA
     Affiliate; or

               (iv) the adoption of any amendment to a Plan subject to Section
     412 of the Code, if such amendment results in a material increase in
     contributions or Unfunded Pension Liability;

          (d) of the execution of any material amendment to the Innoveda
Acquisition Agreement or any other material agreements or documents related to
the Innoveda Acquisition, in which case the Company shall promptly deliver to
the Agent executed copies of such material agreements and documents and any
amendments and supplements thereto to the extent not previously delivered to the
Agent pursuant to Sections 4.01 and 4.03; and

          (e) upon the request from time to time (but not more frequently than
once each fiscal quarter unless a Default or an Event of Default exists) of the
Agent, the Swap Termination Values, together with a description of the method by
which such values were determined, relating to any then-outstanding Swap
Contracts to which the Company or any of its Subsidiaries is party.

          Each notice under this Section shall be accompanied by a written
statement by a Responsible Officer setting forth details of the occurrence
referred to therein, and stating what action the Company or any affected
Subsidiary proposes to take with respect thereto and at what time. Each notice
under subsection 6.03(a) shall describe with particularity any and all clauses
or provisions of this Agreement or other Loan Document that have been breached
or violated, but the reasonable failure to identify all such clauses or
provisions shall not, of itself, constitute a failure to comply with subsection
6.03(a).

     6.04 Preservation of Corporate Existence, Etc. The Company shall, and shall
          ----------------------------------------
cause each Material Subsidiary to:

          (a) except as otherwise permitted by this Agreement, preserve and
maintain in full force and effect its corporate existence and good standing
under the laws of its state or jurisdiction of incorporation;

          (b) preserve and maintain in full force and effect all governmental
rights, privileges, qualifications, permits, licenses and franchises necessary
or desirable in the normal conduct of its business except (i) in connection with
transactions permitted by Section 7.03 and sales of assets permitted by Section
7.02, or (ii) where such failure to preserve or maintain could not reasonably be
expected to result in a Material Adverse Effect;

          (c) use reasonable efforts, in the ordinary course of business, to
preserve its business organization and goodwill; and

          (d) preserve or renew all of its registered patents, trademarks, trade
names and service marks, the non-preservation of which could reasonably be
expected to have a Material Adverse Effect.

                                       39

<PAGE>

     6.05 Maintenance of Property. The Company shall, and shall cause each
          -----------------------
Subsidiary to, maintain and preserve all of its material property which is used
or useful in its business in good working order and condition, ordinary wear and
tear excepted, except as permitted by Section 7.02. The Company and each
Subsidiary shall use the standard of care typical in the industry in the
operation and maintenance of its facilities.

     6.06 Insurance. The Company shall maintain, and shall cause each Material
          ---------
Subsidiary to maintain, with financially sound and reputable independent
insurers, insurance with respect to its properties and business against loss or
damage of the kinds customarily insured against by Persons engaged in the same
or similar business, of such types and in such amounts as are customarily
carried under similar circumstances by such other Persons.

     6.07 Payment of Obligations. Unless the same are being contested in good
          ----------------------
faith by appropriate proceedings and adequate reserves in accordance with GAAP
are being maintained by the Company or such Subsidiary, the Company shall, and
shall cause each Material Subsidiary to, pay and discharge as the same shall
become due and payable, all their respective obligations and liabilities,
including:

          (a) all tax liabilities, assessments and governmental charges or
levies upon it or its properties or assets;

          (b) all lawful claims which, if unpaid, would by law become a Lien
upon its property not otherwise permitted hereunder; and

          (c) all Indebtedness, as and when due and payable, but subject to any
subordination provisions contained in any instrument or agreement evidencing
such Indebtedness.

     6.08 Compliance with Laws. The Company shall comply, and shall cause each
          --------------------
Material Subsidiary to comply, in all material respects with all Requirements of
Law of any Governmental Authority having jurisdiction over it or its business
(including the Federal Fair Labor Standards Act), except such as may be
contested in good faith or as to which a bona fide dispute may exist.

     6.09 Compliance with ERISA. The Company shall, and shall cause each of its
          ---------------------
ERISA Affiliates to: (a) maintain each Plan in compliance in all material
respects with the applicable provisions of ERISA, the Code and other federal or
state law; (b) cause each Plan which is qualified under Section 401(a) of the
Code to maintain such qualification; and (c) make all required contributions to
any Plan subject to Section 412 of the Code, except in each case to the extent
that any failure to maintain such compliance or qualification or to make such
contributions could not reasonably be expected to have a Material Adverse
Effect.

     6.10 Inspection of Property and Books and Records. The Company shall
          --------------------------------------------
maintain and shall cause each Material Subsidiary to maintain adequate books of
record and account, in which full, true and correct entries in conformity with
GAAP consistently applied shall be made of all financial transactions and
matters involving the assets and business of the Company or such Material
Subsidiary. The Company shall permit, and shall cause each Material Subsidiary
to permit, representatives and independent contractors of the Agent or any Bank
to visit and inspect

                                       40

<PAGE>

any of their respective properties, to examine their respective corporate,
financial and operating records, and make copies thereof or abstracts therefrom,
and to discuss their respective affairs, finances and accounts with their
respective directors, officers, and independent public accountants at such
reasonable times during normal business hours and as often as may be reasonably
necessary upon reasonable advance notice to the Company and, in the case of any
discussion with independent public accountants of the Company or any Material
Subsidiary, upon providing the Company's representatives with a reasonable
opportunity to participate in and/or be present at any such discussion;
provided, however, when an Event of Default exists the Agent or any Bank may do
--------  -------
any of the foregoing at the expense of the Company and at any time during normal
business hours without advance notice (except that the Company's representatives
shall be given a reasonable opportunity to participate in and/or be present at
any discussions with independent public accountants of the Company or any
Material Subsidiary).

     6.11 Environmental Laws. The Company shall, and shall cause each Subsidiary
          ------------------
to, conduct its operations and keep and maintain its property in compliance, in
all material respects, with all Environmental Laws.

     6.12 Use of Proceeds. The Company shall use the proceeds of the Loans (a)
          ---------------
to effect the Innoveda Acquisition and (b) to pay fees, expenses and costs
(including restructuring costs) in connection with the Innoveda Acquisition and
integration thereof.

     6.13 IKOS Acquisition. The Company shall cause IKOS to become a
          ----------------
Wholly-Owned Subsidiary on, or within a reasonable period of time after, the
IKOS Acquisition Date.

     6.14 Innoveda Acquisition. The Company shall cause Innoveda to become a
          --------------------
Wholly-Owned Subsidiary on, or within a reasonable period of time after, the
date of consummation of the Innoveda Acquisition.

                                   ARTICLE VII

                               NEGATIVE COVENANTS
                               ------------------

          So long as any Bank shall have any Commitment hereunder, or any Loan
or other Obligation shall remain unpaid or unsatisfied, unless the Majority
Banks waive compliance in writing:

     7.01 Limitation on Liens. The Company shall not, and shall not suffer or
          -------------------
permit any Material Subsidiary to, directly or indirectly, make, create, incur,
assume or suffer to exist any Lien upon or with respect to any part of its
property, whether now owned or hereafter acquired, other than the following
("Permitted Liens"):
  ---------------

          (a) any Lien existing on property of the Company or any Subsidiary on
the Closing Date and set forth in Schedule 7.01 either (i) securing Indebtedness
                                  -------------
outstanding on such date or (ii) which does not otherwise secure Indebtedness;

          (b) any Lien created under any Loan Document;

                                       41

<PAGE>

          (c) Liens for taxes, fees, levies, imposts, assessments or other
governmental charges which are not delinquent or remain payable without penalty,
or to the extent that non-payment thereof is permitted by Section 6.07, provided
that no notice of lien has been filed or recorded under the Code;

          (d) carriers', warehousemen's, mechanics', landlords', materialmen's,
repairmen's or other similar Liens arising in the ordinary course of business
which are not delinquent or remain payable without penalty or which are being
contested in good faith and by appropriate proceedings, which proceedings have
the effect of preventing the forfeiture or sale of the property subject thereto;

          (e) Liens (other than any Lien imposed by ERISA) consisting of pledges
or deposits required in the ordinary course of business in connection with
workers' compensation, unemployment insurance and other social security
legislation;

          (f) Liens on the property of the Company or its Subsidiary securing
(i) the non-delinquent performance of bids, trade contracts (other than for
borrowed money), leases, statutory obligations, (ii) contingent obligations on
surety and appeal bonds, and (iii) other non-delinquent obligations of a like
nature; in each case, incurred in the ordinary course of business, provided all
such Liens in the aggregate would not (even if enforced) cause a Material
Adverse Effect;

          (g) Liens consisting of judgment or judicial attachment liens,
provided that the enforcement of such Liens is effectively stayed and all such
liens in the aggregate at any time outstanding for the Company and its
Subsidiaries do not exceed $20,000,000;

          (h) easements, rights-of-way, zoning or use restrictions and other
similar encumbrances incurred in the ordinary course of business which, in the
aggregate, are not substantial in amount, and which do not in any case
materially detract from the value of the property subject thereto or interfere
with the ordinary conduct of the businesses of the Company and its Subsidiaries;

          (i) Liens on assets acquired by the Company or any Subsidiary or on
any assets of Persons which become Subsidiaries, in each case, which assets or
Persons are acquired after the date of this Agreement, provided, however, that
                                                       --------  -------
such Liens existed at the time such assets were acquired by the Company or any
Subsidiary or such Persons became Subsidiaries and were not created in
anticipation thereof;

          (j) purchase money security interests on any property acquired,
constructed or held by the Company or its Subsidiaries in the ordinary course of
business, securing Indebtedness incurred or assumed for the purpose of financing
all or any part of the cost of acquiring such property; provided that (i) any
                                                        -------- ----
such Lien attaches to such property concurrently with or within 30 days after
the acquisition or construction thereof, (ii) such Lien attaches solely to the
property so acquired or constructed in such transaction, (iii) the principal
amount of the debt secured thereby does not exceed 100% of the cost of such
property, and (iv) the principal amount of the Indebtedness secured by any and
all such purchase money security interests shall not at any time exceed
$10,000,000;

                                       42

<PAGE>

          (k) Liens securing obligations in respect of capital leases on assets
subject to such leases, provided that such capital leases are otherwise
permitted hereunder;

          (l) Liens arising solely by virtue of any statutory or common law
provision relating to banker's liens, rights of set-off or similar rights and
remedies as to deposit accounts or other funds maintained with a creditor
depository institution; provided that (i) such deposit account is not a
                        -------- ----
dedicated cash collateral account and is not subject to restrictions against
access by the Company in excess of those set forth by regulations promulgated by
the FRB, and (ii) such deposit account is not intended by the Company or any
Subsidiary to provide collateral to the depository institution;

          (m) Liens consisting of pledges of cash collateral or government
securities to secure on a mark-to-market basis Permitted Swap Obligations only,
provided that (i) the counterparty to any Swap Contract relating to any such
Permitted Swap Obligation is under a similar requirement to deliver similar
collateral from time to time to the Company or the Subsidiary party thereto on a
mark-to-market basis, and (ii) the aggregate value of such collateral so pledged
by the Company and the Subsidiaries together in favor of any counterparty does
not at any time exceed $10,000,000;

          (n) Liens securing Refinancing Indebtedness (as defined in subsection
7.05(f)) which was originally secured by a Lien permitted by this Section 7.01;
provided that such Lien does not apply to any other property or assets of the
--------
Company or any Subsidiary other than the proceeds of the property or assets
subject to such Lien;

          (o) Liens pursuant to Permitted Receivables Purchase Facilities
permitted by the terms hereof;

          (p) other non-consensual Liens arising in the ordinary course of
business the existence or enforcement of which would not result in a Material
Adverse Effect;

          (q) other Liens securing Indebtedness and obligations in an aggregate
principal amount at any time outstanding not exceeding $5,000,000; provided that
                                                                   --------
any such Lien shall not encumber cash (other than to the extent such cash
constitutes proceeds of the property subject to any such Lien), inventory or
accounts receivable;

          (r) Liens on Margin Stock of Innoveda; and

          (s) Liens on Margin Stock of IKOS.

     7.02 Disposition of Assets. The Company shall not, and shall not suffer or
          ---------------------
permit any Subsidiary to, directly or indirectly, sell, assign, lease, convey,
transfer or otherwise dispose of (whether in one or a series of transactions)
any property (including accounts and notes receivable, with or without recourse)
or enter into any agreement to do any of the foregoing, except:

          (a) dispositions of inventory, or used, worn-out or surplus equipment,
all in the ordinary course of business;

                                       43

<PAGE>

          (b) the sale of equipment to the extent that such equipment is
exchanged for credit against the purchase price of similar replacement
equipment, or the proceeds of such sale are reasonably promptly applied to the
purchase price of such replacement equipment;

          (c) dispositions of inventory or equipment by the Company or any
Subsidiary to the Company or any Subsidiary pursuant to reasonable business
requirements;

          (d) dispositions of Permitted Receivables pursuant to Permitted
Receivables Purchase Facilities; provided that (i) for those Permitted
                                 --------
Receivables having a final maturity date which is less than 12 months after the
date such obligations arise, the value of such accounts receivable so sold by
the Company and its Subsidiaries shall not exceed $50,000,000 at any time
outstanding, and (ii) the value of all Permitted Receivables (whether or not
having a final maturity date which is less than 12 months after the date such
obligations arise) so sold by the Company and its Subsidiaries shall not exceed
$50,000,000 at any time outstanding; and provided, further, however, that no
                                         --------  -------  -------
dispositions of any Permitted Receivables shall be permitted at any time that
any of the following circumstances exist: (A) if after giving effect to such
disposition, the Company would not be in pro forma compliance with the financial
covenants set forth in subsections 7.14(a) through (d), measured as of the last
day of the fiscal quarter then most recently ended for which a Compliance
Certificate has been delivered to the Agent and the Banks pursuant to subsection
6.02(b), or (B) any Event of Default then exists or would result from such
disposition;

          (e) the sale of the Wilsonville Facility for fair market value (as
determined in good faith at the time of such sale by the board of directors of
the Company); provided that (i) no Default or Event of Default then exists or
              --------
would result from such sale, and (ii) the Net Sale Proceeds thereof are applied
to prepay the Loans hereunder;

          (f) the sale or lease of any property set forth in Schedule 7.02 and
                                                             -------------
any excess facilities acquired at the time of the ATI Acquisition, the IKOS
Acquisition or the Innoveda Acquisition, in each case for fair market value (as
determined in good faith at the time of such sale by the board of directors of
the Company or the applicable Subsidiary, as the case may be); provided that no
                                                               --------
Default or Event of Default then exists or would result from such sale;

          (g) dispositions not otherwise permitted hereunder which are made for
fair market value; provided, that (i) at the time of any disposition, no Event
                   --------
of Default shall exist or shall result from such disposition, (ii) the aggregate
net book value of all assets so sold by the Company and its Subsidiaries,
together, shall not exceed in any fiscal year $10,000,000, and (iii) any such
disposition made pursuant to this subsection (g) shall not be of accounts
receivable of the Company or any of its Subsidiaries;

          (h) dispositions to the extent permitted under Section 7.03;

          (i) the sale of Margin Stock of Innoveda for fair market value (as
determined in good faith at the time of such sale by the board of directors of
the Company or the applicable Subsidiary, as the case may be); and

                                       44

<PAGE>

          (j) the sale of Margin Stock of IKOS for fair market value (as
determined in good faith at the time of such sale by the board of directors of
the Company or the applicable Subsidiary, as the case may be).

     7.03 Consolidations and Mergers. The Company shall not, and shall not
          --------------------------
suffer or permit any Subsidiary to, merge, consolidate with or into, or convey,
transfer, lease or otherwise dispose of (whether in one transaction or in a
series of transactions) all or substantially all of its assets (whether now
owned or hereafter acquired) to or in favor of any Person, except:

          (a) any Subsidiary may merge with the Company (provided that the
                                                         --------
Company shall be the continuing or surviving corporation) or with any one or
more Subsidiaries (provided that, if any transaction shall be between a
                   --------
Subsidiary and a Wholly-Owned Subsidiary, the continuing or surviving
corporation shall be a Wholly-Owned Subsidiary);

          (b) any Subsidiary may sell all or substantially all of its assets
(upon voluntary liquidation or otherwise) to the Company or a Wholly-Owned
Subsidiary;

          (c) the Company or any Subsidiary may merge with any Person in
connection with the ATI Acquisition, the IKOS Acquisition and the Innoveda
Acquisition so long as (i) either (A) the surviving entity is the Company or
such Subsidiary; provided that in any such merger involving the Company, the
                 --------
Company shall be the surviving entity; (B) if the merger involves a Subsidiary
being absorbed into the target Person, such target Person shall become a
Wholly-Owned Subsidiary of Company upon the consummation of the Acquisition; or
(C) such merger is otherwise permitted pursuant to clause (a) above, (ii) such
Acquisition is otherwise permitted hereunder, and (iii) immediately before and
after giving effect to such merger no Default or Event of Default shall exist;
and

          (d) any Subsidiary may merge with any Person pursuant to a disposition
of such Subsidiary or the assets of such Subsidiary, in each case, permitted
under Section 7.02.

     7.04 Loans and Investments. The Company shall not purchase or acquire, or
          ---------------------
suffer or permit any Subsidiary to purchase or acquire, for cash or property, or
make any commitment therefor, any capital stock, equity interest, obligations or
other securities of, or any interest in, any Person, or make or commit to make
any Acquisitions, or make or commit to make any advance, loan, extension of
credit or capital contribution to or any other investment in, any Person
including any Affiliate of the Company (together, "Investments"), except for:
                                                   -----------

          (a) Investments held by the Company or any Subsidiary in the form of
Cash Equivalents or short term marketable securities or Permitted Investments;

          (b) extensions of credit in the nature of accounts receivable or notes
receivable arising from the sale or lease of goods or services in the ordinary
course of business;

          (c) Investments by the Company in any of its Wholly-Owned Subsidiaries
or by any of its Wholly-Owned Subsidiaries in the Company or another of its
Wholly-Owned Subsidiaries;

                                       45

<PAGE>

          (d) Investments constituting Permitted Swap Obligations or payments or
advances under Swap Contracts relating to Permitted Swap Obligations;

          (e) Investments permitted under subsection 7.10(b);

          (f) loans made by the Company or any Subsidiary in the ordinary course
of business to a Person not an Affiliate of the Company in an aggregate
principal amount not exceeding $15,000,000 at any time outstanding for all such
loans;

          (g) loans made by the Company or any Subsidiary in the ordinary course
of business and consistent with past practice to employees in an aggregate
principal amount not exceeding $2,500,000 at any time outstanding and not
exceeding $500,000 to any individual employee;

          (h) Investments of the Company or its Subsidiaries outstanding on the
Closing Date and set forth in Schedule 7.04;
                              -------------

          (i) the purchase by the Company of the capital stock of Innoveda;

          (j) the purchase by the Company of the capital stock of IKOS; and

          (k) other Investments, the value of which as reflected on the
Company's balance sheet does not exceed $10,000,000 in the aggregate in any
fiscal year.

     7.05 Limitation on Indebtedness. The Company shall not, and shall not
          --------------------------
suffer or permit any Subsidiary to, create, incur, assume, suffer to exist, or
otherwise become or remain directly or indirectly liable with respect to, any
Indebtedness, except:

          (a) Indebtedness incurred pursuant to this Agreement and the Existing
Credit Agreement;

          (b) Indebtedness consisting of Contingent Obligations permitted
pursuant to Section 7.08;

          (c) Indebtedness existing on the Closing Date and set forth in
Schedule 7.05;
-------------

          (d) Indebtedness secured by Liens permitted by subsection 7.01(i),
(j), (k) and (m);

          (e) Indebtedness incurred in connection with leases permitted pursuant
to Section 7.09;

          (f) extensions, renewals or refinancings of Indebtedness permitted
under this Section 7.05, so long as (i) such Indebtedness (the "Refinancing
                                                                -----------
Indebtedness") is in an aggregate principal amount not greater than the
------------
aggregate principal amount of the Indebtedness being extended, renewed or
refinanced plus the amount of any premiums required to be paid therefor and fees
and expenses associated therewith, (ii) such Refinancing Indebtedness has a
later or equal final maturity and a longer or equal weighted average life as the
Indebtedness

                                       46

<PAGE>

being extended, refinanced or renewed, (iii) the interest rate applicable to
such Refinancing Indebtedness shall not exceed a market rate (as determined in
good faith by the board of directors of the Company or the relevant Subsidiary,
as the case may be) as of the time of such extension, renewal or refinancing,
(iv) if the Indebtedness being extended, renewed or refinanced is subordinated
to the Obligations, such Refinancing Indebtedness is subordinated to the
Obligations to the same extent as the Indebtedness being extended, renewed or
refinanced and (v) at the time of and after giving effect to such extension,
renewal or refinancing, no Default or Event of Default shall exist;

          (g) Indebtedness incurred by the Company or any Subsidiary pursuant to
Permitted Receivables Purchase Facilities permitted hereunder; and

          (h) other unsecured Indebtedness in an aggregate principal amount
outstanding not exceeding $10,000,000 at any time.

     7.06 Transactions with Affiliates. Except as otherwise expressly permitted
          ----------------------------
hereunder, the Company shall not, and shall not suffer or permit any Subsidiary
to, enter into any transaction with any Affiliate of the Company, except upon
fair and reasonable terms no less favorable to the Company or such Subsidiary
than would obtain in a comparable arm's-length transaction with a Person not an
Affiliate of the Company or such Subsidiary; provided, that the loans permitted
                                             --------
by subsection 7.04(g) and the Company's or any Subsidiary's employee relocation
program as in effect on the Closing Date, as such programs may be amended or
otherwise modified after the Closing Date in the ordinary course of business,
shall not be subject to the application of this Section 7.06.

     7.07 Use of Proceeds.
          ---------------

          (a) The Company shall not, and shall not suffer or permit any
Subsidiary to, use any portion of the Loan proceeds, directly or indirectly, (i)
to purchase or carry Margin Stock, (ii) to repay or otherwise refinance
indebtedness of the Company or others incurred to purchase or carry Margin
Stock, (iii) to extend credit for the purpose of purchasing or carrying any
Margin Stock, in the case of each of the preceding clauses (i) (ii) and (iii),
in violation of Regulation T, U or X of the FRB, or (iv) to acquire any security
(other than Margin Stock of Innoveda) in any transaction that is subject in
Section 13(d) or 14(d) of the Exchange Act.

          (b) The Company shall not, directly or indirectly, use any portion of
the Loan proceeds (i) knowingly to purchase Ineligible Securities from the
Arranger during any period in which the Arranger makes a market in such
Ineligible Securities, (ii) knowingly to purchase during the underwriting or
placement period Ineligible Securities being underwritten or privately placed by
the Arranger, or (iii) to make payments of principal or interest on Ineligible
Securities underwritten or privately placed by the Arranger and issued by or for
the benefit of the Company or any Affiliate of the Company. The Arranger is a
registered broker-dealer and permitted to underwrite and deal in certain
Ineligible Securities; and "Ineligible Securities" means securities which may
                            ---------------------
not be underwritten or dealt in by member banks of the Federal Reserve System
under Section 16 of the Banking Act of 1933 (12 U.S.C. (S) 24, Seventh), as
amended.

                                       47

<PAGE>

     7.08 Contingent Obligations. The Company shall not, and shall not suffer or
          ----------------------
permit any Subsidiary to, create, incur, assume or suffer to exist any
Contingent Obligations except:

          (a) endorsements for collection or deposit in the ordinary course of
business;

          (b) Permitted Swap Obligations;

          (c) Contingent Obligations of the Company and its Subsidiaries
existing as of the Closing Date and set forth in Schedule 7.08 and any
                                                 -------------
equivalent replacements thereof;

          (d) Contingent Obligations with respect to Surety Instruments incurred
in the ordinary course of business in an aggregate amount not to exceed
$5,000,000;

          (e) Guaranty Obligations by the Company of Indebtedness and other
obligations of a Subsidiary, or by any Subsidiary of Indebtedness and other
obligations of the Company or any other Subsidiary, provided that, in each case,
                                                    --------
such Indebtedness and other obligations are otherwise permitted hereunder;

          (f) Contingent Obligations under the Company's or any Subsidiary's
employee relocation plan as in effect on the Closing Date, as such plans may be
amended or otherwise modified after the Closing Date in the ordinary course of
business; and

          (g) Contingent Obligations in respect of any bond or credit
enhancement posted or otherwise provided by or on behalf of the Company in
connection with the appeal by the Company of any judgment, order, decree or
arbitration award entered against the Company relating to the ongoing patent
litigation between the Company and Cadence Design Systems, Inc.; provided that
                                                                 --------
the aggregate principal amount of such bond(s) or credit enhancement(s) shall
not at any time exceed $20,000,000.

     7.09 Lease Obligations. The Company shall not, and shall not suffer or
          -----------------
permit any Subsidiary to, create or suffer to exist any obligations for the
payment of rent for any property under lease or agreement to lease, except for:

          (a) operating leases existing on or entered into by the Company or any
Subsidiary after the Closing Date in the ordinary course of business and
reported in the Company's consolidated financial statements in accordance with
GAAP; provided that payments in respect of all such operating leases, together
      --------
with all payments in respect of capital leases permitted under clause (c) of
this Section, do not exceed $30,000,000 in the aggregate in any fiscal year;

          (b) leases entered into by the Company or any Subsidiary after the
Closing Date pursuant to sale-leaseback transactions (i) in connection with a
sale of the Wilsonville Facility permitted under subsection 7.02(e), and (ii) if
the disposition of the asset is permitted under subsection 7.02(g);

          (c) capital leases, other than those permitted under clause (b) of
this Section, entered into by the Company or any Subsidiary after the Closing
Date to finance the acquisition of equipment; provided that the payments in
                                              --------
respect of all such capital leases, together with all

                                       48

<PAGE>

payments in respect of operating leases permitted under clause (a) of this
Section, do not exceed $30,000,000 in the aggregate in any fiscal year; and

          (d) leases entered into by ATI and IKOS; provided that such leases
                                                   --------
existed at the time each such Person became a Subsidiary and were not created in
anticipation thereof, and leases entered into by Persons which become
Subsidiaries after the date of this Agreement, provided that such leases existed
                                               --------
at the time such Persons became Subsidiaries and were not created in
anticipation thereof.

     7.10 Restricted Payments. The Company shall not declare or make any
          ----------
dividend payment or other distribution of assets, properties, cash, rights,
obligations or securities on account of any shares of any class of its capital
stock, or purchase, redeem or otherwise acquire for value any shares of its
capital stock or any warrants, rights or options to acquire such shares, now or
hereafter outstanding; or make any payment or prepayment of principal of,
premium, if any, or interest on, or redeem, purchase, retire, defease (including
in-substance or legal defeasance), or make any sinking fund or similar payment
with respect to, the Subordinated Indebtedness, except that:

          (a) the Company may declare and make dividend payments or other
distributions payable solely in its common stock; and

          (b) so long as no Default or Event of Default exists or would result
therefrom, the Company may purchase, redeem or otherwise acquire shares of its
common stock or warrants or options to acquire any such shares pursuant to any
employee stock option or purchase plan; provided that all such purchases,
                                        --------
redemptions or other acquisitions otherwise permitted under this clause (b) do
not exceed $5,000,000 in the aggregate in any fiscal year.

     7.11 ERISA. The Company shall not, and shall not suffer or permit any of
          -----
its ERISA Affiliates to engage in a prohibited transaction or violation of the
fiduciary responsibility rules with respect to any Plan or engage in a
transaction that could be subject to Section 4069 or 4212(c) of ERISA which has
resulted or could reasonably be expected to result in liability of the Company
in an aggregate amount in excess of $5,000,000.

     7.12 Change in Business. The Company shall not, and shall not suffer or
          ------------------
permit any Material Subsidiary to, engage in any material line of business
substantially different from design automation and reasonably related lines of
business.

     7.13 Accounting Changes. The Company shall not make any significant change
          ------------------
in accounting treatment or reporting practices, except as required by GAAP or
the SEC or any other Governmental Authority, or change the fiscal year of the
Company.

     7.14 Financial Covenants.
          -------------------

          (a) Minimum Liquidity. The Company shall not permit the ratio
              -----------------
(determined in respect of the Company and its Subsidiaries on a consolidated
basis) of (i) cash plus the value (valued in accordance with GAAP) of all Cash
                   ----
Equivalents plus net current accounts receivable (valued in accordance with
            ----
GAAP), other than cash, Cash Equivalents and net current accounts receivable
subject to a Lien securing Indebtedness, to (ii) Consolidated Funded
Indebtedness, as

                                       49

<PAGE>

of June 30, 2002 to be less than 0.95 to 1.00 and as of the end of each fiscal
quarter thereafter to be less than 1.00 to 1.00.

          (b) Minimum Tangible Net Worth. The Company shall not as of the end of
              --------------------------
any fiscal quarter permit Consolidated Tangible Net Worth to be less than the
sum of (i) Consolidated Tangible Net Worth as of the last day of the fiscal
quarter in which the consummation of the Innoveda Acquisition occurs, less (ii)
                                                                      ----
$5,000,000, plus (iii) 75% of Consolidated Net Income (before write-offs related
            ----
to or incurred in respect of the ATI Acquisition, the IKOS Acquisition and the
Innoveda Acquisition relating to goodwill and other intangibles previously
capitalized on the Company's balance sheet associated with any such Acquisition
excluding write-offs for in-process research and development not previously
capitalized on the Company's balance sheet) for each fiscal quarter commencing
after the last day of the fiscal quarter in which the consummation of the
Innoveda Acquisition occurs (to the extent such Consolidated Net Income for any
such fiscal quarter is positive), plus (iv) 100% of the Net Issuance Proceeds of
                                  ----
any new equity issued by the Company after the last day of the fiscal quarter in
which the consummation of the Innoveda Acquisition occurs (excluding equity
issued under employee stock option or purchase plans); provided, however, that
                                                       --------  -------
in no event shall Consolidated Tangible Net Worth as of the last day of the
fiscal quarter in which the consummation of the Innoveda Acquisition occurs be
less than $-75,000,000.

          (c) Minimum Net Income. The Company shall not as of the end of any
              ------------------
fiscal quarter permit Consolidated Net Income (excluding amortization of
intangibles and restructuring charges and non-cash expenses and write-offs
related to or incurred in respect of the ATI Acquisition, the IKOS Acquisition
and the Innoveda Acquisition taken in the fiscal quarter in which the
consummation of such Acquisition occurs, or in the immediately following fiscal
quarter) to be less than $0 at any time.

          (d) Maximum Consolidated Funded Indebtedness to Consolidated EBITDA.
              ---------------------------------------------------------------
The Company shall not as of the end of any fiscal quarter permit the ratio of
(i) Consolidated Funded Indebtedness as of such date to (ii) Consolidated EBITDA
for the four fiscal quarter period ended on such date to be more than (A) 2.35
to 1.00 for the fiscal quarter ended June 30, 2002, and (B) 2.00 to 1.00 for
each fiscal quarter thereafter.

          (e) Maximum Capital Expenditures. The Company shall not, and shall not
              ----------------------------
suffer or permit any Subsidiary to, make or become legally obligated to make any
expenditure in respect of the purchase or other acquisition of any fixed or
capital asset (excluding normal replacements and maintenance which are properly
charged to current operations), except for capital expenditures in the ordinary
course of business not exceeding, in the aggregate for the Company and its
Subsidiaries during fiscal year 2002, $35,000,000.

                                       50

<PAGE>

     7.15 Amendments to Terms of Innoveda Acquisition . The Company shall not
          -------------------------------------------
agree to any material amendment to, or waive any of its material rights under,
the terms of the Innoveda Acquisition after the initial Borrowing Date without
obtaining the prior written consent of the Agent and Majority Banks.

                                  ARTICLE VIII

                                EVENTS OF DEFAULT
                                -----------------

     8.01 Event of Default. Any of the following shall constitute an "Event of
          ----------------                                            --------
Default":
-------

          (a) Non-Payment. The Company fails to pay, (i) when and as required to
              -----------
be paid herein, any amount of principal of any Loan, or (ii) within five days
after the same becomes due, any interest, fee or any other amount payable
hereunder or under any other Loan Document; or

          (b) Representation or Warranty. Any representation or warranty by the
              --------------------------
Company or any Subsidiary made or deemed made herein, in any other Loan
Document, or which is contained in any certificate, document or financial or
other statement by the Company, any Subsidiary, or any Responsible Officer,
furnished at any time under this Agreement, or in or under any other Loan
Document, is incorrect in any material respect on or as of the date made or
deemed made; or

          (c) Specific Defaults. The Company fails to perform or observe any
              -----------------
term, covenant or agreement contained in any of Section 6.01, 6.03(a) or 6.12 or
in Article VII; or

          (d) Other Defaults. The Company fails to perform or observe any other
              --------------
term or covenant contained in this Agreement or any other Loan Document, and
such default shall continue unremedied for a period of 30 days after the earlier
of (i) the date upon which a Responsible Officer knew of such failure, or (ii)
the date upon which written notice thereof is given to the Company by the Agent
or any Bank; or

          (e) Cross-Default. (i) The Company or any Material Subsidiary (A)
              -------------
fails to make any payment in respect of any Indebtedness or Contingent
Obligation (other than in respect of Swap Contracts), having an aggregate
principal amount (including undrawn committed or available amounts and including
amounts owing to all creditors under any combined or syndicated credit
arrangement) of more than $10,000,000 when due (whether by scheduled maturity,
required prepayment, acceleration, demand, or otherwise) and such failure
continues after the applicable grace or notice period, if any, specified in the
relevant document on the date of such failure; or (B) fails to perform or
observe any other condition or covenant, or any other event shall occur or
condition exist, under any agreement or instrument relating to any such
Indebtedness or Contingent Obligation, and such failure continues after the
applicable grace or notice period, if any, specified in the relevant document on
the date of such failure if the effect of such failure, event or condition under
the preceding clauses (A) or (B) is to cause such Indebtedness to be declared to
be due and payable prior to its stated maturity, or such Contingent Obligation
to become payable or cash collateral in respect thereof to be demanded, or (ii)
there occurs under any Swap Contract an Early Termination Date (as defined in
such Swap Contract) resulting from (A) any event of default under such Swap
Contract as to which the Company or

                                       51

<PAGE>

any Subsidiary is the Defaulting Party (as defined in such Swap Contract); or
(B) any Termination Event (as so defined) as to which the Company or any
Subsidiary is an Affected Party (as so defined), and, in either event, the Swap
Termination Value owed by the Company or such Subsidiary as a result thereof is
greater than $10,000,000; or

          (f) Insolvency; Voluntary Proceedings. The Company or any Material
              ---------------------------------
Subsidiary (i) ceases or fails to be solvent, or generally fails to pay, or
admits in writing its inability to pay, its debts as they become due, subject to
applicable grace periods, if any, whether at stated maturity or otherwise, (ii)
voluntarily ceases to conduct its business in the ordinary course, (iii)
commences any Insolvency Proceeding with respect to itself, or (iv) takes any
action to effectuate or authorize any of the foregoing; or

          (g) Involuntary Proceedings. (i) Any involuntary Insolvency Proceeding
              -----------------------
is commenced or filed against the Company or any Material Subsidiary, or any
writ, judgment, warrant of attachment, execution or similar process, is issued
or levied against a substantial part of the Company's or any Material
Subsidiary's properties, and any such proceeding or petition shall not be
dismissed, or such writ, judgment, warrant of attachment, execution or similar
process shall not be released, vacated or fully bonded within 60 days after
commencement, filing or levy, (ii) the Company or any Material Subsidiary admits
the material allegations of a petition against it in any Insolvency Proceeding,
or an order for relief (or similar order under non-U.S. law) is ordered in any
Insolvency Proceeding, or (iii) the Company or any Material Subsidiary
acquiesces in the appointment of a receiver, trustee, custodian, conservator,
liquidator, mortgagee in possession (or agent therefor), or other similar Person
for itself or a substantial portion of its property or business; or

          (h) ERISA. (i) An ERISA Event shall occur with respect to a Pension
              -----
Plan or Multiemployer Plan which has resulted or could reasonably be expected to
result in liability of the Company under Title IV of ERISA to the Pension Plan,
Multiemployer Plan or the PBGC in an aggregate amount in excess of $10,000,000,
(ii) the aggregate amount of Unfunded Pension Liability among all Pension Plans
at any time exceeds $10,000,000, or (iii) the Company or any ERISA Affiliate
shall fail to pay when due, after the expiration of any applicable grace period,
any installment payment with respect to its withdrawal liability under Section
4201 of ERISA under a Multiemployer Plan in an aggregate amount in excess of
$10,000,000; or

          (i) Monetary Judgments. One or more non-interlocutory judgments,
              ------------------
non-interlocutory orders, decrees or arbitration awards is entered against the
Company or any Subsidiary involving in the aggregate a liability (to the extent
not covered by independent third-party insurance as to which the insurer does
not dispute coverage) as to any single or related series of transactions,
incidents or conditions, of $20,000,000 or more, and the same shall remain
unsatisfied, unvacated and unstayed pending appeal for a period of 10 days after
the entry thereof; or

          (j) Non-Monetary Judgments. Any non-monetary judgment, order or decree
              ----------------------
is entered against the Company or any Subsidiary which has a Material Adverse
Effect, and there shall be any period of 30 consecutive days during which a stay
of enforcement of such judgment or order, by reason of a pending appeal or
otherwise, shall not be in effect; or

                                       52

<PAGE>

          (k) Change of Control. There occurs any Change of Control; or
              -----------------

          (l) Adverse Change. There occurs a Material Adverse Effect; or
              --------------

          (m) Invalidity of Subordination Provisions. The subordination
              --------------------------------------
provisions of any agreement or instrument governing any Indebtedness which is
subordinated to the Indebtedness hereunder is for any reason revoked,
invalidated or otherwise breached by the Company or any Subsidiary, or otherwise
ceases to be in full force and effect as a result of any act or omission of the
Company or any Subsidiary, or the Company or any Subsidiary otherwise contests
in any manner the validity or enforceability thereof or denies that it has any
further liability or obligation thereunder.

     8.02 Remedies. If any Event of Default occurs, the Agent shall, at the
          --------
request of, or may, with the consent of, the Majority Banks,

          (a) declare the commitment of each Bank to make Loans to be
terminated, whereupon such commitments shall be terminated;

          (b) declare the unpaid principal amount of all outstanding Loans, all
interest accrued and unpaid thereon, and all other amounts owing or payable
hereunder or under any other Loan Document to be immediately due and payable,
without presentment, demand, protest or other notice of any kind, all of which
are hereby expressly waived by the Company; and

          (c) exercise on behalf of itself and the Banks all rights and remedies
available to it and the Banks under the Loan Documents or applicable law;

provided, however, that upon the occurrence of any event specified in subsection
--------  -------
(f) or (g) of Section 8.01 (in the case of clause (i) of subsection (g) upon the
expiration of the 60-day period mentioned therein), the obligation of each Bank
to make Loans shall automatically terminate and the unpaid principal amount of
all outstanding Loans and all interest and other amounts as aforesaid shall
automatically become due and payable without further act of the Agent or any
Bank.

     8.03 Rights Not Exclusive. The rights provided for in this Agreement and
          --------------------
the other Loan Documents are cumulative and are not exclusive of any other
rights, powers, privileges or remedies provided by law or in equity, or under
any other instrument, document or agreement now existing or hereafter arising.

                                   ARTICLE IX

                                    THE AGENT
                                    ---------

     9.01 Appointment and Authorization of Agent. Each Bank hereby irrevocably
          --------------------------------------
appoints, designates and authorizes the Agent to take such action on its behalf
under the provisions of this Agreement and each other Loan Document and to
exercise such powers and perform such duties as are expressly delegated to it by
the terms of this Agreement or any other Loan Document, together with such
powers as are reasonably incidental thereto. Notwithstanding any provision to
the contrary contained elsewhere herein or in any other Loan

                                       53

<PAGE>

Document, the Agent shall not have any duties or responsibilities, except those
expressly set forth herein, nor shall the Agent have or be deemed to have any
fiduciary relationship with any Bank or participant, and no implied covenants,
functions, responsibilities, duties, obligations or liabilities shall be read
into this Agreement or any other Loan Document or otherwise exist against the
Agent. Without limiting the generality of the foregoing sentence, the use of the
term "agent" herein and in the other Loan Documents with reference to the Agent
is not intended to connote any fiduciary or other implied (or express)
obligations arising under agency doctrine of any applicable law. Instead, such
term is used merely as a matter of market custom, and is intended to create or
reflect only an administrative relationship between independent contracting
parties.

     9.02 Delegation of Duties. The Agent may execute any of its duties under
          --------------------
this Agreement or any other Loan Document by or through agents, employees or
attorneys-in-fact and shall be entitled to advice of counsel and other
consultants or experts concerning all matters pertaining to such duties. The
Agent shall not be responsible for the negligence or misconduct of any agent or
attorney-in-fact that it selects in the absence of gross negligence or willful
misconduct.

     9.03 Liability of Agent. No Agent-Related Person shall (a) be liable for
          ------------------
any action taken or omitted to be taken by any of them under or in connection
with this Agreement or any other Loan Document or the transactions contemplated
hereby (except for its own gross negligence or willful misconduct in connection
with its duties expressly set forth herein); or (b) be responsible in any manner
to any Bank or participant for any recital, statement, representation or
warranty made by the Company or any Subsidiary or Affiliate of the Company or
any officer thereof, contained herein or in any other Loan Document, or in any
certificate, report, statement or other document referred to or provided for in,
or received by the Agent under or in connection with, this Agreement or any
other Loan Document, or the validity, effectiveness, genuineness, enforceability
or sufficiency of this Agreement or any other Loan Document, or for any failure
of the Company or any other party to any Loan Document to perform its
obligations hereunder or thereunder. No Agent-Related Person shall be under any
obligation to any Bank or participant to ascertain or to inquire as to the
observance or performance of any of the agreements contained in, or conditions
of, this Agreement or any other Loan Document, or to inspect the properties,
books or records of the Company or any Affiliate thereof.

     9.04 Reliance by Agent.
          -----------------

          (a) The Agent shall be entitled to rely, and shall be fully protected
in relying, upon any writing, communication, signature, resolution,
representation, notice, consent, certificate, affidavit, letter, telegram,
facsimile, telex or telephone message, statement or other document or
conversation believed by it to be genuine and correct and to have been signed,
sent or made by the proper Person or Persons, and upon advice and statements of
legal counsel (including counsel to the Company), independent accountants and
other experts selected by the Agent. The Agent shall be fully justified in
failing or refusing to take any action under any Loan Document unless it shall
first receive such advice or concurrence of the Majority Banks as it deems
appropriate and, if it so requests, it shall first be indemnified to its
satisfaction by the Banks against any and all liability and expense which may be
incurred by it by reason of taking or continuing to take any such action. The
Agent shall in all cases be fully protected in acting, or

                                       54

<PAGE>

in refraining from acting, under this Agreement or any other Loan Document in
accordance with a request or consent of the Majority Banks or all the Banks, if
required hereunder, and such request and any action taken or failure to act
pursuant thereto shall be binding upon all the Banks and participants. Where
this Agreement expressly permits or prohibits an action unless the Majority
Banks otherwise determine, the Agent shall, and in all other instances, the
Agent may, but shall not be required to, initiate any solicitation for the
consent or a vote of the Banks.

          (b) For purposes of determining compliance with the conditions
specified in Section 4.01, each Bank that has signed this Agreement shall be
deemed to have consented to, approved or accepted or to be satisfied with, each
document or other matter either sent by the Agent to such Bank for consent,
approval, acceptance or satisfaction, or required thereunder to be consented to
or approved by or acceptable or satisfactory to a Bank.

     9.05 Notice of Default. The Agent shall not be deemed to have knowledge or
          -----------------
notice of the occurrence of any Default or Event of Default, except with respect
to defaults in the payment of principal, interest and fees required to be paid
to the Agent for the account of the Banks, unless the Agent shall have received
written notice from a Bank or the Company referring to this Agreement,
describing such Default or Event of Default and stating that such notice is a
"notice of default." The Agent will notify the Banks of its receipt of any such
notice. The Agent shall take such action with respect to such Default or Event
of Default as may be directed by the Majority Banks in accordance with Article
VIII; provided, however, that unless and until the Agent has received any such
      --------  -------
direction, the Agent may (but shall not be obligated to) take such action, or
refrain from taking such action, with respect to such Default or Event of
Default as it shall deem advisable or in the best interest of the Banks.

     9.06 Credit Decision; Disclosure of Information by Agent. Each Bank
          ---------------------------------------------------
acknowledges that no Agent-Related Person has made any representation or
warranty to it, and that no act by the Agent hereafter taken, including any
consent to and acceptance of any assignment or review of the affairs of the
Company and its Subsidiaries or any Affiliate thereof, shall be deemed to
constitute any representation or warranty by any Agent-Related Person to any
Bank as to any matter, including whether Agent-Related Persons have disclosed
material information in their possession. Each Bank represents to the Agent that
it has, independently and without reliance upon any Agent-Related Person and
based on such documents and information as it has deemed appropriate, made its
own appraisal of and investigation into the business, prospects, operations,
property, financial and other condition and creditworthiness of the Company and
its respective Subsidiaries, and all applicable bank or other regulatory laws
relating to the transactions contemplated hereby, and made its own decision to
enter into this Agreement and to extend credit to the Company. Each Bank also
represents that it will, independently and without reliance upon any
Agent-Related Person and based on such documents and information as it shall
deem appropriate at the time, continue to make its own credit analysis,
appraisals and decisions in taking or not taking action under this Agreement and
the other Loan Documents, and to make such investigations as it deems necessary
to inform itself as to the business, prospects, operations, property, financial
and other condition and creditworthiness of the Company. Except for notices,
reports and other documents expressly required to be furnished to the Banks by
the Agent herein, the Agent shall not have any duty or responsibility to provide
any Bank with any credit or other information concerning the business,
prospects, operations, property, financial and

                                       55

<PAGE>

other condition or creditworthiness of the Company, its Subsidiaries or any of
their respective Affiliates which may come into the possession of any
Agent-Related Person.

     9.07 Indemnification of Agent. Whether or not the transactions contemplated
          ------------------------
hereby are consummated, the Banks shall indemnify upon demand each Agent-Related
Person (to the extent not reimbursed by or on behalf of the Company and without
limiting the obligation of the Company to do so), pro rata, and hold harmless
each Agent-Related Person from and against any and all Indemnified Liabilities
incurred by it; provided, however, that no Bank shall be liable for the payment
                --------  -------
to any Agent-Related Person of any portion of such Indemnified Liabilities to
the extent determined in a final, nonappealable judgment by a court of competent
jurisdiction to have resulted from such Person's own gross negligence or willful
misconduct; provided, however, that no action taken in accordance with the
            --------  -------
directions of the Majority Banks shall be deemed to constitute gross negligence
or willful misconduct for purposes of this Section. Without limitation of the
foregoing, each Bank shall reimburse the Agent upon demand for its ratable share
of any costs or out-of-pocket expenses (including Attorney Costs) incurred by
the Agent in connection with the preparation, execution, delivery,
administration, modification, amendment or enforcement (whether through
negotiations, legal proceedings or otherwise) of, or legal advice in respect of
rights or responsibilities under, this Agreement, any other Loan Document, or
any document contemplated by or referred to herein, to the extent that the Agent
is not reimbursed for such expenses by or on behalf of the Company. The
undertaking in this Section shall survive termination of the Commitments, the
payment of all Obligations hereunder and the resignation of the Agent.

     9.08 Agent in its Individual Capacity. The Agent and its Affiliates may
          --------------------------------
make loans to, issue letters of credit for the account of, accept deposits from,
acquire equity interests in and generally engage in any kind of banking, trust,
financial advisory, underwriting or other business with the Company, its
Subsidiaries and each of their respective Affiliates as though the Agent were
not the Agent hereunder and without notice to or consent of the Banks. The Banks
acknowledge that, pursuant to such activities, the Agent or its Affiliates may
receive information regarding the Company or its Affiliates (including
information that may be subject to confidentiality obligations in favor of the
Company or such Affiliate) and acknowledge that the Agent shall be under no
obligation to provide such information to them. With respect to its Loans, the
Agent shall have the same rights and powers under this Agreement as any other
Bank and may exercise such rights and powers as though it were not the Agent and
the terms "Bank" and "Banks" include the Agent in its individual capacity.

     9.09 Successor Agent. The Agent may resign as Agent upon 30 days' notice to
          ---------------
the Banks. If the Agent resigns under this Agreement, the Majority Banks shall
appoint from among the Banks a successor Agent for the Banks which successor
Agent shall be consented to by the Company at all times other than during the
existence of an Event of Default (which consent of the Company shall not be
unreasonably withheld or delayed). If no successor Agent is appointed prior to
the effective date of the resignation of the Agent, the Agent may appoint, after
consulting with the Banks and the Company, a successor Agent from among the
Banks. Upon the acceptance of its appointment as successor Agent hereunder, the
Person acting as such successor Agent shall succeed to all the rights, powers
and duties of the retiring Agent and the respective terms "Agent," shall mean
such successor Agent and the retiring Agent's appointment, powers and duties as
Agent shall be terminated. After any retiring Agent's resignation hereunder as

                                       56

<PAGE>

Agent, the provisions of this Article IX and Sections 10.04 and 10.05 shall
inure to its benefit as to any actions taken or omitted to be taken by it while
it was Agent under this Agreement. If no successor Agent has accepted
appointment as Agent by the date which is 30 days following a retiring Agent's
notice of resignation, the retiring Agent's resignation shall nevertheless
thereupon become effective and the Banks shall perform all of the duties of the
Agent hereunder until such time, if any, as the Majority Banks appoint a
successor agent as provided for above.

                                   ARTICLE X

                                  MISCELLANEOUS
                                  -------------

     10.01 Amendments, Etc. No amendment or waiver of any provision of this
           ---------------
Agreement or any other Loan Document, and no consent to any departure by the
Company therefrom, shall be effective unless in writing signed by the Majority
Banks and the Company and acknowledged by the Agent, and each such waiver or
consent shall be effective only in the specific instance and for the specific
purpose for which given; provided, however, that no such amendment, waiver or
                         --------  -------
consent shall, unless in writing and signed by each of the Banks directly
affected thereby and by the Company, and acknowledged by the Agent, do any of
the following:

          (a) extend or increase the Commitment of any Bank (or reinstate any
Commitment terminated pursuant to Section 8.02);

          (b) postpone any date fixed by this Agreement or any other Loan
Document for any payment or mandatory prepayment of principal, interest, fees or
other amounts due to the Banks (or any of them) hereunder or under any other
Loan Document;

          (c) reduce the principal of, or the rate of interest specified herein
on, any Loan or (subject to clause (ii) of the proviso below) any fees or other
amounts payable hereunder or under any other Loan Document, or change the manner
of computation of any financial covenant to the extent used in determining the
Applicable Margin that would result in a reduction of any interest rate on any
Loan; provided, however, that only the consent of the Majority Banks shall be
      --------  -------
necessary to amend the definition of "Default Rate" or to waive any obligation
of the Company to pay interest at the Default Rate;

          (d) change the percentage of the Commitments or of the aggregate
unpaid principal amount of the Loans which is required for the Banks or any of
them to take any action hereunder; or

          (e) amend this Section, or Section 2.13, or any provision herein
                                     ------------
providing for consent or other action by all the Banks;

and; provided further, that (i) no amendment, waiver or consent shall, unless in
     -------- -------
writing and signed by the Agent in addition to the Majority Banks or each
directly-affected Bank, as the case may be, affect the rights or duties of the
Agent under this Agreement or any other Loan Document, and (ii) the Fee Letter
may be amended, or rights or privileges thereunder waived, in a writing executed
only by the respective parties thereto. Notwithstanding anything to the contrary
herein, any Bank that has failed to fund any portion of the Commitment on any
Borrowing Date, shall not have any right to approve or disapprove any amendment,
waiver or

                                       57

<PAGE>

consent hereunder, except that the Pro Rata Share of such Bank may not be
increased without the consent of such Bank.

     10.02 Notices and Other Communications; Facsimile Copies.
           --------------------------------------------------

          (a) General. Unless otherwise expressly provided herein, all notices
              -------
and other communications provided for hereunder shall be in writing (including
by facsimile transmission) and mailed, faxed or delivered, to the address,
facsimile number or (subject to subsection (c) below) electronic mail address
specified for notices on Schedule 10.02; or, in the case of the Company or the
                         --------------
Agent, to such other address as shall be designated by such party in a notice to
the other parties, and in the case of any other party, to such other address as
shall be designated by such party in a notice to the Company and the Agent. All
such notices and other communications shall be deemed to be given or made upon
the earlier to occur of (i) actual receipt by the intended recipient, and (ii)
(A) if delivered by hand or by courier, when signed for by the intended
recipient; (B) if delivered by mail, four Business Days after deposit in the
mails, postage prepaid; (C) if delivered by facsimile, when sent and receipt has
been confirmed by telephone (on a Business Day); and (D) if delivered by
electronic mail (which form of delivery is subject to the provisions of
subsection (c) below), when delivered; provided, however, that notices and other
                                       --------  -------
communications to the Agent shall not be effective until actually received by
the Agent. Any notice or other communication permitted to be given, made or
confirmed by telephone hereunder shall be given, made or confirmed by means of a
telephone call to the intended recipient at the number specified on Schedule
                                                                    --------
10.02, it being understood and agreed that a voicemail message shall in no event
-----
be effective as a notice, communication or confirmation hereunder.

          (b) Effectiveness of Facsimile Documents and Signatures. Loan
              ---------------------------------------------------
Documents may be transmitted and/or signed by facsimile. The effectiveness of
any such documents and signatures shall, subject to applicable law, have the
same force and effect as manually-signed originals and shall be binding on the
Company, the Agent and the Banks. The Agent may also require that any such
documents and signatures be confirmed by a manually-signed original thereof;
provided, however, that the failure to request or deliver the same shall not
--------  -------
limit the effectiveness of any facsimile document or signature.

          (c) Limited Use of Electronic Mail. Electronic mail and Internet and
              ------------------------------
intranet websites may be used only to distribute routine communications, such as
financial statements and other information as provided in Section 6.02, and to
                                                          -------------
distribute Loan Documents for execution by the parties thereto, and may not be
used for any other purpose.

          (d) Reliance by Agent and Banks. The Agent and the Banks shall be
              ---------------------------
entitled to rely and act upon any notices purportedly given by or on behalf of
the Company even if (i) such notices were not made in a manner specified herein,
were incomplete or were not preceded or followed by any other form of notice
specified herein, or (ii) the terms thereof, as understood by the recipient,
varied from any confirmation thereof. The Company shall indemnify each
Agent-Related Person and each Bank from all losses, costs, expenses and
liabilities resulting from the reliance by such Person on each notice
purportedly given by or on behalf of the Company; provided that such indemnity
                                                  --------
shall not be available to the extent that such losses, costs, expenses and
liabilities resulted solely from the gross negligence or willful misconduct of
such Person.

                                       58

<PAGE>

All telephonic notices to and other communications with the Agent pursuant to
Section 2 may be recorded by the Agent, and each of the parties hereto hereby
consents to such recording.

     10.03 No Waiver; Cumulative Remedies. No failure by any Bank or the Agent
           ------------------------------
to exercise, and no delay by any such Person in exercising, any right, remedy,
power or privilege hereunder shall operate as a waiver thereof; nor shall any
single or partial exercise of any right, remedy, power or privilege hereunder
preclude any other or further exercise thereof or the exercise of any other
right, remedy, power or privilege. The rights, remedies, powers and privileges
herein provided are cumulative and not exclusive of any rights, remedies, powers
and privileges provided by law.

     10.04 Attorney Costs, Expenses and Taxes. The Company agrees (a) within 30
           ----------------------------------
calendar days after demand, to pay or reimburse the Agent for all reasonable
costs and expenses incurred in connection with the development, preparation,
negotiation, execution and syndication of this Agreement and the other Loan
Documents and any amendment, waiver, consent or other modification of the
provisions hereof and thereof (whether or not the transactions contemplated
hereby or thereby are consummated), and the consummation and administration of
the transactions contemplated hereby and thereby, including all reasonable
Attorney Costs; and (b) within five Business Days after demand, to pay or
reimburse the Agent and each Bank for all costs and expenses incurred in
connection with the enforcement, attempted enforcement, or preservation of any
rights or remedies under this Agreement or the other Loan Documents (including
all such costs and expenses incurred during any "workout" or restructuring in
respect of the Obligations and during any legal proceeding, including any
Insolvency Proceeding), including all Attorney Costs. The foregoing costs and
expenses shall include all search, filing, recording, title insurance and
appraisal charges and fees and taxes related thereto, and other out-of-pocket
expenses incurred by the Agent and the cost of independent public accountants
and other outside experts retained by the Agent or any Bank. The agreements in
this Section shall survive the termination of the Commitments and repayment of
all other Obligations.

     10.05 Indemnification by the Company. Whether or not the transactions
           ------------------------------
contemplated hereby are consummated, the Company shall indemnify and hold
harmless each Agent-Related Person, each Bank and their respective Affiliates,
directors, officers, employees, counsel, agents and attorneys-in-fact
(collectively the "Indemnitees") from and against any and all liabilities,
                   -----------
obligations, losses, damages, penalties, claims, demands, actions, judgments,
suits, costs, expenses and disbursements (including reasonable Attorney Costs)
of any kind or nature whatsoever which may at any time be imposed on, incurred
by or asserted against any such Indemnitee in any way relating to or arising out
of or in connection with (a) the execution, delivery, enforcement, performance
or administration of any Loan Document or any other agreement, letter or
instrument delivered in connection with the transactions contemplated thereby or
the consummation of the transactions contemplated thereby; (b) any Commitment or
Loan or the use or proposed use of the proceeds therefrom; (c) any actual or
alleged presence or release of Hazardous Materials on or from any property
currently or formerly owned or operated by the Company, or any Environmental
Claims related in any way to the Company; or (d) any actual or prospective
claim, litigation, investigation or proceeding relating to any of the foregoing,
whether based on contract, tort or any other theory (including any investigation
of, preparation for, or defense of any pending or threatened claim,
investigation, litigation or proceeding) and regardless of whether any
Indemnitee is a party thereto (all the foregoing,

                                       59

<PAGE>

collectively, the "Indemnified Liabilities"), in all cases, whether or not
                   -----------------------
caused by or arising, in whole or in part, out of the negligence of the
Indemnitee; provided that such indemnity shall not, as to any Indemnitee, be
            --------
available to the extent that such liabilities, obligations, losses, damages,
penalties, actions, judgments, suits, costs, expenses or disbursements resulted
solely from the gross negligence or willful misconduct of such Indemnitee. The
agreements in this Section shall survive the resignation of the Agent, the
replacement of any Bank, the termination of the Commitments and the repayment,
satisfaction or discharge of all the other Obligations. All amounts due under
this Section 10.05 shall be payable within ten Business Days after demand
therefor.

     10.06 Payments Set Aside. To the extent that the Company makes a payment to
           ------------------
the Agent or any Bank, or the Agent or any Bank exercises its right of set-off,
and such payment or the proceeds of such set-off or any part thereof is
subsequently invalidated, declared to be fraudulent or preferential, set aside
or required (including pursuant to any settlement entered into by the Agent or
such Bank in its discretion) to be repaid to a trustee, receiver or any other
party, in connection with any Insolvency Proceeding or otherwise, then (a) to
the extent of such recovery, the obligation or part thereof originally intended
to be satisfied shall be revived and continued in full force and effect as if
such payment had not been made or such set-off had not occurred; and (b) each
Bank severally agrees to pay to the Agent upon demand its applicable share of
any amount so recovered from or repaid by the Agent, plus interest thereon from
the date of such demand to the date such payment is made at a rate per annum
equal to the Federal Funds Rate from time to time in effect.

     10.07 Successors and Assigns.
           ----------------------

          (a) The provisions of this Agreement shall be binding upon and inure
to the benefit of the parties hereto and their respective successors and assigns
permitted hereby, except that the Company may not assign or otherwise transfer
any of its rights or obligations hereunder without the prior written consent of
each Bank (and any attempted assignment or transfer by the Company without such
consent shall be null and void). Nothing in this Agreement, expressed or
implied, shall be construed to confer upon any Person (other than the parties
hereto, their respective successors and assigns permitted hereby, Participants
to the extent provided in subsection (d) of this Section and, to the extent
expressly contemplated hereby, the Indemnitees) any legal or equitable right,
remedy or claim under or by reason of this Agreement.

          (b) Any Bank may at any time assign to one or more Eligible Assignees
all or a portion of its rights and obligations under this Agreement (including
all or a portion of its Commitment and the Loans (including for purposes of this
subsection (b), at the time owing to it); provided that (i) so long as no Event
of Default has occurred and is continuing, the Company consents thereto (each
such consent not to be unreasonably withheld or delayed), (ii) except in the
case of an assignment of the entire remaining amount of the assigning Bank's
Commitment and the Loans at the time owing to it or in the case of an assignment
to a Bank or an Affiliate of a Bank or an Approved Fund with respect to a Bank,
the aggregate amount of the Commitment (which for this purpose includes Loans
outstanding thereunder) subject to each such assignment, determined as of the
date the Assignment and Assumption with respect to such assignment is delivered
to the Agent or, if "Trade Date" is specified in the Assignment and Assumption,
as of the Trade Date, shall not be less than $5,000,000 unless each of the Agent
and, so long as no

                                       60

<PAGE>

Event of Default has occurred and is continuing, the Company otherwise consents
(each such consent not to be unreasonably withheld or delayed), (iii) each
partial assignment shall be made as an assignment of a proportionate part of all
the assigning Bank's rights and obligations under this Agreement with respect to
the Loans or the Commitment assigned, and (iv) the parties to each assignment
shall execute and deliver to the Agent an Assignment and Assumption in the form
of Exhibit E ("Assignment and Assumption"), together with a processing and
   ---------   -------------------------
recordation fee of $3,500. Subject to acceptance and recording thereof by the
Agent pursuant to subsection (c) of this Section, from and after the effective
date specified in each Assignment and Assumption, the Eligible Assignee
thereunder shall be a party to this Agreement and, to the extent of the interest
assigned by such Assignment and Assumption, have the rights and obligations of a
Bank under this Agreement, and the assigning Bank thereunder shall, to the
extent of the interest assigned by such Assignment and Assumption, be released
from its obligations under this Agreement (and, in the case of an Assignment and
Assumption covering all of the assigning Bank's rights and obligations under
this Agreement, such Bank shall cease to be a party hereto but shall continue to
be entitled to the benefits of Sections 3.01, 3.03, 3.04 and 10.5 with respect
to facts and circumstances occurring prior to the effective date of such
assignment). Upon request, the Company (at its expense) shall execute and
deliver new or replacement Notes to the assigning Bank and the assignee Bank;
provided, that the assigning Bank shall have delivered to the Company either
--------
each original Note to be replaced, marked "canceled", or its executed standard
form of lost note indemnity. Any assignment or transfer by a Bank of rights or
obligations under this Agreement that does not comply with this subsection shall
be treated for purposes of this Agreement as a sale by such Bank of a
participation in such rights and obligations in accordance with subsection (d)
of this Section.

          (c) The Agent, acting solely for this purpose as an agent of the
Company, shall maintain at the Agent's Payment Office a copy of each Assignment
and Assumption delivered to it and a register for the recordation of the names
and addresses of the Banks, and the Commitments of, and principal amounts of the
Loans owing to, each Bank pursuant to the terms hereof from time to time (the
"Register"). The entries in the Register shall be conclusive, and the Company,
 --------
the Agent and the Banks may treat each Person whose name is recorded in the
Register pursuant to the terms hereof as a Bank hereunder for all purposes of
this Agreement, notwithstanding notice to the contrary. The Register shall be
available for inspection by the Company and any Bank, at any reasonable time and
from time to time upon reasonable prior notice.

          (d) Any Bank may at any time, without the consent of, or notice to,
the Company or the Agent, sell participations to any Person (other than a
natural person or the Company or any of the Company's Affiliates or Subsidiaries
(each, a "Participant") in all or a portion of such Bank's rights and/or
          -----------
obligations under this Agreement (including all or a portion of its Commitment
and/or the Loans owing to it); provided that (i) such Bank's obligations under
                               --------
this Agreement shall remain unchanged, (ii) such Bank shall remain solely
responsible to the other parties hereto for the performance of such obligations,
and (iii) the Company, the Agent and the other Banks shall continue to deal
solely and directly with such Bank in connection with such Bank's rights and
obligations under this Agreement. Any agreement or instrument pursuant to which
a Bank sells such a participation shall provide that such Bank shall retain the
sole right to enforce this Agreement and to approve any amendment, modification
or waiver of any provision of this Agreement; provided that such agreement or
                                              --------
instrument may provide that such Bank will

                                       61

<PAGE>

not, without the consent of the Participant, agree to any amendment, waiver or
other modification that would (i) postpone any date upon which any payment of
money is scheduled to be paid to such Participant, or (ii) reduce the principal,
interest, fees or other amounts payable to such Participant. Subject to
subsection (e) of this Section, the Company agrees that each Participant shall
be entitled to the benefits of Sections 3.01, 3.03 and 3.04 to the same extent
as if it were a Bank and had acquired its interest by assignment pursuant to
subsection (b) of this Section. To the extent permitted by law, each Participant
also shall be entitled to the benefits of Section 10.09 as though it were a
Bank, provided such Participant agrees to be subject to Section 2.13 as though
it were a Bank.

          (e) A Participant shall not be entitled to receive any greater payment
under Section 3.01 or 3.03 than the applicable Bank would have been entitled to
receive with respect to the participation sold to such Participant (determined
as if the Bank had not sold such participation), unless the sale of the
participation to such Participant is made with the Company's prior written
consent. A Participant that would be a Foreign Bank if it were a Bank shall not
be entitled to the benefits of Section 3.01 unless the Company is notified of
the participation sold to such Participant and such Participant agrees, for the
benefit of the Company, to comply with Section 10.16 as though it were a Bank.

          (f) Any Bank may at any time pledge or assign a security interest in
all or any portion of its rights under this Agreement (including under its
Notes, if any) to secure obligations of such Bank, including any pledge or
assignment to secure obligations to a Federal Reserve Bank; provided that no
                                                            --------
such pledge or assignment shall release such Bank from any of its obligations
hereunder or substitute any such pledgee or assignee for such Bank as a party
hereto.

     10.08 Confidentiality. Each of the Agent and the Banks agrees to maintain
           ---------------
the confidentiality of the Information (as defined below), except that
Information may be disclosed (a) to its and its Affiliates' directors, officers,
employees and agents, including accountants, legal counsel and other advisors
(it being understood that the Persons to whom such disclosure is made will be
informed of the confidential nature of such Information and instructed to keep
such Information confidential); (b) to the extent requested by any regulatory
authority; (c) to the extent required by applicable laws or regulations or by
any subpoena or similar legal process; (d) to any other party to this Agreement;
(e) in connection with the exercise of any remedies hereunder or any suit,
action or proceeding relating to this Agreement or the enforcement of rights
hereunder; (f) subject to an agreement containing provisions substantially the
same as those of this Section, to (i) any Eligible Assignee of or Participant
in, or any prospective Eligible Assignee of or Participant in, any of its rights
or obligations under this Agreement or (ii) any direct or indirect contractual
counterparty or prospective counterparty (or such contractual counterparty's or
prospective counterparty's professional advisor) to any credit derivative
transaction relating to obligations of the Company; (g) with the consent of the
Company; (h) to the extent such Information (i) becomes publicly available other
than as a result of a breach of this Section or (ii) becomes available to the
Agent or any Bank on a nonconfidential basis from a source other than the
Company; or (i) to the National Association of Insurance Commissioners or any
other similar organization or any nationally recognized rating agency that
requires access to information about a Bank's or its Affiliates' investment
portfolio in connection with ratings issued with respect to such Bank or its
Affiliates. For the purposes of this Section, "Information" means all
information received from the Company relating to the Company or its business,
-----------
other

                                       62

<PAGE>

than any such information that is available to the Agent or any Bank on a
nonconfidential basis prior to disclosure by the Company; provided that, in the
                                                          --------
case of information received from the Company after the date hereof, such
information is clearly identified in writing at the time of delivery as
confidential. Any Person required to maintain the confidentiality of Information
as provided in this Section shall be considered to have complied with its
obligation to do so if such Person has exercised the same degree of care to
maintain the confidentiality of such Information as such Person would accord to
its own confidential information.

     10.09 Set-off. In addition to any rights and remedies of the Banks provided
           -------
by law, upon the occurrence and during the continuance of any Event of Default,
each Bank is authorized at any time and from time to time, without prior notice
to the Company, any such notice being waived by the Company (on its own behalf
and on behalf of its Subsidiaries) to the fullest extent permitted by law, to
set off and apply any and all deposits (general or special, time or demand,
provisional or final) at any time held by, and other indebtedness at any time
owing by, such Bank to or for the credit or the account of the respective Loan
Parties against any and all Obligations owing to such Bank, now or hereafter
existing, irrespective of whether or not the Agent or such Bank shall have made
demand under this Agreement or any other Loan Document and although such
Obligations may be contingent or unmatured. Each Bank agrees promptly to notify
the Company and the Agent after any such set-off and application made by such
Bank; provided, however, that the failure to give such notice shall not affect
      --------  -------
the validity of such set-off and application.

     10.10 Automatic Debits of Fees. With respect to any commitment fee,
           ------------------------
utilization fee, arrangement fee, or other fee, or any other cost or expense
(including Attorney Costs) due and payable to the Agent or the Arranger under
the Loan Documents, the Company hereby irrevocably authorizes the Agent to debit
any deposit account of the Company with the Agent in an amount such that the
aggregate amount debited from all such deposit accounts does not exceed such fee
or other cost or expense. If there are insufficient funds in such deposit
accounts to cover the amount of the fee or other cost or expense then due, such
debits will be reversed (in whole or in part, in the Agent's sole discretion)
and such amount not debited shall be deemed to be unpaid. No such debit under
this Section shall be deemed a set-off.

     10.11 Interest Rate Limitation. Notwithstanding anything to the contrary
           ------------------------
contained in any Loan Document, the interest paid or agreed to be paid under the
Loan Documents shall not exceed the maximum rate of non-usurious interest
permitted by applicable law (the "Maximum Rate"). If the Agent or any Bank shall
                                  ------------
receive interest in an amount that exceeds the Maximum Rate, the excess interest
shall be applied to the principal of the Loans or, if it exceeds such unpaid
principal, refunded to the Company. In determining whether the interest
contracted for, charged, or received by the Agent or a Bank exceeds the Maximum
Rate, such Person may, to the extent permitted by applicable law, (a)
characterize any payment that is not principal as an expense, fee, or premium
rather than interest; (b) exclude voluntary prepayments and the effects thereof;
and (c) amortize, prorate, allocate, and spread in equal or unequal parts the
total amount of interest throughout the contemplated term of the Obligations.

     10.12 Counterparts. This Agreement may be executed in one or more
           ------------
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

                                       63

<PAGE>

     10.13 Integration. This Agreement, together with the other Loan Documents,
           -----------
comprises the complete and integrated agreement of the parties on the subject
matter hereof and thereof and supersedes all prior agreements, written or oral,
on such subject matter. In the event of any conflict between the provisions of
this Agreement and those of any other Loan Document, the provisions of this
Agreement shall control; provided that the inclusion of supplemental rights or
                         --------
remedies in favor of the Agent or the Banks in any other Loan Document shall not
be deemed a conflict with this Agreement. Each Loan Document was drafted with
the joint participation of the respective parties thereto and shall be construed
neither against nor in favor of any party, but rather in accordance with the
fair meaning thereof.

     10.14 Survival of Representations and Warranties. All representations and
           ------------------------------------------
warranties made hereunder and in any other Loan Document or other document
delivered pursuant hereto or thereto or in connection herewith or therewith
shall survive the execution and delivery hereof and thereof. Such
representations and warranties have been or will be relied upon by the Agent and
each Bank, regardless of any investigation made by the Agent or any Bank or on
their behalf and notwithstanding that the Agent or any Bank may have had notice
or knowledge of any Default or Event of Default at the time of the Borrowers,
and shall continue in full force and effect as long as any Loan or any other
Obligation shall remain unpaid or unsatisfied.

     10.15 Severability. Any provision of this Agreement and the other Loan
           ------------
Documents to which the Company is a party that is prohibited or unenforceable in
any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of
such prohibition or unenforceability without invalidating the remaining
provisions thereof, and any such prohibition or unenforceability in any
jurisdiction shall not invalidate or render unenforceable such provision in any
other jurisdiction.

     10.16 Tax Forms. Each Bank that is not a "United States person" within the
           ---------
meaning of Section 7701(a)(30) of the Code (a "Foreign Bank") shall deliver to
                                               ------------
the Agent, prior to receipt of any payment subject to withholding under the Code
(or upon accepting an assignment of an interest herein), two duly signed
completed copies of either IRS Form W-8BEN or any successor thereto (relating to
such Person and entitling it to an exemption from, or reduction of, withholding
tax on all payments to be made to such Person by the Company pursuant to this
Agreement) or IRS Form W-8ECI or any successor thereto (relating to all payments
to be made to such Person by the Company pursuant to this Agreement) or such
other evidence satisfactory to the Company and the Agent that such Person is
entitled to an exemption from, or reduction of, U.S. withholding tax. Thereafter
and from time to time, each such Person shall (i) promptly submit to the Agent
such additional duly completed and signed copies of one of such forms (or such
successor forms as shall be adopted from time to time by the relevant United
States taxing authorities) as may then be available under then current United
States laws and regulations to avoid, or such evidence as is satisfactory to the
Company and the Agent of any available exemption from or reduction of, United
States withholding taxes in respect of all payments to be made to such Person by
the Company pursuant to this Agreement, (ii) promptly notify the Administrative
Agent of any change in circumstances which would modify or render invalid any
claimed exemption or reduction, and (iii) take such steps as shall not be
materially disadvantageous to it, in the reasonable judgment of such Bank, and
as may be reasonably necessary (including the re-designation of its Lending
Office) to avoid any requirement of applicable Laws that the Company make any
deduction or withholding for taxes from amounts

                                       64

<PAGE>

payable to such Person. If such Person fails to deliver the above forms or other
documentation, then the Agent may withhold from any interest payment to such
Person an amount equivalent to the applicable withholding tax imposed by
Sections 1441 and 1442 of the Code, without reduction.

          (a) Upon the request of the Agent, each Bank that is a "United States
person" within the meaning of Section 7701(a)(30) of the Code shall deliver to
the Agent two duly signed completed copies of IRS Form W-9. If such Bank fails
to deliver such forms, then the Agent may withhold from any interest payment to
such Bank an amount equivalent to the applicable back-up withholding tax imposed
by the Code, without reduction.

          (b) If any Governmental Authority asserts that the Agent did not
properly withhold or backup withhold, as the case may be, any tax or other
amount from payments made to or for the account of any Bank, such Bank shall
indemnify the Agent therefor, including all penalties and interest, any taxes
imposed by any jurisdiction on the amounts payable to the Administrative Agent
under this Section, and costs and expenses (including Attorney Costs) of the
Agent. The obligation of the Banks under this Section shall survive the
termination of the Commitments, repayment of all Obligations and the resignation
of the Agent.

     10.17 Governing Law.
           -------------

          (a) THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE
WITH, the LAW OF THE STATE OF CALIFORNIA APPLICABLE TO AGREEMENTS MADE AND TO BE
PERFORMED ENTIRELY WITHIN SUCH STATE; PROVIDED THAT THE Agent AND EACH BANK
                                      --------
SHALL RETAIN ALL RIGHTS ARISING UNDER FEDERAL LAW.

          (b) ANY LEGAL ACTION OR PROCEEDING WITH RESPECT TO THIS AGREEMENT OR
ANY OTHER LOAN DOCUMENT MAY BE BROUGHT IN THE COURTS OF THE STATE OF CALIFORNIA
OR OREGON OR OF THE UNITED STATES FOR THE NORTHERN DISTRICT OF CALIFORNIA OR
OREGON, AND BY EXECUTION AND DELIVERY OF THIS AGREEMENT, THE COMPANY, THE Agent
AND EACH BANK CONSENTS, FOR ITSELF AND IN RESPECT OF ITS PROPERTY, TO THE
NON-EXCLUSIVE JURISDICTION OF THOSE COURTS. THE COMPANY, THE Agent AND EACH BANK
IRREVOCABLY WAIVES ANY OBJECTION, INCLUDING ANY OBJECTION TO THE LAYING OF VENUE
OR BASED ON THE GROUNDS OF FORUM NON CONVENIENS, WHICH IT MAY NOW OR HEREAFTER
HAVE TO THE BRINGING OF ANY ACTION OR PROCEEDING IN SUCH JURISDICTION IN RESPECT
OF ANY LOAN DOCUMENT OR OTHER DOCUMENT RELATED THERETO. THE COMPANY, THE Agent
AND EACH BANK WAIVES PERSONAL SERVICE OF ANY SUMMONS, COMPLAINT OR OTHER
PROCESS, WHICH MAY BE MADE BY ANY OTHER MEANS PERMITTED BY THE LAW OF SUCH
STATE.

     10.18 Waiver of Right to Trial by Jury. EACH PARTY TO THIS AGREEMENT HEREBY
           --------------------------------
EXPRESSLY WAIVES ANY RIGHT TO TRIAL BY JURY OF ANY CLAIM, DEMAND, ACTION OR
CAUSE OF ACTION ARISING UNDER ANY LOAN DOCUMENT OR IN ANY WAY CONNECTED WITH OR
RELATED OR INCIDENTAL TO THE

                                       65

<PAGE>

DEALINGS OF THE PARTIES HERETO OR ANY OF THEM WITH RESPECT TO ANY LOAN DOCUMENT,
OR THE TRANSACTIONS RELATED THERETO, IN EACH CASE WHETHER NOW EXISTING OR
HEREAFTER ARISING, AND WHETHER FOUNDED IN CONTRACT OR TORT OR OTHERWISE; AND
EACH PARTY HEREBY AGREES AND CONSENTS THAT ANY SUCH CLAIM, DEMAND, ACTION OR
CAUSE OF ACTION SHALL BE DECIDED BY COURT TRIAL WITHOUT A JURY, AND THAT ANY
PARTY TO THIS AGREEMENT MAY FILE AN ORIGINAL COUNTERPART OR A COPY OF THIS
SECTION WITH ANY COURT AS WRITTEN EVIDENCE OF THE CONSENT OF THE SIGNATORIES
HERETO TO THE WAIVER OF THEIR RIGHT TO TRIAL BY JURY.

                                       66

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Bridge Loan
Agreement to be duly executed and delivered in San Francisco, California, by
their proper and duly authorized officers as of the day and year first above
written.

                                          MENTOR GRAPHICS CORPORATION

                                          By:    /s/ Gregory K. Hinckley
                                                 -------------------------------
                                          Name:    Gregory K. Hinckley
                                          Title:   President

                                          By:    /s/ Dennis Weldon
                                                 -------------------------------
                                          Name:    Dennis Weldon
                                          Title:   Treasurer

                                          BANK OF AMERICA, N.A.,
                                          as Agent and as a Bank

                                          By:    /s/ Kevin McMahon
                                                 -------------------------------
                                          Name:    Kevin McMahon
                                          Title:   Managing Director

<PAGE>

                                  SCHEDULE 2.01

                         COMMITMENTS AND PRO RATA SHARES
                         -------------------------------

Bank                    Commitment     Pro Rata Share
----                    ----------     --------------
Bank of America, N.A.   $125,000,000        100%

         TOTAL          $125,000,000        100%

<PAGE>

                                 SCHEDULE 10.02

          OFFSHORE AND DOMESTIC LENDING OFFICES, ADDRESSES FOR NOTICES
          ------------------------------------------------------------

MENTOR GRAPHICS CORPORATION
---------------------------

Address for Notices:
--------------------

Mentor Graphics Corporation
8005 S.W. Boeckman Road
Wilsonville, OR 97070-7777
Attention:        Dean Freed
Telephone:        (503) 685-1295
Facsimile:        (503) 685-7707
Website: www.mentorg.com
         ---------------

BANK OF AMERICA, N.A.,
----------------------
     as Agent
     --------

Borrowing Notices:
------------------

Bank of America, N.A.
Credit Services-Agency
1850 Gateway Boulevard, 5th Floor
Concord, California 94520-3281
Attention:        Brian Graybill
Telephone:        (925) 675-8414
Facsimile:        (888) 969-9147
E-mail:    brian.graybill@bankofamerica.com

Agent's Payment Office:
-----------------------

Bank of America, N.A.
ABA 121-000-358
Attention:  PSO #5693
1850 Gateway Boulevard, 5th Floor
Concord, California 94520
For Credit to Account No.:  12336-16087

All Other Notices:
------------------

Bank of America, N.A.,
Agency Management - Mail CA5-701-05-19
1455 Market Street, 5th Floor
San Francisco, California  94103-1399
Attention:  Matthew A. Gabel, Vice President

                                       1

<PAGE>

Telephone:        (415) 436-2614
Facsimile:        (415) 503-5060
E-mail:  matthew.gabel@bankofamerica.com
         -------------------------------

BANK OF AMERICA, N.A.,
----------------------
       as Bank
       -------

Domestic and Offshore Lending Office:
-------------------------------------

Bank of America, N.A.
Global Payment Operations
CA4-706-05-09
1850 Gateway Boulevard, 5th floor
Concord, California 94520-3281
Attention:        Brian Graybill
Telephone:        (925) 675-8414
Facsimile:        (888) 969-9147
E-mail:    brian.graybill@bankofamerica.com

Notices (other than Borrowing Notices and
-----------------------------------------
Notices of Conversion/Continuation):
------------------------------------

Bank of America, N.A.,
Mail Code CA5-705-12-08
555 California Street - 12th Floor
San Francisco, California  94104
Attention:        Kevin McMahon, Managing Director
Telephone:        (415) 622-8088
Facsimile:        (415) 622-4057
Email: kevin.mcmahon@bankofamerica.com

                                       2<PAGE>

                                                                   Exhibit 10.1

July 3, 2001

Gary J. Franza
11632 N. 128th Place
Scottsdale, AZ 85259

Dear Gary,

We are very excited about having the opportunity to work with you at WatchGuard.
As a company, we thrive on the entrepreneurial spirit and excitement that feeds
our continued growth and success in the fast-paced and high-growth network
security marketplace. Specifically, we are an industry leader and innovative
company that continually strives to create superior network security products
and services that are easier to deploy and more cost effective than the
competition. As the senior executive of out worldwide sales organization, and
an officer of the company (subject to Board of Director approval), you will be
responsible for creating and executing a distribution channel and field
marketing strategy that continues our strong growth and places WatchGuard at the
"top of the class" in the security industry. We believe that you have the
skills and ability to accomplish this goal.

We are very pleased to offer you the position of Senior Vice President of
Worldwide Sales. In this capacity, you will report directly to me. Your
compensation package will include an annual salary of $200,000.00 payable in
increments of $8,333.34 on a semi-monthly basis (less applicable payroll taxes)
on the fifteenth and last business day of each month. You will also be eligible
for an annual commission and performance bonus program totaling $175,000.00
(commission paid monthly, and bonus paid quarterly) upon meeting mutually agreed
upon revenue targets and MBO's. Additionally, you will be eligible to receive a
sign-on bonus, upon execution of this agreement, totaling $50,000.00 (payable in
equal installments over a six (6) month period). However, in the event you
terminate your employment relationship with WatchGuard for any reason within one
(1) year from your hire date, you will pay to WatchGuard, within ten (10) days
of the date of your termination, the prorated amount of sign- on bonus that you
received from WatchGuard. You will also be eligible to participate in our stock
option plan with an award of 225,000 shares, subject to Board of Director
approval.

Under the terms of your options, if your employment terminates within
two (2) years following a Corporate Transaction, unless due to termination for
Cause or your leaving without Good Reason, all unvested options will accelerate
and become vested. Additionally, 50% of your unvested options will vest upon
consummation of a Corporate Transaction.  (These provisions and the capitalized
terms are described and defined in WatchGuard's 1996 Stock Option Plan)

Further, if your employment is terminated without Cause, or you leave
voluntarily for Good Reason within twenty four (24) months of date of
hire, you will receive a cash severance payment equal to six (6)
months of your Base Salary. The benefits described in this paragraph

<PAGE>

will be provided to you only if you execute a severance agreement
including a release of all claims in a form agreeable to the Company.

As you know, our corporate offices are located in Seattle, WA between
the wonderfully cultural international district and beautiful
historic Pioneer Square. The Puget Sound area is a very picturesque,
high quality of life, moderate cost of living area with water
activities at your doorstep and Mount Rainier a short drive away.
Seattle has consistently rated as one of the best cities in which to
live!  Based on the need for this key position to be located in
Seattle, our offer is contingent upon your permanent relocation to
Seattle, WA.

Should you accept this offer of employment, WatchGuard will reimburse
you for reasonable relocation expenses in consideration of your
relocation from Scottsdale, Arizona to Seattle, Washington. You may
submit receipts to WatchGuard for the following expenses:

..        Airfare from your home in Scottsdale to Seattle, if needed,
         for your immediate family;
..        Shipping/moving of your belongings, including up to thirty
         (30) days storage expenses;
..        Temporary housing cost (maximum one [1] month) for you to
         relocate to Seattle and locate a more permanent residence; and
..        Other reasonable expenses incurred during relocation (does
         not include meals).

WatchGuard will reimburse you for the above expenses you incur during
your relocation to Seattle. However, in the event you terminate your
employment relationship with WatchGuard for any reason within one (1)
year from your hire date, you will pay to WatchGuard, within ten (10)
days of the date of your termination, the prorated amount of
relocation expenses that you received in the form of reimbursement
from WatchGuard.

Gary, we offer a casual atmosphere and a fabulous package of benefits
including, but not limited to - a Paid Time Off program offering up
to 4 weeks of time away per year, a 401(k) Retirement Plan, an
Employee Assistance Program, Medical/Dental/Vision Insurance paid
entirely by WatchGuard for you, an Employee Stock Purchase Plan,
Short and Long-Term Disability benefits paid entirely by WatchGuard,
and Commuting/Parking benefits.

It is important to note that WatchGuard Technologies, Inc. is an
at-will employer. Nothing in this information constitutes an
employment contract. If there is a discrepancy between information
in this letter and any official plan documents or contract, the
official document will determine how the plans work and benefits are
paid.

As a Company employee, you will be required to sign and abide by
Company rules and regulations and sign and comply with a Proprietary
Information, Invention, and Non-Competition Agreement (attached
hereto). Additionally, you will be expected to sign and comply with
all Company policies that are applicable to you, including the
Company Policy Regarding Special Trading Procedures, the
International Business Activities Policy and the Procedures and
Guidelines for Public Disclosures and Communications with Analysts,
and any revisions to such policies. You will be a full-time
employee, which means that you may not accept employment or
consulting assignments of any nature with any other employer or
enterprise, without the prior written consent of the Board.

<PAGE>

Please review the attached forms and sign this letter in the
designated location indicating your acceptance of the terms outlined
within. In addition, please note your official start date with
WatchGuard Technologies in the space provided below.

Sincerely,

WATCHGUARD TECHNOLOGIES, INC.

/s/ James Cady

James Cady
President and COO

<PAGE>

                                  *********

Accepted and agreed to this __________ day of July, 2001 by:

        /s/ Gary Franza
----------------------------------
Gary Franza - signature

Official Start Date: ___________________

Enclosures:

Proprietary Information, Invention and Non Competition Agreement
Company Policy Regarding Special Trading Procedures
International Business Activities Policy
Procedures and Guidelines for Public Disclosures and Communications with
Analysts Employee Information Form
Copy of offer letter
W-4
I-9
Direct deposit form

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