Document:

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EXHIBIT 10.1

                        METRO INFORMATION SERVICES, INC.
                          EMPLOYEE STOCK PURCHASE PLAN
                  AMENDED AND RESTATED THROUGH JANUARY 1, 2000

1. PURPOSE.

THE METRO INFORMATION SERVICES, INC. EMPLOYEE STOCK PURCHASE PLAN (THE "PLAN")
IS INTENDED TO PROVIDE CERTAIN EMPLOYEES ("PARTICIPANTS") OF METRO INFORMATION
SERVICES, INC. (THE "COMPANY") WITH AN OPPORTUNITY TO ACQUIRE A PROPRIETARY
INTEREST IN THE COMPANY THROUGH THEIR PARTICIPATION IN A PLAN DESIGNED TO
QUALIFY AS AN EMPLOYEE STOCK PURCHASE PLAN UNDER SECTION 423 OF THE INTERNAL
REVENUE CODE OF 1986 (THE "CODE").

2. ADMINISTRATION.

(a) COMMITTEE. This Plan shall be administered by a committee (the "Committee")
composed of at least two (2) members of the Board of Directors of the Company
(the "Board"). No person shall serve as a member of the Committee, or if a
member of the Committee, shall not participate in decisions concerning the
timing, pricing or amount of Stock to be made available for purchase hereunder,
unless such person is a disinterested person as described in Rule 16b-3
promulgated pursuant to Section 16(b) of the Securities Exchange Act of 1934, as
amended, or any successor rule ("Rule 16b-3"). This Plan is intended to meet the
requirements of Rule 16b-3 and shall be interpreted and administered so as to
comply with such rule. The Committee shall have full authority to administer
this Plan and to adopt such rules and regulations for administering this Plan as
it may deem necessary to comply with the requirements of Section 423 of the
Code. The Committee may delegate to an agent or agents any of its
responsibilities under this Plan except its responsibilities to: (1) establish
the number of shares available for purchase by employees during any purchase
period; (2) establish the maximum and minimum percentage of base compensation to
be paid by any single employee for the purchase of stock during any purchase
period and its authority and (3) construe and interpret the provisions of this
Plan.

(b) ACTIONS OF THE COMMITTEE. All actions taken and all interpretations and
determinations made by the Committee in good faith (including determinations of
fair market value) shall be final and binding on all Participants, the Company
and all other interested persons. No member of the Committee shall be personally
liable for any action, determination or interpretation made in good faith with
respect to this Plan and all members of the Committee shall, in addition to
their rights as directors, be fully protected by the Company with respect to any
such action, determination or interpretation.

3. PURCHASE PERIODS.

The first purchase period under this Plan shall commence on the effective date
of the Company's registration statement filed with the Securities and Exchange
Commission and shall terminate on March 31, 1997. Unless otherwise determined by
the Committee, a purchase period shall commence on the first day of each
succeeding calendar quarter and shall terminate on the last day of each such
quarter. The Committee may, from time to time, establish purchase periods with
differing commencement dates and durations. No two purchase periods shall run
concurrently.

4. ELIGIBILITY AND PARTICIPATION.

(a) Subject to Section 6(c)(iii), effective July 1, 1998, every employee of the
Company who, on the commencement date of the purchase period, has been employed
by the Company for at least three (3) months without a break in service of more
than thirty (30) calendar days is eligible to participate in this Plan during a
purchase period. Contingent workers, including temporary or leased employees and
independent contractors, are not eligible to participate in the Plan.

(b) An employee may become a Participant in this Plan for a particular purchase
period only by completing the enrollment forms prescribed by the Committee
(including a purchase agreement and a payroll deduction authorization)

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and filing such forms before the commencement of the purchase period with the
person designated by the Committee. No enrollment forms will be accepted from an
individual who is not on the active payroll of the Company on the filing date,
unless such individual is temporarily off the payroll by reason of illness,
vacation, jury duty or other employer-sponsored absence.

5. STOCK SUBJECT TO PLAN.

(a) COMMON STOCK. The stock that is purchasable by Participants shall be the
Company's authorized but unissued Common Stock, par value $.01 per share (the
"Common Stock"). To have sufficient shares available for sale under this Plan,
the Company may repurchase shares of Common Stock on the open market, issue
authorized but unissued stock or otherwise. The maximum number of shares that
may be sold to employees during any single purchase period shall be established
by the Committee before the beginning of the purchase period; provided, however,
that the total number of shares that may be sold to Participants throughout the
entire duration of this Plan shall not exceed 500,000 shares (subject to
adjustment under subparagraph (b) below).

(b) CHANGES IN CAPITAL STRUCTURE. If any change is made to the Common Stock
purchasable under this Plan (whether by reason of merger, consolidation,
reorganization, recapitalization, stock dividend in excess of twenty percent
(20%) at any single time, stock splits, combination of shares, exchange of
shares, changes in corporate structure or otherwise), then appropriate
adjustments shall be made to the maximum number of shares purchasable under this
Plan and the number of shares and price per share of stock subject to rights to
purchase stock outstanding under this Plan.

6. PURCHASE OF COMMON STOCK.

(a) RIGHT TO PURCHASE. An employee who becomes a Participant for a particular
purchase period shall have the right, as of the beginning of the purchase
period, to purchase Common Stock on the terms and conditions set forth in this
Plan and shall execute a purchase agreement embodying such terms and conditions
and such other provisions, not inconsistent with this Plan, as the Committee may
deem advisable.

(b) PURCHASE PRICE PER SHARE. Except as provided in Section 6(j), the purchase
price per share shall be eighty-five percent (85%) of the fair market value of a
share of Common Stock on the commencement date of the purchase period. The fair
market value of a share of Common Stock on any date shall be the closing sales
price, as quoted by the National Association of Securities Dealers through the
NASDAQ National Market System for the date in question, or, if the Common Stock
is listed on a national stock exchange, the officially-quoted closing sales
price on such exchange on the date in question. If the Common Stock is not
traded publicly, the fair market value of a share of Common Stock on any date
shall be determined, in good faith, by the Board or the Committee after
consultation with outside legal, accounting or other experts as the Board or the
Committee may deem advisable. If the Common Stock is not traded publicly, the
Board or the Committee shall maintain a written record of its method of
determining such value.

(c) TOTAL PURCHASE PRICE. Each Participant shall, for any purchase period, have
the right to purchase Common Stock with a total purchase price equal to a
designated percentage of his Compensation. A Participant's "Compensation" for a
particular purchase period shall be the amount of the Participant's (i) base
salary or wages or (ii) base salary or wages, plus overtime, bonuses and other
compensation, that is payable to the Participant at any time or from time to
time during the purchase period. Each Participant shall designate in his
purchase agreement the whole percentage of the Participant's Compensation the
Participant wishes to use to pay for the purchase of Common Stock for the
particular purchase period, subject to the provisions set forth below which
shall be uniformly applied to all Participants in a particular purchase period:

(i) The maximum percentage of a Participant's Compensation that may be used to
pay for the Common Stock in a particular purchase period shall be five percent
(5%); provided, however, that the Committee shall establish before the beginning
of the purchase period a maximum number of shares (subject to adjustment under
Section 6(b)) that may be purchased during the purchase period by each
Participant.

(ii) The minimum percentage of a Participant's Compensation that may be used to
pay for the purchase of Common Stock in a particular period shall be one percent
(1%).

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(iii) No right to purchase shares under this Plan shall be granted to an
employee if such employee would, immediately after the grant, own stock
possessing five percent (5%) or more of the total combined voting power or value
of all classes of stock of the Company. An employee's stock ownership shall be
determined under Section 424(d) of the Code and stock that an employee may
purchase under any outstanding options shall be treated as stock owned by the
employee.

Notwithstanding the provisions of paragraphs (i) and (ii) above, the Committee
may, in its discretion, establish any other maximum and minimum percentages of
Compensation to be used to pay for Common Stock under this Plan.

(d) ALLOCATION OF AVAILABLE SHARES. If the total number of shares of Common
Stock that may be purchased under the purchase agreements of all Participants
for a particular purchase period exceeds the number of shares available for sale
under this Plan, then the Committee shall make a pro rata allocation of the
available shares and shall notify each Participant of such allocation.

(e) PAYMENT. Payment of the purchase price for Common Stock under this Plan
shall be effected by means of payroll deductions, which shall begin with the
first pay period, the payment date for which occurs coincident with or
immediately following the commencement date of the relevant purchase period and
shall terminate with the last pay period, the payment date for which occurs on
or before the last day of the purchase period. Each payroll deduction shall be
an amount equal to the percentage of the Compensation included in that payroll
payment that was designated by the Participant in his purchase agreement
(subject to reduction as provided in Section 6(g)).

(f) TERMINATION OF RIGHT TO PURCHASE. A Participant may, at any time before the
last day of the purchase period, terminate his right to purchase stock under
this Plan by filing the prescribed notification form with the Committee or its
delegate. Any amounts deducted from the Participant's pay or otherwise collected
from him by reason of his participation in this Plan for such purchase period
shall be refunded and no further amounts will be collected from the Participant
(by payroll deduction or otherwise) during the remainder of the purchase period.
A Participant's termination of his right to purchase shall be irrevocable with
respect to the purchase period to which it pertains.

(g) REDUCTION OF COMPENSATION PERCENTAGE. A Participant may, once and only once
during a purchase period, other than after his termination of employment with
the Company, reduce the percentage of his Compensation to be paid for shares of
Common Stock under the purchase agreement to a lesser whole percentage by giving
written notice to the Committee.

(h) TERMINATION OF EMPLOYMENT. If a Participant ceases to be an employee of the
Company for any reason (including, without limitation, death or retirement)
during a purchase period, the Participant or his personal representative will
receive a cash refund of all sums previously collected from the Participant
during the purchase period.

(i) EXERCISE. Each right to purchase stock under this Plan, other than a right
to purchase Common Stock that has been accelerated under this Plan or that has
previously terminated under this Plan, shall be exercised automatically on the
last day of the purchase period. Promptly after the date of exercise, the
Participant or the Participant's nominee, shall be issued a stock certificate
for the number of whole and fractional shares for which the Participant's right
to purchase has been exercised. Not more than one certificate shall be issued
pursuant to the exercise of any right to purchase Common Stock under this Plan.
Any excess of amounts collected during the purchase period, plus any beginning
balance over the purchase price of the issued shares, shall be, at the sole
option of the Company, promptly refunded or left on deposit for the ensuing
quarterly period, and, in any case, refunded after termination.

(j) REDUCTION OF PURCHASE PRICE. If the fair market value of a share of Common
Stock on the last day of the purchase period is less than the fair market value
of such share on the commencement date of the purchase period, then the purchase
price per share under this Plan on the last day of the purchase period shall be
reduced to eighty-five percent (85%) of the fair market value of such share on
the last day of the purchase period. Each right to purchase stock under this
Plan not previously exercised or terminated shall be automatically exercised on
the last day of the purchase period for the number of whole and fractional
shares obtained by dividing the sum on deposit from the Participant (and not
refunded) by the purchase price per share determined under this Section 6(j),
but in no event shall any right to purchase

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stock under this Plan be exercised for more than the specified number of shares,
if any, (subject to adjustment under Section 5(b)) established by the Committee
pursuant to Section 6(c)(i) before the beginning of the purchase period, and the
balance shall be, at the sole option of the Company, promptly refunded or left
on deposit for the ensuing quarterly period.

(k) RIGHTS AS STOCKHOLDER. A Participant shall have no rights as a stockholder
with respect to shares subject to a right to purchase Common Stock granted under
this Plan until such right to purchase is exercised and a share certificate is
delivered to the Participant. No adjustments shall be made for dividends,
distributions or other rights for which the record date is before the date of
exercise.

(l) ASSIGNABILITY. No right to purchase Common Stock granted under this Plan
shall be assignable or transferable by a Participant other than by will or by
the laws of descent and distribution, and, during the lifetime of the
Participant, such rights to purchase Common Stock shall be exercisable only by
the Participant.

(m) ACCRUAL LIMITATIONS. No Participant shall be entitled to accrue rights to
purchase Common Stock under this Plan that, when aggregated with purchase rights
accruable by him under other qualified employee stock purchase plans (within the
meaning of Section 423 of the Code) of the Company, would permit such
Participant to purchase more than $25,000 worth of Common Stock (determined on
the basis of the fair market value of such Common Stock on the date the
Participant accrues purchase rights under the Plan) for each calendar year such
purchase rights are at any time outstanding.

(n) MERGER OR LIQUIDATION OF THE COMPANY. If the Company or its shareholders
enter into an agreement to dispose of all or substantially all of the assets of
the Company or to dispose of greater than fifty percent (50%) of the outstanding
capital stock of the Company by means of sale, merger, reorganization or
liquidation, each Participant shall be entitled to receive, as nearly as
reasonably may be determined, the cash, securities or property (or any
combination thereof) that a holder of one share of the Common Stock was entitled
to receive at the time of such transaction. The Board or the Committee shall
take such steps in connection with such transactions as the Board or the
Committee shall deem necessary to assure that the provisions of this Section
shall thereafter be applicable, as nearly as reasonably may be determined, to
the said cash, securities or property (or any combination thereof) as to which
such Participant might thereafter be entitled to receive.

(o) NO INTEREST. No interest shall be paid on any monies refunded to
Participants pursuant to the provisions of this Plan.

(p) WITHHOLDING. The Company may withhold any taxes required by any law or
regulation of any governmental authority, whether federal, state or local, in
connection with the purchase of Common Stock under this Plan or the sale of such
stock that is not held for at least two (2) years after the beginning of the
purchase period during which the Common Stock was purchased. Such withholding
may include all or any portion of any payment or other compensation payable to
the Participant, unless the Participant reimburses the Company for such amount.

7. AMENDMENT.

THE BOARD MAY FROM TIME TO TIME ALTER, AMEND, SUSPEND OR DISCONTINUE THIS PLAN;
PROVIDED, HOWEVER, THAT NO SUCH ACTION SHALL ADVERSELY AFFECT RIGHTS AND
OBLIGATIONS WITH RESPECT TO RIGHTS TO PURCHASE STOCK AT THE TIME OUTSTANDING
UNDER THIS PLAN AND PROVIDED, FURTHER, THAT NO SUCH ACTION OF THE BOARD MAY,
WITHOUT THE APPROVAL OF THE SHAREHOLDERS OF THE COMPANY, INCREASE THE NUMBER OF
SHARES SUBJECT TO THIS PLAN OR THE MAXIMUM NUMBER OF SHARES FOR WHICH A RIGHT TO
PURCHASE COMMON STOCK UNDER THIS PLAN MAY BE EXERCISED (UNLESS NECESSARY TO
EFFECT THE ADJUSTMENTS REQUIRED BY SECTION 5(B)), EXTEND THE TERM OF THIS PLAN,
ALTER THE PER SHARE PURCHASE PRICE FORMULA SO AS TO REDUCE THE PURCHASE PRICE
PER SHARE SPECIFIED IN THIS PLAN, OTHERWISE MATERIALLY INCREASE THE BENEFITS
ACCRUING TO PARTICIPANTS UNDER THE PLAN OR MATERIALLY MODIFY THE REQUIREMENTS
FOR ELIGIBILITY TO PARTICIPATE IN THIS PLAN. FURTHERMORE, THE PLAN MAY NOT,
WITHOUT THE APPROVAL OF THE SHAREHOLDERS OF THE COMPANY, BE AMENDED IN ANY
MANNER THAT WILL CAUSE THIS PLAN TO FAIL TO MEET THE REQUIREMENTS OF AN
"EMPLOYEE STOCK PURCHASE PLAN" UNDER SECTION 423 OF THE CODE.

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8. EFFECTIVE DATE

This Plan, as amended and restated, supersedes all prior versions of this Plan.
Amendments to Section 4.a of this Plan have been approved by the Board pursuant
to its authority under Section 7 and shall become effective as of January 1,
2000.

Date: As amended through January 1, 2000

                                            METRO INFORMATION SERVICES, INC.

                                               By:  /s/ JOHN H. FAIN
                                                  ----------------------------
                                                    John H. Fain, President

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                                                                    Exhibit 4.2

                   THIRD AMENDED AND RESTATED INVESTOR RIGHTS
                                   AGREEMENT

     This Third Amended and Restated Investor Rights Agreement (superseding the
Second Amended and Restated Registration Rights Agreement) (the "Agreement") is
made as of this 27th, day of September, 1997 by and among Monolithic System
Technology, Inc., a California corporation (the "Company"), and the purchasers
of its Preferred Stock and other equity securities ("Purchasers") listed on
SCHEDULE 1 attached hereto.

                             I. REGISTRATION RIGHTS

     1. CERTAIN DEFINITIONS. As used in this Agreement, the following terms
shall have the following respective meanings:

        "COMMISSION" shall mean the Securities and Exchange Commission or any
successor agency.

        "HOLDER" shall mean each Purchaser, and each future purchaser of any
series of Preferred or of any other equity security of the Company and to whom
the Company intends to grant the registration rights set forth herein, the
Company, and any transferee of Registrable Securities who, pursuant to Section
15 below, is entitled to registration rights hereunder.

        "PREFERRED" shall mean any series of Preferred Stock of the Company.

        "RESTRICTED SECURITIES" shall mean the securities of the Company
required to bear the legend set forth in Section 3 hereof (or any similar
legend).

        "REGISTRABLE SECURITIES" shall mean (i) shares of the Company's Common
Stock issued or issuable upon the conversion of the Preferred; (ii) any Common
Stock of the Company or other securities issued or issuable in respect of shares
of the Preferred including upon exercise or conversion of any warrants or other
rights to acquired Common Stock or Preferred in connection with the sale of any
series of Preferred; and (iii) shares of the Company's Common Stock or other
securities issued or issuable upon any conversion of the Preferred upon any
stock split, stock dividend, recapitalization, or similar event; PROVIDED,
HOWEVER, that any shares described in clauses (i)-(iii) above which have been
resold to the public shall cease to be Registrable Securities upon such resale.

        The terms "REGISTER," "REGISTERED," and "REGISTRATION" refer to a
registration effected by preparing and filing a registration statement in
compliance with the Securities Act, and the declaration or ordering of the
effectiveness of such registration statement.

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        "REGISTRATION EXPENSES" shall mean all expenses incurred by the Company
in complying with Sections 5, 6 and 7 hereof, including, without limitation, all
registration, qualification and filing fees, printing expenses, escrow fees,
fees and disbursements of counsel for the Company, blue sky fees and expenses,
and the expense of any special audits incident to or required by any such
registration but excluding all Selling Expenses.

        "SECURITIES ACT" shall mean the Securities Act of 1933, as amended.

        "SELLING EXPENSES" shall mean all underwriting discounts, selling
commissions and stock transfer taxes applicable to the securities registered by
the Holders and any fees of counsel to any Holder.

     2. RESTRICTIONS ON TRANSFERABILITY. The Restricted Securities shall not be
transferable except upon the conditions specified in this Agreement, which
conditions are intended to ensure compliance with the provisions of the
Securities Act. Each holder of Restricted Securities will cause any proposed
transferee of the Restricted Securities held by such holder to agree to take and
hold such Restricted Securities subject to the provisions and upon the
conditions specified in this Agreement.

     3. RESTRICTIVE LEGEND. Each certificate representing (i) the Preferred,
(ii) shares of the Company's Common Stock issued upon conversion of the
Preferred, and (iii) any other securities issued in respect of the Preferred
including upon exercise or conversion of any warrants or other rights to acquire
Common Stock or Preferred in connection with the sale of any series of Preferred
or Common Stock issued upon conversion of the Preferred upon any stock split,
stock dividend, recapitalization, merger, consolidation or similar event shall
(unless otherwise permitted by the provisions of Section 4 below) be stamped or
otherwise imprinted with a legend in the following form (in addition to any
legend required under applicable state securities laws):

          THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR
          INVESTMENT AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
          1933. THESE SHARES MAY NOT BE SOLD OR TRANSFERRED IN THE ABSENCE OF
          SUCH REGISTRATION OR AN EXEMPTION THEREFROM UNDER SAID ACT. COPIES OF
          THE AGREEMENT COVERING THE PURCHASE OF THESE SHARES AND RESTRICTING
          THEIR TRANSFER MAY BE OBTAINED AT NO COST BY WRITTEN REQUEST MADE BY
          THE HOLDER OF RECORD OF THIS CERTIFICATE TO THE SECRETARY OF THE
          CORPORATION AT THE PRINCIPAL EXECUTIVE OFFICES OF THE CORPORATION.

     4. NOTICE OF PROPOSED TRANSFERS. The holder of each certificate
representing Restricted Securities by acceptance thereof agrees to comply in all
respects with the provisions of this Section 4. Prior to any proposed transfer
of any Restricted Securities, unless there is in effect a registration statement
under the Securities Act covering the proposed transfer, the holder thereof
shall give written notice to the Company of such Holder's intention to effect
such transfer. Each such notice shall describe the manner and circumstances of
the proposed transfer in sufficient detail, and shall, if the Company so
requests, be accompanied by either (i) an unqualified written opinion of legal
counsel who shall be reasonably satisfactory to the Company, addressed to the
Company and

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reasonably satisfactory in form and substance to the Company's counsel, to the
effect that the proposed transfer of the Restricted Securities may be effected
without registration under the Securities Act, or (ii) a "No Action" letter from
the Commission to the effect that the transfer of such securities without
registration will not result in a recommendation by the staff of the Commission
that action be taken with respect thereto, whereupon the holder of such
Restricted Securities shall be entitled to transfer such Restricted Securities
in accordance with the terms of the notice delivered by the holder to the
Company; PROVIDED, HOWEVER, that no opinion or No Action letter need be obtained
with respect to a transfer to (A) a partner, active or retired, of a holder of
Restricted Securities, (B) the estate of any such partner, or (C) the spouse,
children, grandchildren or spouse of such children or grandchildren of any
holder or to trusts for the benefit of any holder or such persons, provided that
in such cases the transferee agrees in writing to be subject to the terms
hereof. Each certificate evidencing the Restricted Securities transferred as
above provided shall bear the appropriate restrictive legend set forth in
Section 3 above, except that such certificate shall not bear such restrictive
legend if the opinion of counsel for the Company such legend is not required in
order to establish compliance with any provisions of the Securities Act.

     5. REQUESTED REGISTRATION.

        (a) REQUEST FOR REGISTRATION. If at any time after six months following
the completion date of the initial registered public offering of the Company's
capital stock (the "IPO Date"), the Company shall receive from any Holder or
group of Holders of Registrable Securities a written request that the Company
effect any registration, qualification or compliance with respect to all or a
part of the Registrable Securities, the anticipated gross offering price of
which would exceed $2,000,000, the Company will:

           (x) promptly give written notice of the proposed registration,
qualification or compliance to all other Holders; and

           (y) as soon as practicable, use its best efforts to effect such
registration, qualification or compliance (including, without limitation, the
execution of an undertaking to file post-effective amendments, appropriate
qualification under applicable blue sky or other state securities laws and
appropriate compliance with applicable regulations issued under the Securities
Act and any other governmental requirements or regulations) as may be so
requested and as would permit or facilitate the sale and distribution of all or
such portion of such Registrable Securities as are specified in such request,
together with all or such portion of the Registrable Securities of any Holder or
Holders joining in such request as are specified in a written request received
by the Company within 15 days after receipt of such written notice from the
Company;

     PROVIDED, HOWEVER, that the Company shall not be obligated to take any
action to effect any such registration, qualification or compliance pursuant to
this Section 5:

           (i) In any particular jurisdiction in which the Company would be
required to execute a general consent to service of process in effecting such
registration, qualification or compliance unless the Company is already subject
to service in such jurisdiction and except as may be required by the Securities
Act;

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           (ii) After the Company has effected two (2) such registrations
pursuant to this Section 5(a), such registrations have been declared or ordered
effective and the securities offered pursuant to such registration have been
sold.

     Subject to the foregoing clauses (i) and (ii), the Company shall file a
registration statement covering the Registrable Securities so requested to be
registered as soon as practicable after receipt of the request or requests of
any Holder or Holders. If, however, the Company shall furnish to the Holder or
Holders requesting a registration statement pursuant to this Section 5 a
certificate signed by the President of the Company stating that, in the good
faith judgment of the Board of Directors of the Company, it would be seriously
detrimental to the Company and its shareholders for such registration statement
to be filed and it is therefore essential to defer the filing of such
registration statement, the Company shall have the right to defer such filing
for a period of not more than 120 days after receipt of the request of the
Holder or Holders requesting such registration; provided, however, that the
Company may not utilize this right more than once in any twelve-month period.

     (b) UNDERWRITING. If the Holders intend to distribute the Registrable
Securities covered by their request by means of an underwriting, they shall
so advise the Company as a part of their request made pursuant to Section
5(a) and the Company shall include such information in the written notice
referred to in Section 5(a)(x). The right of any Holder to registration
pursuant to Section 5 shall be conditioned upon such Holder's participation
in such underwriting and the inclusion of such Holder's Registrable
Securities in the underwriting to the extent provided herein.

     The Company shall (together with all Holders proposing to distribute their
securities through such underwriting) enter into an underwriting agreement in
customary form with the managing underwriter selected for such underwriting by a
majority in interest of the Holders. Notwithstanding any other provision of this
Section 5, if the managing underwriter advises the Holders in writing that in
its view marketing factors require a limitation of the number of shares to be
underwritten, then, subject to the provisions of Section 5(a), the Company shall
so advise all Holders and the number of shares of Registrable Securities (if
any) that may be included in the registration and underwriting shall be
allocated among all Holders requesting inclusion in the registration in
proportion, as nearly as practicable, to the respective amounts of Registrable
Securities originally requested by such Holders to be included in the
registration statement. No Registrable Securities excluded from the underwriting
by reason of the managing underwriter's marketing limitation shall be included
in such registration.

     If any Holder of Registrable Securities disapproves of the terms of the
underwriting, such person may elect to withdraw therefrom by written notice to
the Company, the managing underwriter and the other Holders. The Registrable
Securities and/or other securities so withdrawn shall also be withdrawn from
registration; provided, however, that if by the withdrawal of such Registrable
Securities a greater number of Registrable Securities held by other Holders may
be included in such registration (up to the maximum of any limitation imposed by
the underwriters), then the Company shall offer to all Holders who have included
Registrable Securities in the registration the right to include additional
Registrable Securities in the same proportion used in determining the
underwriter limitation in this Section 5(b). If the registration does not become
effective due to the withdrawal of Registrable Securities, then either (1) the
Holders requesting

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registration shall reimburse the Company for expenses incurred in complying
with the request or (2) the aborted registration shall be treated as effected
for purposes of Section 5(a)(B).

     6. COMPANY REGISTRATION.

        (a) NOTICE OF REGISTRATION. If the Company shall determine to register
any of its equity securities, either for its own account or the account of a
security holder or holders exercising their respective demand registration
rights, other than (i) the Company's initial public offering, (ii) a
registration relating solely to employee benefit plans or (iii) a registration
relating solely to a Commission Rule 145 transaction, the Company will:

           (i) promptly give to each Holder written notice thereof, and

           (ii) include in such registration (and any related qualification
under blue sky laws or other compliance), and in any underwriting involved
therein, all the Registrable Securities specified in a written request or
requests, made within 15 days after receipt of such written notice from the
Company, by any Holder or Holders, provided that the Company may limit, to the
extent so advised by the underwriters, the amount of Registrable Securities (if
any) to be included in the registration by the Holders.

        (b) ALLOCATION. In all registered public offerings, whether underwritten
or not, the amount of Registrable Securities of Holders which are included in
such registration, in accordance with the limitation set forth in Section
6(a)(ii) above, shall be allocated among all Holders requesting inclusion in the
registration in proportion, as nearly as practicable, to the respective amounts
of Registrable Securities originally requested by such Holders to be included in
the registration statement.

     7. REGISTRATION ON FORM S-3. The Company shall use its best efforts to
qualify for registration on Form S-3, and to that end, the Company shall comply
with the reporting requirements of the Securities Exchange Act of 1934, as
amended (the "Exchange Act"). After the Company has qualified for the use of
Form S-3, each holder of Registrable Securities shall have the right to request
an unlimited number of registrations on Form S-3 (such requests shall be in
writing and shall state the number of shares of Registrable Securities to be
disposed of and the intended method of disposition of such shares by each such
holder), subject only to the following limitations:

           (i) The Company shall not be obligated to cause a registration on
Form S-3 to become effective prior to one hundred eighty (180) days following
the effective date of a Company-initiated registration (other than a
registration effected solely to qualify an employee benefit plan or to effect a
business combination pursuant to Rule 145);

           (ii) The Company shall not be obligated to cause a registration on
Form S-3 to become effective prior to expiration of one hundred eighty (180)
days following the effective date of the most recent registration pursuant to a
request by a holder of Registrable Securities under Section 5 of this Agreement
or pursuant to a request by a holder of registration rights under any other
agreement of the Company granting Form S-3 demand registration rights;

           (iii) The Company shall not be required to effect a registration
pursuant to this Section 7, unless the Holder or Holders requesting registration
propose to dispose of shares of

                                       5

<PAGE>

Registrable Securities having an aggregate disposition price (before deduction
of underwriting discounts and expenses of sale) of at least $1,000,000;

           (iv) The Company shall not be required to effect more than three (3)
registrations pursuant to this Section 7, where each such registration has been
declared or ordered effective and the securities offered pursuant to such
registration have been sold; and

           (v) The Company shall not be required to maintain and keep any such
registration on Form S-3 effective for a period exceeding ten (10) days from the
effective date thereof. The Company shall give notice to all Holders and all
holders of registration rights under any other agreement of the Company granting
Form S-3 or similar demand registration rights of the receipt of a request for
registration pursuant to this Section 7 and shall provide a reasonable
opportunity for all such other Holders, including holders of registration rights
under any other agreement of the Company granting Form S-3 or similar demand
registration rights, to participate in the registration. Subject to the
foregoing, the Company will use its best efforts to effect promptly the
registration of all shares of Registrable Securities on Form S-3 to the extent
requested by the Holder or Holders thereof for purposes of disposition. In the
event the Underwriter determines that market factors require a limitation on the
number of shares to be underwritten, then shares shall be excluded from such
registration and underwriting pursuant to the method described in Section 5(b).

     8. EXPENSES OF REGISTRATION. All Registration Expenses incurred in
connection with any registration, qualification or compliance pursuant to
Section 5 or Section 6 shall be borne by the Company, and all Registration
Expenses incurred in connection with any registration, qualification or
compliance pursuant to Section 7 shall be borne by the Holders of the securities
included in the registration on Form S-3, pro rata on the basis of the number of
shares so registered. All Selling Expenses relating to securities registered by
the Holders shall be borne by the Holders of such securities pro rata on the
basis of the number of shares so registered.

     9. REGISTRATION PROCEDURES. In the case of each registration, qualification
or compliance effected by the Company pursuant to this Agreement the Company
will keep each Holder advised in writing as to the initiation of each
registration, qualification and compliance and as to the completion thereof. At
its expense the Company will furnish such number of prospectuses and other
documents incident thereto as a Holder from time to time may reasonably request.

     10. TERMINATION OF REGISTRATION RIGHTS. The registration rights granted
pursuant to this Agreement shall terminate as to any Holder, at such time after
the Company's initial public offering as the Registrable Securities held by such
Holder may be sold within any three (3) month period pursuant to Rule 144.

     11. LOCKUP AGREEMENT. In consideration for the Company agreeing to its
obligations under this Agreement each Holder of Registrable Securities and each
transferee pursuant to Section 15 hereof agrees (but only if each officer and
director of the Company also agrees), in connection with the first registration
of the Company's securities, upon request of the Company or the underwriters
managing any underwritten offering of the Company's securities, not to sell,
make any short sale of, loan, grant any option for the purchase of, or otherwise
dispose of any Registrable Securities (other than those included in the
registration) without the prior written consent of the Company or such
underwriters, as the case may be, for such period of time (not to exceed 180
days)

                                       6

<PAGE>

from the effective date of such registration as the Company or the underwriters
may specify. Each Holder agrees that the Company may instruct its transfer agent
to place stop-transfer notations in its records to enforce the provisions of
this Section 11.

     12. INDEMNIFICATION.

        (a) The Company will indemnify each Holder, each of its officers,
directors and partners and such Holder's legal counsel and independent
accountants, and each person controlling such Holder within the meaning of
Section 15 of the Securities Act, with respect to which registration,
qualification or compliance has been effected pursuant to this Agreement, and
each underwriter, if any, and each person who controls any underwriter within
the meaning of Section 15 of the Securities Act, against all expenses, claims,
losses, damages and liabilities (or actions in respect thereof), including any
of the foregoing incurred in settlement of any litigation, commenced or
threatened, arising out of or based on any untrue statement (or alleged untrue
statement) of a material fact contained in any registration statement,
prospectus, offering circular or other document, or any amendment or supplement
thereto, incident to any such registration, qualification or compliance, or
based on any omission (or alleged omission) to state therein a material fact
required to be stated therein or necessary to make the statements therein, in
light of the circumstances in which they were made, not misleading, or any
violation by the Company of any rule or regulation promulgated under the
Securities Act applicable to the Company and relating to action or inaction
required of the Company in connection with any such registration, qualification
or compliance, and will reimburse each such Holder, each of its officers,
directors and partners and such Holder's legal counsel and independent
accountants, and each person controlling such Holder, each such underwriter and
each person who controls any such underwriter, for any legal and any other
expenses reasonably incurred in connection with investigating, preparing or
defending any such claim, loss, damage, liability or action; provided, however,
that the Company will not be liable in any such case to the extent that any such
claim, loss, damage, liability or expense arises out of or is based on any
untrue statement or omission or alleged untrue statement or omission, made in
reliance upon and in conformity with written information furnished to the
Company by an instrument duly executed by such Holder or underwriter and stated
to be specifically for use therein, and provided further, that the foregoing
indemnity agreement is subject to the condition that, insofar as it relates to
any such untrue statement, alleged untrue statement, omission, or alleged
omission made in a preliminary prospectus but eliminated or remedied in the
amended prospectus on file with the Commission at the time the registration
statement becomes effective, or in the amended prospectus filed with the
Commission pursuant to Rule 424(b) (the "Final Prospectus"), such indemnity
agreement shall not inure to the benefit of any underwriter, or any Holder (if
there is no underwriter) or any party otherwise entitled to indemnification
hereunder, if a copy of the Final Prospectus was not furnished to the person or
entity asserting the loss, liability, claim, or damage at or prior to the time
such action is required by the Securities Act.

        (b) Each Holder will, if Registrable Securities held by such Holder are
included in the securities as to which such registration, qualification or
compliance is being effected, indemnify the Company, each of its directors and
officers and its legal counsel and independent accountants, each underwriter, if
any, of the Company's securities covered by such a registration statement, each
person who controls the Company or such underwriter within the meaning of
Section 15 of the Securities Act, and each other such Holder, each of its
officers and directors and each person controlling such Holder within the
meaning of Section 15 of the Securities Act, against

                                       7
<PAGE>

all claims, losses, damages and liabilities (or actions in respect thereof)
arising out of or based on any untrue statement (or alleged untrue statement) of
a material fact contained in any such registration statement, prospectus,
offering circular or other document, or any omission (or alleged omission) to
state therein a material fact required to be stated therein or necessary to make
the statements therein not misleading, and will reimburse the Company, such
Holders, such directors, officers, legal counsel, independent accountants,
underwriters or control persons for any legal or any other expenses reasonably
incurred in connection with investigating or defending any such claim, loss,
damage, liability or action, in each case to the extent, but only to the extent,
that such untrue statement (or alleged untrue statement) or omission (or alleged
omission) is made in such registration statement, prospectus, offering circular
or other document in reliance upon and in conformity with written information
furnished to the Company by an instrument duly executed by such Holder and
stated to be specifically for use therein; provided, however, that the
obligations of such Holders hereunder shall be limited to an amount equal to the
gross proceeds before expenses and commissions to each such Holder of
Registrable Securities sold as contemplated herein.

        (c) Each party entitled to indemnification under this Section 12 (the
"Indemnified Party") shall give notice to the party required to provide
indemnification (the "Indemnifying Party") promptly after such Indemnified Party
has actual knowledge of any claim as to which indemnity may be sought, and shall
permit the Indemnifying Party to assume the defense of any such claim or any
litigation resulting therefrom, provided that counsel for the Indemnifying
Party, who shall conduct the defense of such claim or litigation, shall be
approved by the Indemnified Party (whose approval shall not be unreasonably
withheld), and the Indemnified Party may participate in such defense at such
party's expense, and provided further that the failure of any Indemnified Party
to give notice as provided herein shall not relieve the Indemnifying Party of
its obligations under this Agreement, except to the extent, but only to the
extent, that the Indemnifying Party's ability to defend against such claim or
litigation is impaired as a result of such failure to give notice. No
Indemnifying Party, in the defense of any such claim or litigation, shall,
except with the consent of each Indemnified Party, consent to entry of any
judgment or enter into any settlement which does not include as an unconditional
term thereof the giving by the claimant or plaintiff to such Indemnified Party
of a release from all liability in respect to such claim or litigation.

     13. INFORMATION BY HOLDER. The Holder or Holders of Registrable Securities
included in any registration shall furnish to the Company such information
regarding such Holder or Holders and the distribution proposed by such Holder or
Holders as the Company may request in writing and as shall be required in
connection with any registration, qualification or compliance referred to in
this Agreement.

     14. RULE 144 REPORTING. With a view to making available the benefits of
certain rules and regulations of the Commission which may at any time permit the
sale of the Restricted Securities to the public without registration, after such
time as a public market exists for the Common Stock of the Company, the Company
agrees to:

        (a) Make and keep public information available, as those terms are
understood and defined in Rule 144 under the Securities Act, at all times after
the effective date of the first registration under the Securities Act filed by
the Company for an offering of its securities to the general public;

                                       8

<PAGE>

        (b) Use its best efforts to then file with the Commission in a timely
manner all reports and other documents required of the Company under the
Securities Act and the Exchange Act (at any time after it has become subject to
such reporting requirements);

        (c) Furnish to Holders of Registrable Securities forthwith upon request,
a written statement by the Company as to its compliance with the reporting
requirements of Rule 144 (at any time after 90 days after the effective date of
the first registration statement filed by the Company for an offering of its
securities to the general public), and of the Securities Act and the Exchange
Act (at any time after it has become subject to such reporting requirements), a
copy of the most recent annual or quarterly report of the Company, and such
other reports and documents of the Company as a Holder of Registrable Securities
may reasonably request in availing itself of any rule or regulation of the
Commission allowing such Holder to sell any such securities without
registration.

     15. TRANSFER OF REGISTRATION RIGHTS. The right to cause the Company to
register securities granted the Purchasers hereunder may be assigned to a
transferee or assignee who acquires at least 6,750 shares of Preferred, or
Common Stock issued upon conversion thereof or Common Stock issued upon exercise
or conversion of any warrants or other rights to acquire Preferred or Common
Stock granted in connection with the sale of any series of Preferred
(appropriately adjusted for stock splits, recapitalizations and the like)
provided that the Company is given prior written notice of such assignment. In
addition, rights to cause the Company to register securities may be freely
assigned (a) to any constituent partner of a Holder of Registrable Securities,
where such Holder is a partnership, or (b) to the spouse, children,
grandchildren or spouse of such children or grandchildren of any Holder or to
trusts for the benefit of any Holder or such persons.

     16. SUBSEQUENT REGISTRATION RIGHTS. In the event the Company should engage
in a subsequent round or rounds of financing involving the sale of its capital
stock or any security convertible into or exercisable for the purchase of its
capital stock, at the election of the Company, the purchasers thereof shall be
entitled to registration rights on parity, on a share-for-share basis, in all
respects with those rights conferred upon the Purchasers and the Holders herein
and the Purchasers acknowledge and agree that such registration rights may be
granted by the Company pursuant to this Agreement without further modification
or amendment and without the consent of any Purchaser or Holder herein.

                             II. INFORMATION RIGHTS

     17. INFORMATION RIGHTS. The Company hereby covenants and agrees to furnish
to each Holder for so long as such Holder is a holder of any shares of Preferred
purchased by such person from the Company (or Common Stock issued upon
conversion of the Preferred), as soon as practicable after the end of each
fiscal year, and in any event within 90 days thereafter, consolidated balance
sheets of the Company and its subsidiaries, if any, as of the end of such fiscal
year, and consolidated statements of income and consolidated statements of
changes in financial position of the Company and its subsidiaries, if any, for
such year, prepared in accordance with generally accepted accounting principles,
provided that this Section 17 shall terminate and be of no further force or
effect immediately upon an initial public offering. Each Holder who receives
from the Company or its agents, directly or indirectly, any information which
the Company has not made generally available to the public, pursuant to the
preparation and execution of this Agreement or disclosure in connection
therewith or pursuant to the provisions of this Section 17, acknowledges

                                       9

<PAGE>

and agrees that such information is confidential and for its use only in
connection with evaluating its investment in the Company, and further agrees
that it will not disseminate such information to any person other than its
accountant, investment advisor or attorney and that such dissemination shall be
only for purposes of evaluating its investment.

                           III. RIGHT OF FIRST REFUSAL

     18. TRANSFERS OF SECURITIES. Before any Purchaser (which for purposes of
this Section 18 shall include both the Purchasers and the holders of Common
Stock) may transfer any of its shares of Preferred (including Common Stock
issued upon conversion of the Preferred) or Common Stock (either referred to as
"Shares"), such Shares shall first be offered to the Company as follows:

        (a) The Purchaser desiring to transfer the Shares (the "Seller") shall
deliver a notice ("Notice") to the Company stating (1) its bona fide intention
to sell or transfer such shares, (2) the number of shares to be sold or
transferred, (3) the price for which the Seller proposes to sell or transfer
such shares and (4) the name of the proposed purchaser or transferee.

        (b) Within thirty (30) days after delivery of the Notice, the Company
may elect to purchase all or part of the shares referenced in the Notice, by
delivery to the Seller of a written notice stating the number of shares it
elects to purchase (referred to in this Section 18 as the "right of first
refusal").

        (c) In the event that the Company fails to exercise in full the right of
first refusal within the period specified above, the Seller shall have one
hundred twenty (120) days thereafter to sell the shares referenced in the Notice
at a price and upon terms no more favorable to the purchaser thereof than
specified in the Notice. In the event that the Seller has not sold such shares
within such one hundred twenty (120) day period, the Seller shall not thereafter
sell any of such shares without first offering such shares to the Company.

        (d) The provisions of this Section 18 shall not apply (and no Notice
shall be required) to a transfer of any shares (1) by a Purchaser to any
constituent partner of a Purchaser, where such Purchaser is a partnership;
provided, however, that any such transferee shall receive and hold such shares
subject to the provisions of this Section 18 and there shall be no further
transfer of such shares except in accordance herewith, and (ii) by a Purchaser
as to shares sold as part of an initial public offering.

        (e) The right of first refusal granted pursuant to this Section 18 shall
expire immediately prior to the IPO Date.

        (f) So long as this Section 18 is in effect, each certificate
representing shares of the Company's Registrable Securities, and any additional
Common Stock issued upon any stock split, recapitalization or similar event,
held by a Holder shall be stamped or otherwise imprinted with a legend in the
following form (in addition to any other legends required under applicable
federal or state securities laws):

        THE SALE OR TRANSFER OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE
        IS SUBJECT TO THE TERMS AND CONDITIONS OF A RIGHT OF FIRST REFUSAL
        WHEREBY THE COMPANY HAS THE RIGHT TO

                                       10
<PAGE>

        PURCHASE THE SHARES REPRESENTED BY THIS CERTIFICATE PRIOR TO THE
        CONSUMMATION OF A SALE TO ANY OTHER PERSON. A COPY OF SUCH AGREEMENT MAY
        BE OBTAINED UPON A WRITTEN REQUEST TO THE SECRETARY OF THE COMPANY.

                             IV. GENERAL PROVISIONS

     19. GOVERNING LAW. This Agreement shall be governed by and interpreted in
accordance with the laws of the State of California. The parties hereto agree to
submit to the jurisdiction of the federal and state courts of the State of
California with respect to the breach or interpretation of this' Agreement or
the enforcement of any and all rights, duties, liabilities, obligations, powers,
and other relations between the parties arising under this Agreement.

     20. ENTIRE AGREEMENT. This Agreement constitutes the full and entire
understanding among the parties regarding the subject matter herein and
supersedes and replaces all prior registration rights agreements of the Company
among the Company and any holders of its securities. Except as otherwise
expressly provided herein, the provisions hereof shall inure to the benefit of,
and be binding upon, the successors, assigns, heirs, executors and
administrators of the parties hereto.

     21. NOTICES, ETC. All notices and other communications required or
permitted hereunder shall be in writing and shall be deemed effectively given
upon delivery to the party to be notified in person or by courier service or
five (5) days after deposit with the United States mail, by registered or
certified mail, postage prepaid, addressed (a) if to a Purchaser, to such
Purchaser's address set forth on the signature pages hereto, or at such other
address as such Purchaser shall have furnished to the Company in writing, or (b)
if to any other holder of any Registrable Securities, to such address as such
holder shall have furnished the Company in writing, or, until any such holder so
furnishes an address to the Company, then to and at the address of the last
holder of such Securities who has so furnished an address to the Company, or (c)
if to the Company, to its address set forth on the signature page of this
Agreement the attention of the Corporate Secretary, or at such other address as
the Company shall have furnished to the Holders.

     22. COUNTERPARTS. This Agreement may be executed in any number of
counterparts, each of which shall be an original, but all of which together
shall constitute one instrument.

     23. AMENDMENT. Any provision of this Agreement may be amended upon the
written consent of the (i) Company and (ii) holders of a majority of the
outstanding shares of the Registrable Securities; provided, however, that in the
event the Company should grant registration rights to other purchasers in
accordance with Section 16 above, such purchasers shall become "Purchasers" for
all purposes of this Agreement upon execution of an acknowledgment of and
agreement to the terms of this Agreement, whereupon such purchaser shall be
deemed to be a "Purchaser" under this Agreement, without any further consent or
approval of the other Purchasers. Any Purchaser may waive any of his or her
rights or the Company's obligations hereunder without obtaining the consent of
any other person.

                                       11
<PAGE>

     IN WITNESS WHEREOF, the undersigned have executed this Third Amended and
Restated investor Rights Agreement as of the date set forth above.

"COMPANY"                          MONOLITHIC SYSTEM TECHNOLOGY, INC.,
                                   a California corporation
                                   1020 Stewart Drive
                                   Sunnyvale, California 94086

                                   By:
                                      ---------------------------------------
                                      Fu-Chieh Hsu, President

"PURCHASERS"
                                   ------------------------------------------
                                                (name of Purchaser)

                                   By:
                                      ---------------------------------------
                                                     (signature)

                                   ------------------------------------------
                                                       (title)

                                       12

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