Document:

<PAGE>   1

                                                                 EXHIBIT 10.11.2

                                  AMENDMENT 1
                                       TO
                                 OEM AGREEMENT
                               (Cisco as Seller)

      This Amendment 1 to OEM Agreement (the "Agreement") is made as of the
20th of January, 2000 (the "Effective Date") by and between Cisco Systems,
Inc., a California corporation, having principal offices at 170 West Tasman
Drive, San Jose, California 95134-1706 ("Cisco") and Netro Corporation, a
California corporation having its principal place of business at 3860 North
First Street, San Jose, California 95134 ("Netro").

                                    RECITALS
      A.    Netro has been purchasing from Cisco the Cisco MGX 8220 shelves and
associated products, software and firmware pursuant to the OEM Agreement, dated
December 7, 1998, between Cisco and Netro (the "OEM Agreement"). The OEM
Agreement provides that Netro may purchase from Cisco the MGX 8220 shelves for a
fifteen (15) month period or until Netro had purchased [***] units of the MGX
8220 shelves.

      B.    The parties now desire to enter into this Amendment in order to
extend the time period during which Netro may purchase the MGX 8220 shelves and
to increase the number of shelves that Netro may purchase.

      NOW, therefore, in consideration of the terms and conditions of this
Agreement, the parties agree as follows:

1.    DEFINITIONS

      1.1   Unless otherwise defined herein, all capitalized terms shall have
the meaning ascribed to them in the OEM Agreement.

2.    AMENDMENT TO PURCHASE AND SALE TERMS AND CONDITIONS

      2.1   Section 1.4 of the OEM Agreement is hereby amended by replacing the
words "fifteen months thereafter" with "September 30, 2000." The parties
acknowledge and agree that the intent of this replacement is to permit Netro to
purchase Products until September 30, 2000 instead of the fifteen (15) month
period originally set forth in the OEM Agreement.

      2.2   Section 2 of the OEM Agreement is hereby amended by replacing all
occurrences of the figure "[***]" with the figure "[***]". The parties
acknowledge and agree that the intent of this replacement is to permit Netro to
purchase up to [***] units of the Products instead [***] as originally set forth
in the OEM Agreement.

3.    TERM

CONFIDENTIAL                        1

[***] Confidential treatment has been requested with respect to material omitted
      on this page. The omitted portions have been filed separately with the
      Commission.
<PAGE>   2
     3.1  Term.  This Amendment shall commence as of the Effective Date and
shall remain in effect so long as the OEM Agreement is in effect. This
Amendment shall terminate or expire upon termination or expiration of the OEM
Agreement.

4.   MISCELLANEOUS

     4.1  The terms and conditions of the OEM Agreement, including without
limitation miscellaneous terms and conditions set forth in Section 17, shall
apply to this Amendment. Except as expressly amended by this Amendment, all
terms and conditions of the OEM Agreement shall remain in full force and effect.

     IN WITNESS WHEREOF, the parties have executed this Agreement as of the day
and year first above written.

CISCO SYSTEMS, INC.                          NETRO CORPORATION

By: /s/ JON SHANTZ                           By: /s/ BEN-EFRAIM
    -------------------------------              -------------------------------
Name:  Jon Shantz                            Name:  Ben-Efraim
      -----------------------------                -----------------------------
Title: VP Market Development                 Title: CEO
       ----------------------------                 ----------------------------

                                       2<PAGE>   1
                                                                    EXHIBIT 10.1

                                    IMP, Inc.
            --------------------------------------------------------

                            STOCK PURCHASE AGREEMENT

                           Dated as of October 8, 1999

<PAGE>   2
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                     PAGE
<S>     <C>                                                                          <C>
Article 1      PURCHASE AND SALE OF STOCK..............................................1
        SECTION 1.1.    Delivery.......................................................1
Article 2      REPRESENTATIONS AND WARRANTIES OF COMPANY...............................1
        SECTION 2.1.    Organization, Standing and Qualification.......................1
        SECTION 2.2.    Capitalization.................................................1
        SECTION 2.3.    Validity of Stock..............................................2
        SECTION 2.4.    Subsidiaries...................................................2
        SECTION 2.5.    Financial Statements...........................................2
        SECTION 2.6.    Authorization; Approvals.......................................2
        SECTION 2.7.    No Conflict with Other Instruments.............................3
        SECTION 2.8.    Absence of Undisclosed Liabilities; Changes....................3
        SECTION 2.9.    Patents.  Trademarks and Other Intangible Assets...............3
        SECTION 2.10.   Taxes..........................................................3
        SECTION 2.11.   Litigation.....................................................4
        SECTION 2.13.   Private Offering...............................................4
        SECTION 2.14.   Fees and Commissions...........................................4
        SECTION 2.15.   Compliance with Environmental Laws.............................4
Article 3      REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE PURCHASER..............5
        SECTION 3.1.    Authorization..................................................5
        SECTION 3.2.    Investment Representations.....................................5
        SECTION 3.3.    Investment Experience; Access to Information...................5
        SECTION 3.4.    Absence of Registration........................................5
        SECTION 3.5.    Restrictions on Transfer.......................................5
        SECTION 3.6.    Transfer Instructions..........................................6
        SECTION 3.7.    Economic Risk..................................................6
        SECTION 3.8.    Fees and Commissions...........................................6
        SECTION 3.9.    Purchaser's Board of Directors Designee........................6
        SECTION 3.10.   Payment of Certain Expenses....................................7
        SECTION 3.11.   Wafer Purchase Commitment......................................7
Article 4      CONDITIONS TO OBLIGATIONS OF THE PURCHASER..............................7
        SECTION 4.1.    Conditions to Obligations  of the Purchaser....................7
</TABLE>

                                      -i-
<PAGE>   3

                               TABLE OF CONTENTS
                                  (continued)

<TABLE>
<CAPTION>
                                                                                     PAGE
<S>     <C>                                                                          <C>
Article 5      CONDITIONS TO OBLIGATIONS OF COMPANY....................................8
        SECTION 5.1.    Conditions to Obligations  of the Company......................8
Article 6      AFFIRMATIVE COVENANTS...................................................8
        SECTION 6.1.    Use of Proceeds................................................8
        SECTION 6.2.    Piggy-Back Registrations.......................................8
        SECTION 6.3.    Officers of the Company........................................9
        SECTION 6.4.    Right of First Offer...........................................9
Article 7      MISCELLANEOUS..........................................................10
        SECTION 7.1.    Survival of Agreements........................................10
        SECTION 7.2.    Notices.......................................................11
        SECTION 7.3.    Modifications; Waiver.........................................11
        SECTION 7.4.    Exculpation...................................................12
        SECTION 7.5.    Entire Agreement..............................................12
        SECTION 7.6.    Successors and Assigns........................................12
        SECTION 7.7.    Enforcement...................................................12
        SECTION 7.8.    Execution and Counterparts....................................12
        SECTION 7.9.    Governing Law and Severability................................12
        SECTION 7.10.   Headings......................................................13
        SECTION 7.11.   Confidentiality...............................................13
        SECTION 7.12.   No Solicitation...............................................13
        SECTION 7.13.   Termination...................................................14
        SECTION 7.14.   Indemnification...............................................14
        SECTION 7.15.   Teamasia's Future Investments in the Company..................15

ANNEX I - ADDITIONAL PURCHASER REPRESENTATIONS.......................................I-1
DISCLOSURE SCHEDULE .................................................................S-1
SCHEDULE 1.1 - CLOSING DATES......................................................S1.1-1
SCHEDULE 2.2(b) - WARRANTS.....................................................S2.2(b)-1
SCHEDULE 2.9 - PATENTS............................................................S2.9-1
SCHEDULE 2.10 - TAXES............................................................S2.10-1
SCHEDULE 2.12 - DEFAULT OF OBLIGATIONS ..........................................S2.12-1
SCHEDULE 3.11 - FOUNDRY SERVICES.................................................S3.11-1
EXHIBIT A - FORM OF LEGAL OPINION....................................................A-1
</TABLE>

                                      -ii-

<PAGE>   4

                            STOCK PURCHASE AGREEMENT

        Agreement, dated as of October 8, 1999 between IMP, Inc., a Delaware
corporation (the "Company") and Teamasia Semiconductors (India) Ltd., a limited
Indian corporation (the "Purchaser").

                                    ARTICLE 1
                           PURCHASE AND SALE OF STOCK

        SECTION 1.1. Delivery. Subject to the provisions of this Agreement, the
Purchaser agrees to purchase at the Closings (as defined below), and the Company
agrees to sell and issue to the Purchaser at the Closings, 671,173 shares (the
"Shares") of Common Stock of the Company, for the aggregate purchase price of
$2,050,000 ($3.05 per share). The purchase and sale of Shares (in the amounts
specified on Schedule 1.1) shall take place at the offices of the Company at
10:00 a.m. West Coast time on the dates set forth on Schedule 1.1, or at such
other time and place as the Company and Purchaser mutually agree upon in writing
(which time and place are designated as the "Closings" and which date is
designated as the "Closing Dates"). At each Closing, commencing with the October
15 Closing (at which Closing the Company shall deliver certificates representing
the Shares purchased on both the October 8, 1999 and October 15, 1999 Closing
Date), the Company shall deliver to the Purchaser a certificate representing the
Common Stock which the Purchaser is purchasing against delivery to the Company
by the Purchaser by wire transfer, certified check for immediately available
funds, or other manner approved by the Company, in the amount of the purchase
price therefor payable to the Company's order.

                                    ARTICLE 2
                    REPRESENTATIONS AND WARRANTIES OF COMPANY

        The Company represents and warrants that, except as set forth in the
Disclosure Schedules:

        SECTION 2.1. Organization, Standing and Qualification. The Company is a
corporation duly organized, validly existing and in good standing under the laws
of the State of Delaware and has full corporate power and corporate authority to
own, lease and operate its property and assets and to conduct its business as
presently conducted and as proposed to be conducted by it. The Company has full
corporate power and corporate authority to enter into and perform its
obligations under this Agreement, to carry out the transactions contemplated by
this Agreement. The nature of the Company's business and its ownership or
leasing of property do not require that the Company become qualified as a
foreign corporation in any state or jurisdiction where it is not qualified,
other than where the failure to so qualify will not have a material adverse
effect on the Company. Complete and correct copies of the articles and by-laws
of the Company, as amended to date, have been delivered to counsel for the
Purchaser.

        SECTION 2.2. Capitalization.

        (a) The capital stock of the Company consists of 50,000,000 shares of
authorized common stock, par value $0.01 per share ("Common Stock"), of which
3,372,731 shares are

<PAGE>   5

issued and outstanding as of the date of this Agreement and 617,279 shares are
reserved for issuance pursuant to employee stock purchase and/or option
ownership plans that have been adopted by the Company for officers, directors,
employees and consultants.

        (b) Except as set forth on Schedule 2.2, there are (i) no outstanding
warrants, options, convertible securities or rights to subscribe for or purchase
any capital stock or other securities from the Company, (ii) to the Company's
knowledge, no voting trusts or voting agreements among, or irrevocable proxies
executed by, shareholders of the Company, and (iii) no obligations (contingent
or otherwise) of the Company to purchase, redeem or otherwise acquire any shares
of its capital stock or any interest therein or to pay any dividend or make any
other distribution in respect thereof.

        SECTION 2.3. Validity of Stock. The Common Stock to be sold pursuant to
this Agreement, when issued, sold, and delivered in accordance with the terms of
this Agreement, will be duly and validly issued, fully paid and non-assessable.

        SECTION 2.4. Subsidiaries. The Company does not own any capital stock,
partnership interests or other equity interests of, or control, directly or
indirectly, any other corporation, partnership, association or business entity.

        SECTION 2.5. Financial Statements. (a) The Company has furnished the
Purchaser with its audited financial statements as of and for the year ended
March 28, 1999, and an audited balance sheet as of March 28, 1999 (the "Balance
Sheet") (together, the "1999 Financial Statements"). The 1999 Financial
Statements and the Balance Sheet are true and correct in all material respects,
are in accordance with the books and records of the Company, and have been
prepared in accordance with generally accepted accounting principles ("GAAP")
consistently applied, and fairly present the financial position of the Company
as of such date and the results of its operations for the periods then ended.

        (b) The unaudited balance sheet of the Company as of June 30, 1999 (the
"Current Balance Sheet") and the related unaudited statements of profit and loss
and cash flow, including the footnotes thereto (collectively, the "Current
Financial Statements"), for the three months then ended, a copy of which has
been made available to the Purchaser, fairly present, in conformity with
generally accepted accounting principles, applied on a basis consistent with the
financial statements referred to in subsection (a) of this Section, the
financial position of the Company as of such date and its results of operations
(subject to normal year-end adjustments). The 1999 Financial Statements and
Current Financial Statements are hereinafter referred to as the "Financial
Statements".

        SECTION 2.6. Authorization; Approvals. All action on the part of the
Company and its shareholders necessary for the authorization, execution,
delivery, and performance of all its obligations under this Agreement and for
the authorization, issuance, and delivery of the Common Stock being sold under
this Agreement, has been taken. This Agreement constitutes the valid and legally
binding obligation of the Company, enforceable against the Company in accordance
with its terms. The Company has obtained or will obtain prior to the Closings
all necessary consents, authorizations, approvals and orders, and has made all
registrations, qualifications, designations, declarations or filings with all
federal, state, or other relevant

                                       2
<PAGE>   6

governmental authorities required on the part of the Company in connection with
the consummation of the transactions contemplated by this Agreement.

        SECTION 2.7. No Conflict with Other Instruments. The execution, delivery
and performance of this Agreement does not and will not result in any violation
of, conflict with, or constitute a default under any terms or provision of (i)
the Company's articles of incorporation or bylaws; (ii) any judgment, decree or
order to which the Company is a party or by which its property is bound; (iii)
any agreement, contract, understanding, indenture or other instrument to which
the Company is a party, the effect of which would give rise to a material
adverse effect on the Company; or (iv) any statute, rule or governmental
regulation applicable to the Company or any of its property.

        SECTION 2.8. Absence of Undisclosed Liabilities; Changes. (a) To its
knowledge, the Company has no liability or obligation, which would have a
material adverse effect on the Company, absolute or contingent, including,
without limiting the generality of the foregoing, any tax liabilities due or to
become due, not reflected in the Current Balance Sheet, except (i) obligations
and liabilities incurred after the date of the Current Balance Sheet in the
ordinary course of business that are not individually or in the aggregate
material, (ii) obligations under contracts made in the ordinary course of
business that would not be required to be reflected in financial statements
prepared in accordance with GAAP and (iii) obligations under this Agreement.
Without limiting the generality of the foregoing, the Company does not know of,
and has no reasonable ground to believe that there is any basis for the
assertion against the Company of, any material liabilities of the Company.

        SECTION 2.9. Patents. Trademarks and Other Intangible Assets.

        (a) The Company has taken otherwise reasonable security measures to
protect the secrecy, confidentiality and value of all material intellectual
property of the Company.

        (b) To the knowledge of the Company, the Company has title and ownership
(or licenses to use in various cases) of all patents, trademarks, service marks,
trade names, copyrights, trade secrets, and other intellectual property rights
necessary for its business as now conducted or as currently proposed to be
conducted without any known conflict with or infringement of the rights of
others. Except as disclosed in Schedule 2.9 hereto, the Company has not received
any communications alleging that the Company has violated or, by conducting its
business as proposed, would violate any of the patents, trademarks, service
marks, trade names, copyrights or other intellectual property rights of any
other person or entity where any such allegation, if true, would be reasonably
likely to have a material adverse effect on the Company.

        SECTION 2.10. Taxes. The Company has accurately prepared and timely
filed all federal, state and local reports, returns, estimates, declarations,
information returns and statements with respect to taxes (together, "Tax
Returns") that are required to be filed by it and has paid or made provision for
the payment of all taxes due with respect to the periods covered by such Tax
Returns, in all material respects. Except as disclosed in Schedule 2.10, no
deficiency assessment or proposed adjustment of federal income taxes or state or
municipal taxes of the Company is pending and the Company has no knowledge of
any proposed liability for any

                                       3
<PAGE>   7

tax to be imposed where any such assessment or proposed adjustment, if adversely
decided, would be reasonably likely to have a material adverse effect on the
Company. For the purpose of this Section 2.10, "tax" or "taxes" shall mean all
federal, state, local or foreign taxes, including but not limited to income,
gross receipts, windfall profits, alternative minimum, value added, severance,
property, production, sales, use, license, excise, franchise, employment,
withholding or similar taxes, together with any interest, additions or penalties
with respect thereto and any interest in respect of such additions or penalties.

        SECTION 2.11. Litigation. Except as otherwise set forth herein, no
action, proceeding or governmental inquiry or investigation is pending or to the
knowledge of the Company threatened against (i) the Company or any of its
officers, directors or employees (in their capacity as such), (ii) any of the
Company's properties or (iii) to the knowledge of the Company, any material
consultant to the Company, in any case before any court, arbitration board or
tribunal or administrative or other governmental agency, nor is the Company
aware that there is any basis for the foregoing, where any such action,
proceeding, inquiry or investigation, if adversely decided, would be reasonably
likely to have a material adverse effect on the Company.

        SECTION 2.12. Relationship with Creditors. The Company is presently in
default of its monetary obligations to the parties listed in Schedule 2.12, as
described therein.

        SECTION 2.13. Private Offering. The Company agrees that neither the
Company nor anyone acting on its behalf has offered or will offer securities of
the Company or any part thereof or any similar securities for issuance or sale
to, or solicit any offer to acquire any of the same from, anyone so as to make
the issuance and sale of the Common Stock not exempt from the registration
requirements of Section 5 of the Securities Act of 1933, as amended (the
"Securities Act"). None of the shares of the Company's capital stock issued and
outstanding has been offered or sold in such a manner as to make the issuance
and sale of such shares not exempt from such registration requirements, and all
such shares of capital stock have been offered and sold in compliance with all
applicable federal and state securities laws.

        SECTION 2.14. Fees and Commissions. The Company has not retained, or
otherwise authorized to act, any finder, broker, agent, financial advisor or
other intermediary (collectively, "Intermediary") in connection with the
transactions contemplated by this Agreement and the Company shall indemnify and
hold harmless the Purchaser from liability for any compensation, to any
Intermediary retained or otherwise authorized to act by, or on behalf of, the
Company and the fees and expenses of defending against such liability or alleged
liability.

        SECTION 2.15. Compliance with Environmental Laws. To the knowledge of
the Company, it is not in violation of any agreement, instrument, judgment,
decree, or order, or federal, state, local or foreign statute, ordinance, rule
or regulation applicable to or binding upon it (including but not limited to any
environmental laws, rules and regulations), the violation of which would be
reasonably likely to have a material adverse effect on the Company. To the
knowledge of the Company, there is no contamination of any real property leased
or operated by the Company that could subject the Company to liability in excess
of $50,000 under any environmental laws or regulations.

                                       4
<PAGE>   8

                                    ARTICLE 3
           REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE PURCHASER

        The Purchaser represents and warrants that:

        SECTION 3.1. Authorization. The Purchaser has full power and authority
to enter into and to perform this Agreement in accordance with its terms. This
Agreement has been duly executed and delivered by the Purchaser and constitutes
a valid and legally binding obligation of the Purchaser.

        SECTION 3.2. Investment Representations. The Purchaser is acquiring the
Common Stock for the Purchaser's own account, for investment purposes and not
with a view to, or for sale in connection with, any distribution of such
securities or any part thereof in violation of federal or state securities laws.

        SECTION 3.3. Investment Experience; Access to Information. (a) The
Purchaser or a person acting in its capacity as "purchaser representative" (as
defined in Regulation D of the Securities Act) for the Purchaser, is an
"accredited investor" as that term is defined in Rule 501(a) promulgated under
the Securities Act, is a sophisticated investor; is able to fend for itself in
the transactions contemplated by this Agreement, has such knowledge and
experience in financial, business and investment matters as to be capable of
evaluating the merits and risks of this investment, has the ability to bear the
economic risks of this investment, has been furnished with or has had access to
such information as is specified in subparagraph (b)(2) of Rule 502 promulgated
under the Securities Act, was not organized or reorganized for the specific
purpose of acquiring the Common Stock purchased by it and has been afforded the
opportunity to ask questions of, and to receive answers from, the Company and to
obtain any additional information, to the extent the Company has or could have
acquired such information without unreasonable effort or expense, all as
necessary for the Purchaser or "purchaser representative" to make an informed
investment decision with respect to the purchase of the Common Stock. The
foregoing, however, does not limit or modify the representations and warranties
of the Company in Article 2 of this Agreement or the right of the Purchaser to
rely thereon.

        (b) In addition to the foregoing, the Purchaser acknowledges, represents
and warrants, as applicable, as set forth in Annex I hereto.

        SECTION 3.4. Absence of Registration. The Purchaser understands that the
Common Stock to be sold and issued hereunder may not be sold by the Purchaser
unless it is subsequently registered under the Securities Act, or an exemption
from such registration is available.

        SECTION 3.5. Restrictions on Transfer. The Purchaser agrees that (a) it
will not offer, sell, pledge, hypothecate, or otherwise dispose of the Common
Stock other than to its "affiliates" unless such offer, sale, pledge,
hypothecation or other disposition is (i) registered under the Securities Act,
or (ii) in compliance with an opinion of counsel to the Purchaser, delivered to
the Company and reasonably acceptable to it, to the effect that such offer,
sale, pledge, hypothecation or other disposition thereof does not violate the
Securities Act, and (b) the certificate(s) representing the Common Stock shall
bear a legend stating in substance:

                                       5
<PAGE>   9

        THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
        UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF
        ANY STATE AND MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED, PLEDGED
        OR HYPOTHECATED OTHER THAN TO AFFILIATES (AS DEFINED) OF THE REGISTERED
        HOLDER HEREOF UNLESS AND UNTIL REGISTERED UNDER SAID ACT OR, IN THE
        OPINION OF COUNSEL IN FORM AND SUBSTANCE SATISFACTORY TO THE ISSUER OF
        THESE SECURITIES, SUCH OFFER, SALE OR TRANSFER, PLEDGE OR HYPOTHECATION
        DOES NOT VIOLATE THE PROVISIONS THEREOF.

        For purposes of this Section 3.5, "affiliate" of any Purchaser means (i)
any entity more than 10% of the voting stock or other voting interest of which
is owned, directly or indirectly through one or more intermediaries, by the
Purchaser, (ii) any entity which owns, directly or indirectly through one or
more intermediaries, more than 10% of the voting stock of the Purchaser, (iii)
any entity of which 10% or more of the voting stock is owned by an affiliate of
the Purchaser, and (iv) with respect to a Purchaser that is a trust, a grantor
or beneficiary of such trust or other entity under the control of such grantor
or beneficiary. Upon request of a holder of Common Stock the Company shall
remove the legend set forth above from the certificates evidencing such Common
Stock or issue to such holder new certificates therefor free of such legend, if
with such request the Company shall have received an opinion of counsel selected
by the holder and reasonably satisfactory to the Company, in form and substance
reasonably satisfactory to the Company, to the effect that such Preferred or
Common Stock is not required by the Securities Act to continue to bear the
legend.

        SECTION 3.6. Transfer Instructions. The Purchaser agrees that the
Company may provide for appropriate transfer instructions to implement the
provisions of Section 3.5 hereof.

        SECTION 3.7. Economic Risk. The Purchaser understands that it must bear
the economic risk of the investment represented by the purchase of Common Stock
for an indefinite period.

        SECTION 3.8. Fees and Commissions. The Purchaser represents and warrants
that it has retained, or otherwise authorized to act, no Intermediary in
connection with the transactions contemplated by this Agreement and agrees to
indemnify and hold harmless the Company from liability for any compensation to
any Intermediary retained or otherwise authorized to act by, or on behalf of,
the Purchaser and the fees and expenses of defending against such liability or
alleged liability.

        SECTION 3.9. Purchaser's Board of Directors Designee. Promptly after the
initial Closing Date on October 8, 1999, the Company's Board of Directors shall
take the necessary steps to add a person designated by the Purchaser as a member
of the Company's Board of Directors. In connection therewith, the Purchaser's
designee shall resign from the Board of Directors immediately upon any failure
by the Purchaser to complete the acquisition of any Shares in accordance with
the provisions hereof including, but not limited to, Schedule 1.1.

                                       6
<PAGE>   10

        SECTION 3.10. Payment of Certain Expenses. The Purchaser agrees to pay
all of the fees and expenses of Gerbsman Partners incurred in connection with
the restructuring of the Company's debt up to $250,000.

        SECTION 3.11. Wafer Purchase Commitment. The Purchaser hereby agrees to
purchase wafers from the Company for the Company's third fiscal quarter 2000,
and in an amount not less than 25% of the Company's installed capacity for the
fourth fiscal quarter 2000 and the first and second fiscal quarters 2001. Such
wafer purchase commitment shall be for the price and upon the other terms and
conditions, set forth on Schedule 3.11 and in accordance with a wafer purchase
agreement to be negotiated in form and substance satisfactory to both parties.

                                    ARTICLE 4
                   CONDITIONS TO OBLIGATIONS OF THE PURCHASER

        SECTION 4.1. Conditions to Obligations of the Purchaser. The obligation
of the Purchaser on each of the Closing Dates to purchase the Common Stock under
this Agreement and in accordance with Schedule 1.1 shall be subject to each of
the following conditions precedent, any one or more of which may be waived by
the Purchaser:

        (a) Representations and Warranties. The representations and warranties
made by the Company herein shall be true and accurate in all material respects
on and as of each of the Closing Dates as if made on each of the Closing Dates
(unless otherwise provided below).

        (b) Performance. The Company shall have performed and complied with all
agreements and conditions contained herein or in other ancillary documents
incident to the transactions contemplated by this Agreement required to be
performed or complied with by it prior to or at each of the Closings in all
material respects.

        (c) Consents, etc. The Company shall have secured all permits, consents
and authorizations that shall be necessary or required lawfully to consummate
this Agreement, to issue the Common Stock to be purchased by the Purchaser.

        (d) Compliance Certificates. The Company shall have delivered to the
Purchaser or its representative at each of the Closings an Officer's Certificate
to the effect that, to such Officer's knowledge, all conditions specified in
Sections 4.1(a) through (c), inclusive, have been fulfilled.

        (e) Proceedings and Documents. All corporate and other proceedings in
connection with the transactions contemplated by this Agreement and all
documents and instruments incident to such transactions shall be reasonably
satisfactory in substance and form to the Purchaser and its counsel, and the
Purchaser and its counsel shall have received all such counterpart originals or
certified or other copies of such documents as the Purchaser or its counsel may
reasonably request.

        (f) Opinion of Company's Counsel. On the initial Closing Date, October
8, 1999, the Purchaser shall have received from Orrick, Herrington & Sutcliffe
LLP, counsel for the

                                       7
<PAGE>   11

Company, an opinion, dated the initial Closing Date and reasonably satisfactory
in form and substance to the Purchaser and its counsel, and in the form attached
hereto as Exhibit A.

                                    ARTICLE 5
                      CONDITIONS TO OBLIGATIONS OF COMPANY

        SECTION 5.1. Conditions to Obligations of the Company. The obligation of
the Company at each of the Closings to issue and sell the Common Stock to be
purchased under this Agreement shall be subject to the following conditions
precedent, which may be waived by the Company:

        (a) Representations and Warranties. The representations and warranties
made by the Purchaser herein shall be true and accurate in all material respects
on and as of each of the Closing Dates as if made on each of the Closing Dates
(unless otherwise provided below).

        (b) Performance. The Purchaser shall have performed and complied with
all agreements and conditions contained herein or in other ancillary documents
incident to the transactions contemplated by this Agreement required to be
performed or complied with by it prior to or at each of the Closings in all
material respects.

        (c) Compliance Certificates. The Purchaser shall have delivered to the
Company or its representative at each of the Closings an Officer's Certificate
to the effect that, to such Officer's knowledge, all conditions specified in
Sections 5.1(a) and (b) have been fulfilled.

                                    ARTICLE 6
                              AFFIRMATIVE COVENANTS

        SECTION 6.1. Use of Proceeds. The Company shall use the proceeds from
the sale of the Common Stock only as follows: (a) to make compensation payments
to its employees; (b) to pay lease obligations for leases in effect on the date
hereof; or (c) to pay other operating expenses approved by Purchaser.

        SECTION 6.2. Piggy-Back Registrations. If at any time the Company shall
determine to register for its own account or the account of others under the
Securities Act any of its equity securities, other than on Form S-8 or Form S-4
or their then equivalents (a "Piggy-Back Registration"), it shall send to the
Purchaser, written notice of such determination and, if within fifteen (15) days
after receipt of such notice, the Purchaser shall so request in writing, the
Company shall use its diligent efforts to include in such registration statement
all or any part of the Registrable Shares (as defined below) the Purchaser
requests to be registered, except that if, in connection with any offering
involving an underwriting of Common Stock to be issued by the Company, the
managing underwriter shall impose a limitation on the number of shares of Common
Stock which may be included in the registration statement because, in its
judgment, such limitation is necessary to effect an orderly public distribution,
then the Company shall be obligated to include in such registration statement
only such limited portion (or none, if so required by the managing underwriter)
of the Registrable Shares with respect to which such Holder has requested
inclusion hereunder. For the purposes of this Section, "Registrable Shares"
shall mean and include (i) shares of Common Stock held by the Purchaser; and
(ii) any shares of

                                       8
<PAGE>   12

Common Stock issued to (or issuable upon exercise of warrants issued to) any
bank or other lender, or equipment lessor in connection with the Company
obtaining a loan or equipment financing, if the Company expressly accords to
such shares the registration rights contained in this Agreement; provided,
however, that shares of Common Stock which are Registrable Shares shall cease to
be Registrable Shares upon the consummation of any sale of such shares pursuant
to a registration statement or Rule 144 under the Securities Act.

        SECTION 6.3. Officers of the Company. The Company shall use reasonable
efforts to hire executives for the officer positions in the Company that are
currently vacant and which positions are critical to the future success of the
Company and shall inform Purchaser of potential candidates identified by the
Company and shall give reasonable consideration to Purchaser's recommendation
and evaluation of potential candidates.

        SECTION 6.4. Right of First Offer.

        (a) Subject to this Section 6.4 and other than as disclosed in Section
2.1(b), if the Company shall decide to issue or sell, any (i) shares of Common
Stock, (ii) any other equity security of the Company, including without
limitation, shares of Preferred Stock, (iii) any debt security of the Company
which by its terms is convertible into or exchangeable for any equity security
of the Company, (iv) any security of the Company that is a combination of debt
and equity, or (v) any option, warrant or other right to subscribe for, purchase
or otherwise acquire any such equity security or any such debt security of the
Company, the Company shall, in each case, first offer to sell such securities
(the "Offered Securities") to the Purchaser (the "Preemptive Shareholder"), if
it holds at least 15% of the then outstanding capital stock of the Company as
follows: the Company shall offer to sell to the Preemptive Shareholder that
portion of the Offered Securities as the number of Common Shares which the
Preemptive Shareholder then holds or has the right to acquire bears to the sum
of the total number of issued and outstanding Common Shares and upon exercise of
warrants, options and rights outstanding, at a price and on such other terms as
shall have been specified by the Company in writing delivered to the Preemptive
Shareholder (the "Offer"), which Offer by its terms shall remain open for a
period of 14 days from the giving of the Offer.

        (b) Notice of the Preemptive Shareholder's intention to accept, in whole
or in part, any Offer made pursuant to clause (a) shall be evidenced by a
writing signed by the Preemptive Shareholder and delivered to the Company prior
to the end of the 14-day period of such Offer, setting forth the number of
shares or securities the Preemptive Shareholder elects to purchase (the "Notice
of Acceptance"). Failure of the Preemptive Shareholder to deliver a Notice of
Acceptance within said 14 days will be deemed to be a rejection of the Offer.

        (c) The Company shall have one hundred twenty (120) days from the end of
said 14-day period to sell any such Offered Securities as to which a Notice of
Acceptance has not been given (the "Refused Securities") to any Person or
Persons, substantially on the same terms and conditions as set forth in the
Offer.

        (d) The rights of the Preemptive Shareholder under this Section 6.4
shall terminate for all future issuances of Offered Securities if the Preemptive
Shareholder does not purchase all of the Offered Securities which it was
entitled to purchase in this Section 6.4.

                                       9
<PAGE>   13

        (e) The rights of the Preemptive Shareholder under this Section 6.4
shall not apply to:

               (i) Common Stock issued as a stock dividend to holders of Common
Stock or upon any subdivision or combination of shares of Common Stock;

               (ii) Preferred Stock issued as a dividend to holders of Preferred
Stock or upon any subdivision or combination of shares of Preferred Stock;

               (iii) Common Stock issued upon exercise of options, warrants and
rights outstanding as of the date of this Agreement;

               (iv) Common Stock and options of the Company issued after the
date hereof to directors, officers, employees or consultants of the Company and
any Subsidiary pursuant to any qualified or non-qualified stock option plan,
employee stock ownership plan, employee benefit plan, stock plan, or such other
options, arrangements, agreements or plans intended principally as a means of
providing compensation or incentive compensation for employment or services,
approved by the Board of Directors of the Company;

               (v) Options, warrants or shares issued to banks or other lenders
or equipment lessors in connection with the Company obtaining loans or equipment
financing or to customers, prospective customers, vendors or strategic partners;
or

               (vi) Securities issued in a merger or consolidation or as
consideration for the acquisition by the Company of any other corporation or
other business entity or of the assets and business thereof.

        (f) For convenience in administration, the Company may offer and sell
Securities covered by the right in clause (a) without first offering such
Securities to the Preemptive Shareholder, so long as the Preemptive Shareholder
is given the opportunity to purchase its pro rata amount within 45 days after
the close of the sale of Securities.

        (g) The rights of the Preemptive Shareholder set forth herein are
nonassignable except (i) to any or all of the beneficial owners of the
Preemptive Shareholder; (ii) an affiliate of the Preemptive Shareholder; and
(iii) to a purchaser who is not a competitor of the Company and who purchases
all of the Preemptive Shareholder's Securities of the Company. Any assignee
permitted under the preceding sentence shall assume the assignor's obligations
under this Agreement and become a party to this Agreement in a manner reasonably
satisfactory to the Company.

                                    ARTICLE 7
                                  MISCELLANEOUS

        SECTION 7.1. Survival of Agreements. All agreements, representations and
warranties contained herein or made in writing by or on behalf of the Company in
connection with the transactions contemplated hereby shall survive the execution
and delivery of this Agreement and any disposition of Common Stock issued upon
conversion thereof.

                                       10
<PAGE>   14

        SECTION 7.2. Notices. All notices, requests, consents and other
communications herein (except as stated in the last sentence of this Section
7.2) shall be in writing and shall be mailed by first-class certified mail,
postage prepaid and return receipt requested, personally delivered, faxed, or
sent by recognized overnight courier service, as follows:

        (a)    If to the Company:

               IMP, Inc.
               2830 North First Street
               San Jose, California U.S.A.  95143-2071
               Attention:  Chief Executive Officer
               Fax:  (408) 434-0335

               With a copy to

               Richard Grey, Esq.
               Orrick, Herrington & Sutcliffe LLP
               Old Federal Reserve Bank Building
               400 Sansome Street
               San Francisco, California  94111-3143
               Fax:  (415) 773-5759

        (b)    If to the Purchaser:

               Teamasia Semiconductors (India) Ltd.
               IDA, Patancheru
               Medak District
               Pin, 502 319, A.P. INDIA
               Attention:  Managing Director
               Fax:  (011) 91-8455-42070

               With a copy to:

               Robert T. Borawski, Inc.
               4125 Blackford Ave., Suite 140
               San Jose, California  95117
               Fax:  (408) 241-8895

or such other addresses as each of the parties hereto may provide from time to
time in writing to the other parties.

        SECTION 7.3. Modifications; Waiver. Neither this Agreement nor any
provision hereof may be changed, waived, discharged or terminated orally or in
writing, except that any provision of this Agreement may be amended and the
observance of any such provision may be waived (either generally or in a
particular instance and either retroactively or prospectively) with (but only
with) the written consent of the party to be charged.

                                       11
<PAGE>   15

        SECTION 7.4. Exculpation. The Purchaser acknowledges that it is not
relying upon any statements or instruments made or issued by any person, firm or
corporation, other than those contained in this Agreement in making its decision
to invest in the Company.

        SECTION 7.5. Entire Agreement. This Agreement, together with the
schedules and exhibits attached hereto and made a part hereof, contains the
entire agreement between the parties with respect to the transactions
contemplated hereby, and supersedes all negotiations, agreements,
representations, warranties and commitments, whether in writing or oral, prior
to or contemporaneous with the date hereof.

        SECTION 7.6. Successors and Assigns. Except as otherwise expressly
provided in this Agreement, all of the terms of this Agreement shall be binding
upon and inure to the benefit of and be enforceable by the respective successors
and assigns of the parties hereto.

        SECTION 7.7. Enforcement.

        (a) Remedies at Law or in Equity. If the Company shall default in any of
its obligations under this Agreement or if any representation or warranty made
by or on behalf of the Company in this Agreement or in any certificate, report
or other instrument delivered under or pursuant to any term hereof shall be
untrue or misleading in any material respect as of the date of this Agreement or
as of the Closings or as of the date it was made, furnished or delivered, the
Purchaser may proceed to protect and enforce its rights, including by way of
suit in equity or action at law. In the event the Purchaser brings such an
action against the Company, the prevailing party in such dispute shall be
entitled to recover from the losing party all fees, costs and expenses of
enforcing any right of such prevailing party under or with respect to this
Agreement, including without limitation such reasonable fees and expenses of
attorneys and accountants, which shall include, without limitation, all fees,
costs and expenses of appeals.

        (b) Remedies Cumulative; Waiver. No remedy referred to herein is
intended to be exclusive, but each shall be cumulative and in addition to any
other remedy referred to above or otherwise available to a party at law or in
equity. No express or implied waiver by Purchaser of any default shall be a
waiver of any future or subsequent default. The failure or delay of any party in
exercising any rights granted it hereunder shall not constitute a waiver of any
such right and any single or partial exercise of any particular right by a party
shall not exhaust the same or constitute a waiver of any other right provided
herein.

        SECTION 7.8. Execution and Counterparts. This Agreement may be executed
in any number of counterparts, each of which when so executed and delivered
shall be deemed an original, and all such counterparts together shall constitute
one instrument. Each party shall receive a duplicate original of the counterpart
copy or copies executed by it and by the Company.

        SECTION 7.9. Governing Law and Severability. (a) This agreement shall be
governed by the internal laws of the state of California, without regard to
principles of conflicts of law. Each of the parties hereto hereby submits to the
exclusive jurisdiction of the United States District Court in San Francisco,
California, for purposes of all legal proceedings arising out of or relating to
this Agreement or the transactions contemplated hereby. Each of the parties

                                       12
<PAGE>   16

hereto waives any objection which it may now or hereafter have to the laying of
the venue of any such proceeding brought in such a court and any claim that any
such proceeding brought in such a court has been brought in an inconvenient
forum.

        (b) In the event any provision of this agreement or the application of
any such provision to any party shall be held by a court of competent
jurisdiction to be contrary to law, the remaining provisions of this agreement
shall remain in full force and effect.

        SECTION 7.10. Headings. The descriptive headings of the Articles and
Sections hereof and the Schedules and Exhibits hereto are inserted for
convenience only and do not constitute a part of this Agreement.

        SECTION 7.11. Confidentiality. The Purchaser agrees that it will keep
confidential and will not disclose, or divulge any confidential, proprietary,
secret or non-public information which the Purchaser may obtain from the Company
and not use such information other than for the benefit of the Company or in
furtherance of the Purchaser's rights as a shareholder of the Company; provided,
that, no such information shall be deemed to be non-public if it (i) is or
becomes generally available to the public other than as a result of a disclosure
by the Purchaser or its respective agents, representatives or employees; (ii) is
or becomes available to the Purchaser on a non-confidential basis from a source
(other than the Company or one of its officers, directors, agents,
representatives or employees) that is not prohibited from disclosing such
information by a legal, contractual or fiduciary obligation; or (iii) was known
to the Purchaser on a non-confidential basis prior to its disclosure to it by
the Company and provided further that, any other term of this Agreement to the
contrary notwithstanding, the Company shall not be obligated to disclose any
information, the disclosure of which it believes in good faith would be
detrimental to the Company or its shareholders.

        SECTION 7.12.     No Solicitation.

        (a) Each of the Purchaser and the Company agrees that for a period of
two years from the last Closing Date, it shall not induce or encourage, directly
or indirectly, any current employee of the other party to leave such party's
employ, whether to accept a position with it or an entity related to it or
otherwise. The restrictions in the previous sentence shall not be deemed to be
violated by either party in the case of a general solicitation to hire,
including, without limitation, through the use of advertising or recruiting
(provided that a recruiter is not specifically instructed to solicit the other
party's employees). Each of the Purchaser and the Company hereby further agrees
that for a period of two years from the last Closing Date, it shall not take any
action which would interfere with the business of the other party, unless such
action is taken pursuant to the mutual agreement of both parties. The provisions
of this Section 7.12 shall survive the last Closing Date for a period of two
years.

        (b) Without limiting the right of either party to pursue all other legal
and equitable rights available to them for violation of this Section 7.12, it is
agreed that other remedies cannot fully compensate either party for such a
violation and that each party shall be entitled to injunctive relief to prevent
the violation or the continuing violation thereof. It is the intent and
understanding of each party hereto that if, in any action before any
Governmental Authority legally empowered to enforce this Section 7.12, any term,
restriction, covenant or promise in this

                                       13
<PAGE>   17

Section 7.12 is found to be unreasonable and for that reason unenforceable, then
such term, restriction, covenant or promise shall be deemed modified to the
extent necessary to make it enforceable by such Governmental Authority.

        (c) For the purposes of the Section, "Governmental Authority" shall mean
any federal, state, local or other governmental or administrative body,
instrumentality, department, agency or any court, tribunal, administrative
hearing, arbitration panel, commission or other similar dispute resolving panel
or body.

        SECTION 7.13. Termination. In the event that the Purchaser shall fail to
make any payment in full that it is obligated to make hereunder within three (3)
Business Days of the applicable Closing Date set forth on Schedule 1.1, this
Agreement shall terminate and the Company shall have no further obligation to
sell and issue Shares to the Purchaser in accordance with this Agreement.
Notwithstanding the foregoing, all provisions hereunder which the parties have
agreed to survive termination of this Agreement shall remain binding upon the
parties hereto. For the purpose of this Section, "Business Day" shall mean any
day other than Saturday, Sunday or a holiday in San Jose, California.

        SECTION 7.14. Indemnification.

        (a) The Company agrees to indemnify and hold harmless the Purchaser from
and against any and all liabilities, obligations, losses, out-of-pocket costs or
damages ("Loss") and reasonable attorneys' and accountants' fees and expenses,
court costs and all other reasonable out-of-pocket expenses ("Expense") incurred
by the Purchaser in connection with or arising from or attributable to any
breach by the Company, of any of its representations, warranties, obligations,
covenants or agreements contained in this Agreement; provided, however, that the
Purchaser shall not be entitled to indemnification for Losses or Expenses
pursuant to this Section unless and until the amount of Losses and Expenses
exceeds $100,000. Thereafter, the Company shall be liable for indemnification
for Losses and Expenses only to the extent the aggregate amount thereof exceeds
$100,000. Notwithstanding the foregoing, the terms "Loss" and "Expense" shall
not include incidental, consequential or punitive damages except in a third
party claim, action or suit.

        (b) If the Purchaser believes that it has suffered or incurred any Loss
or Expense pursuant to this Section, it shall so notify the Company promptly in
writing describing such Loss or Expense, the amount thereof, if known, and the
method of computation of such Loss or Expense. Promptly after receipt by the
Purchaser of notice of the commencement of any action by any third party, such
indemnified party shall, if a claim in respect thereof is to be made against the
Company under this Section notify the Company in writing of the commencement
thereof (but the failure so to notify the Company shall not relieve the Company
from any liability which it may have under this Section except to the extent
that it has been prejudiced in any material respect by such failure or from any
liability which it might otherwise have). Unless the Company is contesting a
third party claim, the Company shall promptly pay such claim or reimburse the
Purchaser if the Purchaser has made payment.

        (c) The Company shall have the right to conduct and control, through
counsel of its choosing, any third party claim, action or suit. The Company
shall permit the Purchaser to

                                       14
<PAGE>   18

participate in the defense of any such action or suit through counsel chosen by
it, provided that the fees and expenses of such counsel shall be borne by the
Purchaser. The Company may agree to any compromise or settlement with respect to
a claim for money damages without the consent of the Purchaser; provided, that
the Company shall not effect any compromise or settlement which will have a
continuing effect on the business of the Purchaser without the prior consent of
the Purchaser, which consent shall not be unreasonably withheld or delayed.

        SECTION 7.15. Purchaser's Future Investments in the Company. It is the
parties' intent that the Purchaser acquire not less than 51% of the fully
diluted Common Shares of the Company at a price equal to a total of $5,980,000
($5,980,000 - $2,050,000 (paid hereunder upon completion of purchase of 16.6%) =
$3,930,000 (paid upon completion of Purchaser's purchase of the remaining Common
Shares resulting in the Purchaser holding at least 51% of the fully diluted
Common Shares)) no later than February 28, 2000. To that end, the parties agree
that promptly upon the parties' execution of this Agreement, they will proceed
to negotiate, in good faith, the terms and conditions of a share purchase
agreement for the remaining Common Shares of the Company, which agreement will
result in the Purchaser owning and maintaining not less than 51% of the fully
diluted Common Shares. Further, the Company agrees to use its reasonable efforts
to obtain the necessary approvals from its shareholders and to obtain all
applicable Governmental Approvals in order to complete the Purchaser's purchase
of such Common Shares, as expeditiously as possible. The Purchaser agrees to
provide all reasonable assistance to the Company to obtain such approvals. Upon
the Purchaser acquiring not less than 51% of the fully diluted Common Shares,
the provisions of Section 7.12 shall no longer be obligations of either party.

                [The rest of this page left intentionally blank.]

                                       15
<PAGE>   19

        IN WITNESS WHEREOF, the parties hereto have executed this Agreement by
their duly authorized officers as of the date first above written.

                                            IMP, INC.

                                            By: /s/ ZVI GRINFAS
                                               ---------------------------------
                                               Name: ZVI GRINFAS
                                                     ---------------------------
                                               Title: PRESIDENT & CEO
                                                     ---------------------------

                                            TEAMASIA SEMICONDUCTORS (INDIA) LTD.

                                            By: /s/ SUBBA RAO PINAMANENI
                                               ---------------------------------
                                               Name: PINAMANENI SUBBA RAO
                                                     ---------------------------
                                               Title: MANAGING DIRECTOR
                                                     ---------------------------

                    STOCK PURCHASE AGREEMENT SIGNATURE PAGE

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