Document:

<PAGE>
                                                                   Exhibit 10.2
                      PRAECIS PHARMACEUTICALS INCORPORATED

                         Executive Management Bonus Plan
                  (Amended and Restated as of January 30, 2001)
                               (the "Bonus Plan")

PURPOSE: To establish a bonus program for the senior executives of the Company
which links performance oriented objectives (defined and approved annually by
the Board of Directors) to a variable compensation award which is granted on an
annual basis, as a means to attract and retain senior level executives.

ELIGIBLE PARTICIPANTS: Participation in the Bonus Plan shall be limited to the
most senior level positions in the Company. The positions eligible include the
Chairman (assuming the Chairman is a member of the Company's management),
President, CEO, COO, CFO and Executive Vice President. The Board (or a
Compensation Committee if one is established which administers the Bonus Plan)
will have the continuing right to review and recommend other positions for
inclusion in the Bonus Plan. The grant of awards will be in the sole discretion
of the Board (or Compensation Committee).

PARTICIPATION LEVEL: The targeted value of an award granted under the Bonus Plan
(an "Award") as a percent of annual base salary by position is as follows (and
shall be subject to modification as the Board of Directors (or the Compensation
Committee) shall determine):

             Chairman and Chief Executive Officer                 50%
             President and Chief Operating Officer                30%
             Chief Financial Officer and Executive
                      Vice President Levels                       25%

The foregoing targeted Award values as a percent of annual base salary are based
on the attainment of the performance related objectives established at the start
of each year.

FORM OF AWARD: A mandatory portion of each Award shall be in the form of stock
options for a number of shares of common stock determined by multiplying 30% of
the total value of such Award (the "Mandatory Stock Award Value") by 1.50 (or
such other multiplier as the Board, or the Compensation Committee, shall
determine for any Bonus Plan year) (the "Multiplier"), and dividing that product
by the per share exercise price of such options. The remainder of each Award
shall be deemed

<PAGE>

to have an Award value equal to 70% of the total Award value (the "Elective
Award Value"), and shall be in the form of cash or stock options, to the extent
elected by the participant. Such election will be required to be made in each
year at such time as the Board of Directors (or the Compensation Committee)
determines, which in all cases shall be prior to the time an Award is granted in
respect of such year. To the extent a participant elects to receive stock
options, the number of shares of common stock subject to such stock options
shall be determined by multiplying the portion of the Elective Award Value
(which may be up to 100% of the Elective Award Value) as to which the
participant has elected to receive stock options (the "Elective Stock Award
Value") by the Multiplier, and dividing that product by the per share exercise
price of such options. Stock options awarded in accordance with the Bonus Plan
will be granted under the Company's Second Amended and Restated 1995 Stock
Option Plan, will be intended to be Incentive Stock Options (ISOs) to the extent
possible and will vest fully immediately upon grant.

Example of a
Bonus Plan Award:     Base Salary:                             $300,000
-----------------     Participation Eligible:                  50%
                      Current Market Price per share:          $25.00

                      Total value of Award:                    $150,000

                      Mandatory Portion of Award in the
                      form of Stock Options:

                         Mandatory Stock Award Value
                         (30% of $150,000 or $45,000)
                         multiplied by the Multiplier (1.50)
                         = $67,500, divided by per share
                         option exercise price:              Options for 2,700
                                                             shares at $25.00
                                                             per share exercise
                                                             price

                      Elective Award Value (70% of total
                      Award value, or $105,000) divided
                      between stock options and cash as the
                      participant elects (such election to
                      be made prior to the grants of the
                      Award at the time required by the
                      Board (or Compensation Committee))

                                       2

<PAGE>

                      Assume Elective Award Value is
                      divided equally between stock
                      options and cash):
                      Cash:
                      Stock options:                         $52,500

                         Elective Stock Award Value
                         (50% of $105,000, or $52,500,
                         multiplied by the Multiplier
                         (1.50) = $78,750, divided by per
                         share option exercise price:        Options for 3,150
                                                             shares at $25.00
                                                             per share exercise
                                                             price

                      Summary of Example Award
                      ------------------------
                      Cash Payment:                          $52,500
                      Stock options  (Quantity; Exercise
                       Price; Vesting):                      5,850 shares;
                                                             $25.00 per share;
                                                             Immediate

TERM: The first year of the Bonus Plan was 1998; the Bonus Plan will continue
from year to year unless terminated by the Board of Directors, which it may do
at any time.

ADMINISTRATION; AMENDMENT: The Bonus Plan will be administered by the Board of
Directors or, if established and delegated such authority, a Compensation
Committee, which in either case, shall have full power and authority to
interpret and make all decisions regarding the Bonus Plan, which decisions and
interpretations shall be final and binding on all participants. The Board of
Directors or such Committee, may amend the Bonus Plan in any manner at any time
without the consent of any participant.

                                       3<PAGE>
                                                          Exhibit 10.17
[US BANK logo]

April 30, 2000

Mr. Fred Hall
Chief Financial Officer                              ACKNOWLEDGMENT COPY
Integrated Measurement Systems, Inc.
9525 SW Gemini Drive
Beaverton, OR 97008

Dear Fred:

I am pleased to advise you that U.S. Bank National Association, ("Bank"), has
approved the request of Integrated Measurement Systems, Inc., ("Borrower")
and confirms our commitment to provide the following credit facility,
("Facility")

BORROWER:                      Integrated Measurement Systems, Inc.

FACILITY:                      Revolving Line of Credit

AMOUNT:                        Up to $10,000,000.00 (Ten-Million Dollars)

PURPOSE:                       Working capital, general corporate purposes
                               and issuance of letters of credit up to
                               $1,000,000 in the aggregate.

EXPIRY/MATURITY:               Expiry of April 30, 2001
                               Standby Letters of Credit may have a maturity
                               of 4/30/2002

PRICING:
            FEES:              Facility fee of 20 basis points: $20,000

            INTEREST RATE:

<TABLE>
<CAPTION>

                D/TNW                    PRIME                   B/A               LIBOR
                -----                    -----                   ---               -----
       <S>                               <C>                  <C>                 <C>
       Greater than 0.40:1                +0%                  200 bps            200 bps
       Less than/equal to 0.40:1          +0%                  175 bps            175 bps
       Less than/equal to 0.30:1          +0%                  150 bps            150 bps
       Less than/equal to 0.20:1**        +0%                  125 bps            125 bps
       -----------------------------------------------------------------------------------
                      ** Current pricing
</TABLE>

              A.  Non-Prime rates are fixed for maturates and availability:
                  1, 2, or 3 months and 6 months for LIBOR. Not to exceed
                  Expiry Date.

              B.  Interest computed on the basis of a 360 day year and the
                  number of days elapsed.

                                  F-24
<PAGE>

                                                                        Page 2

REPAYMENT TERMS:               Optional advance note. Interest payable
                               monthly. Principal due at maturity.

COLLATERAL:                    Unsecured, but subject to a Quick Ratio test.
                               The revolving line of credit provides for a
                               flexible collateral position according to the
                               following matrix. The assets of the Borrower
                               which are referenced below include accounts and
                               inventory.

<TABLE>
<CAPTION>

                QUICK RATIO*                                 COLLATERAL

         <S>                                <C>
         Greater than 1.50:1.00              Unsecured with negative pledge agreement.
         --------------------------------------------------------------------------------
         Less than or equal to 1.50:1.00     Unsecured with negative pledge IF NOT
                                             BORROWING. IF BORROWING then F/S and S/A on
                                             accounts and inventory.
         --------------------------------------------------------------------------------
         Less than or equal to 1.15:1.00     Unsecured with negative pledge IF NOT
                                             BORROWING. IF BORROWING then F/S and S/A on
                                             accounts and inventory. Advances margined at
                                             80% of eligible accounts receivable less than
                                             30 DAYS AFTER DUE DATE
         ---------------------------------------------------------------------------------
                         * Quick Ratio is defined as ((CASH + NET TRADE A/R)/(CURRENT
                           LIABILITIES))

</TABLE>

                                ADVANCES:

                                When the 80% eligibility test is applicable to
                                the advance criteria the following will apply:
                                Ineligible accounts will include, progress
                                billings, retainages, (excluding normal
                                installation and acceptance retainages), cash
                                sales, COD, U.S. Government sales, potential
                                offsets, service charges and debtor aged
                                accounts. Additionally, Foreign receivables
                                which are evidenced by letters-of-credit will
                                be eligible subject to the aforementioned
                                eligibility criteria. Further refinement of
                                the advance may be necessary.

FOREIGN EXCHANGE CURRENCY TRANSACTIONS:

                                General parameters: Availability to
                                facilitate issuance of forward and spot
                                currency contracts up to the US Dollar
                                equivalent of $5,000,000. Maximum forward
                                settlement date 13 months, with the maturity
                                not to exceed October 30, 2001. Additional
                                details available upon request.

GENERAL CONDITIONS:

                               F-25

<PAGE>

                                                             Page 3

DOCUMENTATION:                  Execution of notes, security agreements, loan
                                agreements, borrowing resolutions, and other
                                documents as required by Bank on forms
                                prepared by Bank.

COVENANTS:                      The following covenants will be measured
                                quarterly:

                                -  Minimum Tangible Net Worth of $50,000,000
                                   PLUS 50% of Net Income with no deductions
                                   for losses.

                                -  Minimum Quick Ratio of 0.75 to 1.0.

                                Failure to comply with the above listed
                                covenant constitutes a default under the
                                terms of the Bank's documents.

FINANCIAL REPORTING:            Audited annual financial statements provided
                                within 90 days of fiscal year end.

                                Quarterly interim financial statements, (with
                                compliance certificate if Facility is
                                utilized), provided within 45 days of fiscal
                                quarter end.

OTHER:                          B/A in the pricing grid refers to Banker's
                                Acceptance rates.

                                LIBOR borrowings require a two day
                                notification period.

                                Both LIBOR and B/A advances may not be
                                prepaid.

                                Definitions of LIBOR and Prime and other
                                terms and conditions are contained in the
                                Promissory Note dated 5/01/2000, ("Note"). In
                                the event of any conflict between the terms
                                in the Note and the terms in this letter, the
                                terms in the Note shall prevail.

                                Bank notification and consent required for
                                multiple bank lines.

                                Advances under the Facility are contingent
                                upon compliance with the above and all terms,
                                conditions, limitations, and other provisions
                                contained in any security agreement, or other
                                document executed by Borrower at the request
                                of the Bank.

                                Disbursements under the Facility shall
                                terminate on the earlier occurrence of the
                                date indicated above as the Expiry Date or
                                the date which the Bank, in its sole
                                discretion, determines that there has been a
                                material adverse change in the financial
                                condition or management of the Borrower, or
                                determines that there has been any
                                non-compliance with any term or condition
                                stated herein. Non-compliance with the
                                conditions and terms of this commitment
                                letter will be considered as an event of
                                default,

                                   F-26
<PAGE>

                                                                 Page 4

                                entitling the Bank to all the provisions as
                                provided for in documents evidencing the
                                Facility.

If the above terms and conditions of this offer to extend credit are
acceptable to you, please sign and return the acknowledgment copy of this
letter. If not accepted, this offer shall expire on June 5, 2000.

Respectfully:

/s/ Ross A. Beaton

Ross A. Beaton
Vice President

UNDER OREGON LAW, MOST AGREEMENTS, PROMISES, AND COMMITMENTS MADE BY LENDERS
AFTER OCTOBER 3, 1989, CONCERNING LOANS AND OTHER CREDIT EXTENSIONS WHICH ARE
NOT FOR PERSONAL, FAMILY OR HOUSEHOLD PURPOSES OR SECURED SOLELY BY THE
BORROWER'S RESIDENCE MUST BE IN WRITING, EXPRESS CONSIDERATION AND BE SIGNED
BY THE LENDER TO BE ENFORCEABLE.

ACKNOWLEDGMENT
--------------

The undersigned hereby acknowledges and accepts this offer to extend credit
on the terms and conditions stated above.

INTEGRATED MEASUREMENT SYSTEMS, INC.

By:     /s/ Fred Hall
   -----------------------------

Title:  Chief Financial Officer
      --------------------------

Date:         6/5/00
      --------------------------

                                     F-27

<PAGE>

                                   EXHIBIT "A"

This exhibit is attached and made a part of that certain Promissory Note for
$10,000,000.00, dated MAY 1, 2000, from INTEGRATED MEASUREMENT SYSTEMS, INC.
to U.S. Bank National Association.

                              INCENTIVE PRICING MATRIX

Prime, LIBOR and B/A based pricing according to the company's Total
Liabilities/Tangible Net Worth ("D/TNW") as shown in the table below.
Calculated on a quarterly basis, pricing adjusted quarterly based upon the
previous quarter's result.

<TABLE>
<CAPTION>

           D/TNW                    PRIME                   LIBOR & B/A
           -----                    -----                   ------------
<S>                                <C>                     <C>

greater than          0.40          0 bps                   200 bps
less than or equal to 0.40          0 bps                   175 bps
less than or equal to 0.30          0 bps                   150 bps
less than or equal to 0.20          0 bps                   125 bps less than or equal to Initial Rate

</TABLE>

INTEGRATED MEASUREMENT SYSTEMS, INC.

By:      /s/ Fred Hall
   ---------------------------------

Title:  Chief Financial Officer
      ------------------------------

U.S. BANK NATIONAL ASSOCIATION

By:      [illegible]
    --------------------------------

Title:    Vice President
      ------------------------------

                                       F-28

<PAGE>

                            ALTERNATIVE RATE OPTIONS
                                 PROMISSORY NOTE
                               (PRIME RATE, LIBOR)

Obligor#:4316050871
         ----------
$10,000,000.00                                      Dated as of: MAY 1, 2000
--------------                                                   -----------

INTEGRATED MEASUREMENT SYSTEMS, INC.                  ("Borrower")
-----------------------------------

U.S. BANK NATIONAL ASSOCIATION                                   ("Lender")

1. TYPE OF CREDIT. This note is given evidence Borrower's obligation to repay
all sums which Lender may from time to time advance to Borrower ("Advances")
under a

     / /  single disbursement loan. Amounts loaned to Borrower hereunder will
          be disbursed in a single Advance in the amount shown in Section 2

     /X/  revolving line of credit. No Advances shall be made which create a
          maximum amount outstanding at any one time which exceeds the maximum
          amount shown in Section 2. However, Advances hereunder may be
          borrowed, repaid and reborrowed, and the aggregate Advances loaned
          hereunder from time to time may exceed such maximum amount

     / /  non-revolving line of credit. Each Advance made from time to time
          hereunder shall reduce the maximum amount available shown in Section 2
          Advances loaned hereunder which are repaid may not be reborrowed

2. PRINCIPAL BALANCE. The unpaid principal balance of all Advances
outstanding under this note ("Principal Balance") at one time shall not
exceed 10,000,000.00.

3. PROMISE TO PAY. For value received Borrower promises to pay to Lender or
order at Commercial Loan Servicing Center-West, the Principal Balance of this
note, with interest thereon at the rate(s) specified in Sections 4 and 11
below.

4. INTEREST RATE. The interest rate on the Principal Balance outstanding may
vary from time to time pursuant to the provisions of this note. Subject to the
provisions of this note, Borrower shall have the option from time to time of
choosing to pay interest at the rate or rates and for the applicable periods of
time based on the rate options provided herein; PROVIDED, however, that once
Borrower notifies Lender of the rate option chosen in accordance with the
provisions of this note, such notices shall be irrevocable. The rate options are
the Prime Borrowing Rate and the LIBOR Borrowing Rate, each as defined herein

(a)  DEFINITIONS. The following terms shall have the following meanings:

     "Business Day" means any day other than a Saturday, Sunday, or other day
that commercial banks in Portland, Oregon, Minneapolis, Minnesota, or New York
City are authorized or required by law to close, provided, however that when
used in connection with a LIBOR Rate, LIBOR Amount or LIBOR Interest Period such
term shall also exclude any day on which dealings in U.S. dollar deposits are
not carried on in the LondonInterbank market.

     "Dow Jones Page 3750" means the display designated as such on the Dow Jones
Markets Service (formerly known as Tolerato) (or such other page as may replace
page 3750 on that service for the purpose of displaying London Interbank offered
rates of major banks for the United States Dollar deposits).

     "LIBOR Amount" means each principal amount for which Borrower chooses to
have the LIBOR Borrowing Rate apply for any specified LIBOR Interest Period.

     "LIBOR Interest Period" means as to any LIBOR Amount, a period of 1,2,3
or 6 months commencing on the date the LIBOR Borrowing Rate becomes
applicable -thereto; PROVIDED, however that: (i) the first day of each LIBOR
Interest Period must be a Business Day; (ii) no LIBOR Interest Period shall
commence on or after MAY 31, 2001; (iii) no LIBOR Interest Period shall be
selected which would extend beyond MAY 31, 2001; (iv) no LIBOR Interest
Period shall  extend beyond the date of any principal payment required under
Section 6 of this note, unless the sum of the Prime Rate Amount, plus LIBOR
Amounts with LIBOR Interest Periods ending on or before the scheduled date of
such principal payment, plus principal amounts remaining unborrowed under a
line of credit, equals or exceeds the amount of such principal payment; (v)
any LIBOR Interest Period which would otherwise expire on a day which is not
a Business Day, shall be extended to the next succeeding Business Day, unless
the result of such extension would be to extend such LIBOR Interest Period
into another calendar month, in which event the LIBOR Interest Period shall
end on the immediately preceding Business Day; and (vi) any LIBOR Interest
Period 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 LIBOR Interest Period) shall end on the last Business Day of
a calendar month.

     "LIBOR Rate" means for any LIBOR Interest Period, the average offered
rate for deposits in United States Dollars (rounded upwards, if necessary, to
the nearest 1/16 of 1%) for delivery of such deposits on the first day of
such LIBOR Interest Period, for the number of months therein, which appears
on Dow Jones Page 3750 as of 11:00 a.m. London time (or such other time as of
which such rate appears) on the day that is two Business Days preceding the
first day of such LIBOR Interest Period; or the rate for such deposits
determined by Lender at such time based on such other published service of
general application as shall be selected by Lender for such purpose;
provided, that in lieu of determining the rate in the foregoing manner,
Lender may determine the rate based on the rates offered to Lender for
deposits in United States Dollars (rounded upwards, if necessary, to the
nearest 1/16 of 1%) in the interbank eurodollar market at such time for
delivery on the first day of such LIBOR Interest Period for the number of
months therein; and provided, further, that in any case the LIBOR Rate shall
be adjusted to take into account the maximum reserves required to be
maintained for Eurocurrency liabilities by banks during each such LIBOR
Interest Period as specified in Regulation D of the Board of Governors of the
Federal Reserve System or any successor regulation.

     "Prime Rate" means the rate on Interest which Lender from time to time
establishes as its prime or reference rate and is not, for example, the lowest
rate of interest which Lender collects from any borrower or class of borrowers.
When the Prime Rate is applicable under Section 4(b) or 11(b), the interest rate
hereunder shall be adjusted without notice effective on the day the Prime Rate
changes, but in no event shall the rate of interest be higher than allowed by
law.

     "Prime Rate Amount" means any portion of the Principal Balance bearing
interest at the Prime Borrowing Rate.

(b)  THE PRIME BORROWING RATE.

     (i) The Prime Borrowing Rate is a variable per annum rate equal to the
Prime Rate plus SEE ATTACHED EXHIBIT "A"% per annum.

     (ii) Whenever Borrower desires to use the Prime Borrowing Rate option,
Borrower shall give Lender notice orally or in writing in accordance with
Section 15 of this note, which notice shall specify the requested effective date
(which must be a Business Day) and principal amount of the Advance or increase
in the Prime Rate Amount, and whether Borrower is requesting a new Advance under
a line of credit or conversion of a LIBOR Amount to the Prime Borrowing Rate.

     (iii) Subject to Section 11 of this note, interest shall accrue on the
unpaid Principal Balance at the Prime Borrowing Rate unless and except to the
extent that the LIBOR Borrowing Rate is in effect.

(C)  THE LIBOR BORROWING RATE.

     (i) The LIBOR Borrowing Rate is the LIBOR Rate plus SEE ATTACHED EXHIBIT
"A"% per annum.

     (ii) Borrower may obtain LIBOR Borrowing Rate quotes from Lender before
10:00 a.m. (Portland, Oregon time) on any Business Day. Borrower may request an
Advance, conversion of any portion of the Prime Rate Amount to a LIBOR Amount or
a new LIBOR Interest Period for an existing LIBOR Amount, at such rate only by
giving Lender notice in accordance with Section 4(c) (iii) before 10:00 a.m.
(Portland, Oregon time) on such day.

                                                                     Page 1 of 4

                                      F-29
<PAGE>

     (iii) Whenever Borrower desires to use the LIBOR Borrowing Rate option,
Borrower shall give Lender irrevocable notice (either in writing or orally
and promptly confirmed in writing) no later that 10:00 a.m. (Portland, Oregon
time) two (2) Business Days prior to the desired effective date of such rate.
Any oral notice shall be given by, and any written notice or confirmation of
an oral notice shall be signed by, the person(s) authorized in Section 15 of
this note, and shall specify the requested effective date of the rate, LIBOR
Interest Period and LIBOR Amount, and whether Borrower is requesting a new
Advance at the LIBOR Borrowing Rate under a line of credit, conversion of all
or any portion of the Prime Rate Amount to a LIBOR Amount, or a new LIBOR
Interest Period for an outstanding LIBOR Amount. Notwithstanding any other
term of this note, Borrower may elect the LIBOR Borrowing Rate in the minimum
principal amount of $500,000.00 and in multiples of $100,000.00 above such
amount PROVIDED, however, that no more that N/A separate LIBOR Interest
Periods may be in effect at any one time.

     (iv) If at any time the LIBOR Rate is unascertainable or unavailable to
Lender or if LIBOR Rate loans become unlawful, the option to select the LIBOR
Borrowing Rate shall terminate immediately. If the LIBOR Borrowing Rate is then
in effect, (A) it shall terminate automatically with respect to all LIBOR
Amounts (i) on the last day of each then applicable LIBOR Interest Period, if
Lender may lawfully continue to maintain such loans, or (ii) immediately if
Lender may not lawfully continue to maintain such loans through such day, and
(B) subject to Section 11, the Prime Borrowing Rate automatically shall become
effective as to such amounts upon termination.

     (v) If at any time after the date hereof (A) any revision in or adoption
of any applicable law, rule, or regulation or in the interpretation or
administration thereof (i) shall subject Lender of its Eurodollar lending
office to any tax, duty or other charge, or change the basis of taxation of
payments to Lender with respect to any loans bearing interest based on the
LIBOR Rate, or (ii) shall impose or modify any reserve, insurance, special
deposit, or similar requirements against assets of, deposits with or for the
account of, or credit extended by Lender or its Eurodollar lending office, or
impose on Lender or its Eurodollar lending office any other condition
affecting any such loans, and (B) the result of any of the foregoing is (i)
to increase the cost to Lender of making or maintaining any such loans or
(ii) to reduce the amount of any sum receivable under this note by Lender or
its Eurodollar lending office. Borrower shall pay Lender within 15 days after
demand by Lender such additional amount as will compensate Lender for such
increased cost or reduction. The determination hereunder by Lender of such
additional amount shall be conclusive in the absence of manifest error. If
Lender demands compensation under this Section 4(c)(v), Borrower may upon
three (3) Business Days' notice to Lender pay the accrued interest on all
LIBOR Amounts, together with any additional amounts payable under Section
4(c)(vi). Subject to Section 11, upon Borrower's paying such accrued interest
and additional costs, the Prime Borrowing Rate immediately shall be effective
with respect to the unpaid principal balance of such LIBOR Amounts.

     (vi) Borrower will indemnify Lender upon demand against any loss or
expense which Lender may sustain or incur (including, without limitation, any
loss or expense sustained or incurred in obtaining, liquidating or employing
deposits or other funds acquired to effect, fund or maintain any portion of
the loan or any Advance) as a consequence of (A) any failure of Borrower to
make any payment when due of any amount due hereunder, (B) any failure of
Borrower to borrow, if permitted by the terms of this note, continue or
convert any portion of the Prime Rate Amount to a LIBOR Amount, on a date
specified therefor in a notice thereof, or (C) any payment, voluntary or
mandatory prepayment or payment on default or conversion of any LIBOR Amount
to the Prime Borrowing Rate, on a date other than the last day of the
applicable LIBOR Interest Period. Determinations by Lender of the amount
required to indemnify Lender shall be conclusive in the absence of manifest
error.

     (vii) Notwithstanding any provision of this note to the contrary, Lender
shall be entitled to fund and maintain its funding of all or any part of the
loan evidenced by this note in any manner it elects; it being understood,
however, that with respect to any LIBOR Amount, all determinations hereunder
shall be made as if Lender had actually funded and maintained each LIBOR Amount
during the LIBOR Interest Period applicable to it through the purchase of
deposits having a term corresponding to such LIBOR Interest Period and bearing
an interest rate equal to the LIBOR Rate for such LIBOR Interest Period (whether
or not Lender shall have granted any participations in such LIBOR Amounts).

     (viii) Notwithstanding any other term of this note, Borrower may not select
the LIBOR Borrowing Rate if an event of default hereunder has occurred and is
continuing.

     (ix) Nothing contained in this note, including without limitation the
determination of any LIBOR Interest Period or Lender's quotation of any LIBOR
Borrowing Rate, shall be construed to prejudice Lender's right, if any, to
decline to make any requested Advance or to require payment on demand.

5. COMPUTATION OF INTEREST. All interest under Section 4 and Section 11 will be
computed at the applicable rate based on a 360-day year and applied to the
actual number of days elapsed.

6. PAYMENT SCHEDULE.

(a) PRINCIPAL. Principal shall be paid.

     / /       on demand
     / /       on demand, or if no demand on____________
     /X/       on APRIL 30, 2001
     / /       subject to Section B. in installments of
               / /   _________________________ each plus accrued interest,
                    beginning on ___ and on the same day of each _______________
                    thereafter until _______________ when the entire Principal
                    Balance plus Interest thereon shall be due and payable.

               / /   _________________________ each, including accrued
                    interest, beginning on ___ and on the same day of each
                    _______________ thereafter until ____________ when the
                    entire Principal Balance plus interest thereon shall be due
                    and payable.

     / /
               ---------------------------------

(b) INTEREST

     (i)  Interest on the Prime Rate Amount shall be paid:

               /X/ on the 31ST day of MAY, 2000             and on the same
                   day of each MONTH thereafter prior to maturity and at
                   maturity.

               / / at maturity.

               / / at the time each principal installment is due and at
                   maturity.

               / / ___________________________

     (ii)      Interest on all LIBOR Amounts shall be paid:

               /X/  on the last day of the applicable LIBOR Interest Period, and
                    if such LIBOR Interest Period is longer than three months,
                    on the last day of each three month period occurring during
                    such LIBOR Interest Period, and at maturity.

               / /  on the ___ day of ________________ and on the same day of
                    each _____ thereafter prior to maturity and at maturity.
               / /  at maturity.
               / /  at the time each principal installment is due and at
                    maturity

               / /  ___________________________

7. PREPAYMENT.

(a)  Prepayments of all or any part of the Prime Rate Amount may be made at any
     time without penalty.

(b)  Except as otherwise specifically set forth herein, Borrower may not prepay
     all or any part of any LIBOR Amount or terminate any LIBOR Borrowing Rate,
     except on the last day of the applicable LIBOR Interest Period.

(c)  Principal prepayments will not postpone the date of or change the amount of
     any regularly scheduled payment. At the time of any principal prepayment,
     all accrued interest, fees, costs and expenses shall also be paid.

8. CHANGE IN PAYMENT AMOUNT. Each time the interest rate on this note changes
the holder of this note may, from time to time, in holder's sole discretion,
increase or decrease the amount of each of the installments remaining unpaid at
the time of such change in rate to an amount holder in its

                                                                     Page 2 of 4

                                   F-30

<PAGE>

sole discretion deems necessary to continue amortizing the Principal Balance at
the same rate established by the installment amounts specified in Section 6(a),
whether or not a "balloon" payment may also be due upon maturity of this note.
Holder shall notify the undersigned of each such change in writing. Whether or
not the installment amount is increased under this Section 8, Borrower
understands that, as a result of increases in the rate of interest, the final
payment due, whether or not a "balloon" payment, shall include the entire
Principal Balance and interest thereon then outstanding, and may be
substantially more than the installment specified in Section 6.

9. ALTERNATE PAYMENT DATE. Notwithstanding any other term of this note, if in
any month there is no day on which a scheduled payment would otherwise be due
(e.g. February 31), such payment shall be paid on the last banking day of that
month.

10. PAYMENT BY AUTOMATIC DEBIT.

/X/  Borrower hereby authorizes Lender to automatically deduct the amount of all
     principal and interest payments from account number 153605016689 with
     Lender. If there are insufficient funds in the account to pay the
     automatic deduction in full, Lender may allow the account to become
     overdrawn, or Lender may reverse the automatic deduction. Borrower
     will pay all the fees on the account which result from the automatic
     deductions, including any overdraft and non-sufficient funds charges.
     If for any reason Lender does not charge the account for a payment, or
     if an automatic payment is reversed, the payment is still due
     according to this note. If the account is a Money Market Account, the
     number of withdrawals from that account is limited as set out in the
     account agreement. Lender may cancel the automatic deduction at any
     time in its discretion.

Provided, however, if no account number is entered above, Borrower does not want
to make payments by automatic debit.

11. DEFAULT.

(a) Without prejudice to any right of Lender to require payment on demand or
to decline to make any requested Advance, each of the following shall be an
event of default: (i) Borrower fails to make any payment when due. (ii)
Borrower fails to perform or comply with any term, covenant or obligation in
this note or any agreement related to this note, or in any other agreement or
loan Borrower has with Lender or any affiliate of Lender. (iii) Borrower
defaults under any loan, extension of credit, security agreement, purchase or
sales agreement, or any other agreement, in favor of any other creditor or
person that may materially affect any of Borrower's property or Borrower's
ability to repay this note or perform Borrower's obligations under this note
or any related documents. (iv) Any representation or statement made or
furnished to Lender by Borrower or on Borrower's behalf is false or
misleading in any material respect either now or at the time made or
furnished. (v) Borrower dies, becomes insolvent, liquidates or dissolves, a
receiver is appointed for any part of Borrower's property, Borrower makes an
assignment for the benefit of creditors, or any proceeding is commenced
either by Borrower or against Borrower under any bankruptcy or insolvency
laws. (vi) Any creditor tries to take any of Borrower's property on or in
which Lender has a lien or security interest. This includes a garnishment of
any of Borrower's accounts with Lender.  (vii) Any of the events described in
this default section occurs with respect to any general partner in Borrower
or any guarantor of this note, or any guaranty of Borrower's indebtedness to
Lender ceases to be, or is asserted not to be, in full force and effect.
(viii) There is any material adverse change in the financial condition or
management of Borrower or Lender in good faith deems itself insecure with
respect to the payment or performance of Borrower's obligations to Lender. If
this note is payable on demand, the inclusion of specific events of default
shall prejudice Lender's right to require payment on demand or to decline to
make any requested Advance.

(b) Without prejudice to any right of Lender to require payment on demand, upon
the occurrence of an event of default, Lender may declare the entire unpaid
Principal Balance on this note and all accrued unpaid interest immediately due
and payable, without notice; provided, however, that if any proceeding under any
bankruptcy or insolvency law is commenced by or against Borrower, the
availability of Advances shall be immediately terminated without notice and the
entire Principal Balance and all accrued interest shall, without notice, become
immediately due and payable. Upon default, including failure to pay upon final
maturity, Lender, at its option, may also, if permitted under applicable law,
increase the interest rate on this note to a rate equal to the Prime Borrowing
Rate plus 5%. The interest rate will not exceed the maximum rate permitted by
applicable law. In addition, if any payment of principal or interest is 19 or
more days past due, Borrower will be charged a late charge of 5% of the
delinquent payment.

12. EVIDENCE OF PRINCIPAL BALANCE; PAYMENT ON DEMAND. Holder's records shall,
at any time, be conclusive evidence of the unpaid Principal Balance and
interest owing on this note. Notwithstanding any other provisions of this
note, in the event holder makes Advances hereunder which result in an unpaid
Principal Balance on this note which at any time exceeds the maximum amount
specified in Section 2, Borrower agrees that all such Advances, with
interest, shall be payable on demand.

13.

14. DEMAND NOTE. If this note is payable on demand, Borrower acknowledges and
agrees that (a) Lender is entitled to demand Borrower's immediate payment in
full of all amounts owing hereunder and (b) neither anything to the contrary
contained herein or in any other loan documents (including but not limited to
provisions relating to defaults, rights of cure, default rate of interest,
installment payments, late charges, periodic review of Borrower's financial
condition, and covenants) nor any act of Lender pursuant to any such provisions
shall limit or impair Lender's right or ability to require Borrower's payment in
full of all amounts owing hereunder immediately upon Lender's demand.

15. REQUESTS FOR ADVANCES.

(a) Any Advance may be made or interest rate option selected upon the written
request of Borrower (if an individual), any of the undersigned (if Borrower
consists of more than one individual), any person or persons authorized in
subsection (b) of this Section 15, and any person or persons otherwise
authorized to execute and deliver promissory notes to Lender on behalf of
Borrower.

(b) Borrower hereby authorizes any two of the following individuals to request
Advances and to select interest rate options:

KEITH BARNES, FRED HALL, DAVE ALLWORTH

unless Lender is otherwise instructed in writing.

(c) All Advances shall be disbursed by deposit directly to Borrower's account
number 153605016689 with Lender.

(d) Borrower agrees that Lender shall have no obligation to verify the
identity of any person making any request pursuant to this Section 15, and
Borrower assumes all risks of the validity and authorization of such
requests. In consideration of Lender agreeing, at its sole discretion, to
make Advances upon such requests, Borrower promises to pay holder, in
accordance with the provisions of this note, the Principal Balance together
with interest thereon and other sums due hereunder, although any Advances may
have been requested by a person or persons not authorized to do so.

16. PERIODIC REVIEW. Lender will review Borrower's credit accommodations
periodically. At the time of the review, Borrower will furnish Lender with
any additional information regarding Borrower's financial condition and
business operations that Lender requests. This information may include but is
not limited to, financial statements, tax returns, lists of assets and
liabilities, agings of receivables and payables, inventory schedules, budgets
and forecasts. If upon review, Lender, in its sole discretion, determines
that there has been a material adverse change in Borrower's financial
condition, Borrower will be in default. Upon default, Lender shall have all
rights specified herein.

17. NOTICES. Any notice hereunder may be given by ordinary mail, postage paid
and addressed to Borrower at the last known address of Borrower as shown on
holder's records. If Borrower consists of more that one person, notification of
any of said persons shall be complete notification of all.

18. ATTORNEY FEES. Whether or not litigation or arbitration is commenced,
Borrower promises to pay all costs of collecting overdue amounts. Without
limiting the foregoing, in the event that holder consults an attorney regarding
the enforcement of any of its rights under this note or any document securing
the same, or if this note is placed in the hands of an attorney for collection
or if suit or litigation is brought to enforce this note or any document
securing the same, Borrower promises to pay all costs thereof including such
additional sums as the court or arbitrator(s) may adjudge reasonable as
attorney fees, including without limitation, costs and attorney fees incurred
in any appellate court, in any proceeding under the bankruptcy code, or in any
receivership and post-judgment attorney fees incurred in enforcing any judgment.

19. WAIVERS; CONSENT. Each party hereto, whether maker, co-maker, guarantor or
otherwise, waives diligence, demand, presentment for payment, notice of
non-payment, protest and notice of protest and waives all defenses based on
suretyship or impairment of collateral. Without notice to Borrower and without
diminishing or affecting Lender's rights or Borrower's obligations hereunder,
Lender may deal in any manner with any person who at

                                                                     Page 3 of 4

                                      F-31
<PAGE>

any time is liable for, or provides any real or personal property collateral
for, any indebtedness of Borrower to Lender, including the indebtedness
evidence by this note. Without limiting the foregoing, Lender may, in its
sole discretion: (a) make secured or unsecured loans to Borrower and agree to
any number or waivers, modifications, extensions and renewals of any length
of such loans, including the loan evidenced by this note; (b) impair, release
(with or without substitution of new collateral), fail to perfect a security
interest in, fail to preserve the value of, fail to dispose of in accordance
with applicable law, any collateral provided by any person; (c) sue, fail to
sue, agree not to sue, release, and settle or compromise with, any person.

20. JOINT AND SEVERAL LIABILITY. All undertakings of the undersigned Borrowers
are joint and several and are binding upon any marital community of which any of
the undersigned are members. Holder's rights and remedies under this note shall
be cumulative.

21. SEVERABILITY. If any term or provision of this note is declared by a
court of competent jurisdiction to be illegal, invalid or unenforceable for
any reason whatsoever, such illegality, invalidity or unenforceability shall
not affect the balance of the terms and provisions hereof, which terms and
provisions shall remain binding and enforceable, and this note shall be
construed as if such illegal, invalid or unenforceable provision had not been
contained herein.

22. ARBITRATION.

(a) Either Lender or Borrower may require that all disputes, claims,
counterclaims and defenses, including those based on or arising from any alleged
tort ("Claims") relating in any way to this note or any transaction of which
this note is a part (the "Loan"), be settled by binding arbitration in
accordance with the Commercial Arbitration Rules of the American Arbitration
Association and Title 9 of the U.S. Code. All Claims will be subject to the
statutes of limitation applicable if they were litigated. This provision is void
if the Loan, at the time of the proposed submission to arbitration, is secured
by real property located outside of Oregon or Washington, or it the effect of
the arbitration procedure (as opposed to any Claims of Borrower) would be to
materially impair Lender's ability to realize on any collateral securing the
Loan.

(b) If arbitration occurs and each party's Claim is less than $100,000, one
neutral arbitrator will decide all issues; if any party's Claim is $100,000 or
more, three neutral arbitrators will decide all issues. All arbitrators will be
active Oregon State Bar members in good standing. All arbitration hearings will
be held in Portland, Oregon. In addition to all other powers, the arbitrator(s)
shall have the exclusive right to determine all issues of arbitrability.
Judgement on any arbitration award may be entered in any court with
jurisdiction.

(c) If either party institutes any judicial proceeding relating to the Loan,
such action shall not be a waiver of the right to submit any Claim to
arbitration. In addition, each has the right before, during and after any
arbitration to exercise any number of the following remedies, in any order or
concurrently: (i) setoff; (ii) self-help repossession; (iii) judicial or
non-judicial foreclosure against real or personal property collateral; and (iv)
provisional remedies, including injunction, appointment of receiver, attachment,
claim and delivery and replevin.

23. GOVERNING LAW. This note shall be governed by and construed and enforced
in accordance with the laws of the State of Oregon without regard to conflicts
of law principles; PROVIDED, however, that to the extent that Lender has great
rights or remedies under Federal Law, this provision shall not be deemed to
deprive Lender of such rights and remedies as may be available under Federal
Law.

24.  YEAR 2000. Borrower has reviewed and assessed it business operations and
     computer systems and applications to address the "year 2000 problem" (that
     is, that computer applications and equipment used by Borrower, directly or
     indirectly through third parties, may have been or may be unable to
     properly perform date-sensitive functions before, during and after January
     1, 2000). Borrower represents and warrants that the year 2000 problem has
     not resulted in and will not result in a material adverse change in
     Borrower's business condition (financial or otherwise), operations,
     properties or prospects or ability to repay Lender. Borrower agrees that
     this representation and warranty will be true and correct on and shall be
     deemed made by Borrower on each date Borrower requests any advance under
     this Agreement or Note or delivers any information to Lender, Borrower will
     promptly deliver to Lender such information relating to this representation
     and warranty as Lender requests from time to time.

25.  PRIOR NOTE. This Note is given in renewal and extension and not in novation
     of the following described indebtedness: That certain Promissory Note dated
     April 9, 1999, in the amount of $10,000,000.00 executed by Borrower payable
     to Lender. It is further agreed that all liens and security interest
     securing said indebtedness are hereby renewed and extended to secure the
     Note and all renewals, extensions and modifications thereof.

26.  DISCLOSURE.

     UNDER OREGON LAW, MOST AGREEMENTS, PROMISES AND COMMITMENTS MADE BY LENDERS
AFTER OCTOBER 3, 1989, CONCERNING LOANS AND OTHER CREDIT EXTENSIONS WHICH ARE
NOT FOR PERSONAL, FAMILY OR HOUSEHOLD PURPOSES OR SECURED SOLELY BY THE
BORROWER'S RESIDENCE MUST BE IN WRITING, EXPRESS CONSIDERATION AND BE SIGNED BY
THE LENDER TO BE ENFORCEABLE.

EACH OF THE UNDERSIGNED HEREBY ACKNOWLEDGES RECEIPT OF A COMPLETED COPY OF THIS
DOCUMENT.

INTEGRATED MEASUREMENT SYSTEMS, INC.
---------------------------------------------------------
BORROWER NAME (CORPORATION, PARTNERSHIP OR OTHER ENTITY)

/s/ Fred Hall      Chief Financial Officer
---------------------------------------------------------
By                         Title

================================================================================
For valuable consideration, Lender agrees to the terms of the arbitration
provision set forth in this note.

                                   U.S. BANK NATIONAL ASSOCIATION

                                   By: /s/ [ILLEGIBLE]
                                      ------------------------------------------
                                   Title: Vice President
                                         ---------------------------------------
                                   Date: 6-1-2000
                                        ----------------------------------------

                                                                     Page 4 of 4

                                    F-32

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