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                                                                    EXHIBIT 10.9

                                    AGREEMENT

       THIS AGREEMENT ("AGREEMENT") is effective as of August 31, 1999 (the
"EFFECTIVE DATE") by and between Monolithic System Technology, Inc., a
corporation organized and existing under the laws of the State of California,
and having a principal place of business at 1020 Stewart Drive, Sunnyvale,
California, 94086, United States of America (which may be referred to in this
Agreement as either "MOSYS, INC." or "MOSYS"), and Nintendo Co., Ltd, a
corporation organized and existing under the laws of Japan, and having a
principal place of business at 60 Fukuine Kamitakamatsu-cho, Higashiyama-ku,
Kyoto 605-8660, Japan ("NINTENDO") (each a "PARTY;" together the "PARTIES").

                                   BACKGROUND

       WHEREAS, Nintendo is developing a proprietary product which is currently
code-named "Dolphin", and MoSys is a fab-less semiconductor memory technology
company that has developed and is developing certain proprietary technology
involving semiconductor memories;

       WHEREAS, Nintendo desires to obtain under license certain memory
integrated circuit products that use 1T-SRAM memory technology of MoSys to
incorporate into the Dolphin Product, and MoSys desires to enable Nintendo as a
preferred customer and other third parties working on Dolphin to obtain such
integrated circuit products from certain third party integrated circuit
manufacturers;

       WHEREAS, MoSys is in confidential discussions with such manufacturers
regarding the possible development, manufacture and sale of such integrated
circuit products, but no definitive agreements have been reached and the
integrated circuit products have not been developed; and

       WHEREAS, MoSys and Nintendo desire to enter into an agreement on the
terms and conditions set forth below to develop Prototype 1T-SRAM Memories and
establish fees to be paid directly by Nintendo to MoSys for integrated circuit
products in the event they become available and are purchased by Nintendo.

       NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants contained herein, the Parties agree as follows:

SECTION 1.    DEFINITIONS

         For purposes of this Agreement the following terms shall have the
meanings set forth below:

*Marked items are omitted pursuant to a request for confidential treatment
and filed with the Securities and Exchange Commission.

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       1.1    "AUTHORIZED MANUFACTURER" means a third party in the regular
business of manufacturing integrated circuit devices who is listed in the
attached EXHIBIT A and is expressly authorized by MoSys in a Manufacturer
Agreement to manufacture and sell a High Density 1T-SRAM Memory.

       1.2    "DOLPHIN PRODUCT" means the next generation video game platform
currently being developed by Nintendo and referred to as the "Dolphin" product,
as such product is modified, developed and ultimately released by Nintendo. This
Agreement shall be amended to identify such product by its actual commercial
name when available if requested by either Party.

       1.3    "FEES" means all amounts payable to MoSys under this Agreement.

       1.4    "HIGH DENSITY 1T-SRAM MEMORIES" means products expressly
identified as "High Density 1T-SRAM Memories" in a Manufacturer's Agreement
between MoSys and the third party integrated circuit manufacturer and which are
listed in the attached EXHIBIT A as well as Prototype 1T-SRAM Memories as listed
in the attached EXHIBIT B. The Parties currently plan that the High Density
1T-SRAM Memories will include stand alone memory integrated circuits, which are
expected to use the MoSys 1T-SRAM technology.

       1.5    "MANUFACTURER'S AGREEMENT" means a confidential written agreement
that expressly refers to this Agreement by the names of the Parties and the
Effective Date and title set forth above, that is executed by MoSys and the
applicable third party integrated circuit manufacturer, and that expressly
covers integrated circuit products that use MoSys's 1T-SRAM technology that may
be sold to Nintendo for use in the Dolphin Product.

       1.6    "MOSYS INTELLECTUAL PROPERTY" means any and all know-how,
technical information, trade secrets, patents and patent applications owned or
controlled by MoSys (a partial list of which is attached in EXHIBIT C), which
(i) MoSys has the right to license, relating to memory architecture, protocol
and circuit implementation, and which (ii) are incorporated in the High Density
1T-SRAM Memory by MoSys. The term "MoSys Intellectual Property" does not include
any and all know-how, technical information, trade secrets and circuit
implementation which is (a) in the public domain, (b) known generally by persons
skilled in the art, (d) already in the rightful possession of Nintendo, (d)
hereafter becomes available for use without license, (e) owned or controlled by
others, including but not limited to which relating to generic DRAM processes,
memory cells, capacitor fabrication and memory operations, (f) hereafter becomes
rightfully known to Nintendo without restriction or (g) subsequently developed
independently by employees of Nintendo without access to the High Density
1T-SRAM Memory.

       1.7    "PER UNIT ROYALTY" means the per unit royalty payable by an
Authorized Manufacturer to MoSys under a Manufacturer's Agreement for the sale
of a High Density 1T-SRAM Memory to Nintendo and which is identified in such
agreement as a royalty that will be waived by MoSys for sales to Nintendo of
High Density 1T-SRAM Memories used in the Dolphin Product. Per Unit Royalty
shall not include any up front or other lump sum license fees, any costs,
expenses, duties, tariffs or taxes, or any non-recurring charges or any other
amounts associated with the development of any products, which the Parties
contemplate will be charged to and paid by any Authorized Manufacturer.

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       1.8    "PROTOTYPE DEVELOPMENT FEES" means the Fees payable by Nintendo to
MoSys under this Agreement for the development of the Prototype 1T-SRAM Memory
integrated circuits.

       1.9    "PROTOTYPE 1T-SRAM MEMORIES" means the prototype high-density,
1T-SRAM memory integrated circuit developed by MoSys on behalf of Nintendo
which is included in the attached EXHIBIT B. It is contemplated that only
approximately [*] units of the Prototype 1T-SRAM Memories will be manufactured
for Nintendo, provided, however, that Nintendo may request a reasonable number
of additional units be manufactured as mutually agreed by the parties.

       1.10   "PURCHASE PRICE" means the gross sales amount invoiced or
otherwise charged to Nintendo by an Authorized Manufacturer for the purchase or
other disposition of a High Density 1T-SRAM Memory in finished and packaged form
in a fully arms length transaction, excluding import, export, value added,
excise and sales taxes, customs duties, and tariffs actually paid. In the event
that a High Density 1T-SRAM Memory is bundled with other products or otherwise
sold or disposed of under circumstances which might indicate that the
transaction was on other than a fully arms length basis, the Purchase Price
shall, upon MoSys's request, mean the fair market value of the High Density
1T-SRAM Memory. Such fair market value shall be determined by looking at the
arms length sales to third parties of similar MoSys products, or if such arms
length sales do not appear to provide a reasonable basis for the fair market
value, the arms length sales to third parties of similar MoSys and other
products.

       1.11   "QUARTER" means a period of three (3) consecutive calendar months
which period commences upon either January 1, April 1, July 1, or October 1.

       1.12   "TERM" means the initial term and any renewal term under Section 6
below.

SECTION 2.    LICENSE; PRODUCT PURCHASES

       2.1    AVAILABILITY OF PRODUCTS. MoSys is currently in discussions with
potential Authorized Manufacturers concerning the possible development,
manufacture, and sale of High Density 1T-SRAM Memories, but definitive
agreements have not yet been reached and High Density 1T-SRAM Memories have not
yet been developed. It is understood and agreed that Nintendo's ability to
obtain High Density 1T-SRAM Memories is contingent upon availability from
MoSys's Authorized Manufacturers and because availability is anticipated as
being only through such third parties, the design, performance, and availability
of High Density 1T-SRAM Memories may not be in MoSys's sole control. In light of
the foregoing, but subject to the last sentence in this Section 2.1, this
Agreement is not intended to obligate MoSys to sell, make available, or continue
to make available to Nintendo, or obligate Nintendo to purchase, any High
Density 1T-SRAM Memories. Rather, this Agreement is intended to establish the
Fees to be paid to MoSys by Nintendo for High Density 1T-SRAM Memories used in
the Dolphin Product only to the extent the High Density 1T-SRAM Memories become
and remain available through such Authorized Manufacturers. EXHIBIT A hereto may
be amended to add High Density 1T-SRAM Memories only by mutual written agreement
of both Parties and shall list the Authorized Manufacturers that are authorized
by MoSys to supply each High Density 1T-SRAM Memory. It is acknowledged that
this Agreement does not prevent the High Density 1T-SRAM Memories from being
modified, changed, or discontinued at any time, provided, however, that MoSys
shall deliver to Nintendo prior written

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notice of any such modification, change or intent to discontinue.
Notwithstanding the foregoing, in the event definitive agreements are executed
and High Density 1T-SRAM Memories are developed, all applicable terms and
conditions of this Agreement shall apply to and govern the relationship between
Nintendo and MoSys.

       2.2    LICENSE; PURCHASE OF PRODUCTS. Subject to the terms and conditions
of this Agreement and acceptance of the High Density 1T-SRAM Memory from MoSys,
MoSys grants Nintendo as a preferred customer a royalty-bearing, world-wide
license to have manufactured by an Authorized Manufacturer, use, sell, and
distribute the High Density 1T-SRAM Memory acquired from and manufactured by any
Authorized Manufacturer. Nintendo shall also have the right to inform any
Authorized Manufacturer of the terms of this Agreement governing the waiver of
payment of Per Unit Royalties by any Authorized Manufacturer and the payment of
Fees by Nintendo in arranging such purchases. MoSys will confirm to the
Authorized Manufacturers these terms and will waive the obligation of Authorized
Manufacturers to pay Per Unit Royalties to MoSys under Manufacturers' Agreements
solely as follows. MoSys will waive each Authorized Manufacturer's obligation to
pay Per Unit Royalties to MoSys under a Manufacturer's Agreement for each
authorized sale by the Authorized Manufacturer to Nintendo of a High Density
1T-SRAM Memory that is used by Nintendo in the Dolphin Product; provided that
MoSys has received from Nintendo payment of the applicable Fees in accordance
with Section 3 below. Nintendo shall not request the waiver for, and the waiver
shall not apply to, any High Density 1T-SRAM Memories that are not incorporated
into the Dolphin Product. The waiver will be made in accordance with the terms
of the applicable Manufacturer's Agreement.

       2.3    DEVELOPMENT OF PROTOTYPE 1T-SRAM MEMORIES. MoSys deems Nintendo a
preferred customer and therefore agrees to develop on behalf of Nintendo the
Prototype 1T-SRAM Memories according to the specifications in the attached
EXHIBIT B. Upon timely completion of the Prototype 1T-SRAM Memories, MoSys shall
use commercially reasonable efforts to promptly deliver the Prototype 1T-SRAM
Memories to Nintendo along with associated design specifications and application
documents and further grants Nintendo the right to have the Prototype 1T-SRAM
Memories manufactured by an Authorized Manufacturer of Nintendo's choice in
accordance with the terms of the applicable Manufacturer's Agreement.

       2.4    NO OTHER RIGHTS. Except as expressly granted herein, nothing in
this Agreement grants to Nintendo any right or license to manufacture or to have
manufactured the High Density 1T-SRAM Memories or any right or license under any
intellectual property or proprietary rights of MoSys, whether by reliance,
implication, estoppel or otherwise. Nintendo shall not exercise its rights under
this Agreement in any manner, or take any other action, which adversely affects
MoSys's rights in and to the High Density 1T-SRAM Memories. ALL RIGHTS NOT
EXPRESSLY GRANTED HEREIN ARE RESERVED TO MOSYS. It is understood and agreed that
MoSys may in its sole discretion determine the terms and conditions to which it
wishes to agree in each Manufacturer's Agreement and that MoSys shall have no
obligations or responsibility to Nintendo to obtain any particular terms or
conditions, except that any manufacture or production of High Density 1T-SRAM
Memories shall meet the specifications set forth in the attached EXHIBIT B. It
is also understood and agreed that the actual price between Nintendo and the
Authorized Manufacturer for the purchase of High Density 1T-SRAM Memories is not
under MoSys's control and that MoSys shall have no obligations, responsibility
or liability concerning such price. Except as expressly granted herein, nothing
in this Agreement grants to MoSys any right or license under any intellectual

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property or proprietary rights of Nintendo, whether by reliance, implication,
estoppel or otherwise. MoSys shall not exercise its rights under this Agreement
in any manner, or take any other action, which adversely affects Nintendo's
rights in and to the Dolphin Product. ALL RIGHTS NOT EXPRESSLY GRANTED HEREIN
ARE RESERVED TO NINTENDO.

       2.5    EXCLUSIVITY. MoSys agrees that, from the Effective Date through
December 31, 2001, providing Nintendo continues to actively promote the use
of 1T-SRAM as specified in this Agreement, MoSys agrees not to sell, provide
or otherwise distribute the same High Density 1T-SRAM Memory as specified in
EXHIBITS A and B to Sony Computer Entertainment Company or Sega Corporation
as part of their video game consoles. Notwithstanding the above, however,
MoSys shall have no obligation to impose such a restriction on any of its
licensees.

SECTION 3     COMPENSATION TO MOSYS

       3.1    PRODUCT FEES. In consideration of the preferred rights provided to
Nintendo hereunder, Nintendo shall pay to MoSys the negotiated Fee in the amount
set forth below for each High Density 1T-SRAM Memory for which Nintendo would
like MoSys to waive the Authorized Manufacturer's Per Unit Royalty in accordance
with Section 2.2 above:

       (a)    [*] of the Purchase Price for each of the first [*] units of
High Density 1T-SRAM Memory obtained from an Authorized Manufacturer; and

       (b)    [*] of the Purchase Price for each High Density 1T-SRAM Memory
obtained from an Authorized Manufacturer in excess of such first [*] units.

In the event any High Density 1T-SRAM Memories as delivered are not accepted by
Nintendo or are otherwise rejected due to defects or other performance problems
and such High Density 1T-SRAM Memories are returned to any Authorized
Manufacturer, Nintendo shall be entitled and have the right to deduct from and
set off against any amounts payable by Nintendo under this Agreement any amounts
owed by Nintendo to MoSys for such High Density 1T-SRAM Memories as described in
this Section 3.

       3.2    PROTOTYPE DEVELOPMENT FEES. In consideration of the development
and delivery to Nintendo of the Prototype 1T-SRAM Memories, Nintendo shall pay
to MoSys the negotiated Fee of [*] as set forth in EXHIBIT B.

       3.3    PAYMENT. Unless otherwise specified, all Fees (except Prototype
Development Fees) shall be due and paid no later than [*] days after the end of
the Quarter during which any High Density 1T-SRAM Memories were obtained from an
Authorized Manufacturer. All payments shall be calculated and made in United
States Dollars by wire transfer to:

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                  Chiao Tung Bank
                  Silicon Valley Branch
                  333 West San Carlos St., Suite 100
                  San Jose, CA 95110, U.S.A.
                  Tel: +1 (408) 283-1888
                  Account Name: MoSys, Inc.
                  Account No.: 001-600642
                  Routing No.: 1211-41754

with notification to:

                  Chief Financial Officer
                  MoSys, Inc.
                  1020 Stewart Drive
                  Sunnyvale, CA 94086, U.S.A.
                  Tel: +1 (408) 731-1814
                  Fax: +1 (408) 731-1893

unless otherwise specified in writing by MoSys. All notifications to MoSys shall
be accompanied by a written report from Nintendo showing the number of and
actual Purchase Price for each High Density 1T-SRAM Memory to which the payment
applies as well as the total number of each High Density 1T-SRAM Memory obtained
from each Authorized Manufacturer as of the date of the report.

       3.4    TAXES. Any and all Fees payable hereunder do not include any
government taxes (including without limitation sales, use, excise, and value
added taxes) or duties imposed by any governmental agency that are applicable to
the export, import, or purchase of the Products (other than taxes on the net
income of MoSys), and Nintendo shall bear all such taxes and duties. When MoSys
has a current or subsequent legal obligation to collect and/or pay such taxes,
the appropriate amount shall be added to Nintendo's invoice and paid by
Nintendo, unless Nintendo provides MoSys with a valid tax exemption certificate
authorized by the appropriate taxing authority. All payments by Nintendo
specified hereunder are expressed as net amounts and shall be made free and
clear of, and without reduction for, any withholding taxes. Any such taxes which
are otherwise imposed on payments to MoSys shall be the sole responsibility of
Nintendo. If any applicable law requires Nintendo to withhold amounts from any
payments to MoSys hereunder, (i) Nintendo shall effect such withholding, remit
such amounts to the appropriate taxing authorities and promptly furnish MoSys
with tax receipts evidencing the payments of such amounts, and (ii) the sum
payable by Nintendo upon which the deduction or withholding is based shall be
increased to the extent necessary to ensure that, after such deduction or
withholding, MoSys receives and retains, free from liability for such deduction
or withholding, a net amount equal to the amount MoSys would have received and
retained in the absence of such required deduction or withholding. In the event
that MoSys receives a reduction in tax due or rebate from any tax authority
directly due to the amount withholding tax paid by Nintendo, it will promptly
reimburse Nintendo such amount that it has had reduced or received from the tax
authority. Upon request, MoSys shall promptly provide Nintendo, with a copy of
all its relevant tax documents and filings as authorized by the appropriate tax
authority or authorities. For purposes of this Section 3.4, the parties
acknowledge that Nintendo intends to take delivery of all High Density 1T-SRAM
Memories and other related products in

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Japan. When and if applicable, MoSys shall timely execute and deliver to NCL, a
tax form in the form which is attached hereto as EXHIBIT D.

       3.5    LATE PAYMENT. Any payments due under this Agreement which are not
paid when due shall bear interest to the extent permitted by applicable law at
the prime rate as reported by the Chase Manhattan Bank, New York, New York, on
the date such payment is due, plus an additional three percent (3%), calculated
on the number of days such payment is delinquent. This Section 3.5 shall in no
way limit any other remedies available to any Party. In the event that Fees are
not timely paid under this Agreement, MoSys shall have no obligation to waive
the applicable Per Unit Royalties of the Authorized Manufacturer. In the event
that MoSys elects not to waive the Per Unit Royalties it shall notify Nintendo
of this fact.

       3.6    AUDIT RIGHTS. MoSys grants to Nintendo and Nintendo shall have the
right to review and audit any draft and/or final version of any Manufacturer's
Agreement between MoSys and any Authorized Manufacturer. In addition, Nintendo
and MoSys each agree to make and to maintain until the expiration of three (3)
years after the year to which such records pertain, sufficient books, records
and accounts regarding, with respect to Nintendo, its purchase and other
activities in order to calculate and confirm its payment, and with respect to
both Parties, each of their respective confidentiality and other obligations
hereunder. Nintendo and MoSys will each have the right, at its own expense and
not more than once in any calendar year, to have an independent certified public
accountant, or other reasonably acceptable professional, inspect, upon
reasonable notice and during regular business hours, Nintendo's or MoSys's
relevant records and practices to verify, with respect to Nintendo, the accuracy
of Fees paid and compliance with its payment obligations, and with respect to
both Parties, each of their respective confidentiality and other obligations
under the terms of this Agreement. If any such examination discloses a shortfall
in the Fees paid to MoSys hereunder or other non-compliance by either Party with
this Agreement, Nintendo shall reimburse MoSys for the full amount of any such
shortfall and Nintendo or MoSys shall have the right to repeat the examination
in the applicable calendar year. If the amount of underpayment for any period is
more than five percent (5%) Nintendo shall pay MoSys's actual out-of-pocket
costs (including without limitation attorneys' fees and fees paid to the
auditor) of performing the audit with respect to such period.

SECTION 4     PROPRIETARY NOTICES AND MARKETING

       4.1    PROPRIETARY NOTICES. Nintendo shall not remove any trademark,
trade name, mask work notice, patent marking or other proprietary notice from
the High Density 1T-SRAM Memories. As reasonably requested by MoSys, Nintendo
further agrees to apply all applicable mask work, patent, copyright and other
proprietary notices in order to fully preserve and protect MoSys's rights and
remedies under applicable laws.

       4.2    PUBLIC ANNOUNCEMENTS. After execution of this Agreement by both
Parties, MoSys and Nintendo will issue a mutually agreed-upon joint public
announcement stating that MoSys's proprietary embedded 1T-SRAM technology has
been selected by Nintendo as the memory in the graphics chip in the Dolphin
Product. At a mutually agreed later date, contemplated to be no later than the
second Quarter of 2000, MoSys and Nintendo will issue a mutually agreed-upon
joint public announcement stating that Nintendo has selected MoSys's ultra-high
density 1T-SRAM discrete memory devices for use in the Dolphin Product in
addition to the embedded 1T-SRAM memory.

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Each Party shall use diligent good faith efforts to promptly mutually agree to
such public announcements, and neither will unreasonably withhold its agreement
to a public announcement concerning the foregoing that is proposed by the other.

SECTION 5     CONFIDENTIALITY

       5.1    OBLIGATIONS. The parties have entered into a separate
non-disclosure agreement dated March 23, 1999, and hereby acknowledge and agree
that such confidentiality agreement shall govern and control all confidential
information of the Parties, including maintaining confidential the existence of
and the terms and conditions of this Agreement except as specifically set forth
herein or until otherwise agreed to in writing by the Parties.

SECTION 6     TERM AND TERMINATION

       6.1    TERM. This Agreement shall remain in effect until December 31,
2006, from the Effective Date unless earlier terminated as provided below. This
Agreement may be renewed thereafter for additional one (1) year terms only by
mutual written agreement of both Parties.

       6.2    TERMINATION FOR BREACH. In the event of a material breach by
either Party, the non-breaching Party shall be entitled to give the breaching
Party written notice of such breach. If the breaching Party has not cured such
breach within thirty (30) days after receipt of such notice, the non-breaching
Party shall be entitled, in addition to any other rights it may have under this
Agreement or otherwise under law, to terminate this Agreement by giving notice
thereof to the other Party which shall take effect immediately.

       6.3    TERMINATION BY MOSYS. This Agreement may be terminated at any time
by MoSys by providing written notice to Nintendo in the event of a good faith
disagreement regarding the determination of the Purchase Price as set forth in
Section 1.10, which disagreement is not resolved after: (a) thirty (30) days
from the date on which both Parties become aware of the disagreement and are
unable to resolve any disagreement by mutual consent; and (b) if the Parties are
unable to resolve such disagreement, the matter will be submitted to an
independent arbitrator acceptable to both Parties who will review materials from
both Parties and issue a written decision which will be binding on both Parties.

       6.4    TERMINATION BY NINTENDO. This Agreement may be terminated at any
time by Nintendo by providing written notice to MoSys in the event of a
disagreement regarding the design quality of the High Density 1T-SRAM Memories,
which disagreement is not resolved after: (a) thirty (30) days from the date on
which both Parties become aware of the disagreement and are unable to resolve
any disagreement by mutual consent; and (b) if the Parties are unable to resolve
such disagreement, the matter will be submitted to an independent arbitrator
acceptable to both Parties who will review materials from both Parties and issue
a written decision which will be binding on both Parties.

       6.5    EFFECT OF TERMINATION OR EXPIRATION. Upon termination or
expiration of this Agreement for any reason, the rights granted under this
Agreement shall immediately terminate except as expressly set forth in Section
6.6 below. Upon such termination, each Party shall immediately destroy or return
to the other Party all tangible items in its possession or control which are
proprietary to the delivering Party.

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       6.6    SURVIVAL. The provisions of Section 3, 4.1, 5, 6, 7, 8 and 9 shall
survive the termination or expiration of this Agreement for any reason. It is
expressly understood and agreed that, notwithstanding anything to the contrary
herein, any compensation or payment obligations accruing under Section 3 above
prior to termination, shall continue unaffected and survive termination of this
Agreement for any reason.

SECTION 7     CUSTOMER SUPPORT, WARRANTIES AND INDEMNIFICATION

       7.1    GENERAL. Except as provided in this Agreement and this Section 7,
Nintendo shall be solely responsible for obtaining desired warranties and
indemnification directly from the applicable Authorized Manufacturer rather than
from MoSys. Except for warranties and indemnification so obtained, Nintendo
shall be solely responsible for the representations and warranties that it
provides with respect to the High Density 1T-SRAM Memories. MoSys shall have no
obligation to honor any such representations or warranties, and Nintendo agrees
to expressly disclaim on MoSys's behalf any and all warranties, whether express,
implied, statutory or otherwise. Except for support and maintenance obtained by
Nintendo directly from the Authorized Manufacturer, Nintendo shall be solely
responsible for providing support and maintenance to its customers. MoSys's sole
obligation, responsibility and liability shall be directly to the Authorized
Manufacturer in accordance with the Manufacturer's Agreement

       7.2    MOSYS REPRESENTATIONS AND WARRANTIES. MoSys represents and
warrants to Nintendo that as of the Effective Date:

       (a)    to the best of MoSys's knowledge, it is the originator and/or
rightful owner of the MoSys Intellectual Property and the design information and
documentation of the High Density 1T-SRAM Memory provided to Nintendo pursuant
to the terms of this Agreement (hereinafter collectively "INFORMATION");

       (b)    there are no claims pending or, to the best of MoSys's knowledge,
threatened against MoSys, that relate to the Information or the contemplated use
of the Information by Nintendo and/or any Authorized Manufacturer under this
Agreement;

       (c)    it has received no written communication from a third party
asserting infringement or alleging infringement of their intellectual property
rights regarding 1T-SRAM memory technology which has not been resolved; and

       (d)    it has the full right and authority to enter into and perform any
and all applicable provisions of this Agreement and that there are no
encumbrances or other restrictions that may prevent MoSys or its employees from
performing any and all applicable provisions of this Agreement.

       7.3    INFRINGEMENT. Except as expressly provided herein, MoSys disclaims
and shall have no obligation of defense, contribution, or indemnity with respect
to any actual or alleged intellectual property infringement with respect to the
Information provided or otherwise arising out of this Agreement. Except as
expressly provided herein, MoSys shall have no liability arising out of any such
actual or alleged intellectual property infringement. Each Party, however, will
use commercially reasonable efforts to notify the other Party, in writing, of
any such infringement claim of which it becomes aware, and Nintendo shall
cooperate with MoSys if MoSys desires to intervene

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in any such infringement action by any third party against Nintendo, provided,
however, that MoSys shall have no control or right to control the defense of any
such infringement action unless it assumes full responsibility and liability for
such infringement action.

       7.4    LIMITATION OF CLAIMS. In the event of any claim by a third party
for alleged infringement by Nintendo of the third party's intellectual property
rights where such claim (i) is caused substantially by the unmodified High
Density 1T-SRAM Memories and, (ii) is not associated with standard DRAM
operations, processes, design or manufacturing then MoSys shall use its
commercially reasonable efforts at MoSys's sole expense to provide assistance,
including appropriate documentation and commercially reasonable access to
appropriate technical personnel, to Nintendo, in Nintendo's defense against such
claim under this provision. If pursuant to such a claim Nintendo is or may
become prohibited from using the High Density 1T-SRAM Memories, MoSys shall use
commercially reasonable efforts to modify the design of the High Density 1T-SRAM
Memories to avoid any infringement without impairing the ability to use the High
Density 1T-SRAM Memories as intended. In addition, if pursuant to such a claim
Nintendo is or may become prohibited from using the High Density 1T-SRAM
Memories, MoSys shall use commercially reasonable efforts to provide assistance,
including appropriate documentation and commercially reasonable access to
appropriate technical personnel, to Nintendo at rates to be agreed between the
Parties to assist Nintendo at Nintendo's sole expense in either replacing the
High Density 1T-SRAM Memories with compatible, functionally equivalent
non-infringing devices or securing the right to continue using the High Density
1T-SRAM Memories.

       7.5    LIMIT OF LIABILITY. The foregoing states MoSys's sole obligations
and entire liability with respect to any claimed infringement of the High
Density 1T-SRAM Memories of any intellectual property or other rights of any
third party.

       7.6    DISCLAIMERS.

       (a)    EXCEPT AS PROVIDED IN THIS AGREEMENT, THE WARRANTIES AND
INDEMNIFICATIONS OBTAINED BY NINTENDO DIRECTLY FROM THE AUTHORIZED MANUFACTURER
CONTAIN THE ENTIRE LIABILITY AND OBLIGATIONS OF MOSYS, AND THE EXCLUSIVE REMEDY
OF NINTENDO AND ITS CUSTOMERS, WITH RESPECT TO ANY ALLEGED OR ACTUAL
INFRINGEMENT OF PATENTS, MASK WORKS, TRADE SECRETS, COPYRIGHTS, OR OTHER
INTELLECTUAL PROPERTY RIGHTS BY THE HIGH DENSITY 1T-SRAM MEMORIES PRODUCED BY
THE AUTHORIZED MANUFACTURERS.

       (b)    EXCEPT AS PROVIDED IN THIS AGREEMENT, MOSYS MAKES NO
REPRESENTATIONS OR WARRANTIES OF ANY KIND AND NO REPRESENTATIONS OR WARRANTIES
SHALL BE MADE ON BEHALF OF MOSYS, WHETHER EXPRESS, IMPLIED, STATUTORY, OR
OTHERWISE, AND MOSYS SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
MERCHANTABILITY, NON-INFRINGEMENT OR FITNESS FOR A PARTICULAR PURPOSE.

SECTION 8     LIMITATION OF LIABILITY

       8.1    EXCEPT TO THE EXTENT EXPRESSLY SET FORTH IN THIS AGREEMENT, MOSYS
SHALL HAVE NO OBLIGATION, RESPONSIBILITY OR LIABILITY ARISING OUT OF OR
RESULTING FROM THE HIGH DENSITY 1T-SRAM MEMORY OR THE PURCHASE

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OR USE OF HIGH DENSITY 1T-SRAM MEMORIES PRODUCED BY THE AUTHORIZED
MANUFACTURERS. THE TOTAL LIABILITY OF MOSYS ARISING OUT OF OR RELATED TO THIS
AGREEMENT SHALL NOT EXCEED THE TOTAL AMOUNT PAID BY NINTENDO TO MOSYS HEREUNDER
(AT THE TIME LIABILITY IS DETERMINED AND LIQUIDATED) AND THE LIABILITY RELATING
TO SPECIFIC PRODUCT(S) PROVIDED HEREUNDER SHALL NOT EXCEED THE TOTAL AMOUNT PAID
BY NINTENDO TO MOSYS FOR SUCH PRODUCT(S) (AT THE TIME LIABILITY IS DETERMINED
AND LIQUIDATED). IN NO EVENT SHALL EITHER PARTY HAVE ANY LIABILITY FOR ANY
INDIRECT, INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES, HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER FOR BREACH OF CONTRACT, TORT (INCLUDING
NEGLIGENCE) OR OTHERWISE, ARISING OUT OF OR RELATED TO THIS AGREEMENT, OR FOR
COST OF PROCUREMENT OF SUBSTITUTE GOODS OR LOSS OF ANTICIPATED PROFITS, EVEN IF
THE PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
SHALL APPLY NOTWITHSTANDING ANY FAILURE OF ESSENTIAL PURPOSE OF ANY LIMITED
REMEDY.

SECTION 9     GENERAL PROVISIONS

       9.1    ASSIGNMENT. Neither Party may assign or transfer this Agreement or
any rights or obligations hereunder, by operation of law or otherwise, without
the prior written approval of the other Party and any such attempted assignment
or transfer shall be void; provided, however, that either Party may assign or
transfer this Agreement to an affiliate, subsidiary, or a successor to all or
substantially all of its business or assets to which this Agreement relates,
whether by way of merger, acquisition of stock or assets, or the like, if the
assignee agrees in writing to comply with all terms and conditions of this
Agreement. Notwithstanding the foregoing, if the assignee is a competitor of
MoSys or Sony Computer Entertainment Company or Sega Corporation, then the
assignment requires the prior written approval of the other Party. Subject to
the foregoing, this Agreement shall be binding upon and inure to the benefit of
the Parties, their successors and permitted assigns.

       9.2    NOTICES. All notices between the parties shall be in writing and
shall be deemed to have been given if personally delivered or made by certified
or registered mail (return receipt requested) or facsimile to the addresses set
forth as follows, or such other contact and/or address as is provided by notice
as set forth herein.

If to MoSys to:       MoSys, Inc.
                      1020 Stewart Drive
                      Sunnyvale, CA 94086, U.S.A.
                      Attention: Chief Financial Officer
                      Facsimile: 408-731-1893

If to Nintendo to:    Nintendo Co., Ltd.
                      60 Fukuine Kamitakamatsu-cho
                      Higashiyama-ku
                      Kyoto 605-8660, Japan
                      Attention: Genyo Takeda
                      Facsimile: +81 (75) 531-8623

                                       11
<PAGE>

With a copy to:       Nintendo of America Inc.
                      4820 150th Avenue N.E.
                      Redmond, Washington 98052, U.S.A.
                      Attention: Director, Corporate Legal Affairs
                      Facsimile: +1 (425) 882-3585

Notices shall be deemed effective upon receipt or, if delivery is not effected
by reason of some fault of the addressee, when tendered.

       9.3    EXPORT REGULATIONS. Nintendo understands that MoSys is subject to
regulation by the United States government, including, but not limited to, the
U.S. Department of Commerce and its other agencies, which prohibit export or
diversion of certain technical products and information to certain countries and
individuals.

       9.4    GOVERNING LAW. This Agreement, and all disputes arising out of or
relating to this Agreement, shall be governed and construed under the laws of
the State of Washington, U.S.A, without reference to conflict of laws
principles. The United Nations Convention on the International Sale of Goods
shall not apply.

       9.5    DISPUTE RESOLUTION. In the event of any dispute, controversy or
difference which may arise between the parties hereto out of or in connection
with or in relation to this Agreement, or the breach thereof, the parties hereto
shall in the first instance do their utmost to settle such dispute, controversy
or difference amicably.

       9.6    RELATIONSHIP OF THE PARTIES. The Parties are independent
contractors. Nothing in this Agreement shall constitute, nor shall any party
represent that there is any relationship of employee and employee, principal and
agent, partnership or joint venturers between the parties as a result of this
Agreement.

       9.7    SEVERABILITY. If, for any reason, a court or other body of
competent jurisdiction finds, or the Parties mutually believe, any provision of
this Agreement, or portion thereof, to be invalid or unenforceable, such
provision will be enforced to the maximum extent permissible and the remainder
of this Agreement will continue in full force and effect if the resulting
Agreement effects the original intent of the Parties. The Parties shall
negotiate in good faith toward an enforceable substitute provision that most
nearly achieves the intent and economic effect of the invalid or unenforceable
provision.

       9.8    FORCE MAJEURE. Other than the payment of money, nonperformance of
either Party shall be excused to the extent that performance is rendered
commercially unreasonable by acts of God, war, fire, flood, riot, power failure,
embargo, material shortages, strikes, governmental acts, man-made or natural
disasters, earthquakes, inability to obtain labor or materials through its
regular sources, failure or limitation of supply, or any other reason where
failure to perform is beyond the reasonable control and not caused by the
negligence of the non-performing Party. The time for performance shall be
extended for the time period lost due to the delay.

       9.9    WAIVER. The waiver of, or failure to strictly enforce, any breach
or default hereunder shall not constitute the waiver of any other or subsequent
breach or default or the rights of the Party to subsequently require strict
performance.

                                       12
<PAGE>

       9.10   HEADINGS. The paragraph headings appearing in this Agreement are
inserted only as a matter of convenience and in no way define, limit, construe
or describe the scope or extent of such paragraph, or in any way affect such
agreements.

       9.11   ENTIRE AGREEMENT. This Agreement, along with the Exhibits attached
hereto, the Non-Disclosure Agreement dated March 23, 1999, and the letter
regarding this Agreement signed contemporaneously herewith, which are all
incorporated herein by reference, sets forth the entire agreement between the
parties and supersedes, merges, and renders void any and all prior and
contemporaneous proposals, agreements, and representations between them, whether
written or oral, to the extent they relate in any way to the subject matter
hereof. This Agreement may be changed only by mutual agreement of the parties in
writing.

       9.12   FOREIGN CORRUPT PRACTICES ACT. In conformity with the United
States Foreign Corrupt Practices Act, neither Party nor any of their respective
employees and agents, shall directly or indirectly make any offer, payment, or
promise to pay; authorize payment; nor offer a gift, promise to give, or
authorize the giving of anything of value for the purpose of influencing any act
or decision of an official of any government within the Territory or the United
States Government (including a decision not to act) or inducing such a person to
use his or her influence to affect any such governmental act or decision in
order to assist in obtaining, retaining or directing any business.

       9.13   COUNTERPARTS. This Agreement may be executed simultaneously in two
(2) or more counterparts, each of which will be considered an original, but all
of which together will constitute one and the same instrument.

                                       13
<PAGE>

       IN WITNESS WHEREOF, the parties have caused this Agreement to be signed
by duly authorized representatives on the dates set forth below to be effective
as of the Effective Date set forth above.

MONOLITHIC SYSTEM TECHNOLOGY, INC.

Date: _______________                       ___________________________
                                            (Signature)

                                            ___________________________
                                            (Printed Name)

                                            ___________________________
                                            (Title)

                                            NINTENDO CO., LTD.

                                            Date: _____________________
                                            (Signature)

                                            ___________________________
                                            (Printed Name)

                                            ___________________________
                                            (Title)

                                       14
<PAGE>

EXHIBIT A
HIGH DENSITY 1T-SRAM MEMORIES

1.  SPECIFICATIONS OF THE HIGH DENSITY 1T-SRAM MEMORIES [*]

   ----------------------------- --------------- -----------------------------
        CONFIGURATION                PROCESS        AUTHORIZED MANUFACTURERS
   ----------------------------- --------------- -----------------------------
      3M x 32 bit 1T-SRAM              (TBD)                (TBD)
   ----------------------------- --------------- ------------------------------

<PAGE>

EXHIBIT B
PROTOTYPE 1T-SRAM MEMORIES

1.   SPECIFICATIONS OF THE PROTOTYPE 1T-SRAM MEMORIES [*]

2.   PAYMENTS

     2.1 PAYMENTS OF PROTOTYPE DEVELOPMENT FEES BY NINTENDO TO MOSYS.
Nintendo shall pay the following Prototype Development Fees to MoSys:

     (a) Within [*] of the Effective Date, Nintendo shall pay to MoSys the
non-refundable, non-cancelable amount of [*], and;

     (b) Within [*] of tape-out of the Prototype 1T-SRAM Memories, Nintendo
shall pay to MoSys the non-refundable, non-cancelable amount of [*].

<PAGE>

EXHIBIT C
MOSYS PATENTS AND PATENT APPLICATIONS

     1.   The License  granted under this Agreement may contain all or
portions the following U.S. patents owned by MoSys:

          MoSys' Patent numbers 5,265,047, 5,498,886, 5,498,990, 5,511,020,
          5,576,554, 5,592,632, 5,613,077, 5,615,169, 5,655,113, 5,666,480,
          5,703,827, 5,708,624, 5,729,152, 5,737,587, 5,784,705, 5,787,267,
          5,790,138, 5,805,509, 5,831,467, 5,843,799 and 5,829,026

     2.   The License granted under this Agreement may contain all or
portions the following patents applications filed by MoSys:

          MoSys' Patent Application numbers [*]<PAGE>

                                                                   Exhibit 10.10

                                LICENSE AGREEMENT

This License Agreement, (the "Agreement"), Number 0011, with an "Effective Date"
of January 31, 1999, is made by and between MoSys, Inc., a California
corporation, with its principal place of business at 1020 Stewart Drive,
Sunnyvale, California 94086, U.S.A. (hereinafter referred to as "MoSys"), and
NEC Corporation, a Japanese corporation with its principal place of business at
7-1, Shiba, 5-chome, Minato-ku, Tokyo 108-8001, Japan (hereinafter referred to
as "Licensee").

WHEREAS, MoSys has developed and is developing certain semiconductor
technology; and

WHEREAS, Licensee desires to license from MoSys portions of such technology for
use in the manufacture of semiconductor devices of Licensee;

NOW, THEREFORE, IN CONSIDERATION OF THE FOREGOING AND THE MUTUAL COVENANTS
CONTAINED HEREIN, THE PARTIES AGREE AS FOLLOWS:

1. DEFINITIONS

For purposes of this Agreement the following terms shall have the meanings set
forth below:

1.1 "DESIGN" means any integrated circuit, integrated circuit mask, design
database or graphical representation of a design database containing
representations of the LICENSED PRODUCT or designed with data from the LICENSED
PRODUCT from MoSys in any of its various formats, including but not limited to:
circuit schematics, ASCII or binary data, logic diagrams, simulations models,
test vectors, physical layout, hardware description languages, timing
characteristics and netlists.

1.2 "MOSYS INTELLECTUAL PROPERTY" means any and all know-how, technical
information, trade secrets, patents and patent applications owned or controlled
by MoSys (a partial list of which is attached in Appendix F), which (i) MoSys
has the right to License, relating to memory architecture, protocol and circuit
implementation, and which (ii) are incorporated in the implementation of the
LICENSED PRODUCT by MoSys. The term "MOSYS INTELLECTUAL PROPERTY" does not
include any and all know-how, technical information, trade secrets and circuit
implementation which is (a) in the public domain, (b) known generally by persons
skilled in the art, (c) already in the rightful possession of Licensee or its
SUBSIDIARIES, (d) hereafter become available for use without license, (e) owned
or controlled by others, including but not limited to which relating to generic
DRAM processes, memory cells, capacitor fabrication and memory operations, (f)
hereafter becomes rightfully known to Licensee or its SUBSIDIARIES without
restriction or (g) subsequently developed independently by employees of Licensee
or its SUBSIDIARIES without access to the LICENSED PRODUCT.

* Marked items are omitted pursuant to a request for confidential treatment
  and filed with the Securities and Exchange Commission.

<PAGE>

1.3 "LICENSED INTEGRATED CIRCUIT" means (i) a single die in whole or in part
manufactured utilizing all or any portion of the LICENSED PRODUCT and/or (ii) a
single die in whole or in part made up of, incorporating or based upon any
portion of a DESIGN.

1.4 "LICENSED PRODUCT" means the data and related documentation of MoSys
embedded 1T-SRAM block as set forth in Appendix A and any UPDATES thereto in any
form.

1.5 "LICENSED SITE(S)" means the site(s) where Licensee and/or its SUBSIDIARIES
are authorized to utilize the LICENSED PRODUCT as set forth in Appendix C.

1.6 "UPDATE(S)" means any error correction or revision to the LICENSED PRODUCT
made by or for MoSys, which MoSys provides to Licensee under the maintenance as
described in Appendix D. UPDATES shall not include any new or additional
features, enhancements, or options which increase the basic functionality of the
LICENSED PRODUCT for which MoSys charges a separate or additional fee.

1.7 "NET SALES" means the gross sales amount invoiced or otherwise charged to
Licensee's customers for the LICENSED INTEGRATED CIRCUITS in finished and
package form, less amounts invoiced for returned goods for which a refund is
given. Net sales will also include the deduction for charges including, but not
limited to, insurance, handling, duty, freight and taxes.

1.8 "SUBSIDIARY(IES)" means a corporation or other legal entity in which at
least a majority of whose voting stock or voting power entitled to vote for the
election of directors (or other managing authority) is owned directly or
indirectly by Licensee. Such corporation or other legal entity shall be
considered as SUBSIDIARIES only so long as such ownership exists.

2. SCOPE OF WORK

2.1 The specifications of the LICENSED PRODUCTS for the Nintendo "Dolphin"
project (the "Project") under this Agreement shall be as outlined in Appendix A.

2.2 The development work of the LICENSED PRODUCTS for the Project under this
Agreement shall substantially follow the development plans set forth in Appendix
B.

2.3 If there occurs a situation under which the terms of this Agreement shall be
amended or supplemented, or it is necessary to agree upon additional terms for a
project other than the Project, the parties hereto will enter into good faith
negotiation for concluding a separate agreement for such amendment or supplement
of this Agreement or additional terms.

3. LICENSE GRANT AND RESTRICTED USE

3.1 Subject to the terms and conditions stated herein and the acceptance of the
LICENSED PRODUCT, MoSys grants to Licensee and its SUBSIDIARIES a
non-transferable, non-

                                       2
<PAGE>

exclusive, royalty-bearing, world-wide, limited license under MOSYS
INTELLECTUAL PROPERTY to use, have used, reproduce, have reproduced, modify and
have modified (to the extent effected by Section 3.2) the LICENSED PRODUCT for
the sole purpose of the design of LICENSED INTEGRATED CIRCUITS, and to
manufacture, have manufactured, use, have used, sell and otherwise distribute
said LICENSED INTEGRATED CIRCUITS. In addition, the Licensee agrees to promptly
inform MoSys in writing at the start of each development in which the LICENSED
PRODUCT will be embedded in a LICENSED INTEGRATED CIRCUIT for projects other
than the Project.

3.2 The modification right granted by MoSys under Section 3.1 above shall be
limited to changes of memory organization, size, density, porting to another
process and minor functional and timing modifications for enhancing the
manufacturability and performance of LICENSED INTEGRATED CIRCUITS and shall only
be made by employees of Licensee and its SUBSIDIARIES at the LICENSED SITES.
Licensee and its SUBSIDIARIES may use subcontractors in exercising the
modification right granted by MoSys under Section 3.1 above with a prior
approval of MoSys, which approval shall not be unreasonably withheld.

3.3 None of the LICENSED PRODUCT or portion thereof may be distributed except to
third party entities as needed to support the manufacturing of the LICENSED
INTEGRATED CIRCUIT. Except as specifically set forth herein, none of the
LICENSED PRODUCT may be disclosed to third parties or transferred outside of
LICENSED SITE(S).

3.4 Licensee acknowledges and agrees that unauthorized use of the LICENSED
PRODUCT which is not expressly authorized by this Section 3 is a breach of a
material obligation of this Agreement. In the event that unauthorized use of
LICENSED PRODUCT by Licensee, its SUBSIDIARIES, or its/their personnel or third
party entities occurs, and MoSys elects not to terminate this Agreement pursuant
to Section 10, Licensee shall by virtue of such act(s) be deemed to order and
accept a license for and shall pay MoSys the list price and applicable royalties
for each such unauthorized use of the LICENSED PRODUCT. These fees shall be
MoSys' published list prices and applicable royalties existing on the date such
unauthorized use first occurred. Such fees and applicable royalties shall be due
no later than thirty (30) days following mutual agreement of the parties with
respect to such unauthorized use.

3.5 Licensee shall mark all catalogues, brochures and other marketing material
used for the LICENSED INTEGRATED CIRCUITS with the MoSys trademark and copyright
notations that appear on or in the LICENSED PRODUCT. As for the LICENSED
INTEGRATED CIRCUITS for the Project, Licensee shall visibly mark each LICENSED
INTEGRATED CIRCUIT with said MoSys copyright notation, providing it is
reasonable and practical to do so but in any event at least to the same extent
that Licensee so marks its own copyright notations. However, the parties
acknowledge and agrees that, in the event that (i) Nintendo Co., Ltd. requests
Licensee not to mark such LICENSED INTEGRATED CIRCUIT with said MoSys copyright
notation or that (ii) the marking of said MoSys copyright notation is impossible
or reasonably impracticable, Licensee will not be required to mark such LICENSED
INTEGRATED CIRCUIT with said MoSys copyright notation under this Section 3.5.

                                       3
<PAGE>

3.6 MoSys strictly prohibits the use of the LICENSED PRODUCT in a LICENSED
INTEGRATED CIRCUIT that is designed and used primarily as a stand-alone memory
integrated circuit.

3.7 The licenses granted under this Section 3 are non-sublicenseable.

     4. SUPPORT CONDITION, SILICON DEBUGGING AND PRODUCT ENGINEERING

4.1 In consideration for the technical support and maintenance fees described in
Appendix D, MoSys will provide Licensee with the technical support and
maintenance described in Appendix D for the LICENSED PRODUCT after the
expiration of the warranty period as set forth in Section 13. Except as
expressly specified in this Agreement, such technical support and maintenance is
available on an annual basis only, and MoSys reserves the right to change the
technical support and maintenance fees upon prior notice for any subsequent
annual period.

4.2 The design and verification techniques for the LICENSED PRODUCT used by
MoSys depend on the accuracy of models, flows and design tools; some of which
are provided by MoSys' licensees and their target foundries. Due to practical
limits on the accuracy of these models, flows and design tools, the fabricated
silicon behavior may not always agree with that predicted. In these cases, MoSys
will assist Licensee in silicon debugging and product engineering provided that
Licensee agrees to pay mutually agreed fees to MoSys within thirty (30) days
after the receipt of a relevant invoice to be issued by MoSys. Silicon debugging
and associated product engineering does not fall under the technical support and
maintenance set forth in Section 4.1 above. To the extent MoSys provides any
silicon debugging or product engineering, or otherwise provides Licensee or its
SUBSIDIARIES with any revisions and/or enhancements to the LICENSED PRODUCT,
except as otherwise agreed upon, such revisions and/or enhancements shall be the
LICENSED PRODUCT and subject to the terms and conditions of this Agreement.

5. TERM

This Agreement is effective as of the Effective Date and shall remain in full
force and effect for a period of five (5) years, unless earlier terminated as
provided in this Agreement. Unless earlier terminated as provided in this
Agreement, this Agreement will automatically renew at the end of each term for
consecutive one (1) year renewal periods, unless either party notifies the other
at least sixty (60) days prior to the end of the then current term that it does
not desire the Agreement to renew for another year.

6. CHANGES

6.1 Except as otherwise agreed by both parties in writing, all LICENSED PRODUCTS

                                       4
<PAGE>

provided to Licensee by MoSys during the term of this Agreement will be subject
to the terms and conditions of this Agreement.

6.2 Changes to the scope of work either requested by and/or necessitated by
Licensee's specifications will be evaluated for both schedule and cost impact.
The Licensee will be asked to complete an Engineering Change Order Request Form,
an "ECO" and submit it to MoSys for review. If after review by MoSys, it is
determined that both the schedule and/or quoted sales prices must change to
accommodate the ECO, MoSys will notify the Licensee in writing on our ECO
Response Form of any such schedule and/or price changes. Licensee must provide
written acceptance or refusal of the new schedule and/or costs within ten (10)
working days of Licensee's receipt of such notice. Failure to do so will cause
MoSys to proceed with the project as if the "Licensee" ECO Request Form had
never been received. Sample ECO Request and ECO Response Forms are attached as
Exhibits A and B.

7. COMPENSATION

7.1 Except as expressly provided herein, all payments made by Licensee to MoSys
hereunder shall be non-refundable and non-creditable.

7.2 In consideration of the development work of the LICENSED PRODUCT and the
rights and licenses granted to Licensee and its SUBSIDIARIES under this
Agreement Licensee shall pay to MoSys the amounts as set forth in Appendix E in
accordance with the payment schedule as set forth in Appendix E. The foregoing
provisions of this Section 7.2 shall not limit the provisions of Section 3.4
above. Each installment of Prepaid Royalties shall be due within thirty (30)
days after receipt by Licensee of a relevant invoice to be issued by MoSys after
the completion of each milestone as set forth in Appendix E. Prepaid Royalties
may be used to offset against future Royalties of any LICENSED PRODUCT for the
Project due under this Agreement.

7.3 In consideration of the rights and licenses granted to Licensee and its
SUBSIDIARIES under this Agreement, Licensee shall pay to MoSys the running
royalty as set forth in Appendix E and expressed as a percentage of the NET
SALES of all LICENSED INTEGRATED CIRCUITS sold directly or indirectly by
Licensee and/or its SUBSIDIARIES. In the event that LICENSED INTEGRATED CIRCUITS
are sold in circumstances in which the selling price is established other than
on an arms-length basis or as a portion of a bundled products, the NET SALES for
each such integrated circuit shall be calculated based on the volume of such
integrated circuit multiplied by the average gross selling price earned by
Licensee and/or its SUBSIDIARIES during such quarter on sales of that integrated
circuit in finished and packaged form in arms-length sales transactions. If
there are no such arms-length sales transactions, then the parties shall use
such average gross selling price of integrated circuits in finished and packaged
form with similar functionality. It is understood and agreed by the parties
that, at most, only one royalty shall be payable with respect to each LICENSED
INTEGRATED CIRCUIT. The parties agree that no royalty shall accrue for any
LICENSED INTEGRATED CIRCUITS shipped as a replacement for defective LICENSED
INTEGRATED CIRCUITS or furnished by

                                       5
<PAGE>

Licensee and/or its SUBSIDIARIES for small quantity sample shipments without
charge to their customers.

7.4 Within thirty (30) days after the expiration of the warranty period
described in Section 13, Licensee further shall pay to MoSys the technical
support and maintenance fees set forth in Appendix E to cover the initial twelve
(12) month period after the expiration of the warranty period. The technical
support and maintenance fees for subsequent twelve (12) month periods under this
Agreement shall be due within thirty (30) days after the beginning of each such
twelve (12) month period.

8. PAYMENT TERMS AND TAXES

8.1 All invoices will be mailed to Licensee's address specified in Section 20,
unless specified otherwise by Licensee.

8.2 Within [*] days after the end of each calendar quarter, Licensee shall pay
to MoSys the running royalties set forth in Section 7.3 and Appendix E with
respect to the LICENSED INTEGRATED CIRCUITS manufactured and sold in such
calendar quarter, and shall submit to MoSys with such royalty payment a
report stating the number for each LICENSED INTEGRATED CIRCUIT manufactured
and sold during such calendar quarter and the applicable running royalties
payable hereunder for such calendar quarter; and all reasonably necessary
data and supporting calculations used by Licensee and/or its SUBSIDIARIES to
compute the running royalties payable by Licensee to MoSys with respect to
such calendar quarter.

8.3 Any and all amounts payable hereunder do not include any government taxes
(including without limitation sales, use, excise, and value added taxes) or
duties imposed by any governmental agency that are applicable to the export,
import, or purchase of the Products (other than taxes on the net income of
MoSys), and Licensee shall bear all such taxes and duties. When MoSys has a
current or subsequent legal obligation to collect and/or pay such taxes, the
appropriate amount shall be added to Licensee's invoice and paid by Licensee,
unless Licensee provides MoSys with a valid tax exemption certificate authorized
by the appropriate taxing authority.

8.4 All payments by Licensee specified hereunder are expressed as net amounts
and shall be made free and clear of, and without reduction for, any withholding
taxes. Any such taxes which are otherwise imposed on payments to MoSys shall be
the sole responsibility of Licensee. If any applicable law requires Licensee to
withhold amounts from any payments to MoSys hereunder, (i) Licensee shall effect
such withholding, remit such amounts to the appropriate taxing authorities and
promptly furnish MoSys with tax receipts evidencing the payments of such
amounts, and (ii) the sum payable by Licensee upon which the deduction or
withholding is based shall be increased to the extent necessary to ensure that,
after such deduction or withholding, MoSys receives and retains, free from
liability for such deduction or withholding, a net amount equal to the amount
MoSys would have received and retained in the absence of such required

                                       6
<PAGE>

deduction or withholding. In the event that MoSys receives a reduction in tax
due or rebate from any tax authority directly due to the amount withholding tax
paid by Licensee, it will reimburse Licensee such amount that it has had reduced
or received from the tax authority.

8.5 With respect to LICENSED INTEGRATED CIRCUITS and non-recurring engineering
fees, royalties and other amounts which are payable to MoSys under this
Agreement, as a material condition to this Agreement, Licensee shall keep
complete and accurate books and records, to the extent reasonably necessary for
MoSys to ascertain the accuracy of the royalty reports to be furnished
hereunder. These books and records shall be retained for a period of three (3)
years from the date of the last day of each calendar quarter period,
notwithstanding the expiration or termination of this Agreement. As a material
condition to this Agreement, Licensee agrees to permit these books and records
to be examined by an independent firm, experienced in conducting such an
exercise, designated by MoSys and approved by Licensee (such approval shall not
be unreasonably withheld), subject to the confidentiality provisions set forth
in this Agreement and at a time and place convenient to both parties, but during
normal business hours and not more frequently than annually, to verify the
accuracy of royalties and other amounts paid to MoSys under this Agreement.
Adjustment shall be made by Licensee corresponding to the net amount of any
underpayment of any and all royalties and other amounts disclosed by such
examination within thirty (30) days after Licensee's receipt of a relevant
invoice issued by MoSys therefor. The net amount of any overpayment of any and
all royalties and other amounts disclosed by such examination shall be credited
by MoSys against subsequent royalties to be paid by Licensee to MoSys. If such
an examination reveals an underpayment of more than five percent (5%), then
Licensee shall promptly reimburse MoSys for the cost of such examination.

8.6 All payment amounts stated hereunder, and all payments to be made hereunder,
shall be in U.S. Dollars and shall be transmitted by telegraphic transfer to
MoSys' bank account designated by MoSys in writing in advance. If any currency
conversion shall be required in connection with the calculation of amounts
payable under this Agreement, such conversion shall be made using the TTS rate
for conversion of the foreign currency into U.S. Dollars, published by the Bank
of Tokyo-Mitsubishi, Ltd. for the last business day of the calendar quarter to
which such payment pertains.

9. EXPORT RESTRICTIONS

This Agreement, the LICENSED PRODUCT(S) and the rights granted hereunder are
subject to any and all laws, regulations, orders or other restrictions relative
to export, re-export or redistribution of the LICENSED PRODUCT(S) that may now
or in the future be imposed by the government of the United States or foreign
governments. Licensee agrees to comply with all such applicable laws and
regulations.

10. TERMINATION

                                       7
<PAGE>

10.1 (a) If either party defaults in the performance of any material obligation
hereunder and if any such default is not corrected within forty-five (45) days
after the defaulting party receives written notice thereof from the
non-defaulting party, then the non-defaulting party, at its option, may, in
addition to any other remedies it may have, terminate this Agreement. For the
purposes of this section, each of Licensee's obligations pursuant to Sections 3,
7 and 8 above and each of MoSys' obligations pursuant to Sections 2,4,13 and 14
and both parties obligations pursuant to Section 16 shall be considered
material.

     (b) Either party may terminate this Agreement effective upon receipt of
written notice by the other party in the event that the other party becomes the
subject of a voluntary or involuntary petition in bankruptcy or any proceeding
relating to insolvency, or the assignment for the benefit of creditors, if that
petition or proceeding is not dismissed within ninety (90) days after filing.

10.2 Upon any termination or expiration of this Agreement, all licenses and
rights granted by MoSys shall terminate, and Licensee shall promptly destroy or
deliver to MoSys all materials comprising, incorporating, or using any MOSYS
INTELLECTUAL PROPERTY or any LICENSED PRODUCTS, provided, however, that if this
Agreement expires or is terminated by Licensee under the terms of Section 10.1,
Licensee's license under Section 3.1 shall continue strictly limited to products
which Licensee or its SUBSIDIARIES had started in the manufacturing process
prior to the effective date of termination and strictly subject to continuing
compliance with all the surviving Sections of this Agreement. Licensee shall
have no right pursuant to the preceding clause to develop new products. In
addition, all amounts due or payable to MoSys as a result of events prior to the
date of termination or expiration shall remain due and payable.

10.3 The provisions of Sections 3 (except for Section 3.1), 7.1, 7.3, 8, 9,
10.2, 10.3, 12, 14, 15, 16 (except for Section 16.1), 17, 18, 19, and 21, 22, 23
and 24 shall survive any expiration or termination of this Agreement for any
reason.

                                       8
<PAGE>

11 LICENSEE'S RIGHT TO TERMINATE

In the event of problems arising during acceptance procedures of the LICENSED
PRODUCT, both parties shall, in good faith, work to resolve such problems. If
such problems can not be resolved, after both parties have used reasonable
efforts, the Licensee has the right to terminate this Agreement by written
notice. In addition, for the Project only, in the event that Nintendo Co., Ltd.
chooses not to use Licensee as the supplier of ASIC integrated circuits for the
Project, Licensee has the right to terminate this Agreement before acceptance of
the LICENSED PRODUCT by written notice. The termination shall be effective upon
receipt by MoSys of such notice. Licensee shall pay MoSys as Licensee's entire
liability for such termination, the total costs actually incurred by MoSys after
any previous payment up to such termination, plus a reasonable profit. Such
total costs and reasonable profit shall be provided by Mosys and approved by
Licensee. In no event, however, shall the amount of such total costs and
reasonable profit exceed the total amount of pre-paid royalties, less the amount
of pre-paid royalties already paid by Licensee to MoSys up to such termination.

12. RIGHT TO DESIGN AND METHODS

12.1 Licensee and MoSys agree that, subject to MoSys's ownership of the LICENSED
PRODUCT, Licensee shall retain all of its ownership rights to DESIGNS created
through the utilizing of the LICENSED PRODUCT.

12.2 Licensee and MoSys agree that MoSys shall retain all rights to the LICENSED
PRODUCT. Licensee agrees that MoSys will have the irrevocable royalty-free right
to use in the LICENSED PRODUCT, and any other products offered or distributed by
MoSys, any Licensee contribution or voluntarily disclosed information provided
to MoSys in the course of Licensee (i) requesting changes or modifications to
the LICENSED PRODUCT, (ii) making suggestions for improvements to the LICENSED
PRODUCT, or (iii) suggesting how to correct any identified deficiencies in the
LICENSED PRODUCT.

                                   13 WARRANTY

13.1 MoSys warrants that the deliverables furnished hereunder shall
substantially conform to the applicable specifications, drawings and other
technical requirements.

13.2 The warranty under Section 13.1 above shall run for a period of ninety (90)
days from the date of acceptance by Licensee of the deliverables and shall be in
addition to any other rights or remedies available to Licensee.

13.3 Licensee shall have the right at any time during the period of this
warranty, and irrespective of prior acceptances, to reject any deliverables not
conforming to the above warranty

                                       9
<PAGE>

and require that MoSys, at its expense, correct or replace, at Licensee's
option, such deliverables with conforming deliverables.

13.4 With respect to any defect of the deliverables not covered by the warranty
provided for in this Section 13, MoSys agrees, upon Licensee's request, to
correct or repair such defect at a mutually agreed fee to be paid by Licensee to
MoSys.

13.5 MoSys warrants that MoSys is a corporation duly organized, validly existing
and in good standing under the laws of the state of California. MoSys has full
capacity, power and authority to enter into this Agreement and to carry out the
transactions contemplated by this Agreement. This Agreement has been duly
authorized, executed and delivered by MoSys and is a legal, valid and binding
agreement enforceable in accordance with its terms.

13.6 MoSys warrants that MoSys owns all rights, title and interest in and to all
MOSYS INTELLECTUAL PROPERTY to be furnished or licensed to Licensee and its
SUBSIDIARIES. With respect to those owned by licensors of MoSys, if any, MoSys
has the right to sublicense to Licensee and its SUBSIDIARIES.

13.7 MoSys warrants that the execution, delivery and performance of this
Agreement by MoSys shall not (i) result in the breach of, or constitute a
default under, any contract or other instrument or obligation applicable to
MoSys, (ii) result in the breach of any of the terms or conditions of, or
constitute a default under, the charter, bylaws or other governing instruments
of MoSys, or (iii) violate any order, writ, injunction, decree, or any statute,
rule or regulation applicable to MoSys.

14.   INTELLECTUAL PROPERTY OWNERSHIP AND INDEMNIFICATION

14.1 MoSys shall own all rights, title interest in the LICENSED PRODUCT licensed
under this Agreement including any and all upgrades, enhancements and
improvements thereto made by MoSys. MoSys will also retain all patent rights,
trademarks, trade secrets, copyrights, mask work rights and all other
proprietary rights therein or relating thereto. Except for the licenses granted
in Section 3, no other grants of licenses or rights to Licensee and its
SUBSIDIARIES shall be implied from the provisions stated herein.

14.2 MoSys represents and warrants as of the Effective Date:
     (a) to the best of MoSys' knowledge, it is the originator and/or rightful
     owner of the product(s), information and documentation provided to Licensee
     pursuant to the terms of this Agreement (hereinafter collectively
     "Information"); and
     (b) to the best of MoSys' knowledge, there are no claims pending or
     threatened against MoSys or any other party, that relate to the Information
     or the contemplated use of the Information under this Agreement.

14.3 Except as expressly provided herein, MoSys disclaims and shall have no
obligation of defense, contribution, or indemnity with respect to any actual or
alleged intellectual property

                                       10
<PAGE>

infringement with respect to the Information provided or otherwise arising out
of this Agreement. MoSys shall have no liability arising out of any such actual
or alleged intellectual property infringement. Licensee, however, will use its
reasonable efforts to notify MoSys, in writing, of each such infringement claim
of which Licensee becomes aware, and Licensee shall cooperate with MoSys if
MoSys desires to intervene in any such infringement action against Licensee.

14.4 In the event of any claim by a third party of infringement of its
intellectual property rights by the Licensee and/or its SUBSIDIARIES where such
claim (i) is caused substantially by the unmodified LICENSED PRODUCT and, (ii)
is not associated with standard DRAM operations, processes, design or
manufacturing then MoSys agrees to use reasonable efforts at MoSys' expense to
provide assistance, including appropriate documentation, to Licensee, in its
defense against such claim under this provision. If pursuant to such a claim
Licensee and/or its SUBSIDIARIES is prohibited from using the LICENSED PRODUCTS,
MoSys agrees to use reasonable efforts to modify the LICENSED PRODUCTS to avoid
the infringement.

14.5 The foregoing states MoSys' sole obligations and entire liability with
respect to any claimed infringement of the LICENSED PRODUCT(S) of any
intellectual property or other rights of any third party.

15. LIMITATION OF LIABILITY

IN NO EVENT WILL MOSYS' LIABILITY ARISING OUT OF THIS AGREEMENT EXCEED THE FEES
AND ROYALTIES RECEIVED BY MOSYS' HEREUNDER. EXCEPT FOR INFRINGEMENT OF THE OTHER
PARTY'S INTELLECTUAL PROPERTY RIGHTS, IN NO EVENT SHALL EITHER PARTY BE LIABLE
FOR ANY SPECIAL, CONSEQUENTIAL, INDIRECT OR INCIDENTAL DAMAGES, HOWEVER CAUSED,
ON ANY THEORY OF LIABILITY AND WHETHER OR NOT SUCH PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES, ARISING OUT OF THIS AGREEMENT OR THE DESIGNS,
TECHNOLOGY OR PRODUCT LICENSED OR OTHERWISE PROVIDED PURSUANT TO THIS AGREEMENT.

16. PUBLICITY; CONFIDENTIALITY

16.1 Both parties agree to cooperate in good faith announcements and disclosures
after the execution of this Agreement that includes (a) Licensee is a customer
of MoSys, and (b) MoSys has provided the LICENSED PRODUCT to Licensee and that
the LICENSED PRODUCT was used in the development of the LICENSED INTEGRATED
CIRCUIT, and (c) a product description of the LICENSED PRODUCT as contained in
MoSys' standard product literature. Neither party shall announce or publicly
disclose any other terms or conditions of this Agreement without a prior written
approval from the other party. An initial public announcement plan and contents
are attached in Appendix G.

                                       11
<PAGE>

16.2 The parties acknowledge that by reason of their relationship to each other
hereunder, each party may have access to the other party's Confidential
Information. For the purposes of this Section 16, the term "Confidential
Information" shall mean any and all information and materials which are provided
by one party to the other party (i) in written or other tangible form clearly
marked with a legend identifying it as "Confidential" or "Proprietary" or (ii)
in oral or visual form identified as "Confidential" or "Proprietary" at the time
of such oral or visual disclosure and within thirty (30) days following such
oral or visual disclosure the summary of which is provided to the other party in
written or other tangible form marked with such legend. Each party agrees that
except as may otherwise be stated herein, it shall not use, except to perform
its obligations and/or to exercise its rights and licenses specified under this
Agreement, nor disclose to any third party (except to Nintendo Co., Ltd., ArtX,
Inc. and independent contractors and affiliates (including SUBSIDIARIES) who are
under an obligation of confidentiality, and subject to the other terms and
conditions of this Agreement), any such Confidential Information revealed to it
by the other party. Each party shall take reasonable precautions to protect the
confidentiality of such information, which in any event will be no less than
what it takes with respect to its own similar confidential information.

16.3 Information shall not be deemed Confidential Information hereunder if such
information: (i) is known to the recipient at the time of disclosure; (ii)
hereafter becomes rightfully known (independently of disclosure by the
disclosing party) to the recipient directly or indirectly from a third party
without such third party imposing an obligation of confidentiality on the
disclosing party; (iii) becomes publicly available or otherwise ceases to be
secret or confidential, except through a breach of this Agreement by the
recipient; (iv) was independently developed by the recipient without access to
the disclosing party's Confidential Information; (v) is required to be disclosed
pursuant to any statutory or regulatory authority, provided the disclosing party
is given prompt notice of such requirement and the scope of such disclosure is
limited to the extent possible; (vi) is required to be disclosed by a court
order, provided the disclosing party is given prompt notice of such order and
provided the opportunity to contest it, and/or is reasonably necessary to
disclose in order to enforce this Agreement; or (vii) is residual information in
the minds of employees having had access to Confidential Information (provided
not deliberately memorized) after a period of five years.

Notwithstanding any of the foregoing, Licensee agrees not to disclose any
Confidential Information of Licensee to MoSys unless MoSys requests disclosure
of such information in writing.

16.4 As to each item of Confidential Information, the provisions of this Section
will continue for three (3) years following first receipt of such information,
except for the LICENSED PRODUCT, for which the provisions of this Section will
continue for five (5) years following any termination or expiration of this
Agreement.

17. GOVERNING LAW

                                       12
<PAGE>

This Agreement shall be governed by and construed in accordance with the laws of
the State of California, without regard to the conflict of laws provisions
thereof.

                              18 DISPUTE SETTLEMENT

18.1 In the event of any dispute, controversy or difference which may arise
between the parties hereto out of or in connection with or in relation to this
Agreement, or the breach thereof, the parties hereto shall in the first instance
do their utmost to settle such dispute, controversy or difference amicably.

18.2 Where the parties hereto fail to settle such dispute, controversy or
difference amicably within ten (10) working days of the written notice of its
existence given by either party to the other party, then the dispute,
controversy or difference shall be finally settled by arbitration in Santa
Clara, California, U.S.A. in accordance with the Rules of Conciliation and
Arbitration of the International Chamber of Commerce. The award of arbitration
shall be final and binding upon the parties hereto and shall not be subject to
appeal to any court, and may be entered into the court of competent jurisdiction
for its execution forthwith.

19. ASSIGNMENT

Neither this Agreement nor any rights or obligations hereunder, in whole or in
part, shall be assignable or otherwise transferable by either party without the
prior written approval of the other party. Any unauthorized attempt by either
party to assign or transfer this Agreement or any rights or obligations
hereunder shall be null and void. Subject to the foregoing, this Agreement will
be binding upon and inure to the benefits of the parties hereto, their
successors and assigns.

20. NOTICE

Any notices required to be given pursuant to this Agreement shall be in writing,
sent via certified mail, return receipt requested, express overnight courier, or
by facsimile (a confirmed copy of which to be sent promptly by mail to
addressee) to the address of MoSys or Licensee as set forth below or to such
other address as may be specified from time to time by notice in writing, and
such notice shall be deemed to have been received on the earlier of (a) the date
when actually received or (b) if by facsimile, when the sending party shall have
received a facsimile, when the sending party shall have received a facsimile
confirmation that the message has been received by the receiving party's
facsimile machine.

If to MoSys:   MoSys, Inc.
               1020 Stewart Drive
               Sunnyvale, CA 94086, U.S.A.
               Attn:  Chief Financial Officer

                                       13
<PAGE>

               Telephone: +1 (408) 731-1800
               Facsimile: +1 (408) 731-1893

               If to Licensee: NEC Corporation
               1753, Shimonumabe,
               Nakahara-ku, Tokyo 108-8422, Japan
               Attn:  Mr. Eikichi Wakamatsu
               Telephone: +81 (44) 435-1490
               Facsimile: +81 (44) 435-1887

21. SEVERABILITY AND WAIVER

21.1 The invalidity or unenforceability of any particular provision of this
Agreement shall not affect the other provisions of this Agreement and shall be
construed in all respects as if such invalid or unenforceable provisions were
omitted.

21.2 The waiver by either party of any default or breach of this Agreement shall
not constitute a waiver of any other subsequent default or breach.

21.3 Failure or delay by either party in exercising any right or power hereunder
shall not operate as a waiver of such right or power.

22. INHERENTLY DANGEROUS APPLICATIONS

The LICENSED PRODUCT is not specifically developed or licensed for use in the
planning, construction, maintenance, operation or other use of any nuclear
facility, or for the flight, navigation or communication of aircraft or ground
support equipment, or for military use, medical use or in any other inherently
dangerous activity. Licensee agrees that MoSys shall not be liable for any
claims, losses, costs or liabilities arising from such use if Licensee, its
SUBSIDIARIES, or its/their distributors or customers use the LICENSED PRODUCT
for such applications. Licensee agrees to indemnify and hold MoSys harmless from
any claims, losses, costs, and liabilities arising out of or in connection with
the use of the LICENSED PRODUCT or LICENSED INTEGRATED CIRCUITS in any such
applications.

23. ATTORNEYS FEES

The prevailing party in any action to enforce the terms of this Agreement shall
be entitled to reasonable attorney's fees and other costs and expenses incurred
by it in connection with such action.

24. MISCELLANEOUS TERMS

                                       14
<PAGE>

24.1 The relationship of the parties hereto is that of independent contractors,
and neither party is an employee, agent, partner or joint venturer of the other.

24.2 Neither party shall have liability for its failure to perform its
obligations hereunder when due to circumstances beyond its reasonable control.

24.3 If Licensee and/or its SUBSIDIARIES distribute the LICENSED INTEGRATED
CIRCUIT, as authorized herein, to an agency, department, or other entity of the
United States Government ("Government"), the Government's use, reproduction,
release, modification, disclosure or transfer of the LICENSED PRODUCT, or of any
related documentation of any kind, including technical data, is restricted in
accordance with Federal Acquisition Regulation ("FAR") 12.212 for civilian
agencies and Defense Federal Acquisition Regulation Supplement ("DFARS";)
227.7202 for military agencies. The LICENSED PRODUCT is intended for commercial
use. The use of the LICENSED PRODUCT by any Government agency, department, or
other entity of the Government, is further restricted in accordance with the
terms of this Agreement, or any modification hereto. Licensee will affix the
following legend before delivery to the Government of each of the Models and
User Documentation and/or Physical Views to be delivered to the Government:

Use, duplication, reproduction, release, modification, disclosure or transfer of
this commercial product and accompanying documentation, is restricted in
accordance with FAR 12.212 and DFARS 227.7202, and by a license agreement.
Contractor/manufacturer is: MoSys, Inc., 1020 Stewart Drive, Sunnyvale,
California 94086 U.S.A.

                                       15
<PAGE>

BOTH PARTIES ACKNOWLEDGE THAT THIS AGREEMENT INCLUDING THE EXHIBITS AND
APPENDICES ATTACHED HERETO IS THE COMPLETE AND EXCLUSIVE STATEMENT OF THE MUTUAL
UNDERSTANDING OF THE PARTIES AND SUPERSEDES AND CANCELS ALL CONFLICTING TERMS
AND CONDITIONS AND ALL PREVIOUS AND CONTEMPORANEOUS WRITTEN AND ORAL AGREEMENTS
AND COMMUNICATIONS RELATING TO THE SUBJECT MATTER HEREOF. THIS AGREEMENT MAY NOT
BE MODIFIED, SUPPLEMENTED, QUALIFIED, OR INTERPRETED BY ANY TRADE USAGE OR PRIOR
COURSE OF DEALING NOT MADE A PART OF THIS AGREEMENT BY ITS EXPRESS TERMS. THIS
AGREEMENT MAY NOT BE MODIFIED OR AMENDED EXCEPT IN WRITING AND EXECUTED BY DULY
AUTHORIZED REPRESENTATIVES OF BOTH PARTIES.

BOTH PARTIES ACKNOWLEDGE THAT THEY HAVE READ THIS AGREEMENT, UNDERSTAND IT AND
AGREE TO BE BOUND BY ITS TERMS AND CONDITIONS AS EVIDENCED BY THEIR SIGNATURES
BELOW.

MOSYS, INC.                                 NEC CORPORATION

By:                                         By:
   ------------------------------------     ------------------------------------
  Signature of an Officer of                Signature of an Authorized
  the Corporation                           Representative

By:     Dr. Fu-Chieh Hsu                    By:
---------------------------------------     ------------------------------------
Printed Name of the Signing Officer         Printed Name of the Signing
                                            Authorized Representative

Title:  Chief Executive Officer             Title:
---------------------------------------     ------------------------------------

Date:    January 29, 1999                   Date:
---------------------------------------     ------------------------------------

                                       16
<PAGE>

                                    EXHIBIT A

                            ENGINEERING CHANGE ORDER

                               (ECO) REQUEST FORM

--------------------------------------------------------------------------------
Customer:                                            Date:

--------------------------------------------------------------------------------
Requestor:                                           Phone:

--------------------------------------------------------------------------------
E-mail Address:                                      Fax:

--------------------------------------------------------------------------------
Project:

This Engineering Change Order Form (ECO) is to be used as an official
notification to MoSys of any changes in design or specification made to a
project. Once this form has been received, MoSys will evaluate the schedule and
cost impacts of these changes and inform you of the results.

Description of Requested Change:

Requestor's Signature:                                        Date:

---------------------------------------                       ------------------

Engineering Manager's Approval:                               Date:

---------------------------------------                       ------------------

<PAGE>

                                    EXHIBIT B

                            ENGINEERING CHANGE ORDER

                               (ECO) RESPONSE FORM

--------------------------------------------------------------------------------
Customer:                                      Date:

--------------------------------------------------------------------------------
Requestor:                                     Phone:

--------------------------------------------------------------------------------
E-mail Address:                                Fax:

--------------------------------------------------------------------------------
Project:

MoSys has evaluated your attached ECO request, its impact on your schedule and
any additional charges associated with the request. This evaluation is described
below:

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

In summary, this change will:

[_] Add ______ working days to the schedule    [_] Will not impact the schedule

[_] Require an increase/decrease in the cost   [_] Will not require any addition
      of your project of $____________             charges

<PAGE>

Please sign this form to acknowledge that you understand the impact of your

requested changes.  Signing the Refusal indicates that you DO NOT authorize

MoSys to proceed with the requested change(s). Signing the Acceptance authorizes

MoSys to proceed with these changes. If additional costs are indicated, then the

buyer's signature is required. This form must be signed and returned to MoSys by

-------------------.

Requestor's REFUSAL:                                 Date:

-----------------------------------------------      -------------------------

Requestor's ACCEPTANCE:                              Date:

-----------------------------------------------      -------------------------

Buyer's Approval:                                    Date:

-----------------------------------------------      -------------------------

<PAGE>

LICENSE AGREEMENT

         APPENDIX A

[*] SPECIFICATIONS OF LICENSED PRODUCTS FOR THE PROJECT
    CUSTOMIZED 1T-SRAM CORE SPECIFICATIONS:

<PAGE>

LICENSE AGREEMENT

         APPENDIX B

         DEVELOPMENT OF THE LICENSED PRODUCT FOR THE PROJECT

1.       DEVELOPMENT

                  1.1 MoSys shall perform the development work ("WORK") of the
LICENSED PRODUCT for the Project conforming to the specifications as outlined in
Appendix A (which may be revised by mutual agreement between the parties) in
accordance with the following development schedule and responsibilities.

                  1.2 MoSys agrees that it will faithfully comply with all
reasonable instructions and requests of Licensee in connection with the
performance of the WORK hereunder. Licensee shall provide to MoSys at the start
of the development, detailed process design rules, process, device, parasitic
and other relevant parameters and procedures and all guidelines, including, but
not limited to, design, simulation and layout, that Licensee shall use in
accordance with its Acceptance criteria and procedures.

2.       DELIVERY

                  2.1 MoSys shall complete and deliver the following
deliverables to Licensee in accordance with the following development schedule,
which may be revised by mutual agreement between the parties.

                  2.2 Except as specified explicitly below, all the delivery of
the MoSys deliverables shall be made at the mutually agreed place of delivery.

3.       ACCEPTANCE

                  3.1 Acceptance of the WORK shall be in accordance with the
applicable requirements of this Agreement. Upon each delivery to the Licensee of
the MoSys deliverables, Licensee shall conduct acceptance procedures and shall,
within one (1) week of said delivery either accept the same or notify MoSys of
those particulars in which the deliverables do not meet the requirements of this
Agreement. If no notification of rejection is received by MoSys within two (2)
weeks of delivery of the deliverables, such deliverables shall be deemed
accepted by Licensee on the expiration date of said two (2) week period. Upon
remedy of particulars in which the deliverables do not meet the requirements of
this Agreement, the MoSys deliverables shall be accepted by Licensee.

                  3.2 Remedy of any particulars referred to in Section 3.1 of
this Appendix B shall be accomplished by MoSys at its own expense within a time
period to be mutually agreed by the parties. If MoSys fails to remedy any such
particular within such period of time, Licensee may elect to have such remedy
effected through other means, in which event MoSys

<PAGE>

shall pay the reasonable costs of so remedying such particular.

4.       TARGET SCHEDULE, DELIVERABLES & RESPONSIBILITIES

DEVELOPMENT SCHEDULE

<TABLE>
<CAPTION>
--------- -------------------- ------------------------------------------------------------------------------
No.       Target Date*         WORK
--------- -------------------- ------------------------------------------------------------------------------
<S>       <C>                  <C>
1         T                    Signing of Agreement and receipt by MoSys of process design rules & models.
--------- -------------------- ------------------------------------------------------------------------------
2         T + 1 Month          Mutually Agreed Specification
--------- -------------------- ------------------------------------------------------------------------------
3         T + 3 Months         Design and Simulation Review at MoSys
--------- -------------------- ------------------------------------------------------------------------------
4         T + 3.5 Months       MoSys Testchip tapeout and layout review
                               MOSYS DELIVERABLES: GDS2 for Frame-Buffer Core, Verilog simulation model,
                               Synopsys timing model
--------- -------------------- ------------------------------------------------------------------------------
5         T + 4 Months         Licensee Testchip tapeout and review
--------- -------------------- ------------------------------------------------------------------------------
6         T + 7 Months         Licensee Testchip samples available
--------- -------------------- ------------------------------------------------------------------------------
7         T + 8 Months         MoSys Testchip evaluation Review & Frame Buffer Revision Tapeout
--------- -------------------- ------------------------------------------------------------------------------
8         T + 8 Months         Texture Buffer Core Design Review at MoSys
--------- -------------------- ------------------------------------------------------------------------------
9         T + 9 Months         MoSys final Frame-Buffer Core delivery and Review
                               MOSYS DELIVERABLES: GDS2 for Frame-Buffer Core, Verilog simulation model,
                               Synopsys timing model
--------- -------------------- ------------------------------------------------------------------------------
10        T + 9 Months         MoSys Texture Buffer core Delivery and Review
                               MOSYS DELIVERABLES: GDS2 for Texture-Buffer Core, Verilog simulation model,
                               Synopsys timing model
--------- -------------------- ------------------------------------------------------------------------------
11        T + 10 Months        Licensee full chip tapeout and review
--------- -------------------- ------------------------------------------------------------------------------
12        T + 12 Months        Licensee full chip samples available
--------- -------------------- ------------------------------------------------------------------------------
</TABLE>

* "T" represents the date of signing of this Agreement.

<PAGE>

LICENSE AGREEMENT

         APPENDIX C

                                LICENSED SITE(S)

                     a._______________________________________

                     b._______________________________________

                     c._______________________________________

                     d._______________________________________

<PAGE>

LICENSE AGREEMENT

         APPENDIX D

                        TECHNICAL SUPPORT AND MAINTENANCE

                                  TO BE AGREED.

<PAGE>

LICENSE AGREEMENT

                                   APPENDIX E

         NON-RECURRING ENGINEERING FEES, ROYALTIES AND TECHNICAL SUPPORT AND
         MAINTENANCE FEES

I.   Nintendo products

A.   Prepaid Royalties
         [*] per LICENSED PRODUCT core designed. Payment of prepaid royalty to
         be as follows:

                           Start of design                    50%
                           MoSys Tape Out                     25%
                           Acceptance                         25%

         Up to two (2) Prepaid Royalties payments may be used to offset any
         Nintendo product Royalties due under this License Agreement. In
         addition, the Non-Recurring Engineering charges (NRE) for any core
         designs beyond the first two (2) to be mutually agreed before the start
         of the design.

B.  Royalties
         Licensee further shall pay to MoSys the following running royalties:

         Shipments of LICENSED PRODUCT            Royalty
         First [*]                           [*] of Licensee's and/or its
                                             SUBSIDIARIES net sales generated by
                                             the sale of LICENSED INTEGRATED
                                             CIRCUITS
         All unit shipments thereafter       [*] of Licensee's and/or its
                                             SUBSIDIARIES net sales generated by
                                             the sale of LICENSED INTEGRATED
                                             CIRCUITS

         Royalties due under this provision may be offset by any unamortized
         Prepaid Royalty payments.

II.      Non-Nintendo products

A.       Non-recurring Engineering Charges (NRE)

         The Non-Recurring Engineering charges (NRE) for any core designs to be
         mutually agreed before the start of the design.

<PAGE>

B.       Royalties
         Licensee further shall pay to MoSys the following running royalties:

         Shipments of LICENSED PRODUCT               Royalty

         All unit shipments                  [*] of Licensee's and/or its
                                             SUBSIDIARIES net sales generated by
                                             the sale of LICENSED INTEGRATED
                                             CIRCUITS
         No royalties due under this provision may be offset by any unamortized
         Prepaid Royalty payments.

III.     Technical Support and Maintenance Fees on LICENSED PRODUCTS

         The level of support and maintenance and the annual support fees to be
         agreed between the parties.

<PAGE>

LICENSE AGREEMENT

                                   APPENDIX F

                    MOSYS' PATENTS and PATENT APPLICATIONS

This License may contain all or portions the following U.S. patents owned by
MoSys:

         MoSys' Patent numbers 5,265,047, 5,498,886, 5,498,990, 5,511,020,
5,576,554, 5,592,632, 5,613,077, 5,615,169, 5,655,113, 5,666,480, 5,703,827,
5,708,624, 5,729,152, 5,737,587, 5,784,705, 5,787,267, 5,790,138, 5,805,509,
5,831,467, 5,843,799 and 5,829,026

This License may contain all or portions the following patents applications
filed by MoSys:

MoSys' Patent Application numbers [*].

<PAGE>

LICENSE AGREEMENT

                                   APPENDIX G

                        PUBLIC ANNOUNCEMENTS AND CONTENTS

1. Upon execution of this Agreement, both parties agree to cooperate in good
faith the joint public announcement of the existence of licensing and joint
venture relationship between MoSys and Licensee including the following
contents:

         "Licensee and MoSys announce the licensing of MoSys' advanced
         1T-SRAM(TM) embedded memory technology to be ported to Licensee's
         future advanced products incorporating high performance, high density
         embedded memory blocks."

         "Licensee has evaluated MoSys' 1T-SRAM(TM) embedded memory technology
         and selected MoSys for its unique performance, density and power
         capabilities not available from other technologies."

         "The detailed specifications and capabilities of MoSys 1T-SRAM(TM)
         embedded memory blocks and the Licensee's product incorporating such
         memory blocks will be announced at a later time."

2. Upon the completion of the development work of the LICENSED PRODUCT, both
parties agree to cooperate in good faith in the joint public announcement of the
LICENSED PRODUCT and the LICENSED INTEGRATED CIRCUIT.

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