SIGMA DESIGNS INC
S-3, 1997-08-07
COMPUTER PERIPHERAL EQUIPMENT, NEC
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     As filed with the Securities and Exchange Commission on August 7, 1997
                                                  Registration No. 333-
- --------------------------------------------------------------------------------


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                           ---------------------------

                                    FORM S-3
                             REGISTRATION STATEMENT
                                      Under
                           The Securities Act of 1933
                           ---------------------------

                               Sigma Designs, Inc.
             (Exact name of Registrant as specified in its charter)
                           ---------------------------

        CALIFORNIA                      7372                  94-2848099
(State or other jurisdiction     (Primary Standard         (I.R.S. Employer
    of incorporation or       Industrial Classification  Identification Number)
       organization)                Code Number)                      

                              46501 LANDING PARKWAY
                            FREMONT, CALIFORNIA 94538
                                  (510) 770-0100
(Address,  including zip code,  and telephone  number,  including  area code, of
                   Registrant's principal executive offices)
                           ---------------------------

                                  THINH Q. TRAN
                                  PRESIDENT AND
                             CHIEF EXECUTIVE OFFICER
                               SIGMA DESIGNS, INC.
                              46501 LANDING PARKWAY
                            FREMONT, CALIFORNIA 94538
                                 (510) 770-0100
(Name, address,  including zip code, and telephone number,  including area code,
                             of agent for service)
                           ---------------------------
                                   Copies to:
                               TOR R. BRAHAM, ESQ.
                        WILSON SONSINI GOODRICH & ROSATI
                            PROFESSIONAL CORPORATION
                               650 PAGE MILL ROAD
                        PALO ALTO, CALIFORNIA 94304-1050
                                 (650) 493-9300
                           ---------------------------

     Approximate date of commencement of proposed sale to the public: As soon as
practicable after the effective date of this Registration Statement.

     If any of the securities being registered on this Form are to be offered on
a delayed or continuous  basis  pursuant to Rule 415 under the Securities Act of
1933, please check the following box. [X]

     If this form is filed to  register  additional  securities  for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration  statement  number  of the  earlier
effective registration statement for the same offering. [_]

     If the only  securities  being  delivered  pursuant  to this Form are being
offered pursuant to dividend or interest  reinvestment  plans,  please check the
following box. [_]

     If this Form is a  post-effective  amendment  filed pursuant to Rule 462(c)
under the  Securities  Act,  check the following box and list the Securities Act
registration  statement number of the earlier effective  registration  statement
for the same offering. [_]

     If delivery of the  prospectus is expected to be made pursuant to Rule 434,
please check the following box. [_]

                          ---------------------------
<TABLE>

                                                CALCULATION OF REGISTRATION FEE
<CAPTION>
===================================================================================================================================
         Title of Each Class                 Amount             Proposed Maximum            Proposed Maximum          Amount of
          of Securities to                   to be               Offering Price            Aggregate Offering        Registration
            be Registered                  Registered             Per Share(1)                  Price(1)                 Fee
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                     <C>                        <C>                         <C>                      <C>    

Common Stock no par value............   1,100,000 shares           $4.38                       $4,818,000               $1,460

===================================================================================================================================
<FN>

(1)   Estimated   solely  for  the  purpose  of  computing  the  amount  of  the
      registration  fee based on the  average of the high and low prices for the
      Common Stock as reported on the  Nasdaq National Market on August 1, 1997,
      in  accordance  with  Rule  457(c)  under  the  Securities  Act  of  1933.
</FN>
</TABLE>

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

     THE REGISTRANT  HEREBY AMENDS THIS  REGISTRATION  STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER  AMENDMENT  WHICH  SPECIFICALLY  STATES  THAT  THIS  REGISTRATION
STATEMENT SHALL  THEREAFTER  BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE  SECURITIES  ACT OF 1933 OR UNTIL THE  REGISTRATION  STATEMENT  SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION,  ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.
================================================================================
<PAGE>

                   SUBJECT TO COMPLETION DATED          , 1997

                                   PROSPECTUS


                                1,100,000 SHARES

                               SIGMA DESIGNS, INC.

                                  COMMON STOCK


         This  Prospectus may be used only in connection  with the resale,  from
time to time, of up to 1,100,000  shares (the "Shares") of Common Stock,  no par
value per share (the "Common  Stock"),  of Sigma Designs,  Inc.  ("Sigma" or the
"Company"),  for the account of the selling  shareholders  identified below (the
"Selling Shareholders").  All of the Shares covered hereby are to be sold by the
Selling  Shareholders,  who originally received the Shares pursuant to a private
placement. The Company will not receive any of the proceeds from the sale of the
Shares by the Selling  Shareholders.  The expenses  incurred in registering  the
Shares, including legal and accounting fees, will be paid by the Company.

         The Shares offered  hereby may be offered and sold,  from time to time,
by the Selling Shareholders in one or more transactions (which may involve block
transactions) on the Nasdaq National Market (or any exchange on which the Common
Stock  may  then be  listed),  in the  over-the-counter  market,  in  negotiated
transactions  or  otherwise.  Sales will be effected at such prices and for such
consideration  as may be obtainable from time to time.  Commission  expenses and
brokerage fees, if any, will be paid by the Selling  Shareholders.  See "Plan of
Distribution."

         The  Company's  Common  Stock is traded on the Nasdaq  National  Market
under the symbol  "SIGM." On  August 6, 1997, the last sale price for the Common
Stock  as  reported  on  the  Nasdaq   National  Market  was  $4-7/8 per  share.

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

         SEE "RISK  FACTORS" ON PAGE 3 FOR A DISCUSSION OF CERTAIN  FACTORS THAT
SHOULD BE CONSIDERED BY  PROSPECTIVE  PURCHASERS OF THE SHARES  OFFERED  HEREBY.

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

    THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
     AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
      SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
          PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY
              REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

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

                      THE DATE OF THIS PROSPECTUS IS     , 1997

<PAGE>

                              AVAILABLE INFORMATION

         The  Company  is  subject  to  the  informational  requirements  of the
Securities  Exchange  Act of 1934,  as amended  (the  "Exchange  Act"),  and, in
accordance therewith, files reports, proxy statements and other information with
the Securities and Exchange Commission (the "Commission").  Such reports,  proxy
and information  statements and other information may be inspected and copied at
the  public  reference  facilities  maintained  by the  Commission  at 450 Fifth
Street, N.W.,  Washington,  D.C. 20549, and at the following Regional Offices of
the Commission:  New York Regional Office,  Seven World Trade Center,  New York,
New York 10048, and Chicago Regional Office,  500 West Madison Street,  Chicago,
Illinois  60661.  Copies  of such  material  can be  obtained  from  the  Public
Reference Section of the Commission,  450 Fifth Street, N.W.,  Washington,  D.C.
20549 upon payment of the  prescribed  fees.  The Common Stock of the Company is
quoted on the Nasdaq National Market.  Reports, proxy and information statements
and other  information  concerning  the Company may be inspected at the National
Association of Securities Dealers, Inc. at 1735 K Street, N.W., Washington, D.C.
20006.  The  Commission  maintains a World Wide Web site that contains  reports,
proxy and information  statements and other  information  regarding  registrants
that  file  electronically  with  the  Commission.  The  address  of the site is
http://www.sec.gov.

         This Prospectus  constitutes a part of a Registration Statement on Form
S-3 (herein,  together  with all  amendments  and  exhibits,  referred to as the
"Registration  Statement")  filed by the Company with the  Commission  under the
Securities Act of 1933, as amended (the "Securities  Act"). This Prospectus does
not  contain all of the  information  set forth in the  Registration  Statement,
certain parts of which are omitted in accordance  with the rules and regulations
of the Commission.  For further  information with respect to the Company and the
shares  covered  by this  prospectus,  reference  is  made  to the  Registration
Statement. Statements contained herein concerning the provisions of any document
are not  necessarily  complete,  and each such  statement  is  qualified  in its
entirety by reference to the copy of such document filed with the Commission.

                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

         The following  documents  filed by the Company with the  Commission are
hereby  incorporated by reference in this  Prospectus:  (i) the Company's Annual
Report on Form  10-K for the  fiscal  year  ended  January  31,  1997,  (ii) the
Company's  Quarterly  Report on Form 10-Q for the quarter  ended April 30, 1997;
(iii) the Company's Proxy Statement  relating to the Company's Annual Meeting of
Shareholders  to be held on June 6, 1997,  (iv) the Company's  Current Report on
Form 8-K filed with the  Commission on May 6, 1996,  and (v) the  description of
the Company's Common Stock contained in its  Registration  Statement on Form 8-A
filed with the Commission on November 3, 1986, as amended on September 22, 1989.

         All  reports  and other  documents  subsequently  filed by the  Company
pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date
of this Prospectus and prior to the termination of this offering shall be deemed
to be incorporated by reference  herein and to be a part hereof from the date of
filing of such reports and documents. Any statement incorporated herein shall be
deemed to be modified or  superseded  for  purposes  of this  Prospectus  to the
extent  that a statement  contained  herein or in any other  subsequently  filed
document  which  also is or is deemed to be  incorporated  by  reference  herein
modifies or supersedes such  statement.  Any statement so modified or superseded
shall not be deemed,  except as so modified or superseded,  to constitute a part
of the Registration Statement or this Prospectus.

         The Company hereby undertakes to provide without charge to each person,
including  any  beneficial  owner,  to whom a copy of this  Prospectus  has been
delivered,  upon written or oral request of such person, a copy of any or all of
the foregoing documents incorporated herein by reference (other than exhibits to
such documents,  unless such exhibits are specifically incorporated by reference
into such documents). Requests for such documents should be submitted in writing
to Carol Kaplan at the Company's  principal  executive  offices at 46501 Landing
Parkway, Fremont, California 94538, or by telephone at (510) 770-0100.

                                       -2-

<PAGE>



                                  RISK FACTORS

         In the interest of providing the Company's  shareholders  and potential
investors with certain Company information, including management's assessment of
the  Company's  future  potential,   certain  statements  set  forth  herein  or
incorporated  by  reference  herein  relate  to  management's  future  plans and
objectives or to the Company's future economic performance.  Such statements are
"forward-looking  statements"  within  the  meaning  of  Section  27A(I)  of the
Securities Act of 1933, as amended,  and in Section 21E(I) of the Securities Act
of 1934, as amended. Although any forward-looking statements contained herein or
incorporated by reference  herein or otherwise  expressed by or on behalf of the
Company are, to the  knowledge and in the judgment of the officers and directors
of the Company,  expected to prove true and to come to pass,  the Company is not
able to predict such events with absolute certainty.  Accordingly,  shareholders
and  potential   investors  are  hereby   cautioned   that  certain   events  or
circumstances  could  cause  actual  results  to differ  materially  from  those
projected or predicted. In addition, forward-looking statements are based on the
Company's knowledge and judgment as of the date hereof, and the Company does not
intend to update any  forward-looking  statements to reflect events occurring or
circumstances  existing  hereafter.  In  particular,  the Company  believes  the
following  facts  could  affect   forward-looking   statements  made  herein  or
incorporated  by reference  herein or in future  written or oral releases and by
hindsight, prove such statements to be overly optimistic and unachievable.

         History of Operating Losses. The Company incurred significant losses in
fiscal 1993,  1994, 1995, and 1996 and had substantial  negative  operating cash
flow in fiscal 1992,  1993,  1994, 1995, and 1996. Since the introduction of the
Company's  REALmagic  Moving  Picture  Experts  Group  ("MPEG")  product line in
November 1993, the Company has invested  heavily in marketing and  technological
innovation  for its REALmagic  products.  As a result,  the Company  experienced
significant  losses  through  fiscal  1996.  Fiscal  1994,  1995,  and 1996 also
included significant losses associated with products other than those related to
the REALmagic  technology.  Since  inception,  the Company's  total  accumulated
deficit is $33,114,000. There can be no assurance that the Company will continue
to sell  its new  REALmagic  products  in  substantial  quantities  or  generate
significant  revenues  from such sales.  Although the Company was  profitable in
fiscal 1997, there can be no assurance that the Company will continue to achieve
profitable  operations  in any  future  fiscal  quarter  or fiscal  year or that
profitable operations, if achieved, will be sustainable.

         Marketing Risks. The Company's  ability to increase its sales,  achieve
profitability,  and  maintain  REALmagic  as a PC industry  multimedia  standard
depends substantially on the Company's ability to achieve a sustained high level
of sales to new OEM  customers.  The Company has not  executed  volume  purchase
agreements  with any of the  Company's  customers,  and these  customers are not
under any obligation to purchase any minimum quantity of the Company's products.
The Company has not achieved bundling  agreements with numerous OEM customers to
ensure  success of the  REALmagic  product line.  Moreover,  even if the Company
achieves  new design  wins,  there can be no assurance  that  personal  computer
("PC")  manufacturers  will  purchase  the  Company's  products  in  substantial
volumes.  Sales to any  particular  OEM  customer  are  subject  to  significant
variability   from  quarter  to  quarter  and  to  severe  price   pressures  by
competitors.  Based on its  experience in the personal  computer  industry,  the
Company  expects  that  its  actual  sales  to  OEM  customers  will  experience
significant  fluctuations,  and  estimates  of future  sales with respect to any
particular customer or groups of customers are inherently uncertain.

         The Company's ability to achieve sustained  profitability  also depends
on a substantial  increase in sales of REALmagic  products  through domestic and
international  distributors for resale through retail channels.  In fiscal 1997,
Ingram Micro,  Inc. was the only domestic customer to which sales comprised over
10% of consolidated revenue. Sales to such distributors are typically subject to
contractual  rights of inventory  rotation or price  protection.  Regardless  of
particular  contractual  rights,  however,  the failure of Ingram Micro, Inc. or
other distributors to achieve sustained sell-through of REALmagic products could
result in product returns or collection  problems,  contributing to fluctuations
in the  Company's  results of  operations.  There can be no  assurance  that the
Company will be successful in maintaining a significant market for its REALmagic
products.

                                       -3-

<PAGE>

         Dependence on  Development  of Software  Titles by Third  Parties.  The
Company depends on third-party content developers to create, produce, and market
software titles that will operate in the REALmagic format. No software developer
is contractually obligated to produce a REALmagic-compatible title. There can be
no assurance that  third-party  software  developers  will continue to produce a
substantial number of software titles, or that they will produce enough software
titles to  develop  and  sustain a  significant  market in  REALmagic  products.
Moreover,  there can be no assurance that any individual software titles will be
of high quality or that they will achieve market  acceptance.  There can also be
no assurance  that current  popular  software  titles will be  introduced in the
REALmagic format.  Because the Company has no control over the content of titles
produced by software  developers,  the software  titles  developed may represent
only a limited  number of  software  categories  and are likely to be of varying
quality.

         Currently,  more  than  500  interactive  MPEG  off-the-shelf  business
applications  are  available  in the MPEG  format.  The Company has licensed the
REALmagic  API  to  over  1,200   software   developers   for   development   of
REALmagic-compatible  programs.  However,  the number of  software  titles to be
developed  by such  software  companies  cannot  be  predicted.  There can be no
assurance that any software developer who develops a REALmagic-compatible  title
will actively promote the product or develop follow-on titles.  Moreover,  there
can be no  assurance  that any  published  title will have the  quality or price
characteristics required to be commercially successful or that titles compatible
with the REALmagic  format will be allotted retail shelf space.  Future sales of
REALmagic  products  will  likely  depend on a decision  by  retailers  to carry
compatible software titles on the shelf.

         The  Company  announced  in October  1995 its  strategic  direction  of
selling  chipsets to add-on card and computer  manufacturers.  The REALmagic Pro
chipset announced in October 1995 became available in January 1996. This chipset
enables other companies to manufacture 100% OM-1 and  REALmagic-compatible  MPEG
playback cards capable of playing the growing number of MPEG software  titles on
the market. In addition, the Company announced the REALmagic Explorer chipset in
November 1995, which enables OEM customers to build type II ZVport-compatible PC
cards for MPEG-1 video and audio playback,  bringing MPEG technology to notebook
computers  for the first time.  In July 1996,  the Company  entered the graphics
market  with  announcement  of its 2D VGA chip.  In December  1996,  the Company
announced a 2D/3D graphics chip. Any production delay or failure to bring any of
the chipsets to market could adversely  affect the Company's  market position by
limiting chipset acceptance by computer manufacturers.

         Technological   Change.  The  market  for  multimedia  PC  products  is
characterized  by rapidly  changing  technology and user  preferences,  evolving
formats  for  compression  of video and audio  data,  and  frequent  new product
introductions.  Even though REALmagic  products and related software titles have
gained initial market acceptance, the Company's success will depend, among other
things,  on  the  Company's  ability  to  achieve  and  maintain   technological
leadership and to remain competitive in terms of price and product performance.

         To have  technological  leadership,  the Company must  continue to make
technological  advancements in the area of MPEG video and audio decoding.  These
advancements   include   compatibility  with  emerging  standards  and  multiple
platforms,  improvements  to the  REALmagic  architecture,  enhancements  to the
REALmagic  API,  and the  achievement  of these  enhancements.  There  can be no
assurance  that the Company  will be able to make any such  advancements  to its
REALmagic  technology or that,  if such  advances are made,  the Company will be
able to achieve and maintain technological  leadership.  Any material failure of
the  Company or OEMs and  software  developers  to develop  or  incorporate  any
required  improvement  could  adversely  affect the continued  acceptance of the
Company's  technology and the  introduction and sale of future products based on
the  Company's   technology.   There  can  be  no  assurance  that  products  or
technologies  developed  by  others  will  not  render  obsolete  the  Company's
technology and the products based on the Company's technology.

                                       -4-

<PAGE>

         To be competitive,  the Company must anticipate the needs of the market
and  successfully  develop and  introduce  innovative  new  products in a timely
fashion. No assurance can be given that the Company will be able to successfully
complete the design of its new products,  have these  products  manufactured  at
acceptable manufacturing yields, or obtain significant purchase orders for these
products.  The  introduction  of new  products  may  adversely  affect  sales of
existing  products,  contributing  to  fluctuations  in  operating  results from
quarter to quarter.  The  introduction of new products also requires the Company
to carefully manage its inventory to avoid inventory obsolescence.  In addition,
new products  typically  have higher  initial  component  costs than more mature
products,  possibly  resulting  in downward  pressures  on the  Company's  gross
margins.

         Competition.   The  market  for   multimedia   PC  products  is  highly
competitive, driven by faster processors provided by Intel Corporation and other
companies.  The  possibility  that  other  companies  with more  experience  and
financial  resources may develop a competitive product may inhibit future growth
of REALmagic  technology.  Increased  competition  may be generated from several
major  computer  product   manufacturers   that  have  developed   products  and
technologies  that could  compete  directly  with  REALmagic  products on the PC
platform. These include SGS-Thomson Microelectronics,  C-Cube Microsystems,  IBM
Microelectronics,  Chromatics Research, Inc., Zoran Corporation and Mediamatics,
Inc. Also, several OEMs and microprocessor  companies possess  proprietary video
compression technology that may compete with MPEG-based products.  These include
IBM, Intel Corporation,  Mediamatics Corporation and ESS Technology,  Inc.. Most
of these companies have  substantial  experience and expertise in audio,  video,
and multimedia technology and in producing and selling consumer products through
retail distribution,  as well as substantially  greater engineering,  marketing,
and financial  resources  than the Company.  Competitors of the Company may form
cooperative  relationships,  which could present  formidable  competition to the
Company.  There can be no  assurance  that  REALmagic  technology  will  achieve
commercial success or that it will compete effectively against other interactive
multimedia products,  services, and technologies that currently exist, are under
development, or may be announced by competitors.

         Reliance on a Single Line of Products.  The Company's business strategy
has been to focus on REALmagic  products by investing  heavily in PC-based  MPEG
technology.  In the fiscal year ended  January  31,  1997,  sales of  multimedia
products  accounted for  virtually all of net sales.  A decline in market demand
for multimedia  products would adversely affect the Company's operating results.
The Company's present reliance on REALmagic  products is exacerbated by the fact
that  multimedia  product  sales  are  concentrated  in  the  personal  computer
industry.  A decline in demand for PCs could have a material  adverse  effect on
the Company's operating results and financial condition.

         Variability of Operating Results.  The Company's operating results have
fluctuated  in the past and may  continue  to  fluctuate  in the future due to a
number of factors, including but not limited to new product introductions by the
Company and its  competitors;  market  acceptance of the  Company's  products by
OEMs,  software  developers,  and  end  users;  the  success  of  the  Company's
promotional programs;  gains or losses of significant  customers;  reductions in
selling prices;  inventory obsolescence;  an interrupted or inadequate supply of
semiconductor chips; the Company's ability to protect its intellectual property;
and loss of key  personnel.  In addition,  sales to OEM customers are subject to
significant  variability from quarter to quarter,  depending on OEMs' timing and
release  of  products  incorporating   REALmagic  technology,   experience  with
sell-through of such products, and inventory levels.

         The  market for  consumer  electronics  products  is  characterized  by
significant  seasonal  swings in  demand,  which  typically  peak in the  fourth
calendar quarter of each year. Since the Company expects to derive a substantial
portion of its revenues  from the sales of REALmagic  products in the future and
the demand for such  products  will depend in part on the  emergence  of digital
video technology,  the Company's  revenues may vary with the availability of and
demand for DVD  titles.  Such  demand may  increase or decrease as a result of a
number of factors that cannot be  predicted,  such as consumer  preferences  and
product  announcements  by  competitors.  Announcements  of  directly  competing
products will likely have a negative effect on operating results. Based on the

                                       -5-

<PAGE>

Company's  experience,  the Company  believes that a substantial  portion of its
shipments will occur in the third month of a quarter, with significant shipments
completed in the latter part of the third month. This shipment pattern may cause
the  Company's  operating  results  to be  difficult  to  predict.  The  Company
currently places noncancellable orders to purchase  semiconductor  products from
its  foundries  on a long  lead  time  basis.  Consequently,  if, as a result of
inaccurate  forecasts  or  canceled  purchase  orders,   anticipated  sales  and
shipments in any quarter do not occur when expected,  inventory  levels could be
disproportionately  high,  requiring  significant  working  capital,  negatively
affecting operating results.

         Manufacturing Risks. The Company does not have long-term contracts with
such  suppliers and conducts  business with its suppliers on a written  purchase
order basis. The Company's  reliance on independent  suppliers  involves several
risks,  including the absence of adequate  capacity,  the  unavailability of, or
interruptions  in access to, certain process  technologies,  and reduced control
over delivery  schedules,  manufacturing  yields, and costs. The Company obtains
certain of its components from a single source. Although delays or interruptions
have not occurred to date, any delay or interruption in the supply of any of the
components  required  for  the  production  of  the  REALmagic  multimedia  card
currently  obtained from a single source could have a material adverse impact on
sales of REALmagic products by the Company and, thus, on the Company's business.

         The Company must provide its  suppliers  with  sufficient  lead time to
meet forecasted manufacturing objectives.  Any failure to properly forecast such
quantities  could materially  adversely affect the Company's  ability to produce
REALmagic products in sufficient quantities.  No assurance can be given that the
Company's forecasts regarding new product demand will be accurate,  particularly
since  the  Company  sells  REALmagic   products  on  a  purchase  order  basis.
Manufacturing the REALmagic  chipsets is a complex process,  and the Company may
experience short-term  difficulties in obtaining timely deliveries,  which could
affect the Company's ability to meet customer demand for its products.  Any such
delay in delivering products in the future could materially and adversely affect
the Company's operating results. In addition,  should any of the Company's major
suppliers be unable or unwilling to continue to  manufacture  the  Company's key
components in required  volumes,  the Company would have to identify and qualify
acceptable  additional  suppliers.  This qualification  process could take up to
three months or longer.  No assurances can be given that any additional  sources
of supply  could be in a position to satisfy  the  Company's  requirements  on a
timely basis.

         In the past, the Company has  experienced  production  delays and other
difficulties,  and the Company could experience  similar problems in the future.
In  addition,  there can be no assurance  that a product  defect will not escape
identification  at the  factory,  possibly  resulting  in  unanticipated  costs,
cancellations or deferrals of purchase orders, or costly recall of products from
customer sites.

         Dependence on Key Personnel.  The Company's  future success  depends in
large part on the continued service of its key technical,  marketing, sales, and
management personnel.  Given the complexity of REALmagic technology, the Company
is  dependent  on its ability to retain and motivate  highly  skilled  engineers
involved in the ongoing hardware and software  development of REALmagic products
who will be  required  to refine  the  existing  hardware  system and API and to
introduce  enhancements  in future  applications.  The multimedia PC industry is
characterized by a high level of employee mobility and aggressive  recruiting of
skilled  personnel.  There  can  be no  assurance  that  the  Company's  current
employees will continue to work for the Company or that the Company will be able
to obtain the  services of  additional  personnel  necessary  for the  Company's
growth. The Company does not have "key person" life insurance policies on any of
its employees.

         Limited  Intellectual  Property  Protection.  The Company's  ability to
compete may be affected by its ability to protect its  proprietary  information.
The Company currently holds four patents covering the technology  underlying the
REALmagic products, and the Company has filed certain patent applications and is
in the  process  of  preparing  others.  There  can  be no  assurance  that  any
additional  patents for which the Company has applied will be issued or that any
issued patents will provide  meaningful  protection of its product  innovations.
The Company,


                                       -6-

<PAGE>


like other emerging multimedia companies,  relies primarily on trade secrets and
technological  know-how in the conduct of its business. In addition, the Company
is relying in part on  copyright  law to protect  its  proprietary  rights  with
respect to REALmagic technology.

         The  electronics  industry  is  characterized  by  frequent  litigation
regarding  patent and intellectual  property  rights.  Any such litigation could
result in  significant  expense to the  Company  and  divert the  efforts of the
Company's technical and management personnel, whether or not the outcome of such
litigation  is favorable to the  Company.  Moreover,  in the event of an adverse
result  in any  such  litigation,  the  Company  could  be  required  to  expend
significant resources to develop noninfringing  technology or to obtain licenses
to the  technology  that  is the  subject  of the  litigation.  There  can be no
assurance  that the Company would be successful in such  development or that any
such licenses  would be available on acceptable  terms,  if at all. In addition,
patent  disputes in the  electronics  industry  have often been settled  through
cross-licensing  arrangements.  Because  the  Company  does not yet have a large
portfolio  of issued  patents,  the Company may not be able to settle an alleged
patent infringement claim through a cross-licensing arrangement.

         International  Operations.  During the fiscal  years ended  January 31,
1997,  1996  and  1995,   sales  to   international   customers   accounted  for
approximately  72%, 63%, and 36% of the Company's net sales,  respectively.  The
Company  anticipates that sales to international  customers,  including sales of
REALmagic products, will continue to account for a substantial percentage of net
sales.  In  addition,  some of the  foundries  that  manufacture  the  Company's
products and  components  are located in Asia.  Overseas  sales and purchases to
date  have  been  denominated  in  U.S.  dollars.  Due to the  concentration  of
international  sales and manufacturing  capacity in Asia, the Company is subject
to the  risks  of  conducting  business  internationally.  These  risks  include
unexpected  changes in  regulatory  requirements  and  fluctuations  in the U.S.
dollar that could increase the sales price in local  currencies of the Company's
products in international markets or make it difficult for the Company to obtain
price  reductions from its foundries.  The Company does not currently  engage in
any hedging  activities to mitigate  exchange rate risks. To the extent that the
Company increases its transactions in foreign currencies,  the Company's results
of operations could be adversely affected by exchange rate fluctuations.

         Volatility of Stock Price. The market of the Company's Common Stock has
been subject to significant volatility,  which is expected to continue.  Factors
such as  announcements of the introduction of new products by the Company or its
competitors and market conditions in the technology, entertainment, and emerging
growth company sectors may have a significant  impact on the market price of the
Company's  Common Stock.  Further,  the stock market has experienced  volatility
that has  particularly  affected the market prices of equity  securities of many
high technology and development stage companies such as those in the electronics
industry.  Such volatility has often been unrelated or  disproportionate  to the
operating performance of such companies. These fluctuations,  as well as general
economic and market  conditions,  may  adversely  affect the price of the Common
Stock.


                                       -7-

<PAGE>



                                   THE COMPANY

Overview

         The following business section contains forward-looking statements that
involve  risks and  uncertainties.  The  Company's  actual  results could differ
materially  from those  anticipated  in these  forward-looking  statements  as a
result of certain factors, including those set forth under "Risk Factors."

         Sigma  designs,   manufactures  (using  subcontractors),   and  markets
multimedia products for use with personal computers. The emergence of multimedia
technology  in the PC market has  dramatically  changed  the way in which  users
interact with computers. Multimedia integrates different elements, such as sound
and video, to enhance the computing experience and deliver a heightened sense of
realism. Through its REALmagic product line incorporating MPEG technology, Sigma
Designs has become a leader in this emerging market.

         Prior to MPEG's introduction, video on personal computers suffered from
serious  drawbacks.  Motion pictures  appeared jerky,  and video was confined to
small window sizes. MPEG, a defined International  Standards  Organization (ISO)
standard  for  compression,   eliminated   those  problems  and   revolutionized
multimedia  on the PC platform.  For the first time,  MPEG users could play back
full-screen,  full-motion video combined with stereo audio, even from a standard
CD-ROM. A single CD-ROM using the MPEG compression  technique can store up to 74
minutes of full-motion video and audio.

         With MPEG  technology,  producers  can create  (and users can enjoy) an
interactive,  television-like  experience  on a  desktop  PC.  The  result  is a
significant new visual impact, thereby opening possibilities for a wide range of
entertainment,  education,  training, and business presentation applications. In
April 1997, the Company  announced its entry into the Digital Video Disk ("DVD")
market. A key element of the DVD  specification is the use of MPEG-2 for digital
video  compression,  a  technology  in which  Sigma has  established  expertise.
Sigma's  REALmagic  Hollywood  PC-based  DVD  solution  is an  extension  of the
Company's  MPEG  expertise  and  provides a  highly-integrated  solution for the
PC-DVD market.

The REALmagic MPEG Standard

         Since its first  shipment in November  1993,  REALmagic  technology has
received  support from PC industry  leaders,  software  developers,  and OEM and
retail customers.

Partnership with PC Industry Leaders

         Sigma  has  received  endorsement  for its  REALmagic  technology  from
companies  such  as  Hewlett-Packard   Company,  Hughes  Network  Systems,  IBM,
Microsoft Corporation, Oracle Corporation, Novell, Inc., Silicon Graphics, Inc.,
Starlight  Networks and Sun  Microsystems,  Inc. On the  operating  system side,
REALmagic is supported by Microsoft Windows 95 and IBM O/S 2. Additionally, both
Novell and Starlight  Networks have products that are compatible  with REALmagic
in a network environment.

Support from Software Developers

         Support for Sigma's  REALmagic  MPEG  standard has grown rapidly in the
software  development  community.  Three  years ago,  the Company  listed  fifty
authorized  REALmagic  software  developers;  by the end of fiscal 1996, Sigma's
roster of  developers  rose to more than 1,200,  including  Activision,  Tsunami
Media, Mindscape, Inc. and Interplay Productions. This developer support has led
to the introduction of more than 500 off-the-shelf  business applications in the
REALmagic format.


                                       -8-

<PAGE>

         The REALmagic DOS MPEG  Applications  Programming  Interface  (API) has
become an industry standard for MPEG-1 software development, further evidence of
support from the software development community.  With its robust functionality,
the REALmagic API is currently the preferred  technology  available for creating
fully interactive MPEG software titles.

Support from OEMs

         In the United States, Dell Computer  Corporation,  Smith Barney,  Inc.,
Infotel,  Royal Computer and Zenon  Technology,  Inc., have purchased  REALmagic
Maxima boards for installation inside their multimedia PCs.  Additionally,  many
VARs have taken shipments of REALmagic  boards for systems  targeted at vertical
kiosk, business training, and presentation applications.  In the Far East, where
the  popularity  of karaoke  and  videoCD  has made  REALmagic  a well  received
product,  the  Company's  OEM  customers  include  NEC  Corporation,   Panasonic
Industrial Co. and Virt in Japan and Hyundai and Haitai in Korea.

Acceptance by the Retail Channel

         In addition to international  distributors,  national U.S. distributors
such as Ingram  Micro,  Inc. and Tech Data  Corporation  are carrying  REALmagic
products.

REALmagic Business Strategies

         Sigma's corporate  objective is to continue to be a leading provider of
MPEG multimedia products that enable full-screen,  full-motion,  TV-like quality
video on the standard  desktop and the notebook PC. To accomplish  this goal the
Company intends to promote widespread  acceptance of REALmagic  technology.  The
key parts of this strategy include:

Encourage Continued Development of Software Utilizing REALmagic Technology

         The  Company   continues  to  encourage   widespread   software   title
development by providing free technical  support and licensing its comprehensive
API free of charge to all  developers  who wish to publish  REALmagic-compatible
software titles.

Win More OEM Partnerships and Further Penetrate the Retail Channel

         To establish REALmagic MPEG-2 as a standard,  the Company will continue
to seek design  wins with major PC  manufacturers  worldwide,  in which the OEMs
will  factory-install  REALmagic boards or chipsets inside their multimedia PCs.
On the retail side, the Company's  systems  integration sales team will continue
to work with its network of national distributors and special VARs to distribute
its high-end  REALmagic  playback card. In Europe and Asia Pacific,  the Company
will continue to expand its relationship  with  distributors as well as OEMs and
VARs.  In addition,  the Company will seek to sell to add-on card  manufacturers
who will, in turn, market to owners of 486 and Pentium PCs.

Introduce New Generations of REALmagic,  Offer REALmagic Products at Competitive
Prices, and Continually Reduce Product Costs

         A significant  aspect of the Company's  product  strategy is to include
the sale of REALmagic chipsets in its product line and continue developing newer
versions and  generations  of REALmagic  products,  including  chipsets for both
desktop  and  notebook  PCs.  The  general  direction  is to  continue  to offer
consumers with better-featured and lower-priced products over time.

                                       -9-

<PAGE>


REALmagic Products

         The Company offers a complete family of REALmagic products including:

         o        REALmagic  DVD--In April 1997, the Company announced its entry
                  into  the DVD  market.  The  Realmagic  Hollywood  DVD  MPEG-2
                  playback card turns a PC into a full-featured  DVD player that
                  fully  exploits all of the digital video and digital  surround
                  sound  capabilities  of the DVD  format  and  upcoming  MPEG-2
                  interactive   titles.  The  REALmagic   Hollywood   DVD/MPEG-2
                  playback  card  displays  flicker-free  video  at  full-screen
                  resolution,  making video  watching on a PC a new  experience.
                  Movies can be  simultaneously  displayed on the PC monitor and
                  on a large-screen TV.

         o        REALmagic  Maxima--An MPEG playback card designed to eliminate
                  compatibility  issues  with  graphics  cards by  using  Analog
                  Overlay  Technology.  The Maxima  accelerates  MPEG video to a
                  guaranteed   30  frames   per   second   playback   rate  with
                  high-quality  CD  sound at  resolutions  of up to 1280 x 1024,
                  which is in  compliance  with the MPC3  industry  standard for
                  MPEG  video   playback.   The  REALmagic   drivers   guarantee
                  compatibility with all interactive MPEG titles available today
                  and all future titles that are OM-1 compatible.

         o        REALmagic Pro Chipset---In October 1995, the Company announced
                  the availability  for sale of the REALmagic Pro chipset.  This
                  chipset has the following distinctive features:

                  o        Very high  quality MPEG  playback  through 16 million
                           color MPEG video;  horizontal  and vertical  bilinear
                           interpolation;   digital  brightness,  contrast,  and
                           saturation adjustment

                  o        The use of Sigma's REAL Overlay chip, enabling mixing
                           MPEG video and PC graphics at  resolutions up to 1600
                           x 1200 with an 85 Hz non-interlaced refresh rate

                  o        100% Windows 95 and MPC3 compliance

                  o        100% OM-1 and REALmagic compatibility

                  o        Direct interface for NTSC/PAL decoder to  support  TV
                           tuner input

         o        REALmagic  Explorer---In  November 1995, the Company announced
                  the  introduction  of the  REALmagic  Explorer  chipset.  This
                  chipset puts MPEG-1 digital video playback in ZV port PC cards
                  for  the  new  generation  of  notebook  computers.  The  main
                  features of this chipset include:

                  o         MPEG-1 video playback with 16 million colors

                  o         MPEG-1 audio layers I and II

                  o         100% REALmagic and OM-1 standard compatibility

                  o         MPC3 standard compliance

                  o         Windows 95 Plug and Play


                                      -10-

<PAGE>


         o        REALmagic 64/GX video and graphics  accelerator  chip--In July
                  1996, the Company  announced the introduction of this chip for
                  the commercial and home desktop PC market. The REALmagic 64/GX
                  includes an  optimized  64-bit  graphics  accelerator  engine,
                  unique  motion-video acceleration hardware, and a highly tuned
                  memory  interface.  This  chip has the  following  distinctive
                  features:

                  o        The 64-bit  architecture  supporting  REALmagic 64/GX
                           yields 20% faster GUI  acceleration  than competitive
                           products.

                  o        The video  engine  includes a YUV to RGB  color-space
                           converter to accelerate  decompression and a hardware
                           scaler to  provide  smooth  horizontal  and  vertical
                           scaling.

                  o        DRAM support of 1 MB to 4 MB enables the  accelerator
                           to  be  integrated  with  machines  at a  variety  of
                           price/performance levels.

Marketing and Sales

         Sigma  Designs  currently  distributes  its products  through  sales to
national and regional  distributors,  VARs,  and OEMs in the U.S. and throughout
the world. The company's U.S.  distributors  include Ingram Micro, Inc. and Tech
Data,  and its OEMs  include  Panasonic,  NEC,  Royal  Computer,  Smart  Modular
Technologies, Inc., Kingmax Technology, Inc., Lung Hwa Electronics Co., Ltd. and
Zenon  Computer   Systems.   The  Company's   international   distributors   are
strategically  located in many countries around the world.  Although the Company
was  profitable  throughout  all four  quarters of fiscal 1997,  there can be no
assurance  that the  Company  will  maintain  profitability  in  fiscal  1998 or
thereafter.

         The Company generally  acquires and maintains products for distribution
through  retail  channels based on forecasts  rather than firm purchase  orders.
Additionally,  the  Company  generally  acquires  products  for  sale to its OEM
customers  only after  receiving  purchase  orders  from such  customers,  whose
purchase orders are typically  cancelable without  substantial penalty from such
OEM customers.  The Company currently places  noncancellable  orders to purchase
semiconductor products from its suppliers on a twelve- to sixteen-week lead time
basis.  Consequently,  if,  as a result of  inaccurate  forecasts  or  cancelled
purchase  orders,  anticipated  sales and  shipments in any quarter do not occur
when expected,  expenses and inventory levels could be disproportionately  high,
requiring  significant  working  capital and resulting in severe pressure on the
Company's financial condition.

Research and Development

         As of  July  1,  1997,  the  Company  had a staff  of 43  research  and
development personnel, which conducts all the Company's product development. The
Company  is  focusing  its  development  efforts  primarily  on MPEG  multimedia
products,  including  new and improved  versions of REALmagic  MPEG chipsets and
cost reduction processes.

         To achieve and  maintain  technological  leadership,  the Company  must
continue to make technological advancements in the areas of MPEG video and audio
compression and  decompression.  These advancements  include  compatibility with
emerging  standards  and  multiple  platforms,  improvements  to  the  REALmagic
architecture,  and  enhancements to the REALmagic API. There can be no assurance
that the Company  will be able to make any such  advancements  in the  REALmagic
MPEG  technology  or, if they are made,  that the Company will be able to market
such advancements to maintain profitability and its technological leadership.


                                      -11-

<PAGE>


         During  fiscal  1997,  fiscal  1996,  and fiscal  1995,  the  Company's
research and development expenses were $4,688,000,  $4,499,000,  and $4,349,000,
respectively.  The Company plans to continue to devote substantial  resources to
research and  development  of future  generations  of MPEG and other  multimedia
products.

Competition

         The market for MPEG multimedia products is highly competitive. Although
the Company  does not  believe  that any  products  sold by a third party are in
direct  competition  with the  REALmagic  decoding  card in  terms of price  and
performance,  the  possibility  that other  companies  with more  marketing  and
financial  resources  may  develop a  competitive  product  may inhibit the wide
acceptance  of REALmagic  technology.  The Company  believes  that many computer
product  manufacturers  are developing MPEG products that will compete  directly
with REALmagic products in the near future.

         The Company  believes  that the  principal  competitive  factors in the
market for MPEG  multimedia  hardware  products  include  time to market for new
product introductions, product performance, compatibility to industry standards,
price,  and marketing and distribution  resources.  The Company believes that it
competes most favorably with respect to time to market, product performance, and
price  of its  REALmagic  products.  Moreover,  the  Company  believes  that the
acceptance of the REALmagic API as an industry standard for software development
could provide a  significant  competitive  advantage  for the Company.  However,
there can be no assurance that the Company's  lead time in product  introduction
will be sustained.

         Sales to distributors and sometimes even to OEMs are typically  subject
to contractual rights of inventory rotation and price protection.  Regardless of
particular  contractual  rights, the failure of one or more distributors or OEMs
to achieve sustained  sell-through of REALmagic products could result in product
returns or collection problems,  contributing to significant fluctuations in the
Company's operating results.

Licenses, Patents, and Trademarks

         The Company is seeking patent protection for the basic  architecture of
the REALmagic  Producer  (the  Company's  video  encoding  product),  as well as
certain  software  and  hardware  features  in current  and future  versions  of
REALmagic.  The Company currently has eight pending patent  applications for its
REALmagic technology. Four patents have been issued to the Company. There can be
no  assurance  that more patents  will be issued or that such  patents,  even if
issued, will provide adequate protection for the Company's competitive position.
The Company  also  attempts to protect its trade  secrets and other  proprietary
information  through  agreements  with customers,  suppliers,  and employees and
other  security  measures.  Although  the Company  intends to protect its rights
vigorously, there can be no assurance that these measures will be successful.

Manufacturing

         To  reduce   overhead   expenses,   along  with  capital  and  staffing
requirements,  the Company currently uses third-party contract  manufacturers to
fulfill its  manufacturing  needs.  All of the chips used by the Company to make
its decoding products are manufactured by outside suppliers and foundries.  Each
of these  suppliers is a sole source of supply to the Company of the  respective
chips produced by such supplier.

         The Company's reliance on independent suppliers involves several risks,
including  the absence of adequate  capacity and reduced  control over  delivery
schedules,  manufacturing  yields,  and costs.  Any delay or interruption in the
supply  of any of the  components  required  for  the  production  of  REALmagic
products  could have a  material  adverse  impact on the sales of the  Company's
products and, thus, on the Company's operating results.


                                      -12-

<PAGE>


Backlog

         Since the Company's  customers  typically expect quick deliveries,  the
Company  seeks to ship  products  within a few weeks of  receipt  of a  purchase
order.  The customer may reschedule  delivery of products or cancel the purchase
order entirely without significant penalty.  Historically, the Company's backlog
has not been  reflective of future  sales.  The Company also expects that in the
near term, its backlog will continue to be not indicative of future sales.

Employees

         As of July 1, 1997, the Company had 81 full-time  employees,  including
43 in research and  development,  15 in  marketing,  sales,  and  support,  9 in
operations, and 14 in finance and administration.

         The Company's  future  success will depend,  in part, on its ability to
continue to attract, retain, and motivate highly qualified technical, marketing,
engineering,  and management  personnel,  who are in great demand. The Company's
employees are not represented by any collective bargaining unit, and the Company
has never  experienced a work stoppage.  The Company  believes that its employee
relations are satisfactory.


                                      -13-

<PAGE>



                                 USE OF PROCEEDS

         The  Company  will not  receive  any  proceeds  from the sale of Shares
hereunder by the Selling Shareholders.


                              SELLING SHAREHOLDERS
<TABLE>
         The  following  table sets forth  certain  information  with respect to
beneficial  ownership of the Company's Common Stock as of August 6, 1997 by each
Selling  Shareholder.  Except as indicated in the  footnotes to this table,  the
persons named in the table have sole voting and investment power with respect to
all  shares of Common  Stock  shown as  beneficially  owned by them,  subject to
community property laws where applicable.

<CAPTION>
                                                  Shares Beneficially                               Shares Beneficially    
                                                     Owned Prior to                                        Owned           
                                                      Offering(1)(2)              Number of         After Offering(1)(2)   
                                              -----------------------------        Shares           ----------------------  
     Name and Address                          Number               Percent      Being Offered      Number        Percent
- -------------------------------------         -----------------------------     --------------      ----------------------
<S>                                            <C>                    <C>        <C>                    <C>         <C>
Banque Edouard Constant(3)...........          968,888                8.7        968,888                0           0
c/o Kernco Trust SA
2, rue Jargonnaut
P.O. Box 6432 CH
1211 Geneva 6
Switzerland

RIC Equity Limited(4)................          121,112                1.1        121,112                0           0
c/o Rana Investment Company
P.O. Box 60148
Riyadh 11545
Saudi Arabia

Gene Jung............................           10,000                *           10,000                0           0
Trinity Capital Advisors, Inc.
369 Pine Street, Suite 310
San Francisco, CA  94114
<FN>
- ---------------------------
*     Represents less than 1%

(1)   The number and percentage of shares beneficially owned is determined under
      rules of the Securities and Exchange  Commission,  and the  information is
      not necessarily  indicative of beneficial ownership for any other purpose.
      Under such rules, beneficial ownership includes any shares as to which the
      individual  has sole or shared voting power or  investment  power and also
      any shares which the individual has the potential  right to acquire within
      two (2) years of the Offering  through the exercise of the Preferred Stock
      or Warrants. See "Plan of Distribution."

(2)   The persons named in the table have sole voting and investment  power with
      respect to all shares of Common Stock shown as beneficially owned by them,
      subject to community  property laws where  applicable and the  information
      contained in the footnotes to this table.

(3)   Includes shares  underlying a warrant  exercisable after December 25, 1997
      for 57,142 shares of Common Stock.

(4)   Includes shares  underlying a warrant  exercisable after December 25, 1997
      for 7,143 shares of Common Stock.
</FN>
</TABLE>


                                      -14-

<PAGE>

                              PLAN OF DISTRIBUTION

         On June 25, 1997,  the Company  entered into a  Subscription  Agreement
with two of the Selling Shareholders (the "Subscription Agreement"), pursuant to
which  those  two  Selling  Shareholders  purchased  certain  shares of Series A
Preferred  Stock that are  convertible  into Common  Stock of the  Company  (the
"Preferred Stock") in an aggregate amount of $4,500,000. The Preferred Stock can
be converted by the Selling  Shareholders  into shares of the  Company's  Common
Stock 120 days  after  its  issuance  at a rate  described  in the  Subscription
Agreement,  and concurrent with the purchase of the Preferred Stock, the Selling
Shareholders  received  warrants  to  purchase  additional  Common  Stock  at an
exercise price in excess of the conversion  price of the Preferred  Stock.  This
Registration Statement has been filed by the Company pursuant to the exercise of
certain  registration  rights  granted  under  the  Subscription  Agreement.  In
addition,  the Company  granted  10,000  shares of Common  Stock to Gene Jung on
behalf of Trinity Capital  Advisors,  Inc. in  consideration  for his efforts in
assisting with the sale of the Preferred Stock.

         The Shares may be sold from time to time by the Selling Shareholders or
by pledgees, donees, transferees or other successors in interest. Such sales may
be made in any one or more transactions  (which may involve block  transactions)
on the Nasdaq  National  Market,  or any  exchange on which the Common Stock may
then be  listed,  in the  over-the-counter  market or  otherwise  in  negotiated
transactions  or a  combination  of such  methods  of  sale,  at  market  prices
prevailing  at the time of sale,  at prices  related to such  prevailing  market
prices or at  negotiated  prices.  The  Selling  Shareholders  may  effect  such
transactions  by  selling  shares  to  or  through   broker-dealers,   and  such
broker-dealers  may sell the  Shares  as agent or may  purchase  such  Shares as
principal  and resell  them for their own account  pursuant to this  Prospectus.
Such  broker-dealers  may  receive  compensation  in the form of  under  writing
discounts,  concessions  or  commissions  from the Selling  Shareholders  and/or
purchasers of the shares, for whom they may act as agent (which compensation may
be in excess of  customary  commissions).  In  connection  with such sales,  the
Selling  Shareholders and any participating  brokers or dealers may be deemed to
be  "underwriters" as defined in the Securities Act. The Company has advised the
Selling Shareholders that Regulation M promulgated under the Securities Exchange
Act of 1934 may apply to its  sales in the  market,  has  provided  the  Selling
Shareholders  with a copy of this  regulation  and has informed them of the need
for delivery of copies of this Prospectus.  The Subscription  Agreements provide
that the  Company  will  indemnify  the  Selling  Shareholders  against  certain
liabilities, including liabilities under the Securities Act.


                                  LEGAL MATTERS

         Certain  legal  matters  relating  to  validity of the shares of Common
Stock  offered  hereby  will be passed  upon for the  Company by Wilson  Sonsini
Goodrich & Rosati, Professional Corporation, Palo Alto, California.


                                     EXPERTS

         The  consolidated   financial  statements  and  the  related  financial
statement  schedule  incorporated  in this  prospectus  by  reference  from  the
Company's  Annual Report on Form 10-K for the fiscal year ended January 31, 1997
have been audited by Deloitte & Touche LLP, independent  auditors,  as stated in
their  report,  which  is  incorporated  herein  by  reference,  and has been so
incorporated in reliance upon the report of such firm given upon their authority
as experts in accounting and auditing.


                                      -15-

<PAGE>



                                TABLE OF CONTENTS
                                                                         Page
                                                                         ----
Available Information..................................................... 2
Incorporation of Certain Documents by Reference........................... 2
Risk Factors.............................................................. 3
The Company............................................................... 6
Use of Proceeds........................................................... 8
Selling Shareholders...................................................... 8
Plan of Distribution..................................................... 10
Legal Matters............................................................ 10
Experts.................................................................. 10

         No  dealer,  sales  representative,   or  any  other  person  has  been
authorized to give any information or to make any  representations in connection
with this offering other than those contained in this Prospectus,  and, if given
or made, such information or  representations  must not be relied upon as having
been authorized by the Company or any of the Underwriters.  This Prospectus does
not  constitute  an  offer  to sell or a  solicitation  of an  offer  to buy any
securities other than the shares of Common Stock to which it relates or an offer
to, or a solicitation of, any person in any jurisdiction  where such an offer or
solicitation would be unlawful.  Neither the delivery of this Prospectus nor any
sale made hereunder shall, under any circum stances,  create an implication that
there has been no change  in the  affairs  of the  Company  or that  information
contained herein is correct as of any date subsequent to the date hereof.


                                1,100,000 Shares

                               SIGMA DESIGNS, INC.

                                  Common Stock

                                  ------------
                                   PROSPECTUS
                                  ------------

                                 ______ __, 1997




                                      -16-

<PAGE>


                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.  Other Expenses of Issuance and Distribution

         The  following  table  sets  forth the costs and  expenses,  other than
underwriting  discounts and commissions,  payable in connection with the sale of
Common Stock being  registered.  All amounts are estimates except the Securities
and Exchange Commission  registration fee and the Nasdaq National Market Listing
Fee.


Securities and Exchange Commission Registration Fee.....          $ 1,460
Nasdaq National Market Listing Fee......................           17,500
Legal Fees and Expenses.................................           60,000
Accounting Fees and Expenses............................           10,000
Blue Sky Fees and Expenses..............................            2,500
Transfer Agent and Registrar Fees.......................            5,000
Miscellaneous...........................................            1,500
         Total..........................................           92,960

Item 15.  Indemnification of Directors and Officers

         Section 317 of the California  Corporations  Code authorizes a court to
award or a corporation's  Board of Directors to grant indemnity to directors and
officers  in terms  sufficiently  broad to  permit  such  indemnification  under
certain  circumstances  for liabilities  (including  reimbursement  for expenses
incurred)  arising  under the  Securities  Act.  Article IV of the  Registrant's
Second Restated  Articles of  Incorporation  and Article VI of the  Registrant's
Bylaws provide for  indemnification  of its directors,  officers,  employees and
other  agents to the maximum  extent  permitted by the  California  Corporations
Code. In addition,  the Registrant has entered into  Indemnification  Agreements
with its officers and directors.

         Insofar as indemnification for liabilities arising under the Securities
Act  may  be  permitted  to  directors,  officers  or  persons  controlling  the
Registrant  pursuant  to the  foregoing  provisions,  the  Registrant  has  been
informed that in the opinion of the  Securities  and Exchange  Commission,  such
indemnification  is against public policy as expressed in the Securities Act and
is therefore unenforceable.

Item 16.  Exhibits and Financial Statement Schedules

         (a)   EXHIBITS

                  4.1      Form of  Subscription  Agreement by and between Sigma
                           and the Buyers.
                  4.2      Form of Registration  Rights Agreement by and between
                           Sigma and the Investors.
                  5.1      Opinion   of  Wilson   Sonsini   Goodrich  &  Rosati,
                           Professional Corporation, counsel for the Registrant.
                  23.1     Independent Auditors' Consent.
                  23.2     Consent   of  Wilson   Sonsini   Goodrich  &  Rosati,
                           Professional Corporation,  counsel for the Registrant
                           (included in Exhibit 5.1).
                  24.1     Power of Attorney.

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

         Schedules  not listed  above  have been  omitted  because  they are not
applicable  or are not  required  or the  information  required  to be set forth
therein is included in the consolidated financial statements or notes thereto.

                                      II-2

<PAGE>


Item 17.  Undertakings

         Insofar as  indemnification  by the Registrant for liabilities  arising
under the Securities Act may be permitted to directors, officers and controlling
persons of the Registrant  pursuant to the foregoing  provisions,  or otherwise,
the  Registrant  has been  advised  that in the  opinion of the  Securities  and
Exchange  Commission such  indemnification is against public policy as expressed
in the  Securities  Act and is,  therefore,  unenforceable.  In the event that a
claim for  indemnification  against such liabilities  (other than the payment by
the  Registrant  of  expenses  incurred  or  paid  by  a  director,  officer  or
controlling  person of the Registrant in the  successful  defense of any action,
suit or proceeding) is asserted by such director,  officer or controlling person
in connection with the securities  being  registered  hereunder,  the Registrant
will,  unless in the  opinion of its  counsel  the  matter  has been  settled by
controlling  precedent,  submit  to a  court  of  appropriate  jurisdiction  the
question  whether  such  indemnification  by  it is  against  public  policy  as
expressed in the Securities  Act and will be governed by the final  adjudication
of such issue.

         The undersigned Registrant hereby undertakes:

         (1) To file, during any period in which offers or sales are being made,
a  post-effective  amendment  to this  Registration  Statement  to  include  any
material  information  with respect to the plan of  distribution  not previously
disclosed  in  the  Registration  Statement  or  any  material  change  to  such
information in the Registration Statement.

         (2) That,  for the  purpose  of  determining  any  liability  under the
Securities Act, each such  post-effective  amendment shall be deemed to be a new
Registration  Statement  relating to the  securities  offered  therein,  and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.

         (3) To remove from registration by means of a post-effective  amendment
any of the securities being registered which remain unsold at the termination of
the offering.

         The  undersigned  Registrant  hereby  undertakes  that, for purposes of
determining  any  liability  under  the  Securities  Act,  each  filing  of  the
Registrant's  annual  report  pursuant to Section  13(a) or Section 15(d) of the
Exchange Act (and, where  applicable,  each filing of an employee benefit plan's
annual  report   pursuant  to  Section  15(d)  of  the  Exchange  Act)  that  is
incorporated by reference in the Registration  Statement shall be deemed to be a
new registration  statement relating to the securities offered therein,  and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.

         The  undersigned  Registrant  hereby  undertakes  that for  purposes of
determining any liability under the Securities Act, the information omitted from
the form of Prospectus filed as part of this Registration  Statement in reliance
upon 430A and contained in a form of Prospectus filed by the Registrant pursuant
to Rule  424(b)(1) or (4) or 497(h) under the  Securities Act shall be deemed to
be part of this Registration Statement as of the time it was declared effective.


                                      II-3

<PAGE>



                                   SIGNATURES

         Pursuant  to the  requirements  of the  Securities  Act  of  1933,  the
Registrant  has duly  caused  this  Registration  Statement  to be signed on its
behalf by the undersigned,  thereunto duly  authorized,  in the City of Fremont,
State of California, on the 6th day of August 1997.

                                   SIGMA DESIGNS, INC.


                                   By: /s/ Thinh Q. Tran
                                       -----------------------------------------
                                           Thinh Q. Tran
                                           Chairman of the Board,
                                           President and Chief Executive Officer



                                POWER OF ATTORNEY

         Know  all men by these  presents,  that  each  person  whose  signature
appears  below  constitutes  and appoints  Thinh Q. Tran (with full power to act
alone),  his true and  lawful  attorney-in-fact  and  agent,  with full power of
substitution,  for  him  and on his  behalf  to  sign,  execute  and  file  this
Registration Statement and any or all amendments (including, without limitation,
post-effective  amendments  and  any  amendment  or  amendments  or  abbreviated
registration   statement   increasing   the  amount  of  securities   for  which
registration is being sought) to this Registration Statement,  with all exhibits
and any and all documents  required to be filed with respect  thereto,  with the
Securities and Exchange  Commission or any regulatory  authority,  granting unto
such  attorney-in-fact and agent full power and authority to do and perform each
and every  act and thing  requisite  and  necessary  to be done in and about the
premises in order to effectuate the same as fully to all intents and purposes as
he or she  might  or  could  do if  personally  present,  hereby  ratifying  and
confirming  all  that  such  attorney-in-fact  and  agent or his  substitute  or
substitutes, may lawfully do or cause to be done by virtue hereof.

<TABLE>
         PURSUANT  TO THE  REQUIREMENTS  OF THE  SECURITIES  ACT OF  1933,  THIS
REGISTRATION  STATEMENT  HAS  BEEN  SIGNED  BY  THE  FOLLOWING  PERSONS  IN  THE
CAPACITIES AND ON THE DATE INDICATED:

<CAPTION>
              SIGNATURE                                           TITLE                                      DATE


<S>                                         <C>                                                        <C> 
/s/  Thinh Q. Tran                              Chairman of the Board, President and Chief             August 6, 1997
- --------------------------------------      Executive Officer (Principal Executive Officer) 
     Thinh Q. Tran                           

/s/  Kit Tsui                                 Director of Finance, Chief Financial Officer,            August 6, 1997
- --------------------------------------     Secretary (Chief Financial and Accounting Officer)
     Kit Tsui                             
  
/s/  William J. Almon                                        Director                                  August 6, 1997
- --------------------------------------
     William J. Almon

/s/  William Wang                                             Director                                 August 6, 1997
- --------------------------------------
     William Wang

*By: /s/                                                                                               August 6, 1997
- --------------------------------------
     Attorney-in-Fact

</TABLE>
                                      II-4


<PAGE>



                                  EXHIBIT INDEX

EXHIBIT NUMBER
- --------------

      4.1              Form of  Subscription  Agreement by and between Sigma and
                       the Buyers.

      4.2              Form of  Registration  Rights  Agreement  by and  between
                       Sigma and the Investors.

      5.1              Opinion of Wilson Sonsini Goodrich & Rosati, Professional
                       Corporation, counsel for the Registrant.

      23.1             Independent Auditors' Consent.

      23.2             Consent of Wilson Sonsini Goodrich & Rosati, Professional
                       Corporation,  counsel  for the  Registrant  (included  in
                       Exhibit 5.1).

      24.1             Power of Attorney. (See page II-4.)


                                      II-5





                                                                     Exhibit 4.1

                         FORM OF SUBSCRIPTION AGREEMENT

         THIS PRIVATE  SECURITIES  SUBSCRIPTION  AGREEMENT (the "Agreement") has
been  executed  by the  undersigned  in  connection  with the sale in a  private
placement  pursuant to Section 4(2) of the  Securities  Act of 1933,  as amended
(the  "Securities  Act"),  of certain  shares of series A convertible  preferred
stock (the  "Preferred  Stock"),  convertible  into shares of common  stock (the
"Common Stock"), and of certain warrants (the "Warrants," and each individually,
a "Warrant")  convertible into shares of Common Stock (the "Warrant Shares" and,
together with the Common Stock issuable upon conversion of the Preferred  Stock,
the "Shares") of Sigma Designs,  Inc. ("Sigma Designs"),  46501 Landing Parkway,
Fremont,  CA 94538, a corporation  organized under the laws of California to the
persons and  entities  listed on the  Schedule  of Buyers  attached as Exhibit A
hereto (the  "Buyers"  and,  individually,  each a "Buyer").  Sigma  Designs and
Buyers (collectively, the "parties") each hereby represents, warrants and agrees
as follows:

         1.      AGREEMENT TO SUBSCRIBE; PURCHASE PRICE.

                  (i) Sigma Designs and Buyers are executing and delivering this
Agreement in reliance upon the exemption from securities  registration  afforded
by Rule 506 under  Regulation D  ("Regulation  D") as  promulgated by the United
States Securities and Exchange Commission ("SEC") under the Securities Act; and

                  (ii) Each Buyer hereby  subscribes for the number of shares of
Preferred Stock,  convertible into Common Stock in accordance with the terms set
forth  in the  Certificate  of  Determination  attached  as  Exhibit  B to  this
Agreement,  specified  opposite each Buyer's name in Column B on the Schedule of
Buyers at a cash  purchase  price of $100.00 per share  payable in United States
Dollars at the Closing, as defined in Paragraph 5 hereof.

                  (iii) Each Buyer shall pay the  purchase  price by  delivering
same day funds in United  States  Dollars  to an  escrow  agent or as  otherwise
agreed  between the parties,  to be delivered to the order of Sigma Designs upon
delivery of the Preferred Stock.

                  (iv) Each Buyer shall each receive  from Sigma  Designs at the
Closing,  for no additional  consideration,  a Warrant to purchase the number of
shares of Common  Stock set forth  opposite its name in Column C on the Schedule
of Buyers.  The Warrant  shall be  exercisable  under the terms set forth in the
Form of Warrant attached as Exhibit C to this Agreement.

         2.       BUYER'S REPRESENTATIONS AND AGREEMENTS. Each Buyer represents,
warrants and agrees as follows:

                  (i) Each Buyer  understands  that the Preferred  Stock and the
Warrant  have not  been  registered  under  the  Securities  Act,  or any  other
applicable securities law, and, accordingly, none of the Preferred Stock nor the
Warrant may be offered, sold,  transferred,  pledged,  hypothecated or otherwise
disposed  of unless  registered  pursuant  to, or in a  transaction  exempt from
registration under, the Securities Act and any other applicable securities law;

                  (ii) Each Buyer is an "accredited investor" within the meaning
of Rule 501(a)(1),  (2), (3), or (7) of Regulation D (an "Accredited  Investor")
that is acquiring the Preferred Stock and the Warrant either for its own account
or as a fiduciary or agent for one or more institutional accounts, each of which
is an  Accredited  Investor.  Each Buyer has such  knowledge  and  experience in
financial and business  matters that they are capable of  evaluating  the merits
and risks of an investment in the Preferred Stock and the Warrant. Buyer has had
a

                                       -1-

<PAGE>



reasonable  opportunity  to ask  questions  of and  receive  answers  from Sigma
Designs concerning Sigma Designs and the offering of the Preferred Stock and the
Warrant.  Buyer is not  subscribing for the Preferred Stock and the Warrant as a
result  of  or  pursuant  to  any  advertisement,   article,  notice,  or  other
communication  published  in  any  newspaper,  magazine,  or  similar  media  or
broadcast  over   television  or  radio.   Buyer  is  aware  that  it  (or  such
institutional  account)  may  be  required  to  bear  the  economic  risk  of an
investment in the Preferred Stock and the Warrant for an indefinite  period, and
it (or such institutional  account ) is able to bear such risk for an indefinite
period;

                  (iii) Buyer is acquiring the  Preferred  Stock and the Warrant
for its own account or for one or more  institutional  accounts as  described in
Paragraph 2(ii) hereof, in each case for investment purposes and not with a view
to, or for offer or sale in connection with, any  distribution  thereof (subject
to any requirement of law that the disposition of their property or the property
of such  institutional  account or accounts remain within their control).  Buyer
agrees on its own behalf  and on behalf of any such  institutional  account  for
which it is  acquiring  the  Preferred  Stock and the Warrant to offer,  sell or
otherwise  transfer any  Preferred  Stock,  Warrant or Shares only to Accredited
Investors  (subject  to any  requirement  of law that the  disposition  of their
property or the property of such institutional account or accounts remain within
its control) in  conformity  with the  Securities  Act and any other  applicable
securities  law  and  with  the  restrictions  on  transfer  set  forth  on  the
certificate(s) evidencing the Preferred Stock, the Warrant and Shares; provided,
however, that by making the representations herein, each Buyer does not agree to
hold the Preferred  Stock,  Warrant or Shares for any minimum or other  specific
term and reserves the right to dispose of the Preferred Stock, Warrant or Shares
at any  time  in  accordance  with  or  pursuant  to an  effective  registration
statement or an exemption under the Securities Act.

                  (iv)  Each  Buyer  acknowledges  that  Sigma  Designs  or  any
transfer  agent of Sigma Designs shall  register the transfer or exchange of any
of the  Preferred  Stock or  Shares  only  upon  receipt  of the  certificate(s)
evidencing  such  Preferred  Stock or Shares with the transfer  notice set forth
thereon appropriately  completed and upon receipt in writing from the transferee
or the  recipient  of such Shares in such  transfer or exchange (as the case may
be) of a certificate setting forth the representations in Paragraph 2 hereof;

                  (v) Each Buyer acknowledges that Sigma Designs and others will
rely  upon  the   truth  and   accuracy   of  the   foregoing   acknowledgments,
representations and agreements and further agrees that if, prior to the closing,
any of such acknowledgments, representations and agreements made by Buyer are no
longer accurate, Buyer will promptly notify Sigma Designs;

                  (vi) Each  Buyer  has  received  all  information  from  Sigma
Designs, including but not limited to Sigma Designs' latest Form 10-K, all Forms
10-Q and 8-K filed  thereafter,  and the Proxy  Statement  for its latest fiscal
year (collectively, the "Public Documents") and the Private Placement Memorandum
dated June 25,  1997 (the  "Private  Placement  Memorandum")  prepared  by Sigma
Designs  and  Buyer  acknowledges  this  information  is  sufficient  to make an
informed business decision;

                  (vii) This Agreement and the matters  contemplated herein have
been  duly  authorized,  and this  Agreement  has  been  validly  executed,  and
delivered on behalf of Buyer and is a valid and binding agreement enforceable in
accordance  with its  terms,  subject  to  general  principles  of equity and to
bankruptcy  or  other  laws  affecting  the  enforcement  of  creditors'  rights
generally;

                  (viii) Buyer has no existing  short  position  with respect to
the common  stock of Sigma  Designs and agrees not to enter into any short sales
or other hedging  transactions with respect to the common stock of Sigma Designs
at any time after the execution of this Agreement by Buyer and prior to the date
on which Buyer files a notice of conversion with Sigma Designs;


                                       -2-

<PAGE>


                  (ix) Each  Buyer  agrees  not to  effectuate  or cause a third
party to effectuate a sale of, offer for sale, or solicit a purchase or offer to
purchase Sigma  Designs'  Common Stock with the intention of causing a reduction
in the Conversion Price (as defined in the Certificate of Designation);

                  (x)  Each  Buyer  agrees  not to use its  ability  to  convert
Preferred  Stock or exercise the Warrant such that such  conversion  or exercise
would result in Buyer  beneficially  owning more than 4.9999% of the outstanding
shares of the  Common  Stock.  Sigma  Designs  may rely upon  Buyer's  notice of
conversion or exercise that such  conversion or exercise will not cause Buyer to
exceed  such  4.9999%  limit  and  Sigma  shall in no way be  responsible  for a
properly  executed  conversion  or exercise  causing Buyer to exceed the 4.9999%
limit; and

                  (xi) Each Buyer  further  agrees that,  at all times after the
execution  of this  Agreement  by Buyer  and  prior  to the  date on  which  the
Preferred Stock becomes  convertible,  they will each keep their purchase of the
Preferred Stock, Warrant or the Shares  confidential,  except as required by law
and except as necessary in the ordinary course of business of either Buyer.

         3.  SIGMA  DESIGNS'  REPRESENTATIONS  AND  AGREEMENTS.   Sigma  Designs
represents, warrants and agrees as follows:

                  (i) Sigma Designs and its subsidiaries  are corporations  duly
organized  and  validly  existing  in  good  standing  under  the  laws  of  the
jurisdiction in which they are  incorporated,  and have the requisite  corporate
power to own  their  properties  and to carry on  their  business  as now  being
conducted.  Each of Sigma Designs and its  subsidiaries  is duly  qualified as a
foreign corporation to do business and is in good standing in every jurisdiction
in which the nature of the  business  conducted  by it makes such  qualification
necessary,  except to the extent  that the failure to be so  qualified  or be in
good standing would not have a material  adverse effect on Sigma Designs and its
subsidiaries taken as a whole (a "Material Adverse Effect").

                  (ii)  As  set  forth  in  the  Second  Restated   Articles  of
Incorporation  of Sigma Designs,  as amended (the "Articles of  Incorporation"),
the authorized  capital stock of Sigma Designs consists of 22,000,000  shares of
Common Stock, of which 11,147,116  shares were issued and outstanding at June 9,
1997,  and 2,000,000  shares of Preferred  Stock,  none of which were issued and
outstanding prior to the date hereof.  All of such outstanding  shares have been
validly issued and are fully paid and  nonassessable.  No shares of Common Stock
or Preferred Stock are subject to preemptive  rights or any other similar rights
or any liens or encumbrances  suffered or permitted by Sigma Designs.  There are
no securities or instruments containing anti-dilution or similar provisions that
will be triggered by the issuance of the  Preferred  Stock,  the Warrants or the
Shares.  Sigma  Designs has  furnished or made  available to the Buyers true and
correct copies of Sigma Designs's  Articles of Incorporation  and By-laws and as
in  effect  on the date  hereof,  and the  terms of all  outstanding  securities
convertible  into or exercisable for Common Stock and the material rights of the
holders thereof in respect thereto.

                  (iii) Neither Sigma Designs,  nor any of its  affiliates,  nor
any person acting on its or their behalf has,  directly or indirectly,  made any
offers or sales of any  security or  solicited  any offers to buy any  security,
under circumstances that would require  registration of the Preferred Stock, the
Warrants,  or the Shares  under the  Securities  Act or cause this  offering  of
Preferred  Stock or the Shares to be  integrated  with prior  offerings by Sigma
Designs  for  purposes  of the  Securities  Act or  any  applicable  stockholder
approval provisions.

                  (iv)  Neither  Sigma  Designs nor any of its  subsidiaries  is
involved in any labor  dispute nor, to the  knowledge of Sigma Designs or any of
its subsidiaries,  is any such dispute threatened. None of Sigma Designs' or its
subsidiaries'  employees  is a  member  of a union  and  Sigma  Designs  and its
subsidiaries believe that their relations with their employees are good.


                                       -3-

<PAGE>



                  (v) Except as disclosed in the public documents, Sigma Designs
and its subsidiaries  have sufficient  trademarks,  trade names,  patent rights,
copyrights, licenses, approvals and governmental authorizations to conduct their
businesses  as  described  in  the  Public  Documents;  the  expiration  of  any
trademarks,  trade names,  patent  rights,  copyrights,  licenses,  approvals or
governmental  authorizations would not have a Material Adverse Effect; and Sigma
Designs has no knowledge of any material  infringement by it or its subsidiaries
of trademark,  trade name rights,  patent rights,  copyrights,  licenses,  trade
secret or other  similar  rights of  others,  and there is no claim  being  made
against  Sigma  Designs or its  subsidiaries  regarding  trademark,  trade name,
patent,  copyright,  license,  trade  secret or other  infringement  which would
reasonably be expected to have a Material Adverse Effect.

                  (vi) Sigma Designs and its subsidiaries are (i) in compliance,
in all material respects,  with any and all applicable foreign,  federal,  state
and local laws and  regulations  relating to the  protection of human health and
safety,  the environment or hazardous or toxic substances or wastes,  pollutants
or contaminants ("Environmental Laws"), (ii) have received all material permits,
licenses or other approvals required of them under applicable Environmental Laws
to conduct  their  respective  businesses  and (iii) are in  compliance,  in all
material respects,  with all terms and conditions of any such permit, license or
approval.

                  (vii) Any real  property  and  facilities  held under lease by
Sigma Designs and its subsidiaries are held by them under valid,  subsisting and
enforceable  leases  with  such  exceptions  as  are  not  material  and  do not
materially  interfere  with the use made of such property and buildings by Sigma
Designs and its subsidiaries.

                  (viii) Each of Sigma  Designs and its  subsidiaries  maintains
insurance  of the types and in the amounts  generally  deemed  adequate  for its
business all of which insurance is in full force and effect.

                  (ix)  Sigma   Designs   and  its   subsidiaries   possess  all
certificates,  authorizations  and permits  issued by the  appropriate  federal,
state or foreign  regulatory  authorities  necessary to conduct their respective
businesses with such  exceptions that would not have a Material  Adverse Effect,
and neither  Sigma  Designs nor any such  subsidiary  has received any notice of
proceedings  relating to the revocation or modification of any such certificate,
authorization  or permit,  with such  exceptions  that would not have a Material
Adverse Effect.

                  (x) Sigma  Designs  and each of its  subsidiaries  maintain  a
system  of  internal   accounting  controls  sufficient  to  provide  reasonable
assurance that (i)  transactions  are executed in accordance  with  management's
general or specified authorizations, (ii) transactions are recorded as necessary
to permit  preparation  of financial  statements  in conformity  with  generally
accepted  accounting  principles  and to maintain  asset  accountability,  (iii)
access to assets is permitted only in accordance  with  management's  general or
specific  authorization  and (iv) the  recorded  accountability  for  assets  is
compared with the existing assets at reasonable intervals and appropriate action
is taken with respect to any differences.

                  (xi)  Neither  Sigma  Designs nor any of its  subsidiaries  is
subject to any charter,  corporate or other legal restriction,  or any judgment,
decree,  order,  rule or  regulation  which in the  judgment of Sigma  Designs's
executive officers has a Material Adverse Effect.  Neither Sigma Designs nor any
of its  subsidiaries  is a party  to any  contract  or  agreement  which  in the
judgment of Sigma Designs's executive officers has a Material Adverse Effect.

                  (xii) Sigma  Designs has filed all  material  Federal,  State,
local and foreign  income tax returns  which have been  required to be filed and
have paid all  material  taxes  indicated  by said  returns and all  assessments
received  by them or any of them to the extent  that such taxes have  become due
and are not  being  contested  in good  faith.  All tax  liabilities  have  been
adequately provided for in the financial statements of Sigma Designs.

                  (xiii)   Sigma   Designs   has  not   conducted   any  general
solicitation or general advertising (as defined in Regulation D) with respect to
any of its securities;

                                       -4-

<PAGE>


                  (xiv) The Preferred Stock and Shares when issued and delivered
will be duly and validly  authorized and issued,  fully-paid and  nonassessable,
free and clear of any taxes, liens, encumbrances,  charges, or adverse claims of
any nature  whatsoever,  and will not subject  the  holders  thereof to personal
liability by reason of being such holders;

                  (xv) This Agreement,  the Registration  Rights Agreement,  the
Warrants,  and any  related  agreements,  have  been  duly  authorized,  validly
executed  and  delivered  on behalf of Sigma  Designs  and are valid and binding
agreements  in  accordance  with  their  respective  terms,  subject  to general
principles of equity and to bankruptcy or other laws  affecting the  enforcement
of creditors' rights generally;

                  (xvi)  The  execution  and  delivery  of this  Agreement,  the
Registration  Rights  Agreement,  the Warrants and any related agreement and the
consummation  of the  issuance of the  Preferred  Stock and the Warrants and the
transactions  contemplated  by such agreements do not and will not conflict with
or result in a breach by Sigma Designs of any of the terms or provisions  of, or
constitute a default  under,  the Articles of  Incorporation  or bylaws of Sigma
Designs,  or to the knowledge of the executive  officers of Sigma  Designs,  any
indenture,  mortgage,  deed  of  trust,  or  any  statute,  rule  or  regulation
applicable to Sigma Designs or its  subsidiaries or other material  agreement or
instrument  to  which  Sigma  Designs  is a party  or by  which it or any of its
properties or assets are bound, or any existing  applicable decree,  judgment or
order of any court, federal or state regulatory body,  administrative  agency or
other  governmental  body having  jurisdiction  over Sigma Designs or any of its
properties or assets, or to the knowledge of the Sigma Designs any statute, rule
or regulation  applicable to Sigma Designs or its subsidiaries,  except for such
conflict, breach or default as would not result in a Material Adverse Effect;

                  (xvii) No authorization, approval or consent of or filing with
any federal,  state or local  governmental  body of the United States is legally
required  for the  issuance  and  sale of the  Shares  as  contemplated  by this
Agreement or any related agreements;

                  (xviii) Neither the Public Documents nor the Private Placement
Memorandum,  as of their  respective  dates,  contains any untrue statement of a
material fact or omits to state any material fact necessary in order to make the
statements  therein, in the light of the circumstance under which they are made,
not  misleading.  Since  January 31,  1997,  there has been no material  adverse
development  in the business,  properties,  operations,  financial  condition or
results of  operations  of Sigma  Designs,  except as disclosed in the documents
referred to in Paragraph 2(vii) hereof.

                  (xix)  Sigma  Designs  will  issue  one or  more  certificates
representing the Preferred Stock in the name of each Buyer in such denominations
to be specified by each Buyer prior to closing. The Preferred Stock and Warrants
will bear the  restrictive  legend  specified in Paragraph 4 of this  Agreement.
Sigma  Designs  further   warrants  that  no   instructions   other  than  these
instructions  and stop transfer  instructions  to give effect to Paragraph  2(i)
hereof will be given at any time to the transfer  agent and also  warrants  that
the Preferred Stock,  Warrants and Shares shall otherwise be transferable on the
books  and  records  of Sigma  Designs  as and to the  extent  provided  in this
Agreement, subject to compliance with Federal and State securities laws. As soon
as  commercially  practicable  after the date hereof,  Sigma  Designs  agrees to
furnish new  instructions  to the transfer agent  instructing  them to issue the
Common Stock without a restrictive  legend,  but only if and when a registration
statement  registering  the  resale  of such  Common  Stock  has  been  declared
effective  by the SEC.  Nothing in this  Paragraph  shall affect in any way each
Buyer's obligations and agreement to comply with all applicable  securities laws
upon resale of the Shares.  Sigma  Designs  shall  promptly  notify the Transfer
Agent of the effectiveness or suspension of a registration statement registering
the Shares for resale.

                  (xx) There is no action, suit, notice of violation, proceeding
or investigation pending or, to the best knowledge of Sigma Designs,  threatened
against or affecting  Sigma Designs or any of its  subsidiaries  of any of their
respective  properties  before or by any court,  governmental or  administrative
agency or regulatory authority

                                       -5-

<PAGE>



which relates to the validity of  enforceability of any documents related to the
transaction contemplated hereby, the Preferred Stock, the Warrant, or the Shares
which may reasonably likely result in a Material Adverse Effect.

                  (xxi)  Sigma  Designs  is,  and at the  Closing  Date will be,
eligible to register securities for resale with the SEC under Form S-3.

                  (xxii) Neither Sigma Designs nor any of its subsidiaries is in
default under or in violation of (i) any indenture,  loan, credit agreement,  or
any other  agreement or instrument  by which it is bound,  (ii) any order of any
court,  arbitrator or governmental body or (iii) any statute, rule or regulation
of any governmental  authority,  except in the case of both (i) and (ii) as does
not have a Material Adverse Effect.

         4.       LEGENDS.

         Each  certificate  evidencing the Preferred Stock, the Warrants and the
Shares shall bear a legend  substantially  to the effect of Paragraphs  2(i) and
2(ii)  above and this  Section  4. Such  legend  shall be in  substantially  the
following form:

                  "THE SECURITIES  EVIDENCED BY THIS  CERTIFICATE  HAVE NOT BEEN
                  REGISTERED  UNDER THE U.S.  SECURITIES ACT OF 1933, AS AMENDED
                  (THE "ACT" OR THE "SECURITIES  ACT"), OR ANY OTHER  APPLICABLE
                  SECURITIES  LAWS AND HAVE  BEEN  ISSUED  IN RELI  ANCE UPON AN
                  EXEMPTION   FROM  THE   REGISTRATION   REQUIRE  MENTS  OF  THE
                  SECURITIES ACT AND SUCH OTHER  SECURITIES  LAWS.  NEITHER THIS
                  SECURITY  NOR ANY  INTEREST  OR PARTICI  PATION  HEREIN MAY BE
                  REOFFERED, SOLD, ASSIGNED, TRANS FERRED, PLEDGED,  ENCUMBERED,
                  HYPOTHECATED  OR OTHER WISE DISPOSED OF, EXCEPT PURSUANT TO AN
                  EFFECTIVE REGIS TRATION STATEMENT UNDER THE ACT OR PURSUANT TO
                  A TRANS  ACTION  WHICH,  IN AN OPINION  OF COUNSEL  REASONABLY
                  SATIS FACTORY TO SIGMA DESIGNS, IS EXEMPT FROM, OR NOT SUBJECT
                  TO, SUCH  REGISTRATION.  THE HOLDER OF THIS CERTIFICATE IS THE
                  BENEFICIARY OF CERTAIN  OBLIGATIONS OF SIGMA DESIGNS SET FORTH
                  IN A PRIVATE SECURITIES  SUBSCRIPTION  AGREEMENT BETWEEN SIGMA
                  DESIGNS,  INC. AND [BUYER]  DATED JUNE 25, 1997. A COPY OF THE
                  AFORESAID  SUBSCRIPTION AGREEMENT EVIDENC ING SUCH OBLIGATIONS
                  MAY BE OBTAINED FROM SIGMA DESIGNS' EXECUTIVE OFFICES."

                  Upon conversion of the Preferred Stock and the exercise of the
Warrants,  Sigma  Designs  shall issue a Common Stock  certificate  without such
legend to the holder of such  shares if and to the  extent  that (a) the SEC has
declared a  registration  statement  effective  under which such Common Stock is
sold or (b) such holder has  provided  Sigma  Designs with an opinion of counsel
reasonably  acceptable  to Sigma  Designs to the effect  that a public sale or a
transfer of such security may be made without  registration under the Securities
Act, or (c) such holder has provided  Sigma Designs with  reasonable  assurances
that such security can be sold free of any volume  limitations  pursuant to Rule
144 under the Securities Act (or a successor thereto).

                  The  certificates  representing  the  Warrants,  the shares of
Preferred  Stock and  underlying  Common Stock shall also bear any other legends
required by applicable  Federal or state securities laws, which legends shall be
removed when not required in accordance with this Section 4.


                                       -6-

<PAGE>



         5.       COVENANTS.

                  (i) Each party shall use its reasonable best efforts timely to
satisfy  each  of the  conditions  to be  satisfied  by it as  provided  in this
Agreement.

                  (ii) Sigma Designs agrees to file a Form D with respect to the
Preferred  Stock,  the Warrants and the Shares as required  under  Regulation D.
Sigma Designs  shall,  on or before the Closing Date,  take such action as Sigma
Designs shall reasonably  determine is necessary to qualify the Preferred Stock,
the Warrants,  and the Shares for, or obtain  exemption for the Preferred Stock,
the Warrants,  and the Shares, for sale to the Buyers at the Closing pursuant to
this Agreement under  applicable  securities or "Blue Sky" laws of the states of
the United States.

                  (iii) Until the earlier of (i) the date as of which the Buyers
may  sell  all of  the  Shares  without  restriction  pursuant  to  Rule  144(k)
promulgated under the Securities Act (or successor thereto), or (ii) the date on
which  (A) the  Investors  shall  have sold all the  Shares  and (B) none of the
Preferred Stock or Warrants is outstanding (the  "Registration  Period"),  Sigma
Designs shall file all reports required to be filed with the SEC pursuant to the
Exchange Act of 1934, as amended (the "Exchange  Act"),  and Sigma Designs shall
not  terminate  its  status  as an issuer  required  to file  reports  under the
Exchange Act even if the Exchange  Act or the rules and  regulations  thereunder
would otherwise permit such termination.

                  (iv) Sigma  Designs will use the proceeds from the sale of the
Preferred Stock for  substantially  the same purposes and in  substantially  the
same amounts as indicated in the Private Placement Memorandum.

                  (v) Sigma  Designs  shall take all action  necessary to at all
times have  authorized,  and reserved for the purpose of issuance,  no less than
200% of the number of shares of Common  Stock needed to provide for the issuance
of the Shares.

                  (vi) Sigma  Designs shall  promptly  secure the listing of the
Shares upon each national  securities exchange or automated quotation system, if
any,  upon which  shares of Common  Stock are then  listed  (subject to official
notice of issuance)  and shall  maintain,  so long as any other shares of Common
Stock shall be so listed,  such listing of all Shares from time to time issuable
upon  conversion  of the  Preferred  Stock and exercise of the  Warrants.  Sigma
Designs shall  maintain the Common  Stock's  authorization  for quotation in the
over-the  counter  market.  Sigma Designs shall  promptly  provide to each Buyer
copies of any notices it receives  regarding  the continued  eligibility  of the
Common Stock for trading in the over-the-counter market.

                  (vii) Unless Sigma Designs otherwise consents in writing, each
Buyer shall take such  action as may be  required  so that all of the  Preferred
Stock owned by such Buyer is voted in accordance with the  recommendation of the
Board of Directors of Sigma  Designs on all matters to be voted on by holders of
Sigma Designs'  outstanding  Preferred Stock (including any matters  requiring a
class  vote of the  outstanding  Preferred  Stock)  in not  less  than  the same
proportion  as the votes cast by holders of Sigma  Designs'  outstanding  Common
Stock with respect to such matters.  Each Buyer,  as a holder of shares of Sigma
Designs'  Preferred  Stock  shall be  present,  in person  or by  proxy,  at all
meetings of shareholders of Sigma Designs,  so that all shares of Sigma Designs'
outstanding  Preferred Stock  beneficially owned by the Buyer may be counted for
the purposes of determining the presence of a quorum at such meetings.

         6.  TRANSFER  AGENT  INSTRUCTIONS.  Pursuant  to  Paragraph  2(iii) and
Section 4 of this Agreement,  Sigma Designs shall issue irrevocable instructions
to its  transfer  agent to issue  certificates,  registered  in the name of each
Buyer,  for the  Shares in such  amounts as  specified  from time to time by the
Buyers to Sigma Designs upon  conversion  of the Preferred  Stock or exercise of
the  Warrants  (the  "Irrevocable  Transfer  Agent   Instructions").   Prior  to
registration of the Shares under the Securities Act, all such certificates shall
bear the

                                       -7-

<PAGE>



restrictive  legend  specified  in Section 4 of this  Agreement.  Sigma  Designs
warrants  that  no  instruction  other  than  the  Irrevocable   Transfer  Agent
Instructions  referred to in this Paragraph,  and stop transfer  instructions to
give  effect  to  Section  4  hereof  (in  this  case of the  Shares,  prior  to
registration  of such shares  under the  Securities  Act) will be given by Sigma
Designs to its transfer agent and that the Preferred  Stock,  the Warrants,  and
the Shares shall  otherwise be freely  transferable  on the books and records of
Sigma Designs as and to the extent provided in this Agreement,  the Registration
Rights Agreement,  the Warrants and applicable laws,  including securities laws.
Nothing in this Paragraph  shall affect in any way the Buyers'  obligations  and
agreement  to comply  with all  applicable  securities  laws upon  resale of the
Preferred  Stock,  the Warrants,  or the Shares.  If either (a) a Buyer provides
Sigma Designs with an opinion of counsel,  reasonably  satisfactory  in form and
substance to Sigma Designs,  that  registration of a resale by such Buyer of any
of the  Preferred  Stock,  the  Warrant,  or  Shares is not  required  under the
Securities Act or (b) its Shares are registered  under the Securities Act, Sigma
Designs  shall  permit the  transfer,  and, in the case of the Shares,  promptly
instruct its transfer agent to issue one or more  certificates  in such name and
in such  denominations  as specified by such Buyer.  Sigma Designs  acknowledges
that a breach by it of its obligations  hereunder will cause irreparable harm to
the Buyer by vitiating  the intent and purpose of the  transaction  contemplated
hereby.  Accordingly,  Sigma Designs  acknowledges  that the remedy at law for a
breach of its obligations under this Paragraph will be inadequate and agrees, in
the event of a breach or threatened breach by Sigma Designs of the provisions of
this Paragraph that the Buyer  requesting,  in accordance  with this  Agreement,
Sigma  Designs to take such action shall be  entitled,  in addition to all other
available  remedies,  to an  injunction  restraining  any breach  and  requiring
immediate issuance and transfer.

         7.  CLOSING.  Share  certificates  shall be delivered to Buyers and the
funds  therefor  shall be  delivered  to Sigma  Designs  on June 25,  1997  (the
"Closing") or at such time to be mutually agreed.

         8. CONDITIONS TO CLOSING OF BUYERS. The Buyers' obligations to purchase
the  Preferred  Stock and the Warrants at the Closing are, at the option of each
Buyer, subject to the fulfillment on or prior to the Closing Date of each of the
following conditions:

                  (i)  Delivery of  certificate(s)  representing  the  Preferred
Stock as  described  in  Paragraph  1(ii)  hereto and a Warrant as  described in
Paragraph 1(iv) hereto,

                  (ii)  Delivery  of an opinion  of counsel to Sigma  Designs in
substantially the form attached hereto as Exhibit D; and

                  (iii) Sigma  Designs  and  Buyers  shall have  entered  into a
Registration Rights Agreement substantially in the form of Exhibit E hereto.

         9.  CONDITIONS  TO CLOSING OF SIGMA  DESIGNS.  The  obligation of Sigma
Designs to sell and issue the  Preferred  Stock and the  Warrants at the Closing
is, at the option of Sigma Designs,  subject to the fulfillment of the following
conditions:

                  (i) Delivery into escrow or otherwise as agreed between Buyers
and Sigma Designs by Buyers of the amount set forth in Paragraph 1 hereof.

                  (ii) Sigma  Designs  and  Buyers  shall  have  entered  into a
Registration Rights Agreement substantially in the form of Exhibit E hereto.

                  (iii) The Certificate of  Determination  shall have been filed
with the Secretary of State of the State of California.


                                       -8-

<PAGE>



         10.  EXPENSES.  Sigma  Designs and the Buyers shall each bear their own
expenses  and legal fees with  respect to this  Agreement  and the  transactions
contemplated  hereby;  except  that,  assuming a  successful  completion  of the
offering, Sigma Designs will pay at the Closing the reasonable legal fees of the
Buyers  (up to a maximum  total of $10,000  for  Buyers to be divided  among the
Buyers on a pro rata basis derived from the  proportion of Preferred  Stock each
Buyer holds upon the Closing)  and  reasonable  expenses  upon receipt of a bill
therefor, incurred by counsel to the Buyers.

         11. GOVERNING LAW; INTERPRETATION.  This Agreement shall be governed by
and  construed in accordance  with the laws of the State of  California  without
giving  effect to the  provisions  governing  the conflict of laws.  The parties
jointly  consent to personal  jurisdiction in any state or federal court located
in the state of California, waive any objection as to jurisdiction or venue, and
agree  not to  assert  any  defense  based  on lack of  jurisdiction  or  venue.
Facsimile signatures of this agreement shall be binding on all parties hereto.

         12. CONVERSION.  Sigma Designs shall use its reasonable best efforts to
issue and deliver to each Buyer a certificate or certificates  for the number of
Common Stock to which such Buyer shall be entitled within five (5) business days
after such Buyer has fulfilled  all  conditions  required for  conversion as set
forth in this Agreement (the "Deadline"). Sigma Designs understands that a delay
in the issuance of the Common Stock beyond the Deadline could result in economic
loss to such Buyer.  As  compensation  to such Buyer for such loss, and not as a
penalty,  Sigma Designs agrees to pay liquidated  damages to such Buyer for late
issuance of Common  Stock upon  conversion  in the amount of one percent (1%) of
the requested  conversion amount, per day, beginning on the sixth (6th) business
day from the date of  receipt  by Sigma  Designs  of a duly  executed  notice of
conversion, provided that the original Preferred Stock to be converted have been
delivered to Sigma Designs within such time period,  all in accordance with this
Agreement,  the Preferred Stock and the requirements of Sigma Designs'  transfer
agent. Said liquidated damages shall accrue each day through the date the Common
Stock  are  issued  to such  Buyer  upon  conversion,  and shall be paid by wire
transfer to an account designated by such Buyer upon the earlier to occur of (i)
issuance of the Shares to such Buyer,  or (ii) each monthly  anniversary  of the
receipt by Sigma Designs of such Buyer's  notice of  conversion.  Nothing herein
shall waive Sigma Designs'  obligations to deliver Common Stock upon  conversion
of the Preferred Stock.

                  Sigma Designs  agrees that, in addition to any other  remedies
which may be available to a Buyer requesting  conversion of its Preferred Stock,
in the event Sigma Designs fails for any reason to effect delivery to such Buyer
of  certificates  representing  Common  Stock  within  five  (5)  business  days
following receipt by Sigma Designs of a notice of conversion, such Buyer may, at
its sole  election,  revoke the notice of  conversion  by delivering a notice of
such effect to Sigma Designs,  whereupon Sigma Designs and such Buyer shall each
be restored to their respective positions  immediately prior to delivery of such
notice of conversion.

         13. NOTICE. All notices and other communications  required or permitted
hereunder  shall be in  writing  and  shall be  deemed  effectively  given  upon
delivery  to the party to be  notified  in person or upon  delivery  by  courier
service  or upon  delivery  after  deposit  with  the  United  States  mail,  by
registered or certified mail, postage prepaid, or upon receipt by the party of a
facsimile  copy,  addressed (a) if to a Buyer, at such Buyer's address set forth
in Exhibit A, or at such other address as such Purchaser shall have furnished to
Sigma Designs in writing,  or (b) if to any other holder of any Shares,  at such
address as such holder shall have furnished Sigma Designs in writing,  or, until
any such holder so  furnishes  an address to Sigma  Designs,  then to and at the
address of the last  holder of such  Shares who has so  furnished  an address to
Sigma Designs,  or (c) if to Sigma Designs,  one copy should be sent to at 46501
Landing  Parkway,  Fremont,  CA 94538,  and  addressed  to the  attention of the
Corporate  Secretary,  or at such  other  address  as Sigma  Designs  shall have
furnished to the Purchasers.

         14. ARBITRATION;  REMEDIES. Any dispute that arises between the parties
to this Agreement  shall first be submitted for resolution to arbitration  under
the  rules  of the  American  Arbitration  Association  of Santa  Clara  County,
California. In the event of a breach or a threatened breach by any party to this
Agreement of its


                                       -9-

<PAGE>



obligations  under this  Agreement,  any party  injured or to be injured by such
breach  will be  entitled  to  specific  performance  of its  rights  under this
Agreement or to injunctive relief, in addition to being entitled to exercise all
rights provided in this Agreement and granted by law. The parties agree that the
provisions of this Agreement shall be specifically enforceable,  it being agreed
by the parties that the remedy at law, including monetary damages, for breach of
any such  provision  will be inadequate  compensation  for any loss and that any
defense or objection in any action for specific performance or injunctive relief
that a remedy at law would be adequate is waived.

         15.  COUNTERPARTS.  This  Agreement  may be  executed  in any number of
counterparts, each of which may be executed by less than all of the Buyers, each
of which  shall be  enforceable  against  the parties  actually  executing  such
counterparts, and all of which together shall constitute one instrument.

                                      -10-



<PAGE>
<TABLE>

                                                       Exhibit A

                                                  Schedule of Buyers


<CAPTION>
                                                              A                        B                      C
                                                --------------------------   --------------------   ------------------------
                                                                                    Number
                                                                                   of Shares
                                                          Aggregate              of Preferred             Number of
              Name of Purchaser                        Purchase Price                Stock              Warrant Shares
- ----------------------------------------------- --------------------------   --------------------   ------------------------
<S>      <C>                                           <C>                           <C>                     <C>   
1.       Banque Edouard Constant                       $4,000,000.00                 40,000                  57,142
2.       RIC Equity Limited                               500,000.00                  5,000                   7,143
                                                                        
</TABLE>





   Address of Purchasers
   ---------------------

1.       Banque Edouard Constant
         Registered Address:        11 Cours de Rive, CH 1211 Geneva, 3,
                                    Switzerland
                                    Attention:  Maria Luisa Agustoni
         Mailing Address:           KERNCO Trust SA
                                    2, rue Jargonnant
                                    P.O. Box 6432 CH, 1211 Geneva 6,
                                    Switzerland
                                    Attention:  Sunder Advani

2.       RIC Equity Limited
         Registered Address:        E&Y Corporate Services (Cayman Islands) Ltd.
                                    P.O. Box 1034, One Capital Place,
                                    George Town, Grand Cayman, Cayman Islands,
                                    British West Indies
         Mailing Address:           c/o Rana Investment Company
                                    P.O. Box 60148, Riyadh 11545
                                    Saudi Arabia
                                    Attention:  Najmul Hasnain



<PAGE>



                                    Exhibit B

                          Certificate of Determination


                         CERTIFICATE OF DETERMINATION OF

                   PREFERENCES OF SERIES A PREFERRED STOCK OF

                               SIGMA DESIGNS, INC.


         The undersigned, Thinh Q. Tran and Kit Tsui, hereby certify that:

         1. They are the duly elected President and Secretary,  respectively, of
Sigma Designs, Inc., a California corporation (the "Corporation").

         2. The Corporation  hereby designates Fifty Thousand (50,000) shares of
Series A Preferred Stock.

         3. None of the shares of the Series A Preferred Stock have been issued.

         4. Pursuant to authority  given by the  Corporation's  Second  Restated
Articles of  Incorporation,  the Board of Directors of the  Corporation has duly
adopted the following recitals and resolutions:

         WHEREAS,   the  Second  Restated   Articles  of  Incorporation  of  the
Corporation  provide for a class of shares known as Preferred  Shares,  issuable
from time to time in one or more series; and

         WHEREAS, the Board of Directors of the Corporation is authorized within
the  limitations  and  restrictions  stated in the Second  Restated  Articles of
Incorporation  to determine or alter the rights,  preferences,  privileges,  and
restrictions  granted to or imposed on any wholly  unissued  series of Preferred
Shares,  to fix the  number  of  shares  constituting  any such  series,  and to
determine the designation thereof, or any of them; and

         WHEREAS,  the  Corporation has not issued any shares of Preferred Stock
and the Board of Directors of this Corporation  desires to determine the rights,
preferences,  privileges,  and  restrictions  relating to this initial series of
Preferred  Stock,  and the  number of shares  constituting  said  Series and the
designation of said series;

         NOW, THEREFORE, BE IT

         RESOLVED: That the President and the Secretary of this Corporation are
         each   authorized  to  execute,   verify  and  file  a  certificate  of
         determination  of  preferences  with  respect to the Series A Preferred
         Stock in accordance with the laws of the State of California.

         RESOLVED  FURTHER:  That the Board of Directors  hereby  determines the
         rights,  preferences,  privileges  and  restrictions  relating  to said
         initial Series of Preferred Stock shall be as set forth below:

              "A. Fifty thousand of the authorized  shares of Preferred Stock of
         the Corporation, none of which have been issued or are outstanding, are
         hereby designated "Series A Convertible Preferred Stock" (the "Series A
         Preferred Stock").


<PAGE>

              B. The rights,  preferences,  privileges,  restrictions  and other
         matters relating to the Series A Preferred Stock are as follows:

                     1. Dividend Rights. The holders of Series A Preferred Stock
         shall be entitled  to receive  quarterly  in  arrears,  but only out of
         funds that are legally available therefor,  dividends in cash or common
         stock of the Corporation, at the option of the Corporation, at the rate
         of three  percent  (3%) of the  "Original  Issue Price" of the Series A
         Preferred  Stock per  annum,  accruing  daily on the basis of a 360-day
         year commencing with the issuance of such Series A Preferred  Stock, on
         each outstanding  share of Series A Preferred Stock. The Original Issue
         Price of the Series A Preferred Stock (as adjusted for any combination,
         consolidation, shares distributions or shares dividends with respect to
         such shares) shall be equal to $100.00 per share.

                     2. Voting Rights.  Except as otherwise provided by law, the
         holders of Series A  Preferred  Stock  shall have no voting  rights and
         their consent shall not be required  (except to the extent  required by
         law) for taking any corporate action.

                     3. Liquidation,  Dissolution or Winding Up. In the event of
         any liquidation,  dissolution or winding up of the Corporation,  either
         voluntary or  involuntary,  the holders of the Series A Preferred Stock
         shall  be  entitled  to  receive,   prior  and  in  preference  to  any
         distribution  of the assets or surplus funds of the  Corporation to the
         holders of the Common Stock by reason of their  ownership  thereof,  an
         amount  equal to the  Original  Issue  Price,  plus an amount  equal to
         accrued and unpaid  dividends  on such Series A Preferred  Stock to the
         date  of  such  payment  (the  "Liquidation   Preference").   If,  upon
         occurrence  of such event the assets and funds thus  distributed  among
         the holders of the Series A Preferred  Stock shall be  insufficient  to
         permit the holders of the Series A Preferred Stock the full Liquidation
         Preference, then the entire assets and funds of the Corporation legally
         available for  distribution  shall be distributed  among the holders of
         the Series A Preferred  Stock in  proportion to the number of shares of
         Series A Preferred  Stock held by each such holder.  After  payment has
         been  made to the  holders  of the  Series  A  Preferred  Stock  of the
         Liquidation  Preference,  the  holders  of the  Common  Stock  shall be
         entitled to receive the remaining assets of the Corporation.

                     4.  Consolidation,  Merger,  Exchange,  Etc..  In case  the
         Corporation shall enter into any  consolidation,  merger,  combination,
         statutory share exchange or other transaction in which the Common Stock
         is  exchanged  for or changed into other  shares or  securities,  money
         and/or any other property, then in any such case the Series A Preferred
         Stock  shall  at  the  same  time  be  either,  at  the  option  of the
         Corporation,  (a) similarly  exchanged or changed into preferred shares
         of the surviving  entity  providing the holders of such preferred stock
         with (to the extent  possible) the same relative rights and preferences
         as the Series A  Preferred  Stock or (b)  converted  into the shares of
         stock and other securities,  money and/or any other property receivable
         upon or  deemed  to be held by  holders  of  Common  Stock  immediately
         following such  consolidation,  merger,  combination,  statutory  share
         exchange  or  other  transaction,  and  the  holders  of the  Series  A
         Preferred  Stock  shall be  entitled  upon such event to  receive  such
         amount of securities,  money and/or any other property as the shares of
         the Common Stock of the Corporation  into which such shares of Series A
         Preferred  Stock could have been  converted  immediately  prior to such
         consolidation,  merger, combination,  statutory share exchange or other
         transaction would have been entitled

                                      -2-

<PAGE>


                     5. Conversion.

                           (a) At the  option  of the  holder  of the  Series  A
         Preferred  Stock,  up to  twenty-five  percent  (25%)  of the  Series A
         Preferred  Stock held by such holder may be converted,  on or after 120
         days from the  closing  of the  purchase  thereof,  into fully paid and
         nonassessable  shares  of the  Corporation's  Common  Stock  or, if the
         Conversion Price (as defined below) is below $10.00 and the Corporation
         so chooses,  the Cash  Equivalent  (as defined below) at the Conversion
         Price.  The  number of shares of Common  Stock  each  share of Series A
         Preferred  Stock  shall be  convertible  into  shall be  calculated  by
         dividing the Original Issue Price of the Series A Preferred Stock to be
         converted by the  conversion  price,  which shall be  calculated at ten
         percent (10%) less than (the "Discount") the low reported trading price
         of the Corporation's Common Stock, as reported by Bloomberg, L.P., over
         the five-day  trading period ending on the day prior to conversion (the
         "Conversion Price"); provided, however, that the Conversion Price shall
         not exceed $10.00 in any case.  Thereafter,  an additional  twenty-five
         percent (25%) of the Series A Preferred Stock held by such holder shall
         be  convertible  on or  after  the  first  day of each  calendar  month
         thereafter on a cumulative basis. In the event the Corporation  chooses
         to issue cash in lieu of Common Stock upon  conversion  of the Series A
         Preferred  Stock,  such cash  amount (the "Cash  Equivalent")  shall be
         calculated by multiplying (i) the quotient obtained by dividing (a) the
         dollar amount of the Series A Preferred Stock that the holder of Series
         A  Preferred  Stock has elected to convert by (b) the product of .9 and
         the lowest  intra day trading  price of the Common  Stock on the day of
         conversion;  and (ii) the closing bid price of the Common  Stock on the
         day of conversion. Such cash payment shall be delivered within five (5)
         days of  conversion.  The  holder of  Series A  Preferred  Stock  shall
         indicate  upon  its  notice  of  conversion  its  preferred  method  of
         conversion,  and the  Company  shall  provide  the  holder  of Series A
         Preferred  Stock with notice of its choice of the means of  conversion,
         Common  Stock or the Cash  Equivalent,  within  twenty  four (24) hours
         after  receipt of the notice of  conversion.  Failure by the Company to
         provide such notice will entitle the holder of Series A Preferred Stock
         to its choice of the method of conversion.  Should the Company elect to
         remit the Cash Equivalent  rather than Common Stock,  such cash payment
         shall be delivered within five (5) days of conversion, or the holder of
         Series A Preferred  Stock may elect to revoke his conversion or receive
         a  conversion  in stock.  In the event the  Conversion  Price equals or
         exceeds  $10.00,  the  Corporation  shall effect a  conversion  only in
         stock.

                           (b) Any Series A Preferred  Stock that is outstanding
         on the  second  anniversary  of the  initial  issuance  of the Series A
         Preferred  Stock will be  automatically  converted  into  shares of the
         Corporation's Common Stock as provided above.

                           (c)  Reservation of Stock  Issuable Upon  Conversion.
         The  Corporation  shall at all times reserve and keep  available out of
         its  authorized  but unissued  shares of Common  Stock,  solely for the
         purpose  of  effecting  the  conversion  of the  shares of the Series A
         Preferred  Stock,  such  number of its shares of Common  Stock as shall
         from  time  to time be  sufficient  to  effect  the  conversion  of all
         outstanding  shares of Series A  Preferred  Stock  except to the extent
         such  conversion  is limited by Section 5(d). To the extent that at any
         time there are fewer shares of Common Stock available than are required
         to effect such conversion,  the Common Stock will be allocated on a pro
         rata basis among  holders of Series A Preferred  Stock derived from the
         proportion  of  Series  A  Preferred  Stock  each  holder  of  Series A
         Preferred  Stock holds upon the closing of the  transaction.  If at any
         time the number of authorized but unissued shares of Common Stock shall
         not be  sufficient  to effect the  conversion  of all then  outstanding
         shares of Series A  Preferred  Stock,  the  Corporation  will take such
         corporate action as may, in the opinion of its counsel, be necessary to

                                      -3-

<PAGE>



         increase its  authorized  but  unissued  shares of Common Stock to such
         number of  shares as shall be  sufficient  for such  purpose  except as
         limited by Section 5(d).

                           (d) Notwithstanding  Section 5(a), 5(b) and 5(c), the
         Series A  Preferred  Stock  issued  herewith  shall not be  entitled to
         conversion  into Common Stock that would cause the Corporation to issue
         greater than  2,220,000  shares of Common  Stock.  Any such  conversion
         requests with respect to such Series A Preferred  Stock that would,  in
         the  aggregate  with all  other  Series A  Preferred  Stock  previously
         converted,  cause the  Company to issue more than  2,220,000  shares of
         Common Stock shall be converted by the Corporation  into cash at a rate
         of one hundred and ten percent  (110%) of the  Original  Issue Price of
         such unconverted  Series A Preferred Stock.  Such cash payment shall be
         delivered within five (5) days of conversion.

                           (e) Mechanisms for Effecting Conversions.  The holder
         shall  effect   conversions   by   surrendering   the   certificate  or
         certificates  representing the shares of Series A Preferred Stock to be
         converted  to the  Corporation,  together  with the form of  conversion
         notice  attached  hereto  as  Exhibit  A  (the  "Conversion   Notice"),
         provided,  however,  that the  holder  shall not  convert  more than an
         aggregate of 25% of the shares of Series A Preferred  Stock  originally
         issued to it in any one month  period.  Each  Conversion  Notice  shall
         specify  the  number  of  shares  of  Series  A  Preferred  Stock to be
         converted,  the preferred means of conversion of the holder of Series A
         Preferred  Stock,  and  the  date on  which  such  conversion  is to be
         effected,  which date may not be prior to the date the holder  delivers
         such  Conversion  Notice by facsimile (the  "Conversion  Date").  If no
         Conversion  Date is specified in a Conversion  Notice,  the  Conversion
         Date shall be the date that the Conversion  Notice is deemed  delivered
         pursuant  to  Section  10. If the  holder is  converting  less than all
         shares of Series A Preferred  Stock  represented by the  certificate or
         certificates tendered by the holder with the Conversion Notice, or if a
         conversion  hereunder  cannot be effected  in full for any reason,  the
         Corporation  shall  convert  up to the  number  of  shares  of Series A
         Preferred Stock which can be so converted and shall promptly deliver to
         such  holder a  certificate  for such number of shares as have not been
         converted.

                     6. Fractional  Shares.  In lieu of any fractional shares to
         which the holder of the Series A  Preferred  Stock would  otherwise  be
         entitled,  the  Corporation  shall  pay  cash  equal  to such  fraction
         multiplied  by the  closing  price of one  share  of the  Corporation's
         Common Stock on the trading day prior to  conversion,  if such price is
         available.  If such price is not available,  this Corporation shall pay
         cash for  fractional  shares equal to such  fraction  multiplied by the
         fair  market  value  of one  share  of  Series  A  Preferred  Stock  as
         determined  by the Board of Directors of this  Corporation.  Whether or
         not  fractional  shares  are  issuable  upon such  conversion  shall be
         determined  on the  basis of the  total  number  of  shares of Series A
         Preferred Stock of each holder at the time converting into Common Stock
         and the number of shares of Common Stock  issuable upon such  aggregate
         conversion.

                     7. Minimal Adjustments. No adjustment in the Original Issue
         Price need be made if such  adjustment  would result in a change in the
         Conversion  Price of less than $0.01. Any adjustment of less than $0.01
         which is not made  shall be  carried  forward  and shall be made at the
         time  of and  together  with  any  subsequent  adjustment  which,  on a
         cumulative  basis,  amounts  to an  adjustment  of $0.01 or more in the
         Conversion Price.

                                      -4-

<PAGE>

                     8. Adjustment of Conversion for Dividend and Distributions.

                           (a) In the  event the  Corporation  shall at any time
         after  issuance  of the  Series A  Preferred  Stock  declare or pay any
         dividend or other distribution on Common Stock, payable in Common Stock
         or other securities or rights  convertible  into, or exchangeable  for,
         Common Stock,  or effect a subdivision or combination or  consolidation
         of the outstanding Common Stock (by reclassification or otherwise) into
         a greater or lesser number of Common Stock,  then in each such case the
         number of Common Stock  issuable  upon the  conversion  of the Series A
         Preferred Stock shall be adjusted (the "Adjustment") by multiplying the
         number of Common  Stock to which the holder was  entitled  before  such
         event by a multiplier X/Y determined as follows:

                           X        =       The    number   of   Common    Stock
                                            outstanding  immediately  after such
                                            event.

                           Y        =       The number of Common Stock that were
                                            outstanding   immediately  prior  to
                                            such event.

                           (b) In the  event the  Corporation  shall at any time
         after issuance of the Series A Preferred  Stock,  distribute to holders
         of its Common Stock, other than as part of a dissolution or liquidation
         or the winding up of its affairs,  any shares of its capital stock, any
         evidence  of  indebtedness,  or other  securities  or any of its assets
         (other than Common Stock or securities convertible into or exchangeable
         for Common Stock),  then, in any such case, the Preferred  Stock holder
         shall be entitled to receive, upon conversion of the Series A Preferred
         Stock,  with respect to each share of Common Stock  issuable  upon such
         conversion,  the amount of cash or  evidence of  indebtedness  or other
         securities  or assets which such Series A Preferred  Stock holder would
         have been entitled to receive with respect to each such share of Common
         Stock as a result  of the  happening  of such  event  had the  Series A
         Preferred Stock holder converted to Common Stock  immediately  prior to
         the record date or other date determining the shareholders  entitled to
         participate in such distribution (the "Determination Date") or, in lieu
         thereof,  if the  Board  of  Directors  of the  Corporation  should  so
         determine at the time of such distribution,  a reduced Conversion Price
         determined by  multiplying  the Conversion  Price on the  Determination
         Date by a  fraction,  the  numerator  of  which is the  result  of such
         Conversion Price reduced by the value of such  distribution  applicable
         to one share of Common  Shares  (such  value to be  determined  in good
         faith by the  Corporation's  Board of Directors) and the denominator of
         which is such Conversion Price.

                           (c)  In  the  event  an  Adjustment  is  made  by the
         Corporation,  the  Corporation  shall  notify  each  holder of Series A
         Preferred Stock as soon as is commercially  practicable  and, if deemed
         necessary,   shall  explain  briefly  to  each  holder  the  Adjustment
         procedure and the reason for the Adjustment.

                     9. Vote to Change the Terms of Series A  Preferred  Shares.
         The approval of the Board of Directors  and the  affirmative  vote at a
         meeting duly called by the Board of Directors  for such purpose (or the
         written  consent  without a  meeting)  of the  holders of not less than
         two-thirds (2/3) of the then outstanding Series A Preferred Stock shall
         be  required  to either (i) amend,  alter,  change or repeal any of the
         powers, designations,  preferences and rights of the Series A Preferred
         Stock or (ii) for a period of one year after the date this  certificate
         is filed with the California  Secretary of State,  authorize or issue a
         class of  equity  securities  or  convertible  debt  ranking  senior in
         liquidation  preference,  dividends,  or  distribution of assets to the
         Series A Preferred Stock.

                                      -5-

<PAGE>


                     10. Notices. All notices and other communications  required
         or  permitted  hereunder  shall  be in  writing  and  shall  be  deemed
         effectively  given upon  delivery to the party to be notified in person
         or upon delivery by courier service or upon delivery after deposit with
         the United  States  mail,  by  registered  or certified  mail,  postage
         prepaid,  or upon receipt by the party of a facsimile  copy,  addressed
         (a) if to a holder of Series A Preferred Stock, at such address of such
         holder of Series A  Preferred  Stock set forth in Exhibit A, or at such
         other  address as such  holder of Series A  Preferred  Stock shall have
         furnished  to Sigma  Designs,  Inc. in writing,  or (b) if to any other
         holder  of any  Shares,  at such  address  as such  holder  shall  have
         furnished Sigma Designs,  Inc. in writing, or, until any such holder so
         furnishes an address to Sigma Designs,  Inc. then to and at the address
         of the last  holder of such Shares who has so  furnished  an address to
         Sigma Designs, Inc. or (c) if to Sigma Designs, Inc. one copy should be
         sent to Sigma Designs, Inc., 46501 Landing Parkway, Fremont, California
         94538 and addressed to the attention of the Corporate Secretary,  or at
         such other address as Sigma  Designs,  Inc. shall have furnished to the
         holders of Series A Preferred Stock."

                                      -6-


<PAGE>

                                    Exhibit A

                               SIGMA DESIGNS, INC.
                                CONVERSION NOTICE
                            AT THE ELECTION OF HOLDER

(To be Executed by the Registered Holder
in order to Convert shares of Preferred Stock)

The  undersigned  hereby  irrevocably  elects to convert the number of shares of
Series A Convertible  Preferred  Stock  indicated  below,  into shares of Common
Stock,  no  par  value  (the  "Common  Stock"),  of  Sigma  Designs,  Inc.  (the
"Corporation")  according  to the  conditions  hereof,  or, if  applicable,  its
preference for the Cash Equivalent,  as of the date written below. If shares are
to be issued in the name of a person other than the undersigned, the undersigned
will pay all  transfer  taxes  payable with  respect  thereto and is  delivering
herewith  such  certificates  and  opinions  as  reasonably   requested  by  the
Corporation  in accordance  therewith.  No fee will be charged to the Holder for
any conversion, except for such transfer taxes, if any.

Conversion calculations:

                             ---------------------------------------------------
                             Date to Effect Conversion

                             Holder to indicate one Conversion Preference:
                             |_|     Shares
                             |_|     Cash Equivalent

                             ---------------------------------------------------
                             Number of Shares of Preferred Stock to be Converted

                             ---------------------------------------------------
                             Applicable Conversion Price

                             ---------------------------------------------------
                             Signature

                             ---------------------------------------------------
                             Name:

                             ---------------------------------------------------
                             Address:


The Company undertakes within twenty-four (24) hours of its receipt,  whether by
facsimile  or other  means  provided  for in  Section 10 of the  Certificate  of
Determination,  of this conversion notice (and, in any case prior to the time it
effects the conversion requested hereby), to notify the converting holder of its
choice, where applicable, of the means of conversion.


<PAGE>



                                    Exhibit C

                                 FORM OF WARRANT


THE SECURITIES  EVIDENCED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE
U.S.  SECURITIES ACT OF 1933, AS AMENDED (THE  "SECURITIES  ACT"),  OR ANY OTHER
APPLICABLE  SECURITIES  LAWS AND HAVE BEEN ISSUED IN RELIANCE  UPON AN EXEMPTION
FROM  THE  REGISTRATION  REQUIREMENTS  OF THE  SECURITIES  ACT  AND  SUCH  OTHER
SECURITIES LAWS. NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION  HEREIN
MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED, HYPOTHECATED
OR OTHERWISE DISPOSED OF, EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT
UNDER THE SECURITIES  ACT OR PURSUANT TO A TRANSACTION  WHICH IS EXEMPT FROM, OR
NOT  SUBJECT  TO,  SUCH  REGISTRATION.  THE  HOLDER OF THIS  CERTIFICATE  IS THE
BENEFICIARY OF CERTAIN  OBLIGATIONS OF SIGMA DESIGNS,  INC. (THE  "COMPANY") SET
FORTH IN A PRIVATE  SECURITIES  SUBSCRIPTION  AGREEMENT  BETWEEN THE COMPANY AND
[BUYER] DATED [DATE]. A COPY OF THE AFORESAID  SUBSCRIPTION AGREEMENT EVIDENCING
SUCH OBLIGATIONS MAY BE OBTAINED FROM THE COMPANY'S EXECUTIVE OFFICES.


                                     [Date]

                    Warrant to Purchase up to ________ Shares
                     of Common Stock of Sigma Designs, Inc.

         Sigma Designs, Inc., a California  corporation (the "Company"),  hereby
acknowledges  that  ___________  ___________  (the "Buyer") or any other Warrant
Holder (hereinafter  defined) is entitled, on the terms and conditions set forth
below,  to  purchase  from the  Company  beginning  the day  after the six month
anniversary  date of the closing of the purchase of this warrant (the "Warrant")
and ending  three  years  after the six month  anniversary  date of the  closing
forty-two  ((42)  months  after the  original  issuance  of this  Warrant) up to
__________ fully paid and nonassessable shares of common stock, no par value, of
the  Company  (the  "Common  Stock"),  as the same may be  adjusted  pursuant to
Section 5 herein, at the Purchase Price (hereinafter  defined),  as the same may
be  adjusted  pursuant  to Section 5 herein.  The resale of the shares of Common
Stock or other securities  issuable upon exercise or exchange of this Warrant is
subject to the provisions of the  Registration  Rights  Agreement by and between
the Company and the  Investor  dated as of June _____,  1997 (the  "Registration
Rights Agreement").

16.      Definitions.

         a.  The term  "Warrant  Holder" shall mean the Buyer or any assignee of
             all or any portion of this Warrant.

         b.  The term "Warrant  Shares" shall mean the shares of Common Stock or
             other  securities  issuable upon  exercise of this Warrant.

         c.  The term  "Purchase  Price" shall be an amount equal to 130% of the
             Market  Price for the Common  Stock on the  earlier of (i) the date
             the  registration  statement,  registering the Warrant  Shares,  is
             declared  effective by the Securities and Exchange  Commission,  or
             (ii) if a registration  statement has not been declared  effective,
             the 120th day after the  Closing  as may be  adjusted  pursuant  to
             Section 5 herein.


<PAGE>



         d.  The term "Agreement" shall mean the Private Securities Subscription
             Agreement,  dated as of June __, 1997,  between the Company and the
             Buyer.

         e.  Other  capitalized  terms  used  herein  which are  defined  in the
             Agreement shall have the same meanings herein as therein.

17.      Exercise or Exchange of Warrant.

         a.   This Warrant may be exercised by the Warrant  Holder,  in whole or
              in part,  at any time during the life of this Warrant as described
              herein,  and  from  time  to time by  surrender  of this  Warrant,
              together  with the form of  subscription  at the end  hereof  duly
              executed by Warrant Holder,  together with the full Purchase Price
              (as  defined in  Section  1) for each share of Common  Stock as to
              which this  Warrant is  exercised to the Company at the address of
              the Company set forth in Section 13 hereof.  In the event that the
              Warrant is not  exercised  in full,  the number of Warrant  Shares
              shall be reduced by the  number of such  Warrant  Shares for which
              this Warrant is exercised,  and the Company, at its expense, shall
              forthwith  issue and  deliver to or upon the order of the  Warrant
              Holder a new  Warrant  of like  tenor  in the name of the  Warrant
              Holder or as the  Warrant  Holder  may  request,  reflecting  such
              adjusted  Warrant Shares.  Warrants may be exchanged for shares of
              Common Stock,  the value of the Warrants so exchanged  shall equal
              the Closing  Price (as  hereinafter  defined)  minus the  Purchase
              Price for each share  subject to the  Warrant  so  exchanged.  The
              "Closing  Price"  shall  mean (i) the  closing  bid  price of such
              Common Stock as quoted on the Principal Market (as herein defined)
              on the Date of Exercise  (as defined  below) or (ii) if the Common
              Stock  is not  listed  or  admitted  to  trading  on any  national
              securities  exchange  or quoted on the Nasdaq  National  Market or
              Small-Cap  Market,  the closing bid price on the  over-the-counter
              market as  furnished  by any New York Stock  Exchange  member firm
              which makes a market in the Common Stock reasonably  selected from
              time to time by the  Company  for  that  purpose,  or (iii) if the
              Common  Stock is not listed or admitted to trading on any national
              securities  exchange  or quoted on the Nasdaq  National  Market or
              Small-Cap Market or traded  over-the-counter and the average price
              cannot be determined as contemplated  above, the fair market value
              of the Common Stock as reasonably  determined in good faith by the
              Company's Board of Directors.

         b.   The "Date of Exercise"  of the Warrant  shall be the date that the
              advance copy of the form of exercise  attached hereto as Exhibit A
              (the  "Exercise  Form"),  is sent  by  facsimile  to the  Company,
              provided that the original  Warrant and Exercise Form are received
              by the Company within  reasonable time thereafter.  If the Warrant
              Holder  has not sent  advance  notice  by  facsimile,  the Date of
              Exercise shall be the date the original  Exercise Form is received
              by the Company.

18.      Delivery of Stock Certificates.

         a.   Subject to the terms and  conditions of this  Warrant,  as soon as
              practicable after the exercise of this Warrant in full or in part,
              and in any event within five (5)  business  days  thereafter,  the
              Company at its expense (including, without limitation, the payment
              by it of any  applicable  issue  taxes) will cause to be issued in
              the name of and delivered to the Warrant Holder, or as the Warrant
              Holder may lawfully  direct, a certificate or certificates for the
              number of fully paid and non-assessable  shares of Common Stock to
              which the  Warrant  Holder  shall be  entitled  on such  exercise,
              together  with any other  stock or other  securities  or  property
              (including cash, where  applicable) to which the Warrant Holder is
              entitled  upon such  exercise in  accordance  with the  provisions
              hereof.

         b.   This  Warrant  may not be  exercised  as to  fractional  shares of
              Common Stock.  In the event that the exercise of this Warrant,  in
              full or in part,  would result in the  issuance of any  fractional
              share of


                                       -2-

<PAGE>


              Common  Stock,  then in such  event the  Warrant  Holder  shall be
              entitled to cash equal to the fair market value of such fractional
              share.  For purposes of this  Warrant,  "fair market  value" shall
              equal the  closing  bid price of the  Common  Stock on the  Nasdaq
              National Market or Small-Cap  Market,  the American Stock Exchange
              or the New York Stock Exchange, whichever is the principal trading
              exchange or market for the Common Stock (the  "Principal  Market")
              on the date of determination or, if the Common Stock is not listed
              or  admitted  to trading on any  national  securities  exchange or
              quoted on the Nasdaq  National  Market or  Small-Cap  Market,  the
              closing bid price on the over-the-  counter market as furnished by
              any New York Stock  Exchange  member  firm which makes a market in
              the  Common  Stock  reasonably  selected  from time to time by the
              Company for that purpose, or, if the Common Stock is not listed or
              admitted to trading on any national  securities exchange or quoted
              on the  Nasdaq  National  Market  or  Small-Cap  Market  or traded
              over-the-counter  and the average  price cannot be  determined  as
              contemplated  above,  the fair  market  value of the Common  Stock
              shall be as  reasonably  determined in good faith by the Company's
              Board of Directors.

19.      Covenants of the Company.

         a.   The Company shall use its reasonable best efforts to insure that a
              registration  statement  under the  Securities  Act  covering  the
              resale or other  disposition  thereof of the Warrant Shares by the
              Warrant  Holder  is  effective  to  the  extent  provided  by  the
              Registration Rights Agreement.

         b.   All Warrant  Shares  that may be issued  upon the  exercise of the
              rights represented by this Warrant will, upon issuance, be validly
              issued,  fully  paid and  nonassessable  and free from all  taxes,
              liens, and charges with respect to the issue thereof.

         c.   The Company shall take all necessary action and proceedings as may
              be required and permitted by applicable  law, rule and regulation,
              including,  without  limitation  the  notification  of the  Nasdaq
              National Market,  for the legal and valid issuance of this Warrant
              and the Warrant Shares to the Warrant Holder.

         d.   From the date hereof  through the last date on which this  Warrant
              is  exercisable,  the  Company  shall  take all  steps  reasonably
              necessary  and within its control to insure that the Common  Stock
              remains listed or quoted on the Principal Market.

         e.   The Company shall at all times reserve and keep available,  solely
              for issuance and delivery as Warrant Shares hereunder, such shares
              of Common  Stock as shall from time to time be issuable as Warrant
              Shares.

         f.   The  Warrant  Shares,  when  issued in  accordance  with the terms
              hereof,  will be duly  authorized  and, when paid for or issued in
              accordance with the terms hereof,  shall be validly issued,  fully
              paid and  non-assessable.  The Company has authorized and reserved
              for issuance to the Warrant Holder the requisite  number of shares
              of Common Stock to be issued pursuant to this Warrant.

         g.   With a view to making available to the Warrant Holder the benefits
              of  any  rule  or  regulation  of  the   Securities  and  Exchange
              Commission  (the  "SEC"),  that may at any time permit the Warrant
              Holder to sell  securities  of the  Company to the public  without
              registration,  including without  limitation Rule 144, the Company
              agrees to use its  reasonable  best  efforts  to (i) make and keep
              public  information  available,  as those terms are understood and
              defined in such rule or  regulation,  at all times;  and (ii) file
              with the SEC in a timely  manner all reports  and other  documents
              required of the Company under the  Securities Act and the Exchange
              Act.

                                       -3-

<PAGE>


         h.   This  Warrant will be binding  upon any entity  succeeding  to the
              Company  by  merger,   consolidation  or  acquisition  of  all  or
              substantially all of the Company's assets.

20.      Adjustment  of Purchase  Price and Number of Shares.  The number of and
         kind of  securities  purchasable  upon exercise of this Warrant and the
         Purchase  Price  shall be  subject to  adjustment  from time to time as
         follows:

         a.   Subdivisions,  Combinations  and Other  Issuances.  If the Company
              shall  at  any  time  after  the  date  hereof  but  prior  to the
              expiration of this Warrant subdivide its outstanding securities as
              to which purchase rights under this Warrant exist, by split-up, or
              otherwise,  or  combine  its  outstanding  securities  as to which
              purchase  rights under this Warrant  exist,  the number of Warrant
              Shares as to which this Warrant is  exercisable  as of the date of
              such  subdivision,  split-up,  or combination  shall  forthwith be
              proportionately  increased  in  the  case  of  a  subdivision,  or
              proportionately   decreased   in  the   case  of  a   combination.
              Appropriate  adjustments shall also be made to the Purchase Price,
              so that  after  such  adjustments  the  aggregate  Purchase  Price
              payable  hereunder  for the  increased  number of shares of Common
              Stock shall be the same as the aggregate  Purchase Price in effect
              immediately prior to such adjustments.

         b.   Stock  Dividend.  If at any time after the date hereof the Company
              declares a dividend or other  distribution on Common Stock payable
              in Common Stock or other securities or rights  convertible into or
              exchangeable  for  Common  Stock  ("Common  Stock   Equivalents"),
              without  payment of any  consideration  by holders of Common Stock
              for the  additional  shares of Common  Stock or the  Common  Stock
              Equivalents  (including  the  additional  shares of  Common  Stock
              issuable upon exercise or conversion thereof),  then the number of
              shares of Common  Stock for which this  Warrant  may be  exercised
              shall  be  increased  as of the  record  date (or the date of such
              dividend  distribution  if no record date is set) for  determining
              which  holders of Common  Stock shall be entitled to receive  such
              dividends,  in  proportion  to  the  increase  in  the  number  of
              outstanding  shares  (and  shares of Common  Stock  issuable  upon
              conversion of all such Common Stock  Equivalents)  of Common Stock
              as a result of such  dividend,  and the  Purchase  Price  shall be
              adjusted so that the aggregate  amount payable for the purchase of
              all the Warrant Shares issuable  hereunder  immediately  after the
              record date (or on the date of such  distribution,  if applicable)
              for such  dividend  shall  equal the  aggregate  amount so payable
              before the record  date (or before the date of such  distribution,
              if applicable).

         c.   Other  Distributions.  If at any time  after the date  hereof  the
              Company  distributes to holders of its Common Stock, other than as
              part of a  dissolution  or  liquidation  or the  winding up of its
              affairs,  any  shares  of  its  capital  stock,  any  evidence  of
              indebtedness  or any of its assets (other than cash,  Common Stock
              or Common Stock Equivalents),  then, in any such case, the Warrant
              Holder  shall  be  entitled  to  receive,  upon  exercise  of this
              Warrant,  with respect to each share of Common Stock issuable upon
              such  exercise,  (i) the amount of  evidences of  indebtedness  or
              other  securities or assets  (excluding cash and the Company's own
              Common  Stock or Common  Stock  Equivalents)  which  such  Warrant
              Holder  would  have been  entitled  to  receive as a result of the
              happening  of such event with respect to each such share of Common
              Stock  subject to this  Warrant had this  Warrant  been  exercised
              immediately prior to the record date or other date determining the
              shareholders  entitled to  participate in such  distribution  (the
              "Determination  Date")  or (ii) in lieu  thereof,  if the Board of
              Directors  of the Company  should so determine at the time of such
              distribution,  a lower Purchase Price reduced by the value of such
              distribution  applicable  to one share of Common Stock (such value
              to  be  determined  in  good  faith  by  the  Company's  Board  of
              Directors)

         d.   Merger,  Consolidation,  etc. If at any time after the date hereof
              there shall be a merger or  consolidation  of the Company  with or
              into, or a transfer of all or  substantially  all of the assets of
              the Company to, another entity (a "Consolidation Event"), then the
              Warrant Holder shall be entitled to

                                       -4-

<PAGE>


              receive  upon  such  transfer,  merger or  consolidation  becoming
              effective,  and upon payment of the aggregate  Purchase Price then
              in effect, the number of shares or other securities or property of
              or  cash  or  other  consideration  from  the  Company  or of  the
              successor corporation resulting from such merger or consolidation,
              to which such Warrant  Holder would have been  entitled to receive
              as a result of the  happening  of such event with  respect to each
              such  share of  Common  Stock  subject  to this  Warrant  had this
              Warrant been exercised immediately prior to such transfer,  merger
              or consolidation  becoming  effective or to the applicable  record
              date thereof, as the case may be. The Company shall not effect any
              Consolidation  Event unless the  resulting  successor or acquiring
              entity (if not the  Company)  assumes by  written  instrument  the
              obligation  to deliver to the Warrant  Holder such shares of stock
              and/or securities as the Warrant Holder is entitled to receive had
              this Warrant  been  exercised in  accordance  with the  foregoing;
              provided,  however,  that if as of the third business day prior to
              the consummation of the Consolidation  Event the closing bid price
              of the  Common  Stock  shall  be  equal  to at  least  200% of the
              Purchase Price, then the Warrant shall be automatically  exchanged
              on the  date  of  consummation  of  the  Consolidation  Event,  as
              provided in Section 2 hereof.

         e.   Reclassification,  Etc. If at any time after the date hereof there
              shall be a reclassification of any securities as to which purchase
              rights  under this  Warrant  exist,  into the same or a  different
              number of  securities  of any  other  class or  classes,  then the
              Warrant  Holder  shall  thereafter  be  entitled  to receive  upon
              exercise of this Warrant,  during the period  specified herein and
              upon payment of the Purchase  Price then in effect,  the number of
              shares  or  other   securities   or  property  or  cash  or  other
              consideration    resulting    from    such    reorganization    or
              reclassification,  which  would have been  received by the Warrant
              Holder for the shares of stock  subject to this  Warrant  had this
              Warrant at such time been exercised.

         f.   Purchase Price Adjustment. In the event that the Company issues or
              sells any Common Stock or securities which are convertible into or
              exchangeable  for its Common Stock or any convertible  securities,
              or any warrants or other rights to subscribe for or to purchase or
              any  options  for the  purchase  of its  Common  Stock or any such
              convertible  securities (other than issuance of Preferred Stock or
              of shares of  Common  Stock  upon  conversion  thereof,  shares or
              options  issued or which may be issued to employees,  directors or
              consultants  pursuant  to the  Company's  stock  option  or  stock
              purchase  plans listed in the Public  Documents  or shares  issued
              upon exercise of options,  warrants or rights  outstanding  on the
              date of the  Agreement  and listed in the Public  Documents) at an
              effective purchase price per share which is less than the Purchase
              Price  then in  effect  and less  than the fair  market  value (as
              hereinabove  defined) of the Common  Stock on the trading day next
              preceding such issue or sale, then in each such case, the Purchase
              Price in effect  immediately  prior to such issue or sale shall be
              reduced  effective  concurrently  with  such  issue  or sale to an
              amount determined by multiplying the Purchase Price then in effect
              by a fraction,  (x) the numerator of which shall be the sum of (1)
              the number of shares of Common Stock outstanding immediately prior
              to such  issue  or sale,  including,  without  duplication,  those
              deemed to have been issued under any  provision  of the  Preferred
              Stock  and the  Warrants  plus (2) the  number of shares of Common
              Stock which the  aggregate  consideration  received by the Company
              for such  additional  shares  would  purchase  at such fair market
              value then in effect and (y) the denominator of which shall be the
              number  of  shares  of  Common  Stock of the  Company  outstanding
              immediately   after   such  issue  or  sale   including,   without
              duplication,  those deemed to have been issued under any provision
              of the Preferred  Stock and  Warrants;  provided,  however,  there
              shall be no reduction of the Purchase  Price for such issuances or
              sales at any time from ___________,  1997 through the term of this
              Warrant in an aggregate (i.e.,  not per transaction)  amount of up
              to $7,000,000  provided that such issuance or sale is completed at
              an effective  purchase price per share of at least 85% of the fair
              market value of the Common Stock on the trading day next preceding
              such issue or sale. For purposes of the foregoing fraction, Common
              Stock outstanding shall include,  without  limitation,  any equity
              offerings

                                       -5-

<PAGE>


              then   outstanding,   whether  or  not  they  are  exercisable  or
              convertible when such fraction is to be determined.

         The  number  of  shares  which  may be  purchased  hereunder  shall  be
increased  proportionately  to any reduction in Purchase  Price pursuant to this
paragraph  5(f), so that after such  adjustments  the aggregate  Purchase  Price
payable  hereunder for the  increased  number of shares of Common Stock shall be
the same as the aggregate  Purchase  Price in effect  immediately  prior to such
adjustments.

         Notwithstanding   anything  else  contained  in  this  Warrant  to  the
contrary,  there shall be no adjustment  of the Purchase  Price or the number of
shares of Common Stock issuable  pursuant to the exercise of this Warrant in the
event that during the term of this Warrant,  the Company issues shares of Common
Stock, or securities convertible into Common Stock to the Buyer.

         g.   Adjustments: Additional Shares, Securities or Assets. In the event
              that at any time,  as a result of an  adjustment  made pursuant to
              this Section 5, the Warrant  Holder  shall,  upon exercise of this
              Warrant, become entitled to receive shares and/or other securities
              or assets  (other than Common Stock) then,  wherever  appropriate,
              all references herein to shares of Common Stock shall be deemed to
              refer to and  include  such  shares  and/or  other  securities  or
              assets;  and  thereafter  the number of such shares  and/or  other
              securities or assets shall be subject to  adjustment  from time to
              time  in  a  manner  and  upon  terms  as  nearly   equivalent  as
              practicable to the provisions of this Section 5.

21.      No  Impairment.  The Company  will not, by amendment of its Articles of
         Incorporation  or  through  any  reorganization,  transfer  of  assets,
         consolidation,  merger, dissolution, issue or sale of securities or any
         other  voluntary  action,  avoid or seek to  avoid  the  observance  or
         performance of any of the terms of this Warrant,  but will at all times
         in good faith  assist in the  carrying out of all such terms and in the
         taking of all such action as may be necessary or  appropriate  in order
         to protect the rights of the Warrant Holder against impairment. Without
         limiting  the  generality  of the  foregoing,  the Company (a) will not
         increase the par value of any Warrant  Shares above the amount  payable
         therefor on such exercise,  and (b) will take all such action as may be
         reasonably  necessary  or  appropriate  in order that the  Company  may
         validly and legally issue fully paid and  nonassessable  Warrant Shares
         on the exercise of this Warrant.

22.      Notice of Adjustments;  Notices.  Whenever the Purchase Price or number
         of Warrant Shares  purchasable  hereunder shall be adjusted pursuant to
         Section 5 hereof, the Company shall promptly execute and deliver to the
         Warrant Holder a certificate  setting forth, in reasonable  detail, the
         event  requiring  the  adjustment,  the amount of the  adjustment,  the
         method by which such  adjustment  was calculated and the Purchase Price
         and number of shares purchasable  hereunder after giving effect to such
         adjustment, and shall cause a copy of such certificate to be mailed (by
         first class mail, postage prepaid) to the Warrant Holder.

23.      Rights As Stockholder.  Prior to exercise of this Warrant,  the Warrant
         Holder  shall not be  entitled  to any rights as a  stockholder  of the
         Company  with  respect  to  the  Warrant  Shares,   including  (without
         limitation) the right to vote such shares,  receive  dividends or other
         distributions thereon or be notified of stockholder meetings.  However,
         in the event of any taking by the Company of a record of the holders of
         any class of  securities  for the  purpose of  determining  the holders
         thereof who are  entitled to receive  any  dividend  (other than a cash
         dividend) or other  distribution,  any right to subscribe for, purchase
         or  otherwise  acquire  any  shares  of stock of any class or any other
         securities  or  property,  or to receive any other  right,  the Company
         shall mail to each Warrant  Holder,  at least 10 days prior to the date
         specified  therein,  a notice  specifying  the  date on which  any such
         record is to be taken for the purpose of such dividend, distribution or
         right,  and the amount and character of such dividend,  distribution or
         right.

                                       -6-

<PAGE>



24.      Replacement   of  Warrant.   Upon   receipt  of   evidence   reasonably
         satisfactory  to  the  Company  of  the  loss,  theft,  destruction  or
         mutilation  of the Warrant and, in the case of any such loss,  theft or
         destruction of the Warrant,  upon delivery of an indemnity agreement or
         security reasonably  satisfactory in form and amount to the Company or,
         in the case of any such  mutilation,  on surrender and  cancellation of
         such Warrant,  the Company at its expense will execute and deliver,  in
         lieu thereof, a new Warrant of like tenor.

25.      Consent to Jurisdiction. Each of the Company and the Warrant Holder (i)
         hereby  irrevocably  submits to personal  jurisdiction  in any state or
         federal court  located in the State of  California  for the purposes of
         any suit,  action or  proceeding  arising  out of or  relating  to this
         Warrant.

26.      Entire  Agreement;  Amendments.  This Warrant and the Agreement contain
         the entire  understanding  of the parties  with  respect to the matters
         covered herein and therein.  No provision of this Warrant may be waived
         or  amended  other  than by a  written  instrument  signed by the party
         against whom enforcement of any such amendment or waiver is sought.

27.      Restricted Securities.

         a.   Registration or Exemption  Required.  This Warrant has been issued
              in a transaction exempt from the registration  requirements of the
              Act in reliance upon the provisions of Section 4(2) promulgated by
              the SEC under the  Securities  Act.  This  Warrant and the Warrant
              Shares  issuable  upon  exercise of this Warrant may not be resold
              except  pursuant  to an  effective  registration  statement  or an
              exemption to the  registration  requirements of the Securities Act
              and applicable state laws.

         b.   Legend.  The Warrant and any Warrant  Shares  issued upon exercise
              thereof  (until  a   registration   statement  has  been  declared
              effective by the SEC with respect to the Warrant Shares,  at which
              time,  such legend shall be removed,  and the Warrant Shares shall
              be freely tradeable), shall bear the following legend:

              "THE  SECURITIES  EVIDENCED  BY THIS  CERTIFICATE  HAVE  NOT  BEEN
              REGISTERED UNDER THE U.S.  SECURITIES ACT OF 1933, AS AMENDED (THE
              "SECURITIES  ACT"),  OR ANY OTHER  APPLICABLE  SECURITIES LAWS AND
              HAVE  BEEN  ISSUED  IN  RELIANCE   UPON  AN  EXEMPTION   FROM  THE
              REGISTRATION  REQUIREMENTS  OF THE  SECURITIES  ACT AND SUCH OTHER
              SECURITIES  LAWS.  NEITHER  THIS  SECURITY  NOR  ANY  INTEREST  OR
              PARTICIPATION   HEREIN   MAY   BE   REOFFERED,   SOLD,   ASSIGNED,
              TRANSFERRED,  PLEDGED,  ENCUMBERED,  HYPO  THECATED  OR  OTHERWISE
              DISPOSED  OF,  EXCEPT   PURSUANT  TO  AN  EFFECTIVE   REGISTRATION
              STATEMENT  UNDER THE  SECURITIES  ACT OR PURSUANT TO A TRANSACTION
              WHICH IS EXEMPT FROM,  OR NOT SUBJECT TO, SUCH  REGISTRATION.  THE
              HOLDER  OF  THIS   CERTIFICATE  IS  THE   BENEFICIARY  OF  CERTAIN
              OBLIGATIONS  OF  SIGMA  DESIGNS,  INC.  SET  FORTH  IN  A  PRIVATE
              SECURITIES  SUBSCRIPTION AGREEMENT BETWEEN THE COMPANY AND [BUYER]
              DATED  [DATE].  A COPY  OF THE  AFORESAID  SUBSCRIPTION  AGREEMENT
              EVIDENCING  SUCH  OBLIGATIONS  MAY BE OBTAINED  FROM THE COMPANY'S
              EXECUTIVE OFFICES."

The certificates  representing  the Warrants,  the shares of Preferred Stock and
underlying Common Stock shall also bear any other legends required by applicable
Federal or state  securities  laws,  which  legends  shall be  removed  when not
required in accordance with this Paragraph 2(iii).

                                       -7-

<PAGE>



         c.   Assignment.   Assuming  the  conditions  of  (a)  above  regarding
              registration or exemption have been satisfied,  the Warrant Holder
              may sell,  transfer,  assign,  pledge or otherwise dispose of this
              Warrant,  in whole or in part.  The Warrant Holder shall deliver a
              written  notice to the Company,  substantially  in the form of the
              Assignment  attached hereto as Exhibit B, indicating the person or
              persons to whom the Warrant  shall be assigned and the  respective
              number of warrants to be  assigned to each  assignee.  The Company
              shall  effect  the  assignment  within  ten (10)  days,  and shall
              deliver to the  assignee(s)  designated  by the  Warrant  Holder a
              Warrant or  Warrants  of like tenor and terms for the  appropriate
              number of shares.

28.      Notices. Any notice or other communication  required or permitted to be
         given  hereunder  shall be in writing and shall be  effective  (a) upon
         hand  delivery  or  delivery  by  facsimile  at the  address  or number
         designated below (if delivered on a business day during normal business
         hours where such notice is to be received),  or the first  business day
         following  such  delivery  (if  delivered  other than on a business day
         during  normal  business  hours where such notice is to be received) or
         (b) on the second business day following the date of mailing by express
         courier  service,  fully  prepaid,  addressed to such address,  or upon
         actual  receipt of such  mailing,  whichever  shall  first  occur.  The
         addresses for such communications shall be:

                  to the Company:                    Sigma Designs, Inc.
                                                     46501 Landing Parkway
                                                     Fremont, California  94538
                                                     Attn:  Ms. Carol Kaplan
                                                     Fax:  (510) 770-2640

                  to the Warrant Holder:

                                                     Attn:
                                                     Fax:

                  with a copy to:

                                                     Attn:
                                                     Fax:

         Either  party  hereto  may from  time to time  change  its  address  or
facsimile  number for notices  under this  Section 13 by giving at least 10 days
prior written  notice of such changed  address or facsimile  number to the other
party hereto.

29.      Miscellaneous. This Warrant and any term hereof may be changed, waived,
         discharged or terminated only by an instrument in writing signed by the
         party against which  enforcement of such change,  waiver,  discharge or
         termination is sought.  This Warrant shall be construed and enforced in
         accordance  with and  governed by the laws of the State of  California.
         The headings in this Warrant are for  purposes of reference  only,  and
         shall not  limit or  otherwise  affect  any of the  terms  hereof.  The
         invalidity or  unenforceability of any provision hereof shall in no way
         affect the validity or enforceability of any other provision.

                                       -8-


<PAGE>

SIGMA DESIGNS, INC.


By: _________________________________
       Thinh Q. Tran
       Chairman of the Board and
           Chief Executive Officer


[CORPORATE SEAL]



Attest:

By: _________________________________
       Kit Tsui
       Secretary


                                       -9-


<PAGE>

                                    EXHIBIT A
                                  EXERCISE FORM
                               SIGMA DESIGNS, INC.


         The  undersigned  hereby  irrevocably  exercises  the right to purchase
__________________  shares of Common Stock of SIGMA DESIGNS,  INC., a California
corporation,  evidenced by the attached  Warrant,  and herewith makes payment of
the  Purchase  Price with respect to such shares in full in the form of [cash or
check in the amount of $___],  [______ Warrant Shares which represent the amount
of  Warrant  Shares as  provided  in the  attached  Warrant  to be  canceled  in
connection  with such  exercise],  all in  accordance  with the  conditions  and
provisions of said Warrant.

         The  undersigned  requests  that stock  certificates  for such  Warrant
Shares be issued, and a Warrant  representing any unexercised  portion hereof be
issued,  pursuant  to this  Warrant  in the name of the  registered  Holder  and
delivered to the undersigned at the address set forth below.


Dated:___________________________________


_________________________________________
Signature of Registered Holder


_________________________________________
Name of Registered Holder (Print)


_________________________________________
Address

<PAGE>



                                    EXHIBIT B
                                   ASSIGNMENT
                (To be executed by the registered Warrant Holder
                        desiring to transfer the Warrant)


         FOR VALUED  RECEIVED,  the  undersigned  Warrant Holder of the attached
Warrant  hereby sells,  assigns and  transfers  unto the persons below named the
right to purchase  ______________  shares of the Common Stock of SIGMA  DESIGNS,
INC.  evidenced by the attached Warrant and does hereby  irrevocably  constitute
and appoint ______________________  attorney to transfer the said Warrant on the
books of the Company, with full power of substitution in the premises.

Dated:______________________________________


____________________________________________
Signature

Fill in for new Registration of Warrant:


____________________________________________
Name


____________________________________________
Address


____________________________________________
Please print name and address of assignee
(including zip code number)


                                     NOTICE

         The  signature  to the  foregoing  Exercise  Form  or  Assignment  must
correspond to the name as written upon the face of the attached Warrant in every
particular, without alteration or enlargement or any change whatsoever.



<PAGE>

                                    Exhibit D

            Form of Opinion of Wilson Sonsini Goodrich & Rosati, P.C.


                                  June __, 1997




To the Purchasers Listed in Exhibit A
to the Sigma Designs, Inc.
Series A Preferred Stock Subscription
Agreement Dated as of June __, 1997

Ladies and Gentlemen:

         Reference  is made  to that  certain  Private  Securities  Subscription
Agreement, dated as of June __, 1997 (the "Subscription Agreement") by and among
Sigma  Designs,  Inc.,  a  California  corporation  (the  "Company"),   and  the
purchasers listed in Exhibit A to the Subscription  Agreement (the "Investors"),
which  provides  for the  issuance  by the  Company  to the  Investors  of up to
__________ shares of Series A Preferred Stock of the Company,  without par value
(the  "Series A Preferred  Stock").  This opinion is rendered to you pursuant to
Section 6(ii) of the Subscription Agreement,  and all terms used herein have the
meanings defined for them in the Subscription Agreement unless otherwise defined
herein.

         We have  acted  as  counsel  for the  Company  in  connection  with the
negotiation  of the  Subscription  Agreement  and the  issuance  of the Series A
Preferred  Stock.  As  such  counsel,  we  have  made  such  legal  and  factual
examinations  and  inquiries as we have deemed  advisable  or necessary  for the
purpose of rendering this opinion.  In addition,  we have examined  originals or
copies of  documents,  corporate  records and other  writings  which we consider
relevant for the purposes of this opinion.  In such  examination we have assumed
the  genuineness  of all  signatures on original  documents,  the  conformity to
original  documents  of all copies  submitted  to us and the due  execution  and
delivery of all documents where due execution and delivery are a prerequisite to
the effectiveness thereof.

         As used in this opinion,  the expression "to our knowledge,"  "known to
us" or similar  language with reference to matters of fact means that,  after an
examination  of  documents  made  available  to us by  the  Company,  and  after
inquiries  of officers  of the  Company,  but  without  any further  independent
factual investigation,  we find no reason to believe that the opinions expressed
herein are factually  incorrect.  Further,  the expression  "to our  knowledge",
"known to us" or similar  language  with  reference to matters of fact refers to
the current  actual  knowledge of the  attorneys of this firm who have worked on
matters for the Company solely in connection with the Subscription Agreement and
the transactions  contemplated thereby. Except to the extent expressly set forth
herein or as we otherwise  believe to be  necessary to our opinion,  we have not
undertaken any independent  investigation  to determine the existence or absence
of any fact, and no inference as to our knowledge of the existence or absence of
any fact should be drawn from our representation of the Company or the rendering
of the opinion set forth below.

         For  purposes  of this  opinion,  we are  assuming  that  you  have all
requisite power and authority, and have taken any and all necessary corporate or
partnership  action, to execute and deliver the Subscription  Agreement,  and we
are assuming that the  representations  and warranties  made by the Investors in
the  Subscription  Agreement and pursuant  thereto are true and correct.  We are
also assuming that the Investors have purchased the Series A Preferred Stock for
value, in good faith and without notice of any adverse claims within the meaning
of the California Uniform Commercial Code.

<PAGE>

June __, 1997
Page 2



         The  opinions  hereinafter  expressed  are  subject  to  the  following
qualifications:

         (a) We express no opinion as to the effect of applicable bankruptcy and
other similar laws affecting the rights of creditors generally;

         (b) We express  no  opinion as to the effect of rules of law  governing
specific performance,  liquidated damages,  injunctive relief or other equitable
remedies;

         (c) We express no opinion as to compliance with  applicable  anti-fraud
provisions of federal or state securities laws;

         (d) We  express  no  opinion  as to the  enforceability  of the  voting
provisions of Section 5(vii) of the Subscription Agreement; and

         (e) We are members of the Bar of the State of California and we are not
expressing any opinion as to any matter relating to the laws of any jurisdiction
other than the laws of the United States of America and the laws of the State of
California.

         Based upon and subject to the foregoing, we are of the opinion that:

         1. The Series A Preferred Stock issued under the Subscription Agreement
are validly issued,  fully-paid and nonassessable,  free and clear of any liens,
encumbrances, and preemptive rights or similar rights contained in the Company's
Second Restated Articles of Incorporation or Bylaws;

         2. The  Subscription  Agreement has been duly  authorized,  and validly
executed  and  delivered  by the  Company  and  constitutes  a valid and binding
agreement in accordance with its terms;

         3. The  execution  and delivery of the  Subscription  Agreement and the
consummation  of the issuance of the Series A Preferred Stock do not violate any
provision  of the Second  Restated  Articles of  Incorporation  or Bylaws of the
Company, or, to our knowledge,  any material indenture,  mortgage, deed of trust
or other material  agreement or instrument listed as an Exhibit in the Company's
most  recent  Form 10-K filed  under the  Securities  Exchange  Act of 1934,  as
amended, or, to our knowledge, any existing applicable decree, judgment or order
of any court, federal or state regulatory body,  administrative  agency or other
governmental body having  jurisdiction over the Company or any of its properties
or assets;

         4. No authorization, approval or consent of or filing with any federal,
state or local  governmental  body of the United States is legally  required for
the issuance  and sale of the Series A Preferred  Stock as  contemplated  by the
Subscription Agreement.

                                       -2-

<PAGE>

June __, 1997
Page 3


         This opinion is furnished to the Investors  solely for their benefit in
connection  with the  purchase of the Shares,  and may not be relied upon by any
other person without our prior written consent.

                                         Very truly yours,

                                         WILSON SONSINI GOODRICH & ROSATI
                                         Professional Corporation


                                       -3-




                                                                     Exhibit 4.2

                          REGISTRATION RIGHTS AGREEMENT


         This REGISTRATION RIGHTS AGREEMENT (this "Agreement"), dated as of June
25, 1997 is made and entered  into  between  SIGMA  DESIGNS,  INC., a California
corporation (the "Company"),  and RIC Equity Limited and Banque Edouard Constant
(the "Investors").

         WHEREAS,  the Company and the Investors  have entered into that certain
Private  Securities  Subscription  Agreement,  dated as of the date  hereof (the
"Subscription  Agreement"),  pursuant  to which the  Company  will  issue to the
Investors  shares  of its  Series A  Preferred  Stock  (the  "Preferred  Stock")
convertible  as described in the  Subscription  Agreement to Common Stock of the
Company, no par value (the "Common Stock");

         WHEREAS,  pursuant to the terms of, and in partial  consideration  for,
the Investors' agreement to enter into the Subscription  Agreement,  the Company
has  issued to each  Investor a warrant  (the  "Warrant")  dated June 25,  1997,
exercisable  from time to time  within  three  (3) years  from the six (6) month
anniversary  of the date of the closing of the  purchase of the Warrants for the
purchase of an aggregate of 64,285  shares of Common Stock at a price  specified
in such Warrant;

         WHEREAS,  pursuant to the terms of, and in partial  consideration  for,
the Investors' agreement to enter into the Subscription  Agreement,  the Company
has agreed to provide  the  Investors  with  certain  registration  rights  with
respect to the Conversion Shares (as defined below);

         NOW, THEREFORE,  in consideration of the premises, the representations,
warranties,  covenants and agreements  contained  herein and in the Subscription
Agreement,  and for other  good and  valuable  consideration,  the  receipt  and
sufficiency  of which is hereby  acknowledged,  intending  to be  legally  bound
hereby, the parties hereto agree as follows:


                                    ARTICLE I
                                   DEFINITIONS

         SECTION 1.1. DEFINITIONS. Capitalized terms defined in the Subscription
Agreement or the Warrant shall have the same meanings  herein as are ascribed to
them therein. In addition,  the following terms shall have the meanings ascribed
below:

         "Act" means the Securities Act of 1933, as amended.

         "Material  Event"  means the  happening  of any event during the period
that the registration  statement described in Section 2 hereof is required to be
effective as a result of which, in the reasonable judgment of the Company,  such
registration  statement  or the related  prospectus  contains or may contain any
untrue  statement of a material  fact or omits or may omit to state any material
fact required to be stated therein or necessary to make the  statements  therein
not misleading.

         "Registrable  Securities"  means all of the Common  Stock and any other
securities  issued or issuable upon  conversion  of the Preferred  Stock or upon
exercise  of  the  Warrants  as  provided  therein  (together,  the  "Conversion
Shares");  provided,  however,  that any such conversion  shares which have been
resold to the public under the Act shall cease to be Registrable Securities upon
such resale.

         "Registration Statement" See Section 2.1(a).



<PAGE>


         "Rule 144" means Rule 144 promulgated under the Act.


                                   ARTICLE II
                               REGISTRATION RIGHTS

         SECTION 2.1.  FORM S-3 REGISTRATION STATEMENT.

                  (a) Filing of Form S-3 Registration Statement.  Subject to the
terms  and  conditions  of this  Agreement,  the  Company  shall  file  with the
Securities and Exchange  Commission  (the "SEC") no later than  forty-five  (45)
days following the date of this  Agreement a registration  statement on Form S-3
under the Act (the "Registration  Statement") for the registration of the resale
by the  Investors of Common Stock to be issued upon  conversion of the Preferred
Stock and upon exercise of the Warrant (or, if such form is unavailable for such
registration,  on such other form as is available for such  registration,  which
Registration Statement shall state that, in accordance with Rule 416 promulgated
under the Act, such Registration Statement also covers such indeterminate number
of additional shares of Common Stock).

                  (b) Effectiveness of Registration Statements. The Company will
use its  reasonable  best efforts to have the  Registration  Statement  declared
effective by the SEC by no later than one hundred  twenty  (120) days  following
the date of this  Agreement  and to have the  Registration  Statement  remain in
effect until the termination of this Agreement as provided in Section 5.1.

                  (c) Penalties for Failure to Obtain or Maintain  Effectiveness
of  Registration  Statement.  In the  event  the  Company  fails to  obtain  the
effectiveness  of a Registration  Statement  within the time period set forth in
Section 2.1(b),  the discount used to determine the Conversion Price (as defined
in the Certificate of  Determination  of Preferences of Series A Preferred Stock
of Sigma  Designs,  Inc.) of the  Preferred  Stock shall be adjusted one percent
(1%) higher for the first month after such one hundred  twenty  (120) day period
(or any portion  thereof) the  Registration  Statement is not  effective and for
each month thereafter (or any portion  thereof) that the Registration  Statement
is not effective, the discount shall be increased two percent (2%). In addition,
in the event the Company fails to maintain the  effectiveness  of a Registration
Statement (or the use of the  underlying  prospectus)  throughout the period set
forth in Section  2.1(b),  other than  temporary  suspensions  due to a Material
Event not  exceeding  sixty (60) days in any one twelve (12) month  period,  the
Company  shall  pay to the  Investors  on a pro  rata  basis  at the  end of any
calendar  month in which such a  suspension  has  occurred,  in cash  liquidated
damages in an amount equal to $250 per day. Such liquidated damages amount shall
not be payable with respect to deferrals of filing of a  Registration  Statement
or suspensions of the  effectiveness of a Registration  Statement (or use of the
underlying  prospectus)  in accordance  with Section  2.1(d),  although any such
deferrals or suspensions shall be counted towards the sixty (60) days allowed by
the preceding sentence.

                  (d) Material Event.  The Investors agree that, upon receipt of
any notice from the Company of the happening of a Material Event,  the Investors
will forthwith discontinue disposition of the Registrable Securities pursuant to
any Registration  Statement  described in Section 2 until the Investors' receipt
of copies of supplemented or amended prospectuses prepared by the Company (which
the Company  will use its  commercially  reasonable  efforts to prepare and file
promptly), and, if so directed by the Company, the Investors will deliver to the
Company all copies in their possession, other than permanent file copies then in
the  Investors'   possession,   of  the  prospectus  covering  such  Registrable
Securities  current at the time of receipt of such notice. In no event shall the
Company delay causing to be effective a supplement or  post-effective  amendment
to any Registration  Statement pursuant to Section 2 or the related  prospectus,
for more than sixty (60) days during any twelve (12) month period.


                                       -2-

<PAGE>



                                   ARTICLE III
                             REGISTRATION PROCEDURES

         SECTION 3.1. FILINGS; INFORMATION.  Whenever the Company is required to
effect or cause the registration of Registrable  Securities  pursuant to Section
2.1, the Company will use reasonable best efforts to effect the  registration of
such   Registrable   Securities  in  accordance  with  the  intended  method  of
disposition  thereof as quickly as practicable,  and in connection with any such
request:

                  (a) The Company  will as  expeditiously  as possible but in no
event later than the time period prescribed by Section 2.1(a),  prepare and file
with the SEC a  registration  statement on Form S-3 (if use of such form is then
available  to the Company  pursuant to the rules of the SEC and, if not, on such
other form promulgated by the SEC for which the Company then qualifies and which
counsel for the Company shall deem appropriate and which form shall be available
for the  sale of the  Registrable  Securities  to be  registered  thereunder  in
accordance  with the  provisions of this  Agreement  and in accordance  with the
intended  method  of  disposition  of  such  Registrable  Securities),  and  use
reasonable best efforts to cause such filed Registration Statement to become and
remain  effective  (pursuant  to Rule 415 under the Act or  otherwise),  and the
Company  will as  expeditiously  as possible  prepare and file with the SEC such
amendments  and  supplements to such  Registration  Statement and the prospectus
used in  connection  therewith  as may be  necessary  to keep such  Registration
Statement effective for the time periods prescribed by Section 2.1(b) and comply
with the provisions of the Act with respect to the disposition of all securities
covered by such Registration Statement during such period in accordance with the
intended methods of disposition by the Investors set forth in such  Registration
Statement. Such Registration Statement shall cover the resale of the Registrable
Securities only. No other securities shall be registered under such Registration
Statement.

                  (b) The Company will, prior to filing a Registration Statement
or  prospectus  or any amendment or  supplement  thereto  (excluding  amendments
deemed  to  result  from the  filing  of  documents  incorporated  by  reference
therein),  furnish to the  Investors  and one firm of counsel  representing  the
Investors,  copies  of such  Registration  Statement  as  proposed  to be filed,
together with exhibits  thereto,  which  documents will be subject to review and
approval by such  parties,  and  thereafter  furnish to the  Investors and their
counsel for their review and comment such number of copies of such  Registration
Statement,  each  amendment and  supplement  thereto (in each case including all
exhibits  thereto),  the  prospectus  included  in such  Registration  Statement
(including each preliminary  prospectus) and such other documents or information
as the Investors or counsel may  reasonably  request in order to facilitate  the
disposition of the Registrable Securities.

                  (c)  After  the  filing  of the  Registration  Statement,  the
Company  will  promptly  notify  the  Investors  of any  stop  order  issued  or
threatened by the SEC in connection  therewith and take all  reasonable  actions
required to prevent the entry of such stop order or to remove it if entered.

                  (d) The  Company  will  use  reasonable  best  efforts  to (i)
register or qualify such  Registrable  Securities under such other securities or
blue sky laws of such  jurisdictions  in the United  States as the Investors may
reasonably  (in light of its intended plan of  distribution)  request,  and (ii)
cause such  Registrable  Securities  to be  registered  with or approved by such
other  governmental  agencies  or  authorities  in the  United  States as may be
necessary by virtue of the business and operations of the Company and do any and
all other acts and things  that may be  reasonably  necessary  or  advisable  to
enable  the  Investors  to  consummate  the   disposition  of  the   Registrable
Securities;  provided  that the  Company  will not be  required  to (A)  qualify
generally  to do business in any  jurisdiction  where it would not  otherwise be
required to qualify but for this  paragraph  (d), (B) subject itself to taxation
in any such  jurisdiction or (C) consent or subject itself to general service of
process in any such jurisdiction.


                                       -3-

<PAGE>



                  (e) The Company will promptly  notify the  Investors  upon the
occurrence of any of the following events in respect of a Registration Statement
or related prospectus in respect of an offering of Registrable  Securities:  (i)
the declaration of the effectiveness of a Registration  Statement;  (ii) receipt
of any request for  additional  information  by the SEC or any other  federal or
state  governmental   authority  during  the  period  of  effectiveness  of  the
Registration  Statement  for  amendments  or  supplements  to  the  Registration
Statement  or related  prospectus;  (iii) the  issuance  by the SEC or any other
federal  or state  governmental  authority  of any  stop  order  suspending  the
effectiveness of the Registration Statement or the initiation of any proceedings
for  that  purpose;  (iv)  receipt  of  any  notification  with  respect  to the
suspension of the  qualification  or exemption from  qualification of any of the
Registrable  Securities  for  sale  in any  jurisdiction  or the  initiation  or
threatening of any  proceeding for such purpose;  (v) the happening of any event
which  makes  any  statement  made  in the  Registration  Statement  or  related
prospectus or any document  incorporated or deemed to be incorporated therein by
reference  untrue in any  material  respect or which  requires the making of any
changes in the Registration Statement,  related prospectus or documents so that,
the  Registration  Statement  and the  related  prospectus  will not contain any
untrue  statement of a material fact or omit to state any material fact required
to be stated therein or necessary to make the statements  therein not misleading
in the  light  of the  circumstances  in  which  they  were  made;  and (vi) the
Company's  reasonable  determination  that  a  post-effective  amendment  to the
Registration Statement would be appropriate;  and the Company will promptly make
available  to the  Investors  any such  supplement  or  amendment to the related
prospectus.

                  (f) The Company will enter into customary  agreements and take
such other actions as are reasonably required in order to expedite or facilitate
the  disposition  of such  Registrable  Securities  (the Investors may, at their
option, require that any or all of the representations, warranties and covenants
of the  Company  also be made to and for  the  benefit  of the  Investors).  The
Investors understand that no sales of Shares may be underwritten and the Company
is under no obligation to enter into an underwriting agreement.

                  (g) The Company  will  otherwise  comply  with all  applicable
rules and regulations of the SEC, including, without limitation, compliance with
applicable  reporting  requirements  under the Exchange Act of 1934,  as amended
(the "Exchange Act"), and will make available to its security  holders,  as soon
as reasonably practicable, an earning statement covering a period of twelve (12)
months,  beginning  within  three (3)  months  after the  effective  date of the
Registration Statement,  which earning statement shall satisfy the provisions of
Section 11(a) of the Act.

                  (h) The Company will use  commercially  reasonable  efforts to
secure   designation  of  all  such  Registrable   Securities  covered  by  such
Registration  Statement as a Nasdaq "national market system security" within the
meaning of Rule 11Aa2-1 of the SEC.

                  (i) The Company  will appoint a transfer  agent and  registrar
for all such Registrable  Securities covered by such Registration  Statement not
later than the effective date of such Registration Statement.

                       The Company may require the Investors to promptly furnish
in writing to the Company such  information  regarding the  distribution  of the
Registrable  Securities as the Company may from time to time reasonably  request
and such other  information as may be legally  required in connection  with such
registration  including,  without  limitation,  all such  information  as may be
requested by the SEC or the National  Association  of Securities  Dealers,  Inc.
(the  "NASD").  The  Investors  agree to provide  such  information  as shall be
reasonably  requested  in  connection  with such  registration  within  ten (10)
business days after  receiving such written request and the Company shall not be
responsible for any delays in obtaining or maintaining the  effectiveness of the
Registration  Statement caused by the Investors'  failure to timely provide such
information.  The  Investors  agree  that,  upon  receipt of any notice from the
Company of the  happening of any event of the kind  described in Section  3.1(e)
hereof,  the Investors  will  forthwith  discontinue  disposition of Registrable
Securities  pursuant to the  Registration  Statement  covering such  Registrable
Securities  until the Investors'  receipt of the copies of the  supplemented  or
amended prospectus contemplated by Section 3.1(e) hereof, and, if so directed by
the Company,


                                       -4-

<PAGE>



the Investors will deliver to the Company all copies,  other than permanent file
copies then in the Investors' possession, of the most recent prospectus covering
such Registrable  Securities at the time of receipt of such notice. In the event
the Company  shall give such notice,  the Company shall extend the period during
which such Registration  Statement shall be maintained  effective (including the
period  referred to in Section  3.1(a)  hereof) by the number of days during the
period from and including  the date of the giving of notice  pursuant to Section
3.1(e) hereof to the date when the Company shall make available to the Investors
a prospectus supplemented or amended to conform with the requirements of Section
3.1(e) hereof.

         SECTION  3.2.   REGISTRATION   EXPENSES.   In   connection   with  each
Registration  Statement,  the  Company  shall  pay  the  following  registration
expenses   incurred  in  connection  with  the   registration   thereunder  (the
"Registration  Expenses"):  (i) all  registration and filing fees, (ii) fees and
expenses  of  compliance  with  securities  or blue  sky  laws,  (iii)  printing
expenses,  (iv) the Company's internal expenses (including,  without limitation,
all salaries and expenses of its  officers  and  employees  performing  legal or
accounting  duties),  (v) the fees and expenses  incurred in connection with the
listing of the Registrable Securities, (vi) subject to the limitations set forth
in the Subscription Agreement,  reasonable fees and disbursements of counsel for
the Company and the Investors and  customary  fees and expenses for  independent
certified public accountants  retained by the Company (including the expenses of
any  comfort  letters  or costs  associated  with the  delivery  by  independent
certified  public  accountants of a comfort letter or comfort letters  requested
pursuant  to Section  3.1(h)  hereof),  and (vii) the fees and  expenses  of any
special experts  retained by the Company in connection  with such  registration.
The Company shall have no obligation to pay any underwriting fees,  discounts or
commissions  attributable to the sale of Registrable Securities,  or the cost of
any  special  audit  required  by the  Investors,  such costs to be borne by the
Investors.


                                   ARTICLE IV
                        INDEMNIFICATION AND CONTRIBUTION

         SECTION  4.1.  INDEMNIFICATION  BY THE COMPANY.  The Company  agrees to
indemnify and hold harmless each Investor, its partners,  Affiliates,  officers,
directors,  employees and duly authorized  agents, and each Person or entity, if
any, who controls such  Investor  within the meaning of Section 15 of the Act or
Section  20 of  the  Exchange  Act,  together  with  the  partners,  Affiliates,
officers,  directors,  employees and duly authorized  agents of such controlling
Person or entity (collectively, the "Controlling Persons"), from and against any
loss, claim, damage,  liability,  reasonable  attorneys' fees, costs or expenses
and  costs  and  expenses  of   investigating   and  defending  any  such  claim
(collectively,  "Damages"),  joint or several, and any action in respect thereof
to which each Investor, its partners, Affiliates, officers, directors, employees
and duly authorized  agents,  and any such Controlling Person may become subject
under the Act or otherwise,  insofar as such Damages (or  proceedings in respect
thereof) arise out of, or are based upon, any untrue statement or alleged untrue
statement  of  a  material  fact  contained  in  any   Registration   Statement,
prospectus,  supplement or amendment  relating to the Registrable  Securities or
any preliminary prospectus, or arises out of, or are based upon, any omission or
alleged  omission to state therein a material fact required to be stated therein
or necessary to make the statements  therein not  misleading,  except insofar as
the same are based upon information  furnished in writing to the Company by each
Investor  expressly for use therein,  and shall  reimburse  each  Investor,  its
partners, Affiliates, officers, directors, employees and duly authorized agents,
and each such  Controlling  Person for any legal and other  expenses  reasonably
incurred  by such  Investor,  its  partners,  Affiliates,  officers,  directors,
employees  and  duly  authorized  agents,  or any  such  Controlling  Person  in
investigating  or defending  or preparing to defend  against any such Damages or
proceedings;  provided,  however,  that the Company  shall not be liable to such
Investor to the extent that (i) such  Investor  failed to send or deliver a copy
of the final prospectus with or prior to the delivery of written confirmation of
the sale by such  Investor  to the  Person  asserting  the claim from which such
Damages arise,  and (ii) the final  prospectus  would have corrected such untrue
statement or alleged untrue  statement or such omission or alleged omission upon
which the claim is asserted and from which the Damages arise.


                                       -5-

<PAGE>



         SECTION 4.2. INDEMNIFICATION BY THE INVESTORS.  Each Investor agrees to
indemnify and hold harmless the Company,  its  partners,  Affiliates,  officers,
directors,  employees and duly authorized  agents and each Person or entity,  if
any,  who  controls  the Company  within the meaning of Section 15 of the Act or
Section  20 of  the  Exchange  Act,  together  with  the  partners,  Affiliates,
officers,  directors,  employees and duly authorized  agents of such controlling
Person,  to the same extent as the foregoing  indemnity  from the Company to the
Investor,  but only with reference to information related to the Investor or its
plan of distribution,  furnished in writing by the Investor or on the Investor's
behalf expressly for use in any Registration Statement or prospectus relating to
the  Registrable  Securities,  or any  amendment or supplement  thereto,  or any
preliminary  prospectus.  In case any  action  or  proceeding  shall be  brought
against the Company or its partners, Affiliates,  officers, directors, employees
or duly  authorized  agents  or any such  controlling  Person  or its  partners,
Affiliates, officers, directors, employees or duly authorized agents, in respect
of which  indemnity may be sought against the Investor,  the Investor shall have
the rights and duties  given to the  Company,  and the Company or its  partners,
Affiliates,  officers,  directors,  employees or duly authorized agents, or such
controlling Person, or its partners, Affiliates,  officers, directors, employees
or duly authorized agents,  shall have the comparable rights and duties given to
the  Investor  by  Section  4.1.  The  Company  shall  be  entitled  to  receive
indemnities  on  customary  terms from  Underwriters,  selling  brokers,  dealer
managers and similar  securities  industry  professionals  participating  in the
distribution,  to the same extent as provided above, with respect to information
so  furnished  in writing by such  persons  specifically  for  inclusion  in any
prospectus or Registration Statement.

         SECTION 4.3.  CONDUCT OF  INDEMNIFICATION  PROCEEDINGS.  Promptly after
receipt  by any person or entity in  respect  of which  indemnity  may be sought
pursuant to Section 4.1 or 4.2 (an  "Indemnified  Party") of notice of any claim
or the  commencement of any action,  the Indemnified  Party shall, if a claim in
respect  thereof  is to be made  against  the  person or  entity  from whom such
indemnity  may  be  sought  (an  "Indemnifying  Party"),   promptly  notify  the
Indemnifying  Party in writing of the claim or the  commencement of such action.
In the event an Indemnified  Party shall fail to give such notice as provided in
this  Section  4.3 and the  Indemnifying  Party to whom notice was not given was
unaware of the  proceeding  to which such  notice  would  have  related  and was
materially  prejudiced by the failure to give such notice,  the  indemnification
provided  for in Section 4.1 or 4.2 shall be reduced to the extent of any actual
prejudice  resulting  from such  failure  to so notify the  Indemnifying  Party;
provided,  that the failure to notify the  Indemnifying  Party shall not relieve
the  Indemnifying  Party from any liability  which it may have to an Indemnified
Party other than that  liability  arising  under Section 4.1 or 4.2. If any such
claim or action  shall be brought  against an  Indemnified  Party,  and it shall
notify the Indemnifying Party thereof,  the Indemnifying Party shall be entitled
to  participate  therein,  and, to the extent that it wishes,  jointly  with any
other similarly  notified  Indemnifying  Party,  to assume the defense  thereof.
After  notice  from  the  Indemnifying  Party  to the  Indemnified  Party of its
election to assume the defense of such claim or action,  the Indemnifying  Party
shall  not be liable to the  Indemnified  Party for any legal or other  expenses
subsequently  incurred by the  Indemnified  Party in connection with the defense
thereof  other  than  reasonable  costs  of  investigation;  provided  that  the
Indemnified  Party shall have the right to employ separate  counsel to represent
the  Indemnified  Party  and  its  controlling  persons  who may be  subject  to
liability  arising out of any claim in respect of which  indemnity may be sought
by the  Indemnified  Party  against  the  Indemnifying  Party,  but the fees and
expenses  of such  counsel  shall be for the account of such  Indemnified  Party
unless (i) the Indemnifying  Party and the Indemnified Party shall have mutually
agreed to the  retention of such counsel or (ii) in the  reasonable  judgment of
the Company and such Indemnified  Party,  representation  of both parties by the
same counsel  would be  inappropriate  due to actual or  potential  conflicts of
interest between them, it being understood, however, that the Indemnifying Party
shall  not,  in  connection  with any one such claim or action or  separate  but
substantially  similar  or related  claims or  actions in the same  jurisdiction
arising out of the same general allegations or circumstances,  be liable for the
fees and expenses of more than one separate  firm of  attorneys  (together  with
appropriate local counsel) at any time for all Indemnified  Parties, or for fees
and expenses that are not reasonable.  No Indemnifying Party shall,  without the
prior written  consent of the  Indemnified  Party,  effect any settlement of any
claim or pending or threatened  proceeding  in respect of which the  Indemnified
Party is or could  have  been a party  and  indemnity  could  have  been  sought
hereunder  by  such  Indemnified  Party,  unless  such  settlement  includes  an
unconditional release of such

                                       -6-

<PAGE>



Indemnified  Party from all liability  arising out of such claim or  proceeding.
Whether or not the defense of any claim or action is assumed by the Indemnifying
Party,  such  Indemnifying  Party will not be subject to any  liability  for any
settlement made without its consent.

         SECTION 4.4. CONTRIBUTION.  If the indemnification provided for in this
Article IV is unavailable to the  Indemnified  Parties in respect of any Damages
referred to herein,  then each Indemnifying  Party, in lieu of indemnifying such
Indemnified  Party,  shall  contribute  to the  amount  paid or  payable by such
Indemnified  Party as a result of such Damages as between the Company on the one
hand and the Investors on the other,  in such  proportion as is  appropriate  to
reflect the relative  fault of the Company and of the  Investors  in  connection
with such statements or omissions,  as well as other  equitable  considerations.
The  relative  fault of the Company on the one hand and of the  Investors on the
other shall be  determined  by  reference  to, among other  things,  whether the
untrue or alleged untrue statement of a material fact or the omission or alleged
omission to state a material fact relates to information supplied by such party,
and  the  parties'  relative  intent,  knowledge,   access  to  information  and
opportunity to correct or prevent such statement or omission.

         The  Company  and each  Investor  agrees  that it would not be just and
equitable if  contribution  pursuant to this Section 4.4 were  determined by pro
rata allocation or by any other method of allocation which does not take account
of  the  equitable  considerations  referred  to in  the  immediately  preceding
paragraph. The amount paid or payable by an Indemnified Party as a result of the
Damages  referred to in the immediately  preceding  paragraph shall be deemed to
include, subject to the limitations set forth above, any legal or other expenses
reasonably  incurred by such Indemnified Party in connection with  investigating
or defending any such action or claim.  Notwithstanding  the  provisions of this
Section  4.4,  contribution  by any seller of  Registrable  Securities  shall be
limited to the gross amount of proceeds received by such seller from the sale of
such Registrable  Securities.  No Person guilty of fraudulent  misrepresentation
(within  the  meaning  of  Section  11(f)  of the  Act)  shall  be  entitled  to
contribution   from  any  Person   who  was  not   guilty  of  such   fraudulent
misrepresentation.


                                    ARTICLE V
                                  MISCELLANEOUS

         SECTION 5.1. TERM. The  registration  rights provided to the holders of
Registrable  Securities  hereunder  shall  terminate  on the  earlier of (i) the
second  anniversary of the date of this Agreement,  or (ii) as to any Buyer, the
date as of which such Buyer may sell all of the  Registrable  Securities that it
holds in  reliance  upon  Rule 144  promulgated  under  the  Securities  Act (or
successor thereto),  provided, however, that the provisions of Article IV hereof
shall survive any termination of this Agreement.

         SECTION  5.2.  RULE 144.  The Company  covenants  that it will file all
reports  required  to be  filed by it under  the Act and the  Exchange  Act in a
timely  manner  and  that it  will  take  such  further  action  as  holders  of
Registrable  Securities may reasonably request,  all to the extent required from
time to time to enable the  Investors  to sell  Registrable  Securities  without
registration  under the Act within the limitation of the exemptions  provided by
(a) Rule 144, as such Rule may be amended from time to time,  or (b) any similar
rule or regulation  hereafter  adopted by the SEC. If at any time the Company is
not required to file such  reports,  it will,  upon the request of any holder of
Registrable  Securities,  make publicly  available other  information so long as
necessary  to  permit  sales  pursuant  to Rule  144.  Upon the  request  of the
Investors,  the Company will deliver to the Investors a written  statement as to
whether it has complied with such requirements.

         SECTION  5.3.  AMENDMENT  AND  MODIFICATION.   Any  provision  of  this
Agreement  may be waived,  provided  that such  waiver is set forth in a writing
executed by the party against whom the enforcement of such waiver is sought. The
provisions of this Agreement, including the provisions of this sentence, may not
be amended, modified or supplemented, and waivers or consents to departures from
the provisions hereof may not


                                       -7-

<PAGE>



be given,  unless the Company has obtained the written consent of the holders of
a majority of the then outstanding Registrable  Securities.  Notwithstanding the
foregoing,  the waiver of any  provision  hereof  with  respect to a matter that
relates  exclusively  to the rights of holders of Registrable  Securities  whose
securities  are being sold  pursuant to a  Registration  Statement  and does not
directly  or  indirectly  affect  the  rights of other  holders  of  Registrable
Securities  may be given by holders of at least a  majority  of the  Registrable
Securities  being sold by such  holders;  provided  that the  provisions of this
sentence may not be amended,  modified or supplemented except in accordance with
the  provisions  of the  immediately  preceding  sentence.  No course of dealing
between or among any Person having any interest in this Agreement will be deemed
effective to modify, amend or discharge any part of this Agreement or any rights
or obligations of any person under or by reason of this Agreement.

         SECTION 5.4. SUCCESSORS AND ASSIGNS;  ENTIRE AGREEMENT.  This Agreement
and all of the provisions  hereof shall be binding upon and inure to the benefit
of the parties hereto and their respective successors and assigns. The Investors
may  assign  their  rights  under this  Agreement  to any  subsequent  holder of
Preferred Stock, Warrants or Conversion Shares,  provided that the Company shall
have the right to require  any  holder of  Registrable  Securities  to execute a
counterpart  of this  Agreement  as a condition  to such  holder's  claim to any
rights hereunder.  This Agreement,  together with the Subscription Agreement and
the  Warrants  sets forth the entire  agreement  and  understanding  between the
parties as to the  subject  matter  hereof and merges and  supersedes  all prior
discussions, agreements and understandings of any and every nature among them.

         SECTION  5.5.  SEPARABILITY.  In the event that any  provision  of this
Agreement or the application of any provision  hereof is declared to be illegal,
invalid or otherwise  unenforceable  by a court of competent  jurisdiction,  the
remainder of this Agreement shall not be affected except to the extent necessary
to delete such illegal, invalid or unenforceable provision unless that provision
held invalid shall  substantially  impair the benefits of the remaining portions
of this Agreement.

         SECTION  5.6.  NOTICES.  All  notices,  demands,  requests,   consents,
approvals or other communications required or permitted to be given hereunder or
which are given with respect to this Agreement  shall be in writing and shall be
personally  served or deposited in the mail,  registered  or  certified,  return
receipt  requested,  postage  prepaid,  or delivered  by  reputable  air courier
service with charges prepaid, or transmitted by hand delivery,  telegram,  telex
or  facsimile,  addressed as set forth below,  or to such other  address as such
party  shall have  specified  most  recently  by written  notice:  (i) if to the
Company,  to: Sigma Designs,  Inc.,  46501 Landing Parkway,  Fremont,  CA 94538;
Attention:  Mr. Thinh Q. Tran, Facsimile No.: (510) 770-2691, with copies (which
shall not constitute notice) to: Wilson Sonsini Goodrich & Rosati, 650 Page Mill
Road,  Palo Alto, CA 94304  Attention:  Tor Braham,  Esq.,  Facsimile No.: (415)
493-6811;  and (ii) if to the Investors,  to either (a) RIC Equity Limited,  c/o
Rana Investment Company,  P.O. Box 60148, Riyadh 11545, Saudi Arabia, Phone No.:
(9661) 462-6262, Fax: (9661) 462-8817 or (b) Banque Edouard Constant, c/o KERNCO
Trust  SA,  2, rue  Jargonnant  P.O.  Box 6432 CH 1211  Geneva  6,  Switzerland,
Attention:  Sunder  Advoni Phone No.:  (011)(412)  270-77038,  Fax:  (011) (412)
270-77040.  Notice shall be deemed given on the date of service or  transmission
if personally  served or  transmitted  by telegram,  telex or facsimile.  Notice
otherwise  sent as provided  herein shall be deemed given on the third  business
day following the date mailed or on the second  business day following  delivery
of such notice by a reputable air courier service.

         SECTION 5.7.  GOVERNING  LAW. THIS  AGREEMENT  SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF CALIFORNIA, WITHOUT GIVING
EFFECT TO PROVISIONS GOVERNING CONFLICTS OF LAWS THEREOF.

         SECTION  5.8.  HEADINGS.   The  headings  in  this  Agreement  are  for
convenience of reference only and shall not constitute a part of this Agreement,
nor shall they affect their meaning, construction or effect.


                                       -8-

<PAGE>



         SECTION 5.9.  COUNTERPARTS.  This Agreement may be executed in multiple
counterparts, each of which shall be deemed to be an original instrument and all
of which together shall constitute one and the same instrument.

         SECTION 5.10. FURTHER  ASSURANCES.  Each party shall cooperate and take
such action as may be  reasonably  requested by another  party in order to carry
out  the  provisions  and  purposes  of  this  Agreement  and  the  transactions
contemplated hereby.

         SECTION 5.11.  ARBITRATION;  REMEDIES.  Any dispute that arises between
the  parties to this  Agreement  shall  first be  submitted  for  resolution  to
arbitration  under the rules of the American  Arbitration  Association  of Santa
Clara County, California. In the event of a breach or a threatened breach by any
party to this  Agreement  of its  obligations  under this  Agreement,  any party
injured or to be injured by such breach will be entitled to specific performance
of its rights under this Agreement or to injunctive relief, in addition to being
entitled to exercise all rights  provided in this  Agreement and granted by law.
The parties agree that the  provisions of this Agreement  shall be  specifically
enforceable,  it being agreed by the parties  that the remedy at law,  including
monetary  damages,   for  breach  of  any  such  provision  will  be  inadequate
compensation  for any loss and that any defense or  objection  in any action for
specific performance or injunctive relief that a remedy at law would be adequate
is waived.

                                       -9-

<PAGE>



         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by the undersigned, thereunto duly authorized, as of the date first set
forth above.


                                   SIGMA DESIGNS, INC.
                         

                                   By:
                                        ----------------------------------------
                                        Thinh Q. Tran
                                        Chairman and Chief Executive Officer


                                   INVESTOR


                                   By:
                                        ----------------------------------------
                                        Name:
                                        Title:


                                   INVESTOR


                                   By:
                                        ----------------------------------------
                                        Name:
                                        Title:


                                      -10-






                                                                     EXHIBIT 5.1



                                 August 6, 1997


Sigma Designs, Inc.
46501 Landing Parkway
Fremont, CA  94538

         RE:      SIGMA DESIGNS, INC. REGISTRATION STATEMENT ON FORM S-3

Ladies and Gentlemen:

         We have examined the Registration  Statement on Form S-3 to be filed by
you with  the  Securities  and  Exchange  Commission  on  August  7,  1997  (the
"Registration  Statement"),  in  connection  with  the  registration  under  the
Securities Act of 1933, as amended, of 1,100,000 shares of your Common Stock, no
par value (the "Shares"),  all of which are authorized and will be issued to the
selling  shareholders  identified in the  Registration  Statement  (the "Selling
Shareholders").  The Shares are to be offered by the  Selling  Shareholders  for
sale to the public as described in the Registration  Statement.  As your counsel
in connection with this transaction,  we have examined the proceedings taken and
proposed to be taken in connection with the sale of the Shares.

         It is our opinion that, upon completion of the proceedings  being taken
or contemplated to be taken prior to the  registration of the Shares,  including
such proceedings to be carried out in accordance with the securities laws of the
various states, where required,  the Shares, when sold in the manner referred to
in the Registration  Statement,  will be legally and validly issued,  fully paid
and nonassessable.

         We consent to the use of this opinion as an exhibit to the Registration
Statement,  and further consent to the use of our name wherever appearing in the
Registration  Statement,  including the Prospectus  constituting a part thereof,
and any amendment thereto.

                                            Very truly yours,

                                            WILSON SONSINI GOODRICH & ROSATI
                                            Professional Corporation


                                            /s/ WILSON SONSINI GOODRICH & ROSATI




                                                                    Exhibit 23.1


                          INDEPENDENT AUDITORS' CONSENT


         We consent  to the  incorporation  by  reference  in this  Registration
Statement of Sigma  Designs,  Inc. on Form S-3 of our report dated  February 28,
1997, appearing in the Annual Report on Form 10-K of Sigma Designs, Inc. for the
year  ended  January  31,  1997 and to the  reference  to us under  the  heading
"Experts" in the Prospectus, which is part of this Registration Statement.


DELOITTE & TOUCHE LLP
San Jose, California
August 4, 1997






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