SIGMA DESIGNS INC
S-3, 1998-03-12
COMPUTER PERIPHERAL EQUIPMENT, NEC
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        As  filed with the Securities  and Exchange Commission on March 12, 1998
                                                  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:
                              DAVID A. SEGRE, 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(2)                  Price(2)                 Fee
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                     <C>                        <C>                         <C>                      <C>    

Common Stock no par value............   3,405,000 shares           $3.06                       $10,419,300              $3,074

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

(1)  Includes  shares of Common  Stock  which may be  offered  pursuant  to this
     Registration   Statement  consisting  of  3,400,000  shares  issuable  upon
     conversion of 5,000 shares of Series B Convertible  Preferred  Stock of the
     Company (the "Series B Preferred  Stock") and issuable upon exercise of the
     Warrants  issued in  connecton  with the issuance of the Series B Preferred
     Stock (the "Warrants").  For purposes of estimating the number of shares of
     Common  Stock to be included in this  Registration  Statement,  the Company
     calculated  200% of the  number  of  shares of  Common  Stock  issuable  in
     connection  with the conversion of the Company's  Series B Preferred  Stock
     (based on a  conversion  price which is the average of the six lowest daily
     trade prices for the twenty trading day period ending February 9, 1998) and
     the  exercise of the  Warrants.  In addition to the shares set forth in the
     table,  pursuant to Rule 416 under the  Securities Act of 1933, as amended,
     this  Registration   Statement  also  covers  an  indeterminate  number  of
     additional shares of Common Stock as may become issuable upon conversion of
     or in respect of the Company's  Series B Preferred  Stock and Warrants,  as
     such number may be adjusted as a result of stock  splits,  stock  dividends
     and antidilution provisions (including floating rate conversion prices).

(2)  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 March 6, 1998, 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>
INFORMATION   CONTAINED  HEREIN  IS  SUBJECT  TO  COMPLETION  OR  AMENDMENT.   A
REGISTRATION  STATEMENT  RELATING  TO THESE  SECURITIES  HAS BEEN FILED WITH THE
SECURITIES  AND EXCHANGE  COMMISSION.  THESE  SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION  STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE  AN  OFFER  TO  SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE  SECURITIES
IN ANY STATE IN WHICH SUCH OFFER,  SOLICITATION  OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.

                   SUBJECT TO COMPLETION DATED MARCH 12, 1998

                                   PROSPECTUS


                                3,405,000 SHARES

                               SIGMA DESIGNS, INC.

                                  COMMON STOCK


         This  Prospectus may be used only in connection  with the resale,  from
time to time, of up to 3,405,000  shares (the "Shares") of Common Stock,  no par
value per share (the "Common  Stock"),  of Sigma Designs,  Inc.  ("Sigma" or the
"Company"),   by  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 or their respective pledgees, donees, transferees or
other  successors  in  interest 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 privately-
negotiated  transactions,  through the  writing of options or the Shares,  short
sales  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 March 9, 1998,  the last sale price for the Common
Stock as reported on the Nasdaq National Market was $3.19 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     , 1998

<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 Quarterly Report on Form 10-Q for the quarter ended July 31,
1997;  (iv) The  Company's  Quarterly  Report on Form 10-Q for the quarter ended
October 31, 1997; (v) the Company's  Proxy  Statement  relating to the Company's
Annual  Meeting  of  Shareholders  to be  held on June 6,  1997,  and  (vi)  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.  Through the end of the third quarter of fiscal year
1998, the Company's total  accumulated  deficit is $38,141,000.  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.

         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,  Chromatic 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 five 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.

         The Company derives a substantial portion of its revenues from sales to
the Asia Pacific  region,  a region of the world subject to increased  levels of
economic  instability.  There can be no assurance that such instability will not
have a material adverse effect on the Company's results of operations.

         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.

         Potential  for  Dilution.

         Series B  Preferred  Stock.  As of March 9, 1998,  5,000  shares of the
Company's Series B Convertible  Preferred Stock (the "Series B Preferred Stock")
were  issued and  outstanding.  Each share of the  Series B  Preferred  Stock is
convertible  into such  number of shares  of Common  Stock as is  determined  by
dividing  the stated  value  ($1,000) of the share of Series B  Preferred  Stock
(under certain circumstances,  such value may be increased by a premium based on
the number of days the  Series B  Preferred  Stock is held) by the then  current
Conversion  Price (which is  deteremined by reference to the then current market
price).  If converted on March 9, 1998, the Series B Preferred  Stock would have
been convertible into  approximately  1,666,667 shares of Common Stock, but this
number of  shares  could  prove to be  significantly  greater  in the event of a
decrease in the trading  price of the Common  Stock.  Purchasers of Common Stock
could  therefore  experience  substantial  dilution  of  their  investment  upon
conversion of the Series B Preferred Stock. The shares of Series B Stock are not
registered  and may be sold only if registered  under the Securities Act or sold
in acordance with an applicable  exemption from registration,  such as Rule 144.
The  shares of Common  Stock  into  which the  Series B  Preferred  Stock may be
converted are being registered pursuant to this Registration Statement.

         As of March 9, 1998,  "Warrants"  to purchase  50,000  shares of Common
Stock issued to the purchasers of the Series B Preferred  Stock and  exercisable
beginning  on May 1,  1998 for a period  of  three  years at a price  based on a
premium to the market  price as of April 30, 1998 (as may be adjusted  from time
to time under certain antidilution  provisions) were outstanding.  The shares of
Common Stock  issuable  upon  exercise of these  warrants  are being  registered
pursuant to this Registration Statement.

         As of March 9, 1998, 5,754,398 shares of Common Stock were reserved for
issuance  upon  exercise  of the  Company's  outstanding  warrants  and  options
(excluding the Warrants) and an additional 3,400,000 shares of Common Stock were
reserved for issuance upon conversion of the preferred stock and exercise of the
Warrants.  At March 9,  1998,  there  were  11,736,415  shares of  Common  Stock
outstanding.  Of these  outstanding  shares,  11,714,632  were freely  tradeable
without restriction under the Securities Act unless held by affiliates.

         Series A Preferred  Stock.  As of March 9, 1998,  23,800  shares of the
Company's Series A Convertible  Preferred Stock (the "Series A Preferred Stock")
were  issued and  outstanding.  Each share of the  Series A  Preferred  Stock is
convertible  into such  number of shares  of Common  Stock as is  determined  by
dividing the stated value ($100) of the share of Series A Preferred Stock by the
then current  Conversion  Price (which is  deteremined  by reference to the then
current  market  price).  If converted on March 9, 1998,  the Series A Preferred
Stock would have been  convertible into  approximately  790,698 shares of Common
Stock, but this number of shares could prove to be significantly  greater in the
event of a decrease  in the trading  price of the Common  Stock.  Purchasers  of
Common  Stock could  therefore  also  experience  substantial  dilution of their
investment upon conversion of the Series A Preferred Stock. The shares of Series
A  Stock  are not  registered  and may be sold  only  if  registered  under  the
Securities  Act  or  sold  in  acordance  with  an  applicable   exemption  from
registration,  such as Rule 144. A portion  of the  shares of Common  Stock into
which the  Series A  Preferred  Stock  may be  converted  have  been  previously
registered  and  the  remaining  portion  will  be  registered   pursuant  to  a
Registration Statement to be filed in the future.

         As of March 9, 1998, warrants to purchase 57,142 shares of Common Stock
issued  to the  purchasers  of the  Series A  Preferred  Stock  and  exercisable
beginning  on April 30,  1998 for a period of three  years at a price based on a
premium to the market  price as of April 30, 1998 (as may be adjusted  from time
to time under certain antidilution  provisions) were outstanding.  The shares of
Common Stock  issuable  upon  exercise of these  warrants  have been  previously
registered  and  the  remaining  portion  will  be  registered   pursuant  to  a
Registration Statement to be filed in the future.

                                       -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.


                                      -10-

<PAGE>


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 Kapok Computers,  TigerDirect,  Inc., Royal Computer,
ASE Technologies,  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.

         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 January 31,  1998,  the  Company  had a staff of 35 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 certain  software  and
hardware  features in current  and future  versions  of  REALmagic.  The Company
currently has eleven pending patent  applications for its REALmagic  technology.
Five  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  January  31,  1998,  the  Company  had 71  full-time  employees,
including 35 in research and development,  12 in marketing,  sales, and support,
11 in operations, and 13 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.

Certain Accounting Changes

In February 1997, the Financial  Accounting  Standards Board issued Statement of
Financial  Accounting  Standards No. 128,  "Earnings per Share" (SFAS 128). SFAS
128 replaced the  previously  reported  primary and fully  diluted  earnings per
share with  basic and  diluted  earnings  per share.  Basic  earnings  per share
excludes  dilution  and is computed by dividing  net income  available to common
shareholders  by the  weighted  average  of common  shares  outstanding  for the
period.  Diluted  earnings per share reflects the potential  dilution that could
occur if securities or other  contracts to issue common stock were  exercised or
converted into common stock.

<TABLE>
The following table presents selected financial data which includes earnings per
share amounts  calculated in  accordance  with SFAS 128 (the table  includes all
periods for which  earnings per share amounts were  previously  presented in the
Form 10-K and Forms 10-Q which are incorporated by reference in this document):

<CAPTION>
(Dollars in 000's)                                             Fiscal year ended January 31,
                                             1997         1996         1995          1994           1993

<S>                                         <C>        <C>          <C>            <C>             <C>    
Net Revenues                                $41,214     $26,374     $43,700         $34,989        $27,058
Net Income (Loss) Available to
Common Shareholders                          $1,529    ($14,708)    ($8,773)       ($29,546)       ($7,166)
Net Income (Loss) Per Share
  - Basic                                     $0.16      ($1.88)     ($1.20)         ($5.15)        ($1.37)
  - Diluted                                   $0.14      ($1.88)     ($1.20)         ($5.15)        ($1.37)
Shares Used in Computation
  - Basic                                     9,843       7,822       7,307           5,733          5,234
  - Diluted                                  11,259       7,822       7,307           5,733          5,234
</TABLE>

<TABLE>
<CAPTION>
                                                                      Quarter ended,
                                        October 31,   July 31,    April 30,    January 31,    October 31,  July 31,     April
                                            1997         1997        1997          1997          1996        1996     30, 1996

<S>                                        <C>           <C>         <C>          <C>           <C>        <C>        <C>   
Net Revenues                               $10,022       $8,593      $8,507       $9,674        $12,727    $10,078    $8,735
Net Income (Loss) Available to
Common Shareholders                           ($64)     ($4,406)      ($598)        $222         $1,062       $349     ($104)
Net Income (Loss) Per Share
  - Basic                                   ($0.01)      ($0.40)     ($0.06)       $0.02          $0.11      $0.04    ($0.01)
  - Diluted                                 ($0.01)      ($0.40)     ($0.06)       $0.02          $0.09      $0.03    ($0.01)
Shares Used in Computation
  - Basic                                   10,970       10,916      10,852       10,318          9,931      9,773     9,267
  - Diluted                                 10,970       10,916      10,852       11,615         11,441     11,377     9,267
</TABLE>

                                      -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 March 9, 1998 by the
Selling Shareholders as follows: (i) the name of each Selling Shareholder;  (ii)
the number of the Company's outstanding shares of Common Stock benefically owned
by  each  Selling   Shareholder   (including  shares  obtainable  under  options
exercisable  within sixty (60) days of such date) prior to the offering  hereby;
(iii) the number of shares of Common Stock being  offered  hereby;  and (iv) the
number of and percentage of the Company's  outstanding shares of Common Stock to
be beneficially  owned by each Selling  Shareholder after completion of the sale
of Common Stock. 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.  The  Selling  Shareholders  have not held any
position or office or had a material relationship with the Company or any of its
affiliates within the past three years.

<CAPTION>
                                                                                                    Shares Beneficially    
                                                                                                            Owned           
                                                   Number of Shares               Number of          After Offering(1)(2)   
                                               Beneficially Owned Prior to         Shares          ----------------------  
                Name                                  Offering(2)               Being Offered      Number        Percent
- -------------------------------------         -----------------------------     --------------     ----------------------
<S>                                                   <C>                        <C>                    <C>         <C>
RGC International Investors, LDC(1)                   1,700,000                  1,700,000(3)           0           0

Tsunami Capital, Inc.                                     5,000                      5,000              0           0

<FN>
- ---------------------------
*     Represents less than 1%

(1)  The number of shares set forth in the table  represents  an estimate of the
     number of shares of Common Stock to be offered by the Selling  Stockholder.
     The actual  number of shares of Common Stock  issuable  upon  conversion of
     Series B Preferred Stock and exercise of the Warrants is indeterminate,  is
     subject  to  adjustment  and  could be  materially  less or more  than such
     estimated  number  depending  on factors  which  cannot be predicted by the
     Company at this time,  including,  among other  factors,  the future market
     price of the  Common  Stock.  The actual  number of shares of Common  Stock
     offered hereby,  and included in the  Registration  Statement of which this
     Prospectus is a part,  includes such additional  number of shares of Common
     Stock  as may be  issued  or  issuable  upon  conversion  of the  Series  B
     Preferred Stock and exercise of the Warrants by reason of the floating rate
     conversion  price  mechanism  or  other  adjustment   mechanisms  described
     therein,  or by  reason of any  stock  split,  stock  dividend  or  similar
     transaction  involving the Common Stock, in order to prevent  dilution,  in
     accordance with Rule 416 under the Securities Act. Pursuant to the terms of
     the Series B  Preferred  Stock,  if the Series B  Preferred  Stock had been
     actually  converted on March 10, 1998, the conversion price would have been
     $3.01 (the average of the six lowest  traded prices of the Common Stock for
     the 20 trading  days  immediately  preceding  such date) at which price the
     Series B  Preferred  Stock  would have been  converted  into  approximately
     1,661,130  shares of Common Stock. The Warrants are exercisable into 50,000
     shares of  Common  Stock at an  exercise  price  based on a premium  to the
     market  price on April 30,  1998.  Pursuant  to the  terms of the  Series B
     Preferred  Stock and the Warrants,  the shares of Series B Preferred  Stock
     are  convertible and the Warrants are exercisable by any holder only to the
     extent that the number of shares of Common Stock thereby issuable, together
     with the  number of shares of Common  Stock  owned by such  holder  and its
     affiliates (but not including shares of Common Stock underlying unconverted
     shares of Series B Preferred Stock or unexercised portions of the Warrants)
     would not exceed 4.9% of the then outstanding Common Stock as determined in
     accordance with Section 13(d) of the Exchange Act. Accordingly,  the number
     of  shares  of  Common  Stock  set  forth in the  table  for  this  Selling
     Stockholder  exceeds the number of shares of Common Stock that this Selling
     Stockholder  could  own  beneficially  at  any  given  time  through  their
     ownership of the Series B Preferred Stock and the Warrants. In that regard,
     beneficial  ownership of this Selling Stockholder set forth in the table is
     not determined in accordance with Rule 13d-3 under the Exchange Act.

(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.

</FN>
</TABLE>
                                      -14-

<PAGE>

                              PLAN OF DISTRIBUTION

         On February 10, 1998 the Company  entered  into a  Securities  Purchase
Agreement dated as of January 30, 1998 with one of the Selling Shareholders (the
"Purchase  Agreement"),  pursuant to which that  Selling  Shareholder  purchased
5,000 shares of Series B Preferred Stock that are convertible  into Common Stock
of the Company (the "Preferred Stock").  The Preferred Stock can be converted by
that Selling  Shareholder into shares of the Company's Common Stock starting 181
days  after  its  issuance  (or  sooner  under  certain  circumstances)  at  the
Conversion  Prices  described in the  Purchase  Agreement.  Concurrent  with the
purchase of the Preferred Stock, that Selling  Shareholder  received warrants to
purchase  additional Common Stock at an exercise price based on a premium to the
market price on April 30, 1998.  This  Registration  Statement has been filed by
the Company  pursuant to the  exercise of certain  registration  rights  granted
under the Purchase Agreement.  In addition,  the Company granted 5,000 shares of
Common Stock to Tsunami  Capital,  Inc. in  consideration  for their  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,  in  privately-negotiated
transactions,  through the  writing of options on the  Shares,  short sales 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  Shares  may  also  be  sold  pursuant  to Rule  144.  The  Selling
Shareholders  shall have the sole discretion not to accept any purchase offer or
make any sale of Shares if they know the purchase price to be  unsatisfactory at
any particular time.

         The  Selling  Shareholders  or  their  respective   pledgees,   donees,
transferees or other  successors in interest,  may also sell the Shares directly
to market makers acting as principle and/or  broker-dealers acting as agents for
themselves  or  their  customers.  Brokers  acting  as  agents  for the  Selling
Shareholders  will  receive  usual  and  customary   commissions  for  brokerage
transactions,  and market makers and block purchasers purchasing the Shares will
do so for their own account and at their own risk. It is possible that a Selling
Shareholder will attempt to sell shares of Common Stock in block transactions to
market  makers or other  purchasers  at a price per share which may be below the
then  market  price.  There can be no  assurance  that all or any of the  Shares
offered  hereby  will be issued to, or sold by,  the  Selling  Shareholders.  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 agreed to 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............................................................... 8
Use of Proceeds...........................................................14
Selling Shareholders......................................................14
Plan of Distribution..................................................... 15
Legal Matters............................................................ 15
Experts.................................................................. 15

         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.


                                3,405,000 Shares

                               SIGMA DESIGNS, INC.

                                  Common Stock

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

                                 March __, 1998




                                      -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.....          $ 3,074
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..........................................           99,574

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  Securities Purchase Agreement by and between
                           Sigma and the Buyers.
                  4.2      Form of Registration  Rights Agreement by and between
                           Sigma and the Initial Investors.
                  4.3      Form of Certificate of  Determination  of Preferences
                           of Series B Convertible Preferred Stock.
                  4.4      Form of Stock Purchase Warrant.
                  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 10th day of March 1998.

                                   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             March 10, 1998
- --------------------------------------      Executive Officer (Principal Executive Officer) 
     Thinh Q. Tran                           

/s/  Kit Tsui                                 Director of Finance, Chief Financial Officer,            March 10, 1998
- --------------------------------------     Secretary (Chief Financial and Accounting Officer)
     Kit Tsui                             
  
/s/  William J. Almon                                        Director                                  March 10, 1998
- --------------------------------------
     William J. Almon

/s/  William Wang                                             Director                                 March 10, 1998
- --------------------------------------
     William Wang

*By: /s/ Thinh Q. Tran                                                                                 March 10, 1998
- --------------------------------------
     Attorney-in-Fact

</TABLE>
                                      II-4


<PAGE>



                                  EXHIBIT INDEX

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

      4.1              Form  of  Securities  Purchase  Agreement  by and between
                       Sigma and the Buyers.

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

      4.3              Form of  Certificate of  Determination  of Preferences of
                       Series B Convertible Preferred Stock.

      4.4              Form of Stock Purchase Warrant.

      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


                          SECURITIES PURCHASE AGREEMENT

         SECURITIES PURCHASE AGREEMENT (this  "Agreement"),  dated as of January
30, 1998,  by and among Sigma  Designs,  Inc., a  California  corporation,  with
headquarters  located  at  46501  Landing  Parkway,  Fremont,  California  94538
("Company"),  and each of the purchasers set forth on the signature pages hereto
(the "Buyers").

         WHEREAS:

         A. The  Company  and the  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 (the "SEC") under the Securities Act
of 1933, as amended (the "1933 Act");

         B.  The  Company  has  authorized  a new  series  of  preferred  stock,
designated  as Series B Convertible  Preferred  Stock (the  "Preferred  Stock"),
having the rights,  preferences  and privileges set forth in the  Certificate of
Determination  of Rights,  Preferences,  Privileges  and  Restrictions  attached
hereto as Exhibit "A" (the "Certificate of Determination");

         C. The Preferred  Stock is convertible  into shares of common stock, no
par value per share,  of the Company  (the "Common  Stock"),  upon the terms and
subject  to the  limitations  and  conditions  set forth in the  Certificate  of
Determination;

         D. The Company has  authorized  the issuance to the Buyers of warrants,
in the form attached hereto as Exhibit "B", to purchase Fifty Thousand  (50,000)
shares of Common Stock (the "Warrants");

         E. The Buyers  desire to purchase and the Company  desires to issue and
sell,  upon  the  terms  and  conditions  set  forth in this  Agreement,  (i) an
aggregate of Five Thousand  (5,000) shares of Preferred Stock, and (ii) Warrants
to purchase Fifty  Thousand  (50,000)  shares of Common Stock,  for an aggregate
purchase price of Five Million Dollars ($5,000,000).

         F. Each Buyer wishes to purchase,  upon the terms and conditions stated
in this  Agreement,  the  number  of  shares of  Preferred  Stock and  number of
Warrants  as is set  forth  immediately  below its name on the  signature  pages
hereto;

         G.  Contemporaneous  with the execution and delivery of this Agreement,
the parties hereto are executing and delivering a Registration Rights Agreement,
in the form attached hereto 

                                        

<PAGE>


as Exhibit  "C" (the  "Registration  Rights  Agreement"),  pursuant to which the
Company has agreed to provide certain registration rights under the 1933 Act and
the  rules  and  regulations  promulgated   thereunder,   and  applicable  state
securities laws; and

         NOW  THEREFORE,  the Company and each of the Buyers  (severally and not
jointly) hereby agree as follows:

                       1.  PURCHASE AND SALE OF PREFERRED SHARES AND WARRANTS.

                           a.  Purchase of Preferred  Shares and  Warrants.  The
Company  shall issue and sell to each Buyer and each Buyer  severally  agrees to
purchase  from the Company  such  number of shares of Series B  Preferred  Stock
(collectively,  together with any Preferred Stock issued in replacement  thereof
or as a dividend  thereon or otherwise with respect  thereto in accordance  with
the terms  thereof,  the  "Preferred  Shares")  and number of  Warrants  for the
aggregate  purchase  price (the  "Purchase  Price") as is set forth  immediately
below such Buyer's name on the signature pages hereto.  The aggregate  number of
Preferred Shares to be issued at the Closing (as defined below) is Five Thousand
(5,000)  and the  aggregate  number of  Warrants  to be issued at the Closing is
Fifty Thousand (50,000), for an aggregate purchase price of Five Million Dollars
($5,000,000).

                           b. Form of Payment.  On the Closing  Date (as defined
below), (i) each Buyer shall pay the Purchase Price for the Preferred Shares and
the  Warrants to be issued and sold to it at the  Closing (as defined  below) by
wire transfer of immediately  available funds to the Company, in accordance with
the Company's  written wiring  instructions,  against  delivery of duly executed
certificates  representing  such number of Preferred  Shares and Warrants  which
such Buyer is purchasing  and (ii) the Company  shall deliver such  certificates
representing  such number of  Preferred  Shares and  Warrants  duly  executed on
behalf of the Company, to the Buyer, against delivery of such Purchase Price.

                           c.  Closing  Date.  Subject to the  satisfaction  (or
waiver) of the  conditions  thereto  set forth in Section 6 and Section 7 below,
the date and time of the  issuance  and  sale of the  Preferred  Shares  and the
Warrants  pursuant to this  Agreement  (the "Closing  Date") shall be 12:00 noon
Eastern  Standard  Time on February 9, 1998 or such other  mutually  agreed upon
time.  The  closing of the  transactions  contemplated  by this  Agreement  (the
"Closing")  shall  occur on the Closing  Date at the  offices of Wilson  Sonsini
Goodrich & Rosati,  Professional Corporation,  650 Page Mill Road, Palo Alto, CA
94304, or at such other location as may be agreed to be the parties.

                  2.  BUYERS'   REPRESENTATIONS   AND  WARRANTIES.   Each  Buyer
severally (and not jointly)  represents and warrants to the Company solely as to
such Buyer that:

                                       2
<PAGE>
                           a.  Investment  Purpose.  As of the date hereof,  the
Buyer is purchasing the Preferred Shares and the shares of Common Stock issuable
upon  conversion  thereof  (the  "Conversion  Shares")  and the Warrants and the
shares of Common Stock issuable upon exercise thereof (the "Warrant Shares" and,
collectively  with the  Preferred  Shares,  Warrants and  Conversion  Shares the
"Securities")  for its own  account for  investment  only and not with a present
view towards the public sale or distribution  thereof,  except pursuant to sales
registered or exempted from registration under the 1933 Act.

                           b.  Accredited  Investor  Status.  The  Buyer  is  an
"accredited investor" as that term is defined in Rule 501(a) of Regulation D.

                           c. Reliance on Exemptions. The Buyer understands that
the  Securities  are being  offered  and sold to it in  reliance  upon  specific
exemptions from the registration requirements of United States federal and state
securities  laws and that the Company is relying upon the truth and accuracy of,
and the Buyer's compliance with, the  representations,  warranties,  agreements,
acknowledgments  and  understandings  of the Buyer set forth  herein in order to
determine the  availability  of such exemptions and the eligibility of the Buyer
to acquire the Securities.

                           d. Information.  The Buyer and its advisors,  if any,
have been  furnished with all materials  relating to the business,  finances and
operations  of the Company and  materials  relating to the offer and sale of the
Securities which have been requested by the Buyer or its advisors. The Buyer and
its advisors, if any, have been afforded the opportunity to ask questions of the
Company and have received what the Buyer believes to be satisfactory  answers to
any  such  inquiries.  Neither  such  inquiries  nor  any  other  due  diligence
investigation conducted by Buyer or any of its advisors or representatives shall
modify,  amend or affect Buyer's right to rely on the Company's  representations
and  warranties  contained in Section 3 below.  The Buyer  understands  that its
investment in the Securities involves a significant degree of risk.

                           e. Governmental Review. The Buyer understands that no
United States  federal or state agency or any other  government or  governmental
agency  has  passed  upon or  made  any  recommendation  or  endorsement  of the
Securities.

                           f. Transfer or Resale. The Buyer understands that (i)
except as provided in the Registration Rights Agreement, the Securities have not
been and are not being  registered  under the 1933 Act or any  applicable  state
securities laws, and may not be transferred unless (a) subsequently  included in
an  effective  registration  statement  thereunder,  or (b) the Buyer shall have
delivered  to the  Company  an  opinion  of  counsel  (which  opinion  shall  be
reasonably  acceptable  to the Company) to the effect that the  Securities to be
sold or  transferred  may be sold or  transferred  pursuant to an exemption from
such  registration  or (c) sold or transferred to an "affiliate" of the Buyer or
(d) sold  pursuant  to Rule 144  promulgated  under the 1933 Act (or a

                                       3

<PAGE>

successor  rule);  (ii) any sale of such Securities made in reliance on Rule 144
may be made only in accordance with the terms of said Rule and further,  if said
Rule is not applicable,  any resale of such Securities  under  circumstances  in
which the seller (or the person  through whom the sale is made) may be deemed to
be an  underwriter  (as  that  term is  defined  in the 1933  Act)  may  require
compliance  with  some  other  exemption  under  the 1933 Act or the  rules  and
regulations of the SEC  thereunder;  and (iii) neither the Company nor any other
person is under any obligation to register such Securities under the 1933 Act or
any state  securities  laws or to comply  with the terms and  conditions  of any
exemption  thereunder  (in each case,  other than  pursuant to the  Registration
Rights  Agreement).  Notwithstanding  the foregoing or anything  else  contained
herein  to  the  contrary,  the  Securities  may be  pledged  as  collateral  in
connection with a bona fide margin account or other lending  arrangement so long
as the Buyer complies with the provisions of this Section 2(f).

                           g. Legends.  The Buyer understands that the Preferred
Shares  and the  Warrants  and,  until  such time as the  Conversion  Shares and
Warrant Shares have been  registered  under the 1933 Act as  contemplated by the
Registration  Rights Agreement,  the Conversion  Shares and Warrant Shares,  may
bear  a  restrictive   legend  in  substantially   the  following  form  (and  a
stop-transfer  order may be placed against transfer of the certificates for such
Securities):

                  "The securities  represented by this certificate have not been
                  registered  under the Securities Act of 1933, as amended.  The
                  securities  have been acquired for  investment  and may not be
                  sold,  transferred  or assigned in the absence of an effective
                  registration  statement for the securities  under said Act, or
                  an opinion of counsel, in form, substance and scope reasonably
                  acceptable to the Company,  that  registration is not required
                  under said Act or unless sold  pursuant to Rule 144 under said
                  Act."

                  The legend set forth  above  shall be removed  and the Company
shall issue a certificate without such legend to the holder of any Security upon
which  it  is  stamped,  if,  unless  otherwise  required  by  applicable  state
securities  laws,  (a) such Security is  registered  for sale under an effective
registration statement filed under the 1933 Act, or (b) such holder provides the
Company  with an opinion of counsel,  in form,  substance  and scope  reasonably
acceptable to the Company,  to the effect that a public sale or transfer of such
Security  may be made without  registration  under the 1933 Act and such sale or
transfer is effected or (c) such holder  provides  the Company  with  reasonable
assurances  that such  Security can be sold  pursuant to Rule 144 under the 1933
Act (or a successor  rule thereto)  without any  restriction as to the number of
Securities  acquired as of a particular date that can then be immediately  sold.
The Buyer  agrees  to sell all  Securities,  including  those  represented  by a
certificate(s)  from which the  legend  has been  removed,  in  compliance  with
applicable prospectus delivery requirements, if any.

                                       4

<PAGE>

                           h. Authorization; Enforcement. This Agreement and the
Registration  Rights Agreement have been duly and validly  authorized,  executed
and delivered on behalf of the Buyer and are valid and binding agreements of the
Buyer enforceable in accordance with their terms.

                           i.  Residency.   The  Buyer  is  a  resident  of  the
jurisdiction  set forth  immediately  below such Buyer's  name on the  signature
pages hereto.

                  3.  REPRESENTATIONS AND WARRANTIES OF THE COMPANY. The Company
represents and warrants to each Buyer that:

                           a.  Organization and  Qualification.  The Company and
each of its  Subsidiaries  (as defined  below),  if any, is a  corporation  duly
organized,  validly  existing  and  in  good  standing  under  the  laws  of the
jurisdiction  in  which  it is  incorporated,  with  full  power  and  authority
(corporate and other) to own, lease, use and operate its properties and to carry
on its business as and where now owned,  leased,  used,  operated and conducted.
Schedule  3(a) sets forth a list of all of the  Subsidiaries  of the Company and
the  jurisdiction  in which each is  incorporated.  The  Company and each of 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 where the failure to
be so qualified or in good standing  would not have a Material  Adverse  Effect.
"Material  Adverse  Effect" means any material  adverse  effect on the business,
operations, assets or financial condition of the Company or its Subsidiaries, if
any,  taken as a whole,  or on the  transactions  contemplated  hereby or by the
agreements  or   instruments   to  be  entered  into  in  connection   herewith.
"Subsidiaries" means any corporation or other organization, whether incorporated
or unincorporated, in which the Company owns, directly or indirectly, any equity
or other ownership interest.

                           b. Authorization; Enforcement. Except as disclosed on
Schedule 3(b), (i) The Company has all requisite  corporate  power and authority
to file and perform its obligations  under the Certificate of Determination  and
to enter into and perform this Agreement,  the Registration Rights Agreement and
the Warrants and to consummate the transactions  contemplated hereby and thereby
and to issue the  Securities,  in accordance  with the terms hereof and thereof,
(ii) the  execution  and delivery of this  Agreement,  the  Registration  Rights
Agreement  and the  Warrants by the Company  and the  consummation  by it of the
transactions contemplated hereby and thereby (including without limitation,  the
issuance  of the  Preferred  Shares  and  the  Warrants  and  the  issuance  and
reservation  for issuance of the Conversion  Shares and Warrant Shares  issuable
upon conversion or exercise  thereof) have been duly authorized by the Company's
Board of Directors and no further consent or authorization  of the Company,  its
Board of Directors,  or its  shareholders is required,  (iii) this Agreement has
been duly executed and delivered and the Certificate of  Determination  has been
duly filed by the Company,  and (iv) each of this Agreement and the  Certificate
of Determination constitutes,  and upon execution and delivery by the Company

                                       5
<PAGE>

of the Registration Rights Agreement and the Warrants,  each of such instruments
will  constitute,   a  legal,  valid  and  binding  obligation  of  the  Company
enforceable against the Company in accordance with its terms.

                           c.  Capitalization.  As  of  January  21,  1998,  the
authorized  capital stock of the Company  consists of (i)  20,000,000  shares of
Common Stock of which 11,646,075  shares are issued and  outstanding,  3,454,398
shares are reserved for issuance  pursuant to the Company's  stock option plans,
2,300,000  shares are reserved for issuance  pursuant to securities  (other than
the Preferred  Shares and the Warrants)  exercisable for, or convertible into or
exchangeable  for shares of Common Stock and 3,400,000  (2x currently  required)
shares are reserved for issuance upon  conversion  of the  Preferred  Shares and
exercise of the  Warrants  (subject  to  adjustment  pursuant  to the  Company's
covenant  set  forth in  Section  4(h)  below);  and (ii)  2,000,000  shares  of
preferred stock, 26,550 of which shares are issued and outstanding.  All of such
outstanding  shares  of  capital  stock  are,  or upon  issuance  will be,  duly
authorized,  validly issued, fully paid and nonassessable.  No shares of capital
stock of the  Company  are  subject to  preemptive  rights or any other  similar
rights of the  stockholders of the Company or any liens or encumbrances  imposed
through the actions or failure to act of the  Company.  Except as  disclosed  in
Schedule  3(c), as of the  effective  date of this  Agreement,  (i) there are no
outstanding  options,  warrants,  scrip,  rights to subscribe for, puts,  calls,
rights of first refusal, agreements, understandings, claims or other commitments
or rights of any  character  whatsoever  relating  to, or  securities  or rights
convertible  into or exchangeable for any shares of capital stock of the Company
or any of its  Subsidiaries,  or arrangements by which the Company or any of its
Subsidiaries is or may become bound to issue additional  shares of capital stock
of the Company or any of its  Subsidiaries,  and (ii) there are no agreements or
arrangements  under which the Company or any of its Subsidiaries is obligated to
register the sale of any of its or their  securities  under the 1933 Act (except
the Registration Rights Agreement) and (iii) there are no anti-dilution or price
adjustment provisions contained in any security issued by the Company (or in any
agreement  providing  rights to security  holders) that will be triggered by the
issuance of the Preferred Shares, the Warrants, the Conversion Shares or Warrant
Shares.  The Company has  furnished to the Buyer true and correct  copies of the
Company's  Articles of Incorporation as in effect on the date hereof  ("Articles
of Incorporation"),  the Company's By-laws, as in effect on the date hereof (the
"By-laws"),  and the terms of all securities convertible into or exercisable for
Common  Stock of the Company and the material  rights of the holders  thereof in
respect thereto.

                           d.  Issuance  of  Shares.   The   Preferred   Shares,
Conversion  Shares and Warrant Shares are duly  authorized and, upon issuance in
accordance with their respective terms of this Agreement (including the issuance
of the Conversion  Shares upon conversion of the Preferred  Shares in accordance
with the  Certificate of  Determination  and the Warrant Shares upon exercise of
the Warrants in accordance with the terms thereof) will be validly issued, fully
paid and non-assessable, and free from all taxes, liens and charges with respect
to the issue  thereof  and shall not be  subject to  preemptive  rights or other
similar rights of  stockholders of the Company.

                                       6
<PAGE>

The term  Conversion  Shares and Warrant  Shares  includes  the shares of Common
Stock  issuable  upon  conversion  of the  Preferred  Shares or  exercise of the
Warrants,  including without limitation,  such additional shares, if any, as are
issuable as a result of the events described in Section 2(c) of the Registration
Rights  Agreement.  The Company  understands  and  acknowledges  the potentially
dilutive  effect to the Common Stock upon the issuance of the Conversion  Shares
and Warrant  Shares upon  conversion  or  exercise  of the  Preferred  Shares or
Warrants.  The  Company  further  acknowledges  that  its  obligation  to  issue
Conversion  Shares and Warrant Shares upon conversion of the Preferred Shares or
exercise  of the  Warrants  in  accordance  with the terms of and subject to the
limitations set forth in this Agreement,  the Certificate of  Determination  and
the Warrants is absolute and  unconditional  regardless  of the dilutive  effect
that such issuance may have on the ownership  interests of other stockholders of
the Company.

                           e. No  Conflicts.  Except as  disclosed  in  Schedule
3(e), the execution, delivery and performance of this Agreement the Registration
Rights  Agreement  and the Warrants by the Company and the  consummation  by the
Company of the transactions contemplated hereby and thereby (including,  without
limitation,  the filing of the Certificate of Determination and the issuance and
reservation  for issuance of the Conversion  Shares and Warrant Shares) will not
(i) conflict  with or result in a violation of any  provision of the Articles of
Incorporation or By-laws or (ii) violate or conflict with, or result in a breach
of any  provision  of, or constitute a default (or an event which with notice or
lapse of time or both  could  become a  default)  under,  or give to others  any
rights  of  termination,   amendment,   acceleration  or  cancellation  of,  any
agreement,  indenture  or  instrument  to  which  the  Company  or  any  of  its
Subsidiaries is a party, or result in a violation of any law, rule,  regulation,
order,  judgment  or decree  (including  federal and state  securities  laws and
regulations)  applicable to the Company or any of its  Subsidiaries  or by which
any  property  or asset of the  Company or any of its  Subsidiaries  is bound or
affected  (except  for  such  conflicts,  defaults,  terminations,   amendments,
accelerations, cancellations and violations as would not, individually or in the
aggregate,  have a Material  Adverse  Effect).  Except as  disclosed in Schedule
3(e),  neither the Company nor any of its  Subsidiaries  is in  violation of its
Articles of Incorporation, By-laws or other organizational documents and neither
the Company nor any of its Subsidiaries is in default (and no event has occurred
which with  notice or lapse of time or both could put the  Company or any of its
Subsidiaries  in  default)  under,  and  neither  the  Company  nor  any  of its
Subsidiaries  has taken any action or failed to take any action  that would give
to others any rights of termination, amendment, acceleration or cancellation of,
any  agreement,  indenture  or  instrument  to which the  Company  or any of its
Subsidiaries is a party or by which any property or assets of the Company or any
of its Subsidiaries is bound or affected,  except for possible defaults as would
not,  individually  or in the aggregate,  have a Material  Adverse  Effect.  The
businesses of the Company and its Subsidiaries,  if any, are not being conducted
in violation of any law,  ordinance or  regulation of any  governmental  entity.
Except as specifically  contemplated by this Agreement and as required under the
1933 Act and any applicable  state  securities laws, the Company is not required
to  obtain  any  consent,  authorization  or order  of,  or make any  filing  or
registration  with, any court or  governmental  agency or any regulatory or self
regulatory  agency

                                       7
<PAGE>

in order for it to execute, deliver or perform any of its obligations under this
Agreement,  the Registration Rights Agreement or the Warrants in accordance with
the terms hereof or thereof. Except as disclosed in Schedule 3(e), all consents,
authorizations,  orders, filings and registrations which the Company is required
to obtain  pursuant to the preceding  sentence have been obtained or effected on
or prior to the date  hereof.  The  Company is not in  violation  of the listing
requirements of the Nasdaq  National Market  ("Nasdaq") and has not received any
notice  from Nasdaq  that the Common  Stock will be delisted by the Nasdaq.  The
Company and its  Subsidiaries  are unaware of any facts or  circumstances  which
might give rise to any of the foregoing.

                           f. SEC Documents, Financial Statements. Since January
31, 1995, the Company has timely filed all reports, schedules, forms, statements
and other  documents  required  to be filed by it with the SEC  pursuant  to the
reporting  requirements of the Exchange Act of 1934, as amended (the "1934 Act")
(all of the foregoing  filed prior to the date hereof and all exhibits  included
therein and financial statements and schedules thereto and documents (other than
exhibits)  incorporated  by reference  therein,  being  hereinafter  referred to
herein as the "SEC Documents"). The Company has delivered to each Buyer true and
complete copies of the SEC Documents,  except for such exhibits and incorporated
documents.  As of their  respective  dates,  the SEC  Documents  complied in all
material  respects  with the  requirements  of the 1934  Act and the  rules  and
regulations of the SEC promulgated  thereunder  applicable to the SEC Documents,
and  none of the SEC  Documents,  at the  time  they  were  filed  with the SEC,
contained any untrue statement of a material fact or omitted to state a material
fact required to be stated  therein or necessary in order to make the statements
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading.  As of their  respective  dates,  the  financial  statements  of the
Company  included  in the SEC  Documents  complied  as to  form in all  material
respects with  applicable  accounting  requirements  and the published rules and
regulations of the SEC with respect thereto. Such financial statements have been
prepared in accordance with generally accepted accounting  principles  ("GAAP"),
consistently  applied,  during  the  periods  involved  (except  (i)  as  may be
otherwise  indicated in such financial  statements or the notes thereto, or (ii)
in the case of unaudited interim statements,  to the extent they may not include
footnotes or may be condensed or summary  statements)  and fairly present in all
material  respects the  consolidated  financial  position of the Company and its
consolidated  Subsidiaries as of the dates thereof and the consolidated  results
of their  operations and cash flows for the periods then ended (subject,  in the
case of unaudited statements,  to normal year-end audit adjustments).  Except as
set  forth  in the  financial  statements  of the  Company  included  in the SEC
Documents, the Company has no liabilities,  contingent or otherwise,  other than
(i)  liabilities  incurred  in the  ordinary  course of business  subsequent  to
January 31, 1997 and (ii) obligations  under contracts and commitments  incurred
in the ordinary  course of business and not required  under  generally  accepted
accounting  principles  to be reflected  in such  financial  statements,  which,
individually or in the aggregate, are not material to the financial condition or
operating results of the Company.

                                        8
<PAGE>

                           g. Absence of Certain Changes. Except as disclosed in
Schedule  3(g),  since  January  31,  1997,  there  has  been no  change  and no
development which would have a Material Adverse Effect.

                           h. Absence of Litigation.  There is no action,  suit,
claim,  proceeding,  inquiry or  investigation  before or by any  court,  public
board,  government agency,  self-regulatory  organization or body pending or, to
the knowledge of the Company or any of its Subsidiaries,  threatened  against or
affecting  the  Company  or any of its  Subsidiaries  that could  reasonably  be
expected to have a Material  Adverse  Effect.  Schedule 3(h) contains a complete
list and summary description of any pending or threatened  proceeding against or
affecting the Company or any of its  Subsidiaries,  without regard to whether it
would have a Material Adverse Effect.

                           i. Patents,  Copyrights, etc. The Company and each of
its Subsidiaries  owns or possesses the requisite  licenses or rights to use all
patents, patent rights, inventions, know-how, trade secrets, trademarks, service
marks,  service  names,  trade names and  copyrights  ("Intellectual  Property")
necessary to enable it to conduct its business as now operated  (and,  except as
set forth in Schedule  3(i) hereof,  to the  Company's  knowledge,  as presently
contemplated  to be operated in the future);  there is no claim or action by any
person  pertaining  to, or proceeding  pending,  or to the  Company's  knowledge
threatened  which  challenges  the right of the Company or of a Subsidiary  with
respect to any  Intellectual  Property  necessary  to enable it to  conduct  its
business as now operated (and,  except as set forth in Schedule 3(i) hereof,  to
the  Company's  knowledge,  as  presently  contemplated  to be  operated  in the
future); to the Company's knowledge, the Company's or its Subsidiaries,  current
and  intended   products,   services  and  processes  do  not  infringe  on  any
Intellectual  Property or other  rights  held by any person;  and the Company is
unaware  of any  facts or  circumstances  which  might  give  rise to any of the
foregoing.  The  Company  and each of its  Subsidiaries  have  taken  reasonable
security  measures to protect the  secrecy,  confidentiality  and value of their
Intellectual Property.

                           j.       [Intentionally Omitted]

                           k. Tax Status.  Except as set forth on Schedule 3(k),
the Company and each of its Subsidiaries has made or filed all federal and state
income and all other tax  returns,  reports  and  declarations  required  by any
jurisdiction  to which it is subject  (unless  and only to the  extent  that the
Company  and each of its  Subsidiaries  has set  aside on its  books  provisions
reasonably  adequate for the payment of all unpaid and unreported taxes) and has
paid all taxes and other governmental  assessments and charges that are material
in  amount,  shown  or  determined  to be  due  on  such  returns,  reports  and
declarations,  except  those being  contested in good faith and has set aside on
its  books  provisions  reasonably  adequate  for the  payment  of all taxes for
periods subsequent to the periods to which such returns, reports or declarations
apply. There are no unpaid taxes in any material amount claimed to be due by the
taxing authority of any jurisdiction,  and the Company knows of no basis for any
such claim.

                                       9
<PAGE>

                           l.  Certain  Transactions.  Except  as set  forth  on
Schedule  3(l) and except for arm's  length  transactions  pursuant to which the
Company or any of its  Subsidiaries  makes  payments in the  ordinary  course of
business  upon  terms  no  less  favorable  than  the  Company  or  any  of  its
Subsidiaries  could obtain from third  parties and other than the grant of stock
options  disclosed  on  Schedule  3(c),  none  of the  officers,  directors,  or
employees  of the  Company  is  presently  a party to any  transaction  with the
Company  or any of its  Subsidiaries  (other  than for  services  as  employees,
officers and directors),  including any contract, agreement or other arrangement
providing for the furnishing of services to or by,  providing for rental of real
or personal property to or from, or otherwise  requiring payments to or from any
officer,  director or such  employee or, to the  knowledge  of the Company,  any
corporation,  partnership, trust or other entity in which any officer, director,
or any such  employee  has a  substantial  interest or is an officer,  director,
trustee or partner.

                           m. Disclosure. All written information relating to or
concerning  the Company or any of its  Subsidiaries  set forth in this Agreement
and  provided to the Buyers  pursuant to Section  2(d) hereof and  otherwise  in
connection with the transactions  contemplated hereby is true and correct in all
material  respects  and the Company has not omitted to state any  material  fact
necessary in order to make the  statements  made herein or therein,  in light of
the  circumstances  under  which they were  made,  not  misleading.  No event or
circumstance  has  occurred or exists with  respect to the Company or any of its
Subsidiaries  or its or their  business,  properties,  prospects,  operations or
financial conditions, which, under applicable law, rule or regulation,  requires
public  disclosure  or  announcement  by the  Company  but which has not been so
publicly  announced or disclosed  (assuming for this purposes that the Company's
reports  filed  under  the 1934 Act are  being  incorporated  into an  effective
registration statement filed by the Company under the 1933 Act).

                           n.  Acknowledgment   Regarding  Buyers'  Purchase  of
Securities.  The  Company  acknowledges  and  agrees  that the Buyers are acting
solely in the capacity of arm's length purchasers with respect to this Agreement
and the transactions  contemplated hereby. The Company further acknowledges that
no Buyer is acting as a financial advisor or fiduciary of the Company (or in any
similar   capacity)  with  respect  to  this  Agreement  and  the   transactions
contemplated hereby and any advice given by any Buyer or any of their respective
representatives or agents in connection with this Agreement and the transactions
contemplated  hereby  is  merely  incidental  to  the  Buyers,  purchase  of the
Securities.  The Company  further  represents  to each Buyer that the  Company's
decision to enter into this  Agreement has been based solely on the  independent
evaluation of the Company and its representatives.

                           o. No Integrated  Offering.  Neither the Company, nor
any of its  affiliates,  nor any  person  acting  on its or  their  behalf,  has
directly or indirectly made any offers or sales in any security or solicited any
offers to buy any security under  circumstances that would require  registration
under the 1933 Act of the issuance of the Securities to the Buyers. The

                                       10
<PAGE>

issuance of the  Securities to the Buyers will not be integrated  with any other
issuance of the Company's  securities  (past,  current or future) which requires
stockholder approval under the rules of The Nasdaq Stock Market.

                           p. No Brokers.  The Company has taken no action which
would give rise to any claim by any person for brokerage  commissions,  finder's
fees  or  similar  payments  relating  to  this  Agreement  or the  transactions
contemplated hereby, except for dealings with Tsunami Capital, whose commissions
and fees will be paid for by the Company.

                           q. Permits;  Compliance.  The Company and each of its
Subsidiaries  is  in  possession  of  all  franchises,  grants,  authorizations,
licenses, permits, easements,  variances,  exemptions,  consents,  certificates,
approvals and orders  necessary to own,  lease and operate its properties and to
carry on its business as it is now being  conducted  except where the failure to
possess would not have a Material  Adverse  Effect  (collectively,  the "Company
Permits"),  and there is no action  pending or, to the knowledge of the Company,
threatened  regarding  suspension or cancellation of any of the Company Permits.
Neither the  Company nor any of its  Subsidiaries  is in  conflict  with,  or in
default  or  violation  of,  any of the  Company  Permits,  except  for any such
conflicts, defaults or violations which, individually or in the aggregate, would
not reasonably be expected to have a Material Adverse Effect.  Since January 31,
1997,  neither  the  Company  nor  any  of its  Subsidiaries  has  received  any
notification  with  respect to possible  conflicts,  defaults or  violations  of
applicable laws, except for notices relating to possible conflicts,  defaults or
violations,  which  conflicts,  defaults or violations would not have a Material
Adverse Effect.

                           r. Environmental Matters.

                                    (i)  Except as set forth in  Schedule  3(r),
there are, to the Company's knowledge, with respect to the Company or any of its
Subsidiaries or any predecessor of the Company, no past or present violations of
Environmental  Laws  (as  defined  below),  releases  of any  material  into the
environment, actions, activities, circumstances,  conditions, events, incidents,
or contractual  obligations  which may give rise to any common law environmental
liability  or any  liability  under the  Comprehensive  Environmental  Response,
Compensation  and  Liability  Act of 1980 or similar  federal,  state,  local or
foreign  laws and neither the Company nor any of its  Subsidiaries  has received
any notice with respect to any of the  foregoing,  nor is any action pending or,
to the Company's knowledge,  threatened in connection with any of the foregoing.
The term  "Environmental  Laws" means all federal,  state, local or foreign laws
relating  to  pollution  or  protection  of  human  health  or  the  environment
(including,  without limitation,  ambient air, surface water, groundwater,  land
surface or subsurface strata),  including,  without limitation, laws relating to
emissions,  discharges, releases or threatened releases of chemicals, pollutants
contaminants,   or  toxic  or  hazardous  substances  or  wastes  (collectively,
"Hazardous  Materials")  into the  environment,  or  otherwise  relating  to the
manufacture,   processing,  distribution,  use,  treatment,  storage,  disposal,
transport or handling of  Hazardous

                                       11
<PAGE>

Materials,  as well as all  authorizations,  codes,  decrees,  demands or demand
letters,  injunctions,  judgments,  licenses, notices or notice letters, orders,
permits,  plans  or  regulations  issued,   entered,   promulgated  or  approved
thereunder.

                                    (ii)  Other  than  those  that  are or  were
stored,  used or disposed of in compliance with applicable law, to the Company's
knowledge,  no Hazardous  Materials  are contained on or about any real property
currently owned, leased or used by the Company or any of its Subsidiaries,  and,
to the Company's knowledge, no Hazardous Materials were released on or about any
real  property  previously  owned,  leased or used by the  Company or any of its
Subsidiaries  during the period the  property  was owned,  leased or used by the
Company or any of its Subsidiaries, except in the normal course of the Company's
or any of its Subsidiaries' business.

                                    (iii) Except as set forth in Schedule  3(r),
to the Company's  knowledge,  there are no underground storage tanks on or under
any  real  property  owned,  leased  or  used  by  the  Company  or  any  of its
Subsidiaries that are not in compliance with applicable law.

                           s.   Title  to   Property.   The   Company   and  its
Subsidiaries  have good and marketable  title in fee simple to all real property
and good and  marketable  title to all personal  property owned by them which is
material to the business of the Company and its Subsidiaries,  in each case free
and clear of all liens, encumbrances and defects except such as are described in
Schedule  3(s) or such as would not have a  Material  Adverse  Effect.  Any real
property and facilities held under lease by the Company and its Subsidiaries are
held by them under valid, subsisting and enforceable leases with such exceptions
as would not have a Material Adverse Effect.

                           t.   Insurance.   The   Company   and   each  of  its
Subsidiaries  are  insured by insurers of  recognized  financial  responsibility
against such losses and risks and in such amounts as  management  of the Company
believes to be prudent and customary in the  businesses in which the Company and
its  Subsidiaries  are engaged.  Neither the Company nor any such Subsidiary has
any reason to believe that it will not be able to renew its  existing  insurance
coverage as and when such coverage  expires or to obtain  similar  coverage from
similar  insurers as may be  necessary  to continue  its business at a cost that
would not have a Material Adverse Effect.

                           u. Internal Accounting Controls. The Company and each
of  its  Subsidiaries   maintain  a  system  of  internal   accounting  controls
sufficient,  int he judgment of the  Company's  board of  directors,  to provide
reasonable  assurance  that (i)  transactions  are executed in  accordance  with
management's general or specific 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

                                       12
<PAGE>

accountability  for assets is compared  with the existing  assets at  reasonable
intervals and appropriate action is taken with respect to any differences.

                       4.  COVENANTS.

                           a. Best  Efforts.  The  parties  shall use their best
efforts to satisfy timely each of the conditions described in Section 6 and 7 of
this Agreement.

                           b. Form D; Blue Sky Laws.  The Company agrees to file
a Form D with respect to the  Securities as required  under  Regulation D and to
provide a copy thereof to each Buyer  promptly  after such  filing.  The Company
shall,  on or before the Closing  Date,  take such  action as the Company  shall
reasonably  determine  is necessary  to qualify the  Securities  for sale to the
Buyers at the applicable  closing  pursuant to this Agreement  under  applicable
securities  or "blue sky" laws of the states of the United  States (or to obtain
an exemption from such  qualification),  and shall provide  evidence of any such
action so taken to each Buyer on or prior to the Closing Date.

                           c. Reporting Status; Eligibility to Use Form S-3. The
Company's  Common Stock is  registered  under  Section 12(g) of the 1934 Act. So
long as any Buyer  beneficially  owns any of the  Securities,  the Company shall
timely file all reports  required to be filed with the SEC  pursuant to the 1934
Act, and the Company  shall not  terminate  its status as an issuer  required to
file  reports  under  the  1934  Act  even  if the  1934  Act or the  rules  and
regulations  thereunder  would permit such  termination.  The Company  currently
meets,  and will take all necessary  action to continue to meet, the "registrant
eligibility" requirements set forth in the general instructions to Form S-3.

                           d.  Use  of  Proceeds.  The  Company  shall  use  the
proceeds  from the sale of the  Preferred  Shares and the Warrants in the manner
set forth in Schedule 4(d) attached hereto and made a part hereof and shall not,
directly or  indirectly,  use such proceeds for any loan to or investment in any
other corporation, partnership, enterprise or other person (except in connection
with its currently existing direct or indirect Subsidiaries).

                           e. Additional Equity Capital; Right of First Refusal.
Subject to the exceptions  described  below,  the Company will not,  without the
prior  written  consent of a  majority-in-interest  of the Buyers,  negotiate or
contract with any party to obtain  additional  equity financing  (including debt
financing with an equity  component),  during the period (the "Lock-up  Period")
beginning  on the  Closing  Date and  ending  on the  later  of (i) one  hundred
thirty-five  (135) days from the Closing Date and (ii) forty-five (45) days from
the date the  Registration  Statement  (as  defined in the  Registration  Rights
Agreement) is declared  effective  (plus any days for which sales cannot be made
thereunder). In addition, subject to the exceptions described below, the Company
will not conduct any equity financing  (including debt with an equity component)
("Future

                                       13
<PAGE>

Offerings")  during  the period  beginning  on the  Closing  Date and ending one
hundred eighty (180) days after the end of the Lock-up  Period,  unless it shall
have first delivered to each Buyer, at least fifteen (15) business days prior to
the closing of such Future  Offering,  written  notice  describing  the proposed
Future  Offering,  including the material terms and  conditions  thereof and the
proposed  definitive  documentation to be entered into in connection  therewith,
and  providing  each Buyer an option  during  the ten (10) day period  following
delivery of such notice to purchase  its pro rata share (based on the ratio that
the number of Preferred  Shares purchased by it hereunder bears to the aggregate
number of Preferred Shares purchased  hereunder) of the securities being offered
in the Future Offering on the same terms as contemplated by such Future Offering
(the limitations  referred to in this sentence are  collectively  referred to as
the  "Capital  Raising  Limitations").  In the  event  the  material  terms  and
conditions  of a proposed  Future  Offering  are  amended in any  respect  after
delivery of the notice to the Buyers  concerning such proposed Future  Offering,
the Company  shall  deliver a new notice to each Buyer  describing  the material
amended  terms and  conditions  of the proposed  Future  Offering and each Buyer
thereafter  shall  have an  option  during  the ten  (10) day  period  following
delivery of such new notice to purchase  its pro rata share  (based on the ratio
that the aggregate principal amount of the Debentures  purchased by it hereunder
bears to the aggregate principal amount of Debentures purchased hereunder).  The
Capital Raising  Limitations  shall not apply to any  transaction  involving (i)
issuances  of  securities  in a firm  commitment  underwritten  public  offering
(excluding  a  continuous  offering  pursuant to Rule 415 under the 1933 Act) or
(ii) issuances of securities as  consideration  for a merger,  consolidation  or
sale of assets, or in connection with any strategic partnership or joint venture
(the primary purpose of which is not to raise equity capital),  or in connection
with the  disposition or  acquisition  of a business,  product or license by the
Company.  The  Capital  Raising  Limitations  also  shall  not  apply to (i) the
issuance of securities  upon  exercise or  conversion of the Company's  options,
warrants or other convertible securities outstanding as of the date hereof or to
the grant of  additional  options or  warrants,  or the  issuance of  additional
securities  under any Company stock option,  restricted stock option or employee
stock  purchase  plan  approved  by a majority  of the  Company's  disinterested
directors  or as incentive  related  distributions  to  employees  approved by a
majority  of  the  Company's  disinterested  directors,  (ii)  the  issuance  of
securities  in  connection  with  equipment  financing  or (iii) the issuance of
securities in connection with any commercial bank financing.

                           f.  Expenses.  The Company shall  reimburse Rose Glen
Capital  Management,  L.P. ("RGC") for all expenses incurred by it in connection
with the negotiation,  preparation,  execution, delivery and performance of this
Agreement  and the other  agreements  to be  executed  in  connection  herewith,
including,  without  limitation,  attorneys' and consultants' fees and expenses.
The Company's  obligation to reimburse  RGC's  expenses  under this Section 4(f)
shall be limited to Thirty-Five Thousand Dollars ($35,000).

                           g. Financial Information.  The Company agrees to send
the  following  reports to each Buyer until such Buyer  transfers,  assigns,  or
sells all of the Securities:  (i) within

                                       14
<PAGE>

ten (10) days after the filing with the SEC, a copy of its Annual Report on Form
10-K,  its Quarterly  Reports on Form 10-Q and any Current  Reports on Form 8-K;
(ii) within two (2) days after release,  copies of all press releases  issued by
the Company or any of its  Subsidiaries;  and (iii)  contemporaneously  with the
making  available or giving to the  stockholders  of the Company,  copies of any
notices  or other  information  the  Company  makes  available  or gives to such
stockholders.

                           h.  Reservation  of Shares.  The Company shall at all
times have  authorized,  and reserved for the purpose of issuance,  a sufficient
number of shares of Common Stock to provide for the full  conversion or exercise
of the outstanding  Preferred Shares and Warrants and issuance of the Conversion
Shares and Warrant Shares in connection therewith (based on the Conversion Price
of the Preferred Shares or Exercise Price of the Warrants in effect from time to
time).  The  Company  shall not  reduce  the  number  of shares of Common  Stock
reserved for issuance upon  conversion  of Preferred  Shares and exercise of the
Warrants  without  the consent of each  Buyer.  The  Company  shall use its best
efforts  at all times to  maintain  the  number  of  shares  of Common  Stock so
reserved  for  issuance  at no less than two (2) times the  number  that is then
actually  issuable upon full conversion of the Preferred  Shares and exercise of
the Warrants (based on the Conversion  Price of the Preferred Shares or Exercise
Price of the Warrants in effect from time to time). If at any time the number of
shares of Common Stock  authorized and reserved for issuance is below the number
of Conversion  Shares and Warrant Shares issued and issuable upon  conversion of
the Preferred Shares and exercise of the Warrants (based on the Conversion Price
of the Preferred  Shares or Exercise price of the Warrants then in effect),  the
Company will  promptly  take all  corporate  action  necessary to authorize  and
reserve a sufficient number of shares, including, without limitation,  calling a
special  meeting of  shareholders  to  authorize  additional  shares to meet the
Company's  obligations  under this Section 4(h), in the case of an  insufficient
number of authorized  shares,  and using its best efforts to obtain  shareholder
approval of an increase in such authorized number of shares.

                           i.  Listing.  The Company shall  promptly  secure the
listing  of  the  Conversion  Shares  and  Warrant  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  Conversion  Shares and Warrant Shares from time to time issuable
upon conversion of the Preferred Shares or exercise of the Warrants. The Company
will obtain and  maintain the listing and trading of its Common Stock on Nasdaq,
the Nasdaq  SmallCap  Market  ("Nasdaq  SmallCap"),  the New York Stock Exchange
("NYSE"),  or the  American  Stock  Exchange  ("AMEX")  and will  comply  in all
respects with the Company's  reporting,  filing and other  obligations under the
bylaws or rules of the National  Association of Securities  Dealers ("NASD") and
such exchanges, as applicable.  The Company shall promptly provide to each Buyer
copies of any notices it receives from Nasdaq or any other  securities  exchange
or other

                                       15
<PAGE>

securities  market on which  the  Common  Stock is then  listed,  regarding  the
continued  eligibility  of the Common  Stock for  listing on such  exchanges  or
markets.

                           j.   Corporate   Existence.   So   long  as  a  Buyer
beneficially  owns any Preferred Shares or Warrants,  the Company shall maintain
its  corporate  existence  and  shall not sell all or  substantially  all of the
Company's  assets,  except in the event of a merger or  consolidation or sale of
all or  substantially  all of the  Company's  assets,  where  the  surviving  or
successor  entity in such  transaction  (i)  assumes the  Company's  obligations
hereunder and under the  agreements and  instruments  entered into in connection
herewith and (ii) is a publicly traded  corporation whose Common Stock is listed
for trading on Nasdaq, Nasdaq SmallCap, NYSE or AMEX.

                           k. No  Integration.  The Company will not conduct any
future  offering  that will be  integrated  with the issuance of the  Securities
solely for purposes of Rule 4460(i) of the Nasdaq Stock Market.

                           l.  Solvency.  The  Company  (both  before  and after
giving effect to the  transactions  contemplated  by this  Agreement) is solvent
(i.e.,  its assets (as defined in accordance with GAAP) have a fair market value
in  excess  of the  amount  required  to pay  its  liabilities  (as  defined  in
accordance  with  GAAP)  on its  existing  debts  as they  become  absolute  and
matured). The Company did not receive a qualified opinion from its auditors with
respect to its most recent  fiscal year end and does not  anticipate  or know of
any basis upon which its auditors might issue a qualified  opinion in respect of
its current fiscal year.

                  5.  TRANSFER  AGENT  INSTRUCTIONS.  The  Company  shall  issue
irrevocable instructions to its transfer agent to issue certificates, registered
in the name of each Buyer or its nominee,  for the Conversion Shares and Warrant
Shares in such  amounts  as  specified  from  time to time by each  Buyer to the
Company upon  conversion of the Preferred  Shares or exercise of the Warrants in
accordance   with  the  terms   therewith  (the   "Irrevocable   Transfer  Agent
Instructions").  Prior to  registration  of the  Conversion  Shares and  Warrant
Shares  under the 1933 Act,  all such  certificates  shall bear the  restrictive
legend specified in Section 2(g) of this Agreement. The Company warrants that no
instruction other than the Irrevocable  Transfer Agent Instructions  referred to
in this Section 5, and stop transfer instructions to give effect to Section 2(f)
hereof  (in the case of the  Conversion  Shares  and  Warrant  Shares,  prior to
registration  of the  Conversion  Shares and Warrant Shares under the 1933 Act),
will be given by the Company to its transfer agent and that the Securities shall
otherwise be freely  transferable on the books and records of the Company as and
to the extent provided in this Agreement and the Registration  Rights Agreement.
Nothing in this  Section  shall  affect in any way the Buyer's  obligations  and
agreement  set  forth in  Section  2(g)  hereof to  comply  with all  applicable
prospectus delivery  requirements,  if any, upon resale of the Securities.  If a
Buyer provides the Company with an opinion of counsel,  reasonably  satisfactory
to the Company in form,  substance and scope,  that

                                       16
<PAGE>

registration  of a resale by such Buyer of any of the Securities is not required
under the 1933 Act, the Company shall permit the  transfer,  and, in the case of
the Conversion  Shares and Warrant Shares,  promptly instruct its transfer agent
to issue  one or more  certificates  in such name and in such  denominations  as
specified  by such Buyer.  The Company  acknowledges  that a breach by it of its
obligations  hereunder will cause  irreparable harm to the Buyers,  by vitiating
the intent and purpose of the transaction contemplated hereby. Accordingly,  the
Company  acknowledges  that the  remedy at law for a breach  of its  obligations
under this Section 5 will be inadequate and agrees,  in the event of a breach or
threatened  breach by the Company of the  provisions of this  Section,  that the
Buyers shall be entitled,  in addition to all other  available  remedies,  to an
injunction restraining any breach and requiring immediate transfer,  without the
necessity of showing  economic loss and without any bond or other security being
required.

                  6.  CONDITIONS  TO  THE  COMPANY'S  OBLIGATION  TO  SELL.  The
obligation of the Company  hereunder to issue and sell the Preferred  Shares and
Warrants to a Buyer at the Closing is subject to the satisfaction,  at or before
the Closing Date of each of the  following  conditions  thereto,  provided  that
these  conditions  are for the  Company's  sole benefit and may be waived by the
Company at any time in its sole discretion:

                           a. The  applicable  Buyer  shall have  executed  this
Agreement and the Registration  Rights Agreement,  and delivered the same to the
Company.

                           b. The  applicable  Buyer  shall have  delivered  the
Purchase Price in accordance with Section 1(b) above.

                           c. The Certificate of  Determination  shall have been
accepted for filing with the Secretary of State of the State of California.

                           d.  The   representations   and   warranties  of  the
applicable  Buyer shall be true and correct in all  material  respects as of the
date when made and as of the Closing  Date as though  made at that time  (except
for  representations  and warranties that speak as of a specific date),  and the
applicable  Buyer shall have  performed,  satisfied and complied in all material
respects  with  the  covenants,  agreements  and  conditions  required  by  this
Agreement to be performed, satisfied or complied with by the applicable Buyer at
or prior to the Closing Date.

                           e.  No   litigation,   statute,   rule,   regulation,
executive order, decree, ruling or injunction shall have been enacted,  entered,
promulgated  or  endorsed  by or in  any  court  or  governmental  authority  of
competent jurisdiction or any self-regulatory organization having authority over
the matters  contemplated  hereby which prohibits the consummation of any of the
transactions contemplated by this Agreement.

                                       17
<PAGE>

                  7.  CONDITIONS  TO EACH BUYER'S  OBLIGATION  TO PURCHASE.  The
obligation of each Buyer hereunder to purchase the Preferred Shares and Warrants
at the Closing is subject to the satisfaction,  at or before the Closing Date of
each of the following  conditions,  provided that these  conditions are for such
Buyer's  sole  benefit  and may be waived by such  Buyer at any time in its sole
discretion:

                           a. The Company shall have executed this Agreement and
the Registration Rights Agreement, and delivered the same to the Buyer.

                           b. The  Company  shall have  delivered  to such Buyer
duly executed  certificates  (in such  denominations as the Buyer shall request)
representing  the Preferred  Shares and Warrants in accordance with Section 1(b)
above.

                           c. The Certificate of  Determination  shall have been
accepted for filing with the Secretary of State of the State of California,  and
a copy thereof certified by such Secretary of State shall have been delivered to
such Buyer.

                           d. The Irrevocable  Transfer Agent  Instructions,  in
form and substance satisfactory to a  majority-in-interest  of the Buyers, shall
have been  delivered to and  acknowledged  in writing by the Company's  Transfer
Agent.

                           e. The  representations and warranties of the Company
shall be true and correct in all material  respects as of the date when made and
as of the Closing Date as though made at such time  (except for  representations
and  warranties  that speak as of a specific  date) and the  Company  shall have
performed,  satisfied and complied in all material  respects with the covenants,
agreements and conditions required by this Agreement to be performed,  satisfied
or complied with by the Company at or prior to the Closing Date. The Buyer shall
have received a certificate  or  certificates,  executed by the chief  executive
officer of the Company,  dated as of the Closing Date,  to the foregoing  effect
and as to such  other  matters  as may be  reasonably  requested  by such  Buyer
including,  but not  limited  to  certificates  with  respect  to the  Company's
Articles of Incorporation,  Bylaws and Board of Directors'  resolutions relating
to the transactions contemplated hereby.

                           f.  No   litigation,   statute,   rule,   regulation,
executive order, decree, ruling or injunction shall have been enacted,  entered,
promulgated  or  endorsed  by or in  any  court  or  governmental  authority  of
competent jurisdiction or any self-regulatory organization having authority over
the matters  contemplated  hereby which prohibits the consummation of any of the
transactions contemplated by this Agreement.

                                       18
<PAGE>

                           g. The  Conversion  Shares and Warrant  Shares  shall
have been  authorized for quotation on Nasdaq and trading in the Common Stock on
Nasdaq shall not have been suspended by the SEC or Nasdaq.

                           h. The Buyer  shall have  received  an opinion of the
Company's  counsel,  dated as of the Closing Date, in form,  scope and substance
reasonably  satisfactory  to the  Buyer  and in  substantially  the same form as
Exhibit "D" attached hereto.

                           i.  The   Buyer   shall   have   received   officers'
certificates  in form and  substance  satisfactory  to the Buyer dated as of the
Closing Date.

                           j.  Since the date of  execution  of this  Agreement,
there has been no change and no development  which would have a Material Adverse
Effect.

                       8.  GOVERNING LAW; MISCELLANEOUS.

                           a. Governing Law. This Agreement shall be governed by
and interpreted in accordance  with the laws of the State of California  without
regard to the principles of conflict of laws.

                           b.  Counterparts;   Signatures  by  Facsimile.   This
Agreement  may be  executed in two or more  counterparts,  all of which shall be
considered  one  and  the  same  agreement  and  shall  become   effective  when
counterparts  have been signed by each party and  delivered  to the other party.
This  Agreement,  once executed by a party,  may be delivered to the other party
hereto  by  facsimile  transmission  of a copy of  this  Agreement  bearing  the
signature of the party so delivering this Agreement.

                           c.  Headings.  The headings of this Agreement are for
convenience   of   reference   and  shall  not  form  part  of,  or  affect  the
interpretation of, this Agreement.

                           d.  Severability.  If any provision of this Agreement
shall be  invalid or  unenforceable  in any  jurisdiction,  such  invalidity  or
unenforceability  shall  not  affect  the  validity  or  enforceability  of  the
remainder of this Agreement or the validity or  enforceability of this Agreement
in any other jurisdiction.

                           e. Entire Agreement;  Amendments.  This Agreement and
the  instruments  referenced  herein  contain  the entire  understanding  of the
parties with respect to the matters  covered  herein and therein and,  except as
specifically  set forth  herein or  therein,  neither  the Company nor the Buyer
makes any representation, warranty, covenant or undertaking with respect to such
matters.  No provision of this  Agreement may be waived or amended other than by
an instrument in writing signed by the party to be charged with enforcement.

                                       19
<PAGE>


                           f. Notices.  Any notices  required or permitted to be
given under the terms of this Agreement shall be sent by certified or registered
mail (return receipt requested) or delivered personally or by courier (including
a recognized  overnight delivery service) or by facsimile and shall be effective
five days after being  placed in the mail,  if mailed by regular U.S.  mail,  or
upon  receipt,  if delivered  personally  or by courier  (including a recognized
overnight delivery service) or by facsimile,  in each case addressed to a party.
The addresses for such communications shall be:

             If to the Company:

                      Sigma Designs, Inc.
                      46501 Landing Parkway
                      Fremont, California  94538
                      Attention:  Chief Executive Officer
                      Facsimile: (510) 770-2640

             With copy to:

                      Wilson Sonsini Goodrich & Rosati, Professional Corporation
                      650 Page Mill Road
                      Palo Alto, California 94304
                      Attention:       David Segre
                                       Stephen Diamond

                  If to a Buyer: To the address set forth immediately below such
Buyer's name on the signature pages hereto.

                  Each  party  shall  provide  notice to the other  party of any
change in address.

                           g.  Successors and Assigns.  This Agreement  shall be
binding  upon and inure to the benefit of the parties and their  successors  and
assigns.  Neither the Company nor any Buyer shall  assign this  Agreement or any
rights or obligations  hereunder without the prior written consent of the other.
Notwithstanding the foregoing, subject to Section 2(f), any Buyer may assign its
rights  hereunder  to  any  person  that  purchases   Securities  in  a  private
transaction from a Buyer or to any of its  "affiliates," as that term is defined
under the 1934 Act, without the consent of the Company.

                           h.  Third  Party  Beneficiaries.  This  Agreement  is
intended for the benefit of the parties  hereto and their  respective  permitted
successors  and  assigns,  and is not for the benefit of, nor may any  provision
hereof be enforced by, any other person.

                                       20
<PAGE>

                           i. Survival.  The  representations  and warranties of
the Company and the agreements and covenants set forth in Sections 3, 4, 5 and 8
shall  survive  until  the  second  (2nd)   anniversary   of  the  Closing  Date
notwithstanding any due diligence investigation conducted by or on behalf of the
Buyers. The Company agrees to indemnify and hold harmless each of the Buyers and
all their officers,  directors,  employees and agents for loss or damage arising
as a result of or related to any breach or alleged  breach by the Company of any
of its  representations,  warranties and covenants set forth in Sections 3 and 4
hereof or any of its  covenants  and  obligations  under this  Agreement  or the
Registration  Rights  Agreement,  including  advancement of expenses as they are
incurred.

                           j.  Publicity.  The  Company  and each of the  Buyers
shall have the right to review a  reasonable  period of time before  issuance of
any press releases,  SEC, Nasdaq or NASD filings, or any other public statements
with respect to the transactions  contemplated hereby;  provided,  however, that
the Company shall be entitled, without the prior approval of each of the Buyers,
to make any press  release or SEC,  Nasdaq or NASD  filings with respect to such
transactions as is required by applicable law and regulations (although a single
firm of counsel  designated  by the Buyers  shall be consulted by the Company in
connection  with any  such  press  release  prior to its  release  and  shall be
provided with a copy thereof and be given an opportunity to comment thereon).

                           k.  Further  Assurances.  Each  party  shall  do  and
perform,  or cause to be done and  performed,  all such further acts and things,
and  shall  execute  and  deliver  all  such  other  agreements,   certificates,
instruments and documents, as the other party may reasonably request in order to
carry out the intent and  accomplish  the  purposes  of this  Agreement  and the
consummation of the transactions contemplated hereby.

                           l. No Strict Construction.  The language used in this
Agreement  will be deemed to be the  language  chosen by the  parties to express
their mutual intent, and no rules of strict construction will be applied against
any party.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       21
<PAGE>

                  IN WITNESS  WHEREOF,  the  undersigned  Buyers and the Company
have  caused  this  Agreement  to be duly  executed  as of the date first  above
written.


SIGMA DESIGNS, INC.


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


RGC INTERNATIONAL INVESTORS, LDC
By:      Rose Glen Capital Management, L.P., Investment Manager
         By:      RGC General Partner Corp., as General Partner


By:
   --------------------------------------
         Wayne D. Bloch
         Managing Director

RESIDENCE:   Cayman Islands

ADDRESS:

         c/o Rose Glen Capital Management, L.P.
         3 Bala Plaza East, Suite 200
         251 St. Asaphs Road
         Bala Cynwyd, PA  19004
         Facsimile:        (610) 617-0570
         Telephone:        (610) 617-5900


AGGREGATE SUBSCRIPTION AMOUNT:

         Number of Shares of Preferred Stock:                              5,000

         Number of Warrants:                                              50,000

         Aggregate Purchase Price:                                    $5,000,000


                                       22
<PAGE>


                                    Exhibit A



                (Certificate of Determination--See Exhibit 4.3)



                                        1





<PAGE>

                                   Exhibit B


                   (Stock Purchase Warrant--See Exhibit 4.4)


                                       
<PAGE>


                                    Exhibit C

                [Registration Rights Agreement - See Exhibit 4.2]




<PAGE>


                                    Exhibit D




                                February 10, 1998



RGC International Investors, LDC
c/o Rose Glen Capital Management, L.P.
3 Bala Plaza East, Suite 200
251 St. Asaphs Road
Bala Cynwyd, PA  19004

Ladies and Gentlemen:

         Reference is made to the  Securities  Purchase  Agreement,  dated as of
January 30, 1998 (the  "Agreement"),  complete with all listed exhibits thereto,
by and among Sigma Designs, Inc., a California corporation (the "Company"),  and
RCG  International  Investors,  LDC (the  "Investors"),  which  provides for the
issuance by the Company to the  Investors of shares of Series B Preferred  Stock
of the Company (the  "Shares") and Warrants to purchase  50,000 shares of Common
Stock (the "Warrants"). This opinion is rendered to you pursuant to Section 7(h)
of the Agreement,  and all terms used herein have the meanings  defined for them
in the Agreement unless otherwise defined herein.

         We have  acted  as  counsel  for the  Company  in  connection  with the
negotiation  of the  Agreement  and the  Registration  Rights  Agreement and the
issuance of the Shares and Warrants.  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 such corporate  records of the Company,  certificates  of
public  officials  and such  other  documents  which we  consider  necessary  or
advisable for the purpose of rendering this opinion. In such examination we have
assumed  the   genuineness  of  all  signatures  on  original   documents,   the
authenticity and completeness of all documents submitted to us as originals, the
conformity  to  original  documents  of all copies  submitted  to us and the due
execution and delivery of all documents (except as to due execution and delivery
by the Company)  where due  execution  and delivery  are a  prerequisite  to the
effectiveness thereof.

<PAGE>


         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  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 Agreement,  and we are assuming
that the  representations  and warranties made by the Investors in the Agreement
and  pursuant  thereto  are true and  correct.  We are  also  assuming  that the
Investors have purchased the Shares for value,  in good faith and without notice
of any adverse  claims within the meaning of the California  Uniform  Commercial
Code.

         The  opinions  hereinafter  expressed  are  subject  to  the  following
qualifications:

                  (a) We  express  no  opinion  as to the  effect of  applicable
bankruptcy, insolvency,  reorganization,  moratorium or other similar federal or
state laws affecting the rights of creditors;

                  (b) We  express  no  opinion  as to the effect of rules of law
governing  specific  performance,  injunctive relief or other equitable remedies
(regardless  of whether any such remedy is  considered in a proceeding at law or
in equity);

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

                  (d) We  express no  opinion  as to the  enforceability  of the
indemnification  provisions  of  Sections  6 and 7 of  the  Registration  Rights
Agreement to the extent the provisions  thereof may be subject to limitations of
public policy and the effect of applicable statutes and judicial decisions; and

                  (e) We express no opinion  as to whether  the  Agreement,  the
Certificate of Determination, the Registration Rights Agreement and the Warrants
or the several transaction  contemplated thereby violate or constitute a default
under the Certificate of  Determination  for the Series A Preferred  Stock,  and
several documents  executed by and among the Company and the several  purchasers
of the Series A  Preferred  Stock of the  Company  (collectively,  the "Series A
Documents")  or whether  the  consent or approval of the holders of the Series A
Preferred  Stock is required for the execution,  delivery and performance of and
compliance  with the terms of the Agreement,  and the issuance of the Shares and
Warrants (and the Common Stock issuable upon conversion and exercise thereof).

                                       2

<PAGE>

                  (f) We are members of the Bar of the State of California  and,
except as set forth in paragraph 7 below with respect to the securities  laws of
other states, we express no opinion as to any matter relating to the laws of any
jurisdiction other than the federal laws of the United States of America and the
laws of the State of California. To the extent this opinion addresses applicable
securities  laws of  states  other  than the  State of  California,  we have not
retained  nor  relied on the  opinion  of  counsel  admitted  to the bar of such
states,  but rather have relied on  compilations  of the securities laws of such
states contained in reporting services presently available to us.

         Based upon and subject to the foregoing, and except as set forth in the
Schedule of Exceptions to the Agreement, we are of the opinion that:

         1. The Company is a corporation  duly  organized  and validly  existing
under,  and by virtue  of,  the laws of the State of  California  and is in good
standing under such laws. The Company has requisite  corporate  power to own and
operate its  properties  and assets,  and to carry on its  business as presently
conducted.

         2. The Company has all requisite  legal and corporate  power to execute
and deliver the Agreement and the  Registration  Rights  Agreement,  to sell and
issue the  Shares and  Warrants  thereunder,  to issue the  Common  Stock of the
Company ("Common Stock") issuable upon conversion of the Shares and the exercise
of the Warrants and to carry out and perform its obligations  under the terms of
the Agreement and the Registration Rights Agreement.

         3. As of January 21, 1998, the authorized  capital stock of the Company
consists of 20,000,000  shares of Common Stock,  11,646,075  shares of which are
issued and outstanding, and 50,000 shares of Series A Preferred Stock ("Series A
Preferred"),  45,000 shares of which are issued and  outstanding.  Each share of
outstanding  Common Stock also  represents an  associated  Right as such term is
defined in and pursuant to that certain Common Shares Rights Agreement, dated as
of September  15, 1989,  between the Company and Bank of America,  N.T.& S.A., a
national banking association. All such issued and outstanding shares of Series A
Preferred and Common Stock have been duly  authorized and validly issued and are
fully paid and  nonassessable.  Three million four hundred thousand  (3,400,000)
shares of Common Stock  issuable upon  conversion of the Shares and the exercise
of the  Warrants  have  been  duly and  validly  reserved,  and when  issued  in
accordance with the Company's  Articles of Incorporation will be validly issued,
fully paid and nonassessable and free of any liens,  encumbrances and preemptive
or similar  rights,  subject to the  requirements of Rule 4460(i) of the NASD or
any rule  substantially  similar on an exchange or quotation system on which the
Common  Stock  is  traded.   Upon  consummation  of  the  several   transactions
contemplated  by the  Agreement  and subject to the terms of  conditions  of the
Agreement,  the Shares and Warrants  issued under the Agreement shall be validly
issued,  fully paid and  nonassessable  and free of any liens,  encumbrances and
preemptive  or similar  rights  contained  in the Articles of  Incorporation  or
Bylaws of the  Company,  or, to our  knowledge,  in any  agreement  to which the
Company is a party,  and which  agreement is described in or filed as an exhibit
to the SEC  Documents,  the Series A  Documents,  or the  Amended  and  Restated
Business  Loan  Agreement  between the  Company  and  Silicon  Valley Bank dated
effective  as of October 1, 1996  together  with all  modifications  and waivers
thereto  (the  "Loan  Agreement"),   except  as  specifically  provided  in  the
Agreement; provided, however, that the Shares and Warrants (and the Common Stock
issuable upon conversion or exercise  thereof) may be subject to restrictions on
transfer under state and/or federal securities laws as set forth in the

                                       3
<PAGE>


Agreement.  To our  knowledge,  except  as  disclosed  in  Schedule  3(c) to the
Agreement,  (i) there are no outstanding  options,  warrants,  scrip,  rights to
subscribe to, calls or commitments of any character  whatsoever  relating to, or
securities  or rights  convertible  into,  any  shares of  capital  stock of the
Company or any of its subsidiaries,  or arrangements by which the Company or any
of its subsidiaries is or may become bound to issue additional shares of capital
stock  of the  Company  or  any  of its  subsidiaries,  and  (ii)  there  are no
agreements or  arrangements  under which the Company or any of its  subsidiaries
currently is  obligated  to register the sale of any of its or their  securities
under the 1933 Act (except the Registration Rights Agreement).

         4. All corporate  action on the part of the Company,  its directors and
shareholders  necessary  for the  authorization,  execution  and delivery of the
Agreement  and  the   Registration   Rights   Agreement  by  the  Company,   the
authorization,  sale,  issuance and delivery of the Shares (and the Common Stock
issuable  upon  conversion   thereof)  and  the  performance  of  the  Company's
obligations  under the Agreement has been taken subject to the  requirements  of
Rule  4460(i) of the NASD or any rule  substantially  similar on an  exchange or
quotation  system on which the Common  Stock is traded.  The  Agreement  and the
Registration  Rights  Agreement has been duly and validly executed and delivered
by the Company and constitutes a valid and binding obligation of the Company.

         5. The execution,  delivery and  performance of and compliance with the
terms of the  Agreement,  and the issuance of the Shares and  Warrants  (and the
Common Stock issuable upon conversion or exercise  thereof),  do not violate any
provision of the Articles of Incorporation or Bylaws, or, to our knowledge,  any
provision of any  applicable  federal or state law, rule or  regulation.  To our
knowledge,  the execution,  delivery and  performance of and compliance with the
Agreement and the Registration Rights Agreement,  and the issuance of the Shares
and Warrants (and the Common  issuable upon  conversion or exercise  thereof) do
not violate,  or constitute a default under, any material  contract,  agreement,
instrument,  judgment or decree  binding  upon the  Company and which  contract,
agreement,  instrument, judgement or decree has been disclosed in or filed as an
exhibit to the  Company's  SEC  Documents,  the Series A Documents,  or the Loan
Agreement.

         6. Except as identified in the Agreement,  to our knowledge,  there are
no actions, suits,  proceedings or investigations pending against the Company or
its properties  before any court or governmental  agency (nor, to our knowledge,
has the Company received any written threat thereof),  which, either in any case
or in the  aggregate,  would  have a  Material  Adverse  Effect  or which  would
adversely  affect the  validity or the  enforceability  of the  Agreement or the
Registration  Rights Agreement or any action taken or to be taken by the Company
in connection therewith.

         7. No consent, approval or authorization of or designation, declaration
or filing  with any  governmental  authority  or the Nasdaq  Stock  Market  (the
"Nasdaq")  on the part of the Company is required in  connection  with the valid
execution and delivery of the Agreement and the Registration  Rights  Agreement,
or the offer,  sale or issuance of the Shares and Warrants (and the Common Stock
issuable upon conversion or exercise  thereof) or the  consummation of any other
transaction contemplated by the Agreement,  except (a) filing of the Certificate
of  Determination  in the  Office  of the  Secretary  of State  of the  State of
California,  (b)  qualification  (or taking such action as may be  necessary  to
secure an exemption  from  qualification,  if  available)  under the  California
Corporate  Securities  Law and other  applicable  blue sky laws  (but  excluding
jurisdictions  outside of the United States) of the offer and sale of the Shares
(and the Common Stock issuable upon conversion thereof)

                                       4
<PAGE>

and (c) the filing of an application  for the listing of additional  shares with
the Nasdaq. The filing referred to in clause (a) above has been accomplished and
is effective.  Our opinion herein is otherwise  subject to the timely and proper
completion  of all  filings and other  actions  contemplated  herein  where such
filings and actions are to be undertaken on or after the date hereof.

         8. Subject to the accuracy of the Investors' representations in Section
2 of the Agreement and their responses (if any) to the Company's  inquiries,  we
are of the opinion that the offer, sale and issuance of the Shares in conformity
with  the  terms  of the  Agreement  constitute  transactions  exempt  from  the
registration  requirements  of  Section  5 of the  Securities  Act of  1933,  as
amended.

                                       5
<PAGE>

         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 or for any other purpose without our prior written consent.


                                                Very truly yours,

                                                WILSON SONSINI GOODRICH & ROSATI
                                                Professional Corporation

                                       6



<PAGE>


                               DISCLOSURE SCHEDULE



<PAGE>



3a.      Organization


         None.

                                       -2-

<PAGE>


3b.      Authorization; Enforcement


         Series A Preferred Stock (Copies of the  Certificate of  Determination,
Subscription  Agreement,  Registration Rights Agreement and Warrant are attached
as Addendum 3b).

                                       -3-

<PAGE>


3c.      Capitalization


         1.       Series A Preferred  Stock (See documents  attached to Schedule
                  3b).

         2.       Sigma Designs 1994 Stock Option Plan.

         3.       Sigma Designs 1994 Director Stock Option Plan.

         4.       Active Design Stock Option Plan.

         5.       Each share of Common Stock incorporates a purchase right which
                  entitles the shareholder to buy, under certain  circumstances,
                  one newly  issued  share of the  Common  Stock at an  exercise
                  price per share of $75.  The rights  become  exercisable  if a
                  person or group  acquires  20% or more of the Common  Stock or
                  announces  a tender or  exchange  offer for 30% or more of the
                  Common  Stock  under  certain  circumstances.  In the event of
                  certain  merger or sale  transactions,  each  Right  will then
                  entitle the holder to acquire  shares  having a value of twice
                  the Right's  exercise price. The Company may redeem the Rights
                  at $.01 per Right  prior to the earlier of the  expiration  of
                  the  Rights on  November  27,  1999 or at the time that 20% or
                  more of the  Company's  common  stock has been  acquired  by a
                  person or group.  Until the Rights  become  exercisable,  they
                  have no dilutive effect on the earnings of the Company.

                                       -4-

<PAGE>


3e.      No Conflicts


         Series A Preferred Stock (See documents attached to Schedule 3b).

                                       -5-

<PAGE>


3g.      Absence of Certain Changes


         The  Company   incurred  a  charge  to  earnings  related  to  accounts
receivable  in the second  quarter  of fiscal  year  1998.  Please the  attached
Quarterly Report on Form 10-Q dated as of September 12, 1997.

                                       -6-

<PAGE>


3h.      Absence of Litigation


1)       The Company is the subject of:

         A)       A lawsuit filed by Phillips  Electronics  alleging a breach of
                  contract.   Case  number  774607-7  filed  in  Alameda  County
                  Superior Court on March 6, 1997.

         B)       A lawsuit  filed by Compudata,  Inc. for an unpaid  balance in
                  the amount of $10,600.00  Case Number  083920,  Alameda County
                  Superior Court.

         C)       A lawsuit filed by Gregory Jones on February 26, 1997,  former
                  V.P., Marketing,  for wrongful termination and unpaid business
                  expenses,  Case Number  CV764366,  Santa Clara County Superior
                  Court.

2)       The Company has received a:

         A)       Letter dated August 8, 1995, from Tandy Corporation, regarding
                  dispute over outstanding amount allegedly owed.

         B)       Letter  dated  January  3,  1997  from  attorney  representing
                  Mindscope in re: alleged unpaid software development licensing
                  fee.

         C)       Verbal communication from counsel representing former employee
                  in lawsuit  filed by the Company that  cross-complaint  may be
                  filed.

                                       -7-

<PAGE>


3i.      Patents, Copyrights, etc.


         None.

                                       -8-

<PAGE>


3k.      Tax matters.


         None.

                                       -9-

<PAGE>


3l.      Certain Transactions.


         None.

                                      -10-

<PAGE>


3r.      Environmental Matters.


         None.

                                      -11-

<PAGE>


3t.      Title to Property.


         None.

                                      -12-

<PAGE>


4d.      Use of Proceeds.


         The net  proceeds to be  received  by the Company  from the sale of the
Securities will be used for general corporate purposes.

                                      -13-

<PAGE>


Addendum 3b.

(See Exhibits 4.1 and 4.2 of Registration Statement No. 333-33147.)

                                      -14-





                                                                     Exhibit 4.2



                          REGISTRATION RIGHTS AGREEMENT

         REGISTRATION RIGHTS AGREEMENT (this  "Agreement"),  dated as of January
30, 1998, by and among Sigma Designs, Inc., a California  corporation,  with its
headquarters  located at 46501 Landing Parking,  Fremont,  California 94538 (the
"Company"),  and  each  of  the  undersigned  (together  with  their  respective
affiliates  and any assignee or  transferee  of all of their  respective  rights
hereunder, the "Initial Investors").

         WHEREAS:

         A. In connection  with the Securities  Purchase  Agreement by and among
the parties hereto of even date herewith (the "Securities Purchase  Agreement"),
the Company has agreed,  upon the terms and subject to the conditions  contained
therein,  to issue and sell to the Initial  Investors (i) shares of its Series B
Convertible  Preferred Stock (the "Preferred  Stock") that are convertible  into
shares (the "Conversion Shares") of the Company's common stock, no par value per
share (the "Common  Stock"),  upon the terms and subject to the  limitations and
conditions set forth in the Certificate of Determination of Rights, Preferences,
Privileges  and   Restrictions   with  respect  to  the  Preferred   Stock  (the
"Certificate of  Determination")  and (ii) warrants (the  "Warrants") to acquire
50,000  shares  of  Common  Stock  (the  "Warrant  Shares"),  upon the terms and
conditions  and  subject  to the  limitations  and  conditions  set forth in the
Warrants dated January 30, 1998; and

         B.  To  induce  the  Initial  Investors  to  execute  and  deliver  the
Securities  Purchase  Agreement,  the  Company  has  agreed to  provide  certain
registration rights under the Securities Act of 1933, as amended,  and the rules
and regulations thereunder, or any similar successor statute (collectively,  the
"1933 Act"), and applicable state securities laws;

         NOW,  THEREFORE,  in  consideration  of the  premises  and  the  mutual
covenants  contained  herein  and other  good and  valuable  consideration,  the
receipt and sufficiency of which are hereby  acknowledged,  the Company and each
of the Initial Investors hereby agree as follows:

         1.       DEFINITIONS.

                  a. As used in this  Agreement,  the following terms shall have
the following meanings:



<PAGE>






                           (i) "Investors"  means the Initial  Investors and any
transferee  or assignee  who agrees to become  bound by the  provisions  of this
Agreement in accordance with Section 9 hereof.

                           (ii)  "register,"  "registered,"  and  "registration"
refer  to a  registration  effected  by  preparing  and  filing  a  Registration
Statement or Statements in compliance with the 1933 Act and pursuant to Rule 415
under the 1933 Act or any successor rule providing for offering  securities on a
continuous  basis ("Rule 415"), and the declaration or ordering of effectiveness
of such  Registration  Statement by the United  States  Securities  and Exchange
Commission (the "SEC").

                           (iii)  "Registrable  Securities" means the Conversion
Shares and Warrant  Shares  issued or issuable  and any shares of capital  stock
issued or issuable as a dividend on or in exchange for or otherwise with respect
to any of the foregoing.

                           (iv)  "Registration  Statement"  means a registration
statement of the Company under the 1933 Act.

                  b.  Capitalized  terms used herein and not  otherwise  defined
herein shall have the respective  meanings set forth in the Securities  Purchase
Agreement.

         2.       REGISTRATION.

                  a. Mandatory Registration.  The Company shall prepare, and, on
or prior to the date  which is thirty  (30) days  after the date of the  Closing
under the Securities  Purchase Agreement (the "Closing Date"), file with the SEC
a Registration Statement on Form S-3 (or, if Form S-3 is not then available,  on
such  form  of  Registration   Statement  as  is  then  available  to  effect  a
registration  of the  Registrable  Securities,  subject  to the  consent  of the
Initial Investors, which consent will not be unreasonably withheld) covering the
resale of the Registrable Securities underlying the Preferred Stock and Warrants
issued  or  issuable  pursuant  to  the  Securities  Purchase  Agreement,  which
Registration Statement, to the extent allowable under the 1933 Act and the Rules
promulgated  thereunder (including Rule 416), shall state that such Registration
Statement also covers such  indeterminate  number of additional shares of Common
Stock as may become issuable upon conversion of the Preferred Stock and exercise
of the Warrants  (i) to prevent  dilution  resulting  from stock  splits,  stock
dividends or similar transactions or (ii) by reason of changes in the Conversion
Price  of the  Preferred  Stock in  accordance  with the  terms  thereof  or the
exercise price of the Warrants in accordance with the terms thereof.  The number
of shares of Common  Stock  initially  included in such  Registration  Statement
shall be no less than two (2) times the sum of the number of  Conversion  Shares
and Warrant Shares that are then issuable upon conversion of the Preferred Stock
and the  exercise  of the  Warrants  without  regard  to any  limitation  on the
Investor's ability to convert the Preferred Stock or exercise the Warrants.  The
Company  acknowledges  that the  number  of  shares  initially  included  in the
Registration Statement represents

                                       2
<PAGE>

a good faith estimate of the maximum number of shares  issuable upon  conversion
and exercise of the Preferred Stock and Warrants.

                  b.  Underwritten  Offering.  If  any  offering  pursuant  to a
Registration  Statement pursuant to Section 2(a) hereof involves an underwritten
offering,  the  Investors  who hold a majority in  interest  of the  Registrable
Securities  subject  to  such  underwritten  offering,  with  the  consent  of a
majority-in-interest  of the Initial  Investors,  shall have the right to select
one legal counsel and an investment banker or bankers and manager or managers to
administer  the  offering,  which  investment  banker or  bankers  or manager or
managers shall be reasonably satisfactory to the Company.

                  c.  Payments by the  Company.  The Company  shall use its best
efforts  to  obtain  effectiveness  of the  Registration  Statement  as  soon as
practicable.  If (i) the  Registration  Statement(s)  covering  the  Registrable
Securities  required to be filed by the Company  pursuant to Section 2(a) hereof
is not declared  effective by the SEC within  ninety (90) days after the Closing
Date or if, after the Registration  Statement has been declared effective by the
SEC, sales cannot be made pursuant to the  Registration  Statement,  or (ii) the
Common  Stock is not listed or included  for  quotation  on the Nasdaq  National
Market System ("Nasdaq"),  the Nasdaq SmallCap Market ("Nasdaq  SmallCap"),  the
New York Stock Exchange (the "NYSE") or the American Stock Exchange (the "AMEX")
after  being so listed or included  for  quotation,  then the Company  will make
payments  to the  Investors  in such  amounts  and at such  times  as  shall  be
determined  pursuant to this Section  2(c) as partial  relief for the damages to
the  Investors by reason of any such delay in or  reduction of their  ability to
sell the  Registrable  Securities  (which  remedy  shall not be exclusive of any
other  remedies  available at law or in equity).  The Company  shall pay to each
holder of the Preferred Stock or Registerable  Securities an amount equal to the
then  outstanding  principal  amount of the Preferred Stock (and, in the case of
holders of Registerable Securities, the principal amount of Preferred Stock from
which such  Registerable  Securities were converted)  ("Aggregate  Share Price")
multiplied by the Applicable Percentage (as defined below) times the sum of: (i)
the number of months  (prorated for partial months) after the end of such 90-day
period and prior to the date the Registration Statement is declared effective by
the SEC,  provided,  however,  that there shall be excluded from such period any
delays which are solely attributable to changes required by the Investors in the
Registration  Statement with respect to  information  relating to the Investors,
including,  without limitation,  changes to the plan of distribution,  or to the
failure of the Investors to conduct their review of the  Registration  Statement
pursuant to Section 3(h) below in a reasonably prompt manner; (ii) the number of
months  (prorated for partial  months) that sales cannot be made pursuant to the
Registration  Statement  after  the  Registration  Statement  has been  declared
effective (including, without limitation, when sales cannot be made by reason of
the Company's  failure to properly  supplement or amend the prospectus  included
therein in  accordance  with the terms of this  Agreement or  otherwise  for any
reason outside the Investor's control,  but excluding Allowed Delays (as defined
in Section 3(f)));  and (iii) the number of months (prorated for partial months)
that the Common  Stock is not listed or included  for  quotation  on the Nasdaq,
Nasdaq  SmallCap,  NYSE or AMEX or that  trading  thereon  is  halted

                                       3
<PAGE>

after  the  Registration  Statement  has  been  declared  effective.   The  term
"Applicable  Percentage"  means one  hundredth  (.010) with respect to the first
thirty (30) days of any  calculation  under  clause (i) of the sentence in which
the term is used, and two hundredths (.020) for any other purpose. (For example,
if the Registration  Statement  becomes effective one (1) month after the end of
such 90-day  period,  the  Company  would pay  $10,000  for each  $1,000,000  of
Aggregate  Share Price.  If thereafter,  sales could not be made pursuant to the
Registration  Statement for an additional  period of one (1) month,  the Company
would pay an additional  $20,000 for each  $1,000,000 of Aggregate Share Price.)
Such amounts shall be paid in cash or, at each Investor's  option,  may be added
to the principal  amount of the Preferred  Stock and  thereafter be  convertible
into Common Stock at the  "Conversion  Price" (as defined in the  Certificate of
Determination)  in accordance with the terms of the Preferred  Stock. Any shares
of Common Stock issued upon  conversion  of such  amounts  shall be  Registrable
Securities.  If the Investor  desires to convert the amounts due hereunder  into
Registrable Securities, it shall so notify the Company in writing within two (2)
business  days of the date on which such  amounts are first  payable in cash and
such amounts shall be so convertible (pursuant to the mechanics set forth in the
Certificate  of  Determination),  beginning  on the last day upon which the cash
amount  would  otherwise  be due in  accordance  with  the  following  sentence.
Payments of cash  pursuant  hereto  shall be made within five (5) days after the
end of each period that gives rise to such  obligation,  provided  that,  if any
such period  extends for more than thirty (30) days,  interim  payments shall be
made for each such thirty (30) day period.

                  d. Piggy-Back  Registrations.  Subject to the last sentence of
this Section  2(d), if at any time prior to the  expiration of the  Registration
Period  (as  hereinafter  defined)  the  Company  shall  file  with  the  SEC  a
Registration  Statement  relating  to an  offering  for its own  account  or the
account of others under the 1933 Act of any of its equity securities (other than
on Form S-4 or Form S-8 or their then equivalents  relating to equity securities
to be issued solely in connection with any acquisition of any entity or business
or equity securities  issuable in connection with stock option or other employee
benefit  plans),  the  Company  shall send to each  Investor  who is entitled to
registration rights under this Section 2(d) written notice of such determination
and, if within fifteen (15) days after the effective  date of such notice,  such
Investor  shall so  request  in  writing,  the  Company  shall  include  in such
Registration  Statement  all or any  part  of the  Registrable  Securities  such
Investor  requests  to be  registered,  except that if, in  connection  with any
underwritten  public  offering  for the  account  of the  Company  the  managing
underwriter(s)  thereof  shall  impose a  limitation  on the number of shares of
Common Stock which may be included in the  Registration  Statement  because,  in
such  underwriter(s)'   judgment,   marketing  or  other  factors  dictate  such
limitation  is necessary to  facilitate  public  distribution,  then the Company
shall be obligated to include in such  Registration  Statement only such limited
portion of the  Registrable  Securities  with respect to which such Investor has
requested  inclusion hereunder as the underwriter shall permit. Any exclusion of
Registrable  Securities  shall be made pro rata among the  Investors  seeking to
include  Registrable  Securities  in  proportion  to the  number of  Registrable
Securities sought to be included by such Investors;  provided, however, that the
Company  shall not exclude  any  Registrable  Securities  unless the Company has
first excluded all outstanding

                                       4
<PAGE>

securities,  the  holders  of  which  are  not  entitled  to  inclusion  of such
securities  in such  Registration  Statement  or are not  entitled  to pro  rata
inclusion with the Registrable Securities; and provided, further, however, that,
after giving  effect to the  immediately  preceding  proviso,  any  exclusion of
Registrable  Securities  shall be made pro rata with holders of other securities
having the right to include such securities in the Registration  Statement other
than holders of  securities  entitled to inclusion of their  securities  in such
Registration  Statement  by reason of demand  registration  rights.  No right to
registration  of  Registrable  Securities  under  this  Section  2(d)  shall  be
construed to limit any  registration  required under Section 2(a) hereof.  If an
offering in connection with which an Investor is entitled to registration  under
this  Section  2(d)  is an  underwritten  offering,  then  each  Investor  whose
Registrable Securities are included in such Registration Statement shall, unless
otherwise agreed by the Company,  offer and sell such Registrable  Securities in
an underwritten offering using the same underwriter or underwriters and, subject
to the provisions of this  Agreement,  on the same terms and conditions as other
shares of Common Stock included in such underwritten  offering.  Notwithstanding
anything  to the  contrary  set forth  herein,  the  registration  rights of the
Investors pursuant to this Section 2(d) shall only be available in the event the
Company fails to timely file, obtain effectiveness or maintain  effectiveness of
the  Registration  Statement to be filed  pursuant to Section 2(a) in accordance
with the terms of this Agreement.

                  e.  Eligibility  for Form  S-3.  The  Company  represents  and
warrants that it meets the registrant  eligibility and transaction  requirements
for the use of Form S-3 for  registration  of the sale by the Initial  Investors
and any other Investors of the Registrable Securities and the Company shall file
all reports  required to be filed by the Company with the SEC in a timely manner
to the extent required to maintain such eligibility for the use of Form S-3.

         3.       OBLIGATIONS OF THE COMPANY.

         In connection with the registration of the Registrable Securities,  the
Company shall have the following obligations:

                  a. The Company shall prepare  promptly,  and file with the SEC
not later than thirty (30) days after the Closing Date, a Registration Statement
with respect to the number of Registrable  Securities  provided in Section 2(a),
and  thereafter  use its best  efforts  to  cause  such  Registration  Statement
relating to Registrable Securities to become effective as soon as possible after
such filing, and keep the Registration  Statement effective pursuant to Rule 415
at all times  until such date as is the  earlier of (i) the date on which all of
the  Registrable  Securities  have  been  sold and  (ii)  the date on which  the
Registrable  Securities (in the opinion of counsel to the Initial Investors) may
be immediately  sold without  restriction  (including  without  limitation as to
volume by each  holder  thereof)  without  registration  under the 1933 Act (the
"Registration  Period"),  which Registration Statement (including any amendments
or supplements thereto and prospectuses contained therein) shall not contain any
untrue statement of a material fact or omit to state a material fact required to
be stated therein, or necessary to make the statements therein not misleading.

                                       5
<PAGE>

                  b.  The  Company  shall  prepare  and  file  with the SEC such
amendments  (including   post-effective   amendments)  and  supplements  to  the
Registration   Statement  and  the  prospectus   used  in  connection  with  the
Registration  Statement as may be necessary to keep the  Registration  Statement
effective at all times during the Registration  Period, and, during such period,
comply with the  provisions of the 1933 Act with respect to the  disposition  of
all Registrable  Securities of the Company covered by the Registration Statement
until such time as all of such  Registrable  Securities have been disposed of in
accordance  with the intended  methods of  disposition  by the seller or sellers
thereof as set forth in the Registration  Statement.  In the event the number of
shares available under a Registration Statement filed pursuant to this Agreement
is insufficient to cover all of the  Registrable  Securities  issued or issuable
upon conversion of the Preferred Stock and exercise of the Warrants, the Company
shall amend the Registration Statement, or file a new Registration Statement (on
the short form available therefore, if applicable),  or both, so as to cover all
of the Registrable Securities, in each case, as soon as practicable,  but in any
event within  twenty (20)  business  days after the  necessity  therefor  arises
(based on the market  price of the Common  Stock and other  relevant  factors on
which the Company  reasonably  elects to rely).  The Company  shall use its best
efforts to cause such  amendment  and/or new  Registration  Statement  to become
effective as soon as practicable following the filing thereof. The provisions of
Section 2(c) above shall be applicable with respect to such obligation, with the
ninety  (90) days  running  from the day  after  the date on which  the  Company
reasonably  first  determines (or reasonably  should have  determined)  the need
therefor.

                  c.  The  Company  shall   furnish  to  each   Investor   whose
Registrable  Securities are included in the Registration Statement and its legal
counsel (i) promptly after the same is prepared and publicly distributed,  filed
with the SEC, or received by the Company, one copy of the Registration Statement
and any amendment thereto,  each preliminary  prospectus and prospectus and each
amendment or supplement thereto, and, in the case of the Registration  Statement
referred to in Section 2(a),  each letter written by or on behalf of the Company
to the SEC or the staff of the SEC, and each item of correspondence from the SEC
or the staff of the SEC, in each case  relating to such  Registration  Statement
(other than any portion of any thereof which contains  information for which the
Company has sought confidential treatment),  and (ii) such number of copies of a
prospectus,   including  a  preliminary  prospectus,   and  all  amendments  and
supplements  thereto and such other  documents as such  Investor may  reasonably
request in order to facilitate  the  disposition of the  Registrable  Securities
owned by such  Investor.  The Company will  immediately  notify each Investor by
facsimile  of  the   effectiveness   of  the   Registration   Statement  or  any
post-effective  amendment.  The  Company  will  promptly  respond to any and all
comments  received  from the SEC, with a view towards  causing any  Registration
Statement or any amendment  thereto to be declared  effective by the SEC as soon
as  practicable  and shall  promptly  file an  acceleration  request  as soon as
practicable  following  the  resolution  or clearance of all SEC comments or, if
applicable, following notification by the SEC that the Registration Statement or
any amendment thereto will not be subject to review.

                                       6
<PAGE>

                  d. The Company  shall use  reasonable  efforts to (i) register
and qualify the Registrable  Securities  covered by the  Registration  Statement
under such other  securities  or "blue  sky" laws of such  jurisdictions  in the
United  States  as  the  Investors  who  hold  a  majority  in  interest  of the
Registrable  Securities being offered reasonably request,  (ii) prepare and file
in those jurisdictions such amendments (including post-effective amendments) and
supplements  to such  registrations  and  qualifications  as may be necessary to
maintain the effectiveness  thereof during the Registration  Period,  (iii) take
such other  actions as may be  necessary  to  maintain  such  registrations  and
qualifications in effect at all times during the Registration  Period,  and (iv)
take all  other  actions  reasonably  necessary  or  advisable  to  qualify  the
Registrable Securities for sale in such jurisdictions;  provided,  however, that
the  Company  shall not be required in  connection  therewith  or as a condition
thereto to (a)  qualify to do business  in any  jurisdiction  where it would not
otherwise be required to qualify but for this Section 3(d),  (b) subject  itself
to general  taxation  in any such  jurisdiction,  (c) file a general  consent to
service of process in any such  jurisdiction,  (d) provide any undertakings that
cause the Company undue expense or burden, or (e) make any change in its charter
or bylaws,  which in each case the Board of Directors of the Company  determines
to be contrary to the best interests of the Company and its stockholders.

                  e. In the event Investors who hold a  majority-in-interest  of
the Registrable Securities being offered in the offering (with the approval of a
majority-in-interest  of the  Initial  Investors)  select  underwriters  for the
offering,  the Company  shall enter into and  perform its  obligations  under an
underwriting  agreement,  in  usual  and  customary  form,  including,   without
limitation,  customary  indemnification and contribution  obligations,  with the
underwriters of such offering.

                  f. As promptly as  practicable  after  becoming  aware of such
event,  the Company shall notify each Investor of the happening of any event, of
which the Company has knowledge, as a result of which the prospectus included in
the Registration Statement, as then in effect, includes an untrue statement of a
material fact or omission to state a material fact required to be stated therein
or necessary to make the  statements  therein not  misleading,  and use its best
efforts  promptly  to prepare a  supplement  or  amendment  to the  Registration
Statement to correct such untrue statement or omission,  and deliver such number
of copies of such  supplement or amendment to each Investor as such Investor may
reasonably request; provided that, for not more than forty-five (45) consecutive
trading  days (or a total of not more than sixty (60) trading days in any twelve
(12) month period),  the Company may delay the disclosure of material non-public
information  concerning  the  Company  (as well as  prospectus  or  Registration
Statement  updating)  the  disclosure  of which at the time is not,  in the good
faith  opinion of the  Company,  the best  interests of the Company (an "Allowed
Delay");  provided,  further,  that the Company  shall  promptly  (i) notify the
Investors  in writing of the  existence  of (but in no event,  without the prior
written consent of an Investor,  shall the Company disclose to such investor any
of the facts or circumstances  regarding) material non-public information giving
rise to an Allowed  Delay and (ii) advise the  Investors in writing to cease all
sales under the Registration Statement until the end of

                                       7
<PAGE>

the Allowed Delay. Upon expiration of the Allowed Delay, the Company shall again
be  bound by the  first  sentence  of this  Section  3(f)  with  respect  to the
information giving rise thereto.

                  g. The  Company  shall use its best  efforts  to  prevent  the
issuance  of  any  stop  order  or  other   suspension  of  effectiveness  of  a
Registration  Statement,  and,  if  such an  order  is  issued,  to  obtain  the
withdrawal  of such order at the  earliest  possible  moment and to notify  each
Investor  who holds  Registrable  Securities  being sold (or, in the event of an
underwritten  offering, the managing underwriters) of the issuance of such order
and the resolution thereof.

                  h.  The  Company   shall  permit  a  single  firm  of  counsel
designated by the Initial Investors to review the Registration Statement and all
amendments and supplements  thereto (as well as all requests for acceleration or
effectiveness  thereof) a  reasonable  period of time prior to their filing with
the SEC, and not file any  document in a form to which such  counsel  reasonably
objects and will not request acceleration of the Registration  Statement without
prior  notice  to such  counsel.  The  sections  of the  Registration  Statement
covering  information with respect to the Investors,  the Investor's  beneficial
ownership  of  securities  of the Company or the  Investors  intended  method of
disposition of Registrable  Securities shall conform to the information provided
to the Company by each of the Investors.

                  i. The Company shall make generally  available to its security
holders  as soon as  practical,  but not later than  ninety  (90) days after the
close of the period covered  thereby,  an earnings  statement (in form complying
with the  provisions  of Rule 158 under the 1933 Act)  covering  a  twelve-month
period  beginning not later than the first day of the Company's  fiscal  quarter
next following the effective date of the Registration Statement.

                  j. At the request of any Investor,  the Company shall furnish,
on the date that Registrable Securities are delivered to an underwriter, if any,
for sale in connection  with the  Registration  Statement or, if such securities
are not being sold by an underwriter,  on the date of effectiveness  thereof (i)
an opinion,  dated as of such date,  from counsel  representing  the Company for
purposes of such  Registration  Statement,  in form,  scope and  substance as is
customarily  given  in  an  underwritten  public  offering,   addressed  to  the
underwriters, if any, and the Investors and (ii) a letter, dated such date, from
the Company's  independent certified public accountants in form and substance as
is customarily given by independent certified public accountants to underwriters
in an underwritten public offering,  addressed to the underwriters,  if any, and
the Investors.

                  k. The Company shall make  available for inspection by (i) any
Investor, (ii) any underwriter  participating in any disposition pursuant to the
Registration Statement,  (iii) one firm of attorneys and one firm of accountants
or other agents  retained by the Initial  Investors,  (iv) one firm of attorneys
and one firm of accountants or other agents retained by all other Investors, and
(v) one firm of attorneys retained by all such underwriters  (collectively,  the
"Inspectors") all pertinent financial and other records, and pertinent corporate
documents and properties of the Company (collectively,  the "Records"), as shall
be reasonably deemed necessary by each

                                       8
<PAGE>

Inspector to enable each Inspector to exercise its due diligence responsibility,
and cause  the  Company's  officers,  directors  and  employees  to  supply  all
information which any Inspector may reasonably  request for purposes of such due
diligence;  provided,  however, that each Inspector shall hold in confidence and
shall not make any  disclosure  (except to an  Investor)  of any Record or other
information which the Company  determines in good faith to be confidential,  and
of which determination the Inspectors are so notified, unless (a) the disclosure
of such Records is necessary to avoid or correct a  misstatement  or omission in
any Registration Statement,  (b) the release of such Records is ordered pursuant
to a  subpoena  or other  order  from a court or  government  body of  competent
jurisdiction,  or (c) the  information  in such Records has been made  generally
available  to the public  other than by  disclosure  in violation of this or any
other agreement.  The Company shall not be required to disclose any confidential
information  in such Records to any  Inspector  until and unless such  Inspector
shall  have  entered  into  confidentiality  agreements  (in form and  substance
satisfactory   to  the  Company)   with  the  Company   with  respect   thereto,
substantially  in the form of this Section 3(k).  Each  Investor  agrees that it
shall,  upon learning that disclosure of such Records is sought in or by a court
or  governmental  body of competent  jurisdiction  or through other means,  give
prompt notice to the Company and allow the Company, at its expense, to undertake
appropriate  action to prevent  disclosure  of, or to obtain a protective  order
for,  the  Records  deemed  confidential.   Nothing  herein  (or  in  any  other
confidentiality  agreement between the Company and any Investor) shall be deemed
to limit the Investor's ability to sell Registrable Securities in a manner which
is otherwise consistent with applicable laws and regulations.

                  l.  The  Company  shall  hold in  confidence  and not make any
disclosure of information  concerning an Investor provided to the Company unless
(i) disclosure of such  information is necessary to comply with federal or state
securities  laws, (ii) the disclosure of such  information is necessary to avoid
or correct a misstatement or omission in any Registration  Statement,  (iii) the
release of such  information  is ordered  pursuant  to a subpoena or other order
from a court  or  governmental  body of  competent  jurisdiction,  or (iv)  such
information  has been made  generally  available  to the  public  other  than by
disclosure in violation of this or any other agreement.  The Company agrees that
it shall,  upon  learning  that  disclosure  of such  information  concerning an
Investor  is  sought  in  or  by a  court  or  governmental  body  of  competent
jurisdiction  or through other means,  give prompt notice to such Investor prior
to making such disclosure,  and allow the Investor, at its expense, to undertake
appropriate  action to prevent  disclosure  of, or to obtain a protective  order
for, such information.

                  m. The Company shall (i) cause all the Registrable  Securities
covered by the Registration  Statement to be listed on each national  securities
exchange on which  securities  of the same class or series issued by the Company
are then listed,  if any, if the listing of such Registrable  Securities is then
permitted  under the rules of such exchange,  or (ii) secure the designation and
quotation,  of all  the  Registrable  Securities  covered  by  the  Registration
Statement  on the  Nasdaq  or, if not  eligible  for the  Nasdaq  on the  Nasdaq
SmallCap and, without limiting the generality of

                                        9
<PAGE>

the  foregoing,  to arrange for at least two market  makers to register with the
National  Association of Securities Dealers,  Inc. ("NASD") as such with respect
to such Registrable Securities.

                  n. The Company shall provide a transfer  agent and  registrar,
which may be a single entity, for the Registrable  Securities not later than the
effective date of the Registration Statement.

                  o. The Company  shall  cooperate  with the  Investors who hold
Registrable   Securities   being  offered  and  the  managing   underwriter   or
underwriters,  if any, to  facilitate  the timely  preparation  and  delivery of
certificates  (not bearing any  restrictive  legends)  representing  Registrable
Securities to be offered pursuant to the Registration  Statement and enable such
certificates to be in such denominations or amounts,  as the case may be, as the
managing  underwriter or  underwriters,  if any, or the Investors may reasonably
request  and   registered  in  such  names  as  the  managing   underwriter   or
underwriters,  if any, or the  Investors  may  request,  and,  within  three (3)
business  days  after  a  Registration   Statement  which  includes  Registrable
Securities is ordered effective by the SEC, the Company shall deliver, and shall
cause legal counsel  selected by the Company to deliver,  to the transfer  agent
for the Registrable  Securities (with copies to the Investors whose  Registrable
Securities  are included in such  Registration  Statement) an instruction in the
form attached  hereto as Exhibit 1 and an opinion of such counsel  substantially
in the form attached hereto as Exhibit 2.

                  p.  The  Company  shall  take  all  other  reasonable  actions
necessary to expedite and facilitate disposition by the Investors of Registrable
Securities pursuant to the Registration Statement.

         4.       OBLIGATIONS OF THE INVESTORS.

         In connection with the registration of the Registrable Securities,  the
Investors shall have the following obligations:

                  a. It shall be a condition precedent to the obligations of the
Company to complete the registration  pursuant to this Agreement with respect to
the  Registrable  Securities of a particular  Investor that such Investor  shall
furnish to the  Company  such  information  regarding  itself,  the  Registrable
Securities  held by it and the intended method of disposition of the Registrable
Securities held by it as shall be reasonably required to effect the registration
of such  Registrable  Securities  and shall execute such documents in connection
with such registration as the Company may reasonably request. At least three (3)
business  days prior to the first  anticipated  filing date of the  Registration
Statement, the Company shall notify each Investor of the information the Company
requires from each such Investor.

                  b.  Each  Investor,  by  such  Investor's  acceptance  of  the
Registrable  Securities,  agrees to  cooperate  with the  Company as  reasonably
requested by the Company in connection  with the  preparation  and filing of the
Registration Statement hereunder,  unless such Investor has

                                       10
<PAGE>

notified  the Company in writing of such  Investor's  election to exclude all of
such Investor's Registrable Securities from the Registration Statement.

                  c. In the event Investors  holding a  majority-in-interest  of
the Registrable  Securities  being  registered (with the approval of the Initial
Investors)  determine to engage the services of an  underwriter,  each  Investor
agrees  to  enter  into  and  perform  such  Investor's   obligations  under  an
underwriting  agreement,  in  usual  and  customary  form,  including,   without
limitation,  customary  indemnification and contribution  obligations,  with the
managing  underwriter  of such  offering  and take  such  other  actions  as are
reasonably  required in order to expedite or facilitate  the  disposition of the
Registrable Securities, unless such Investor has notified the Company in writing
of such  Investor's  election  to  exclude  all of such  Investor's  Registrable
Securities from the Registration Statement.

                  d. Each Investor  agrees that, upon receipt of any notice from
the Company of the happening of any event of the kind  described in Section 3(f)
or 3(g), such Investor will immediately  discontinue  disposition of Registrable
Securities  pursuant to the  Registration  Statement  covering such  Registrable
Securities  until such Investor's  receipt of the copies of the  supplemented or
amended  prospectus  contemplated by Section 3(f) or 3(g) and, if so directed by
the Company,  such Investor  shall deliver to the Company (at the expense of the
Company) or destroy (and deliver to the Company a  certificate  of  destruction)
all  copies in such  Investor's  possession,  of the  prospectus  covering  such
Registrable Securities current at the time of receipt of such notice.

                  e.  No   Investor   may   participate   in  any   underwritten
registration  hereunder  unless such Investor (i) agrees to sell such Investor's
Registrable Securities on the basis provided in any underwriting arrangements in
usual and  customary  form  entered  into by the  Company,  (ii)  completes  and
executes  all  questionnaires,  powers of  attorney,  indemnities,  underwriting
agreements  and  other  documents  reasonably  required  under the terms of such
underwriting  arrangements,  and (iii)  agrees to pay its pro rata  share of all
underwriting  discounts  and  commissions  and any  expenses  in excess of those
payable by the Company pursuant to Section 5 below.

         5.       EXPENSES OF REGISTRATION.

         All  reasonable  expenses,   other  than  underwriting   discounts  and
commissions,   incurred   in   connection   with   registrations,   filings   or
qualifications pursuant to Sections 2 and 3, including,  without limitation, all
registration,  listing and qualification fees, printers and accounting fees, the
fees and  disbursements of counsel for the Company,  and the reasonable fees and
disbursements  of one  counsel  selected by the  Initial  Investors  pursuant to
Sections 2(b) and 3(h) hereof shall be borne by the Company.

                                       11
<PAGE>

      6. INDEMNIFICATION.

         In the event any Registrable  Securities are included in a Registration
Statement under this Agreement:

                  a. To the extent permitted by law, the Company will indemnify,
hold  harmless  and  defend  (i)  each  Investor  who  holds  such   Registrable
Securities, (ii) the directors,  officers, partners,  employees, agents and each
person who  controls  any  Investor  within  the  meaning of the 1933 Act or the
Securities  Exchange Act of 1934, as amended (the "1934 Act"), if any, (iii) any
underwriter  (as  defined  in the  1933  Act)  for the  Investors,  and (iv) the
directors,  officers,  partners, employees and each person who controls any such
underwriter within the meaning of the 1933 Act or the 1934 Act, if any (each, an
"Indemnified  Person"),  against any joint or several losses,  claims,  damages,
liabilities  or expenses  (collectively,  together with actions,  proceedings or
inquiries by any regulatory or self-regulatory  organization,  whether commenced
or  threatened,  in respect  thereof,  "Claims") to which any of them may become
subject  insofar as such Claims  arise out of or are based upon:  (i) any untrue
statement  or alleged  untrue  statement  of a material  fact in a  Registration
Statement or the omission or alleged  omission to state  therein a material fact
required  to  be  stated  or  necessary  to  make  the  statements  therein  not
misleading;  (ii) any untrue statement or alleged untrue statement of a material
fact contained in any preliminary prospectus if used prior to the effective date
of such Registration Statement, or contained in the final prospectus (as amended
or  supplemented,  if the  Company  files any  amendment  thereof or  supplement
thereto with the SEC) or the omission or alleged  omission to state  therein any
material fact  necessary to make the  statements  made therein,  in light of the
circumstances  under which the statements therein were made, not misleading;  or
(iii) any  violation  or alleged  violation  by the Company of the 1933 Act, the
1934 Act, any other law,  including,  without  limitation,  any state securities
law, or any rule or regulation  thereunder  relating to the offer or sale of the
Registrable  Securities (the matters in the foregoing  clauses (i) through (iii)
being,  collectively,  "Violations").  Subject to the  restrictions set forth in
Section  6(c) with  respect to the number of legal  counsel,  the Company  shall
reimburse the Indemnified Person, promptly as such expenses are incurred and are
due and payable,  for any  reasonable  legal fees or other  reasonable  expenses
incurred by them in connection with  investigating  or defending any such Claim.
Notwithstanding  anything to the contrary contained herein, the  indemnification
agreement contained in this Section 6(a): (i) shall not apply to a Claim arising
out of or based upon a Violation which occurs in reliance upon and in conformity
with information  furnished in writing to the Company by any Indemnified  Person
or underwriter for such Indemnified  Person expressly for use in connection with
the preparation of the Registration  Statement or any such amendment  thereof or
supplement  thereto, if such prospectus was timely made available by the Company
pursuant  to  Section  3(c)  hereof;  (ii)  shall not apply to  amounts  paid in
settlement of any Claim if such settlement is effected without the prior written
consent of the Company,  which consent shall not be unreasonably  withheld;  and
(iii) with respect to any preliminary prospectus, shall not inure to the benefit
of any Indemnified  Person if the untrue  statement or omission of material fact
contained in the  preliminary  prospectus was corrected on a timely basis in the
prospectus, as then amended or supplemented, such corrected

                                       12
<PAGE>

prospectus  was timely made  available  by the Company  pursuant to Section 3(c)
hereof,  and the Indemnified  Person was promptly  advised in writing not to use
the  incorrect  prospectus  prior to the use giving rise to a Violation and such
Indemnified Person,  notwithstanding  such advice, used it. Such indemnity shall
remain in full force and effect  regardless of any  investigation  made by or on
behalf  of  the  Indemnified  Person  and  shall  survive  the  transfer  of the
Registrable Securities by the Investors pursuant to Section 9.

                  b. In connection with any  Registration  Statement in which an
Investor is  participating,  each such Investor agrees severally and not jointly
to  indemnify,  hold  harmless  and  defend,  to the same extent and in the same
manner set forth in Section 6(a), the Company,  each of its  directors,  each of
its  officers who signs the  Registration  Statement,  each person,  if any, who
controls  the Company  within the  meaning of the 1933 Act or the 1934 Act,  any
underwriter  and  any  other  stockholder  selling  securities  pursuant  to the
Registration  Statement  or any of its  directors  or officers or any person who
controls such  stockholder or underwriter  within the meaning of the 1933 Act or
the  1934  Act  (collectively  and  together  with  an  Indemnified  Person,  an
"Indemnified Party"), against any Claim to which any of them may become subject,
under the 1933 Act, the 1934 Act or otherwise,  insofar as such Claim arises out
of or is based upon any Violation by such  Investor,  in each case to the extent
(and only to the extent)  that such  Violation  occurs in  reliance  upon and in
conformity  with written  information  furnished to the Company by such Investor
expressly for use in connection with such Registration Statement; and subject to
Section 6(c) such Investor will reimburse any legal or other expenses  (promptly
as such  expenses are incurred and are due and payable)  reasonably  incurred by
them in connection  with  investigating  or defending any such Claim;  provided,
however,  that the indemnity  agreement contained in this Section 6(b) shall not
apply to amounts paid in settlement of any Claim if such  settlement is effected
without the prior written  consent of such Investor,  which consent shall not be
unreasonably withheld;  provided,  further,  however, that the Investor shall be
liable under this Agreement (including this Section 6(b) and Section 7) for only
that amount as does not exceed the net proceeds to such  Investor as a result of
the sale of Registrable Securities pursuant to such Registration Statement. Such
indemnity shall remain in full force and effect  regardless of any investigation
made by or on behalf of such Indemnified Party and shall survive the transfer of
the   Registrable   Securities   by  the   Investors   pursuant  to  Section  9.
Notwithstanding  anything to the contrary contained herein, the  indemnification
agreement  contained  in this  Section  6(b)  with  respect  to any  preliminary
prospectus shall not inure to the benefit of any Indemnified Party if the untrue
statement or omission of material fact contained in the  preliminary  prospectus
was  corrected  on a  timely  basis  in  the  prospectus,  as  then  amended  or
supplemented.

                  c.  Promptly  after  receipt  by  an  Indemnified   Person  or
Indemnified  Party  under this  Section 6 of notice of the  commencement  of any
action  (including  any  governmental   action),   such  Indemnified  Person  or
Indemnified Party shall, if a Claim in respect thereof is to be made against any
indemnifying  party under this  Section 6, deliver to the  indemnifying  party a
written notice of the commencement  thereof,  and the  indemnifying  party shall
have the right to participate in, and, to the extent the  indemnifying  party so
desires, jointly with any other indemnifying party

                                       13
<PAGE>

similarly  noticed,  to assume  control  of the  defense  thereof  with  counsel
mutually  satisfactory to the indemnifying  party and the Indemnified  Person or
the  Indemnified  Party,  as  the  case  may  be;  provided,  however,  that  an
Indemnified  Person or Indemnified  Party shall have the right to retain its own
counsel with the fees and expenses to be paid by the indemnifying  party, if, in
the  reasonable  opinion of counsel  retained  by the  indemnifying  party,  the
representation  by such counsel of the Indemnified  Person or Indemnified  Party
and the  indemnifying  party would be  inappropriate  due to actual or potential
differing interests between such Indemnified Person or Indemnified Party and any
other party  represented by such counsel in such  proceeding.  The  indemnifying
party shall pay for only one separate legal counsel for the Indemnified  Persons
or the  Indemnified  Parties,  as  applicable,  and such legal  counsel shall be
selected  by  Investors  holding  a  majority-in-interest   of  the  Registrable
Securities  included in the  Registration  Statement to which the Claim  relates
(with the approval of a majority-in-interest  of the Initial Investors),  if the
Investors  are entitled to  indemnification  hereunder,  or the Company,  if the
Company is entitled to indemnification  hereunder, as applicable. The failure to
deliver written notice to the indemnifying party within a reasonable time of the
commencement of any such action shall not relieve such indemnifying party of any
liability to the Indemnified  Person or Indemnified  Party under this Section 6,
except to the extent that the indemnifying  party is actually  prejudiced in its
ability to defend such action.  The  indemnification  required by this Section 6
shall be made by periodic  payments of the amount  thereof  during the course of
the  investigation  or defense,  as such expense,  loss,  damage or liability is
incurred and is due and payable.

         7.       CONTRIBUTION.

         To  the  extent  any   indemnification  by  an  indemnifying  party  is
prohibited or limited by law, the indemnifying  party agrees to make the maximum
contribution  with respect to any amounts for which it would otherwise be liable
under Section 6 to the fullest extent permitted by law; provided,  however, that
(i) no contribution shall be made under  circumstances where the maker would not
have been  liable for  indemnification  under the fault  standards  set forth in
Section  6, (ii) no  seller  of  Registrable  Securities  guilty  of  fraudulent
misrepresentation (within the meaning of Section 11(f) of the 1933 Act) shall be
entitled to contribution  from any seller of Registrable  Securities who was not
guilty of such fraudulent  misrepresentation,  and (iii) contribution  (together
with any  indemnification  or other  obligations  under this  Agreement)  by any
seller of Registrable Securities shall be limited in amount to the net amount of
proceeds received by such seller from the sale of such Registrable Securities.

         8.       REPORTS UNDER THE 1934 ACT.

         With a view to making  available to the  Investors the benefits of Rule
144  promulgated  under the 1933 Act or any other  similar rule or regulation of
the SEC that may at any time  permit the  investors  to sell  securities  of the
Company to the public without registration ("Rule 144"), the Company agrees to:

                                       14
<PAGE>

                  a. make and keep public information available,  as those terms
are understood and defined in Rule 144;

                  b. file with the SEC in a timely  manner all reports and other
documents required of the Company under the 1933 Act and the 1934 Act so long as
the Company  remains  subject to such  requirements  (it being  understood  that
nothing herein shall limit the Company's  obligations  under Section 4(c) of the
Securities  Purchase  Agreement)  and the  filing  of  such  reports  and  other
documents is required for the applicable provisions of Rule 144; and

                  c.  furnish to each  Investor  so long as such  Investor  owns
Registrable  Securities,  promptly upon request,  (i) a written statement by the
Company that it has complied  with the reporting  requirements  of Rule 144, the
1933 Act and the 1934 Act,  (ii) a copy of the most recent  annual or  quarterly
report of the  Company  and such other  reports  and  documents  so filed by the
Company,  and (iii) such other  information  as may be  reasonably  requested to
permit  the  Investors  to sell such  securities  pursuant  to Rule 144  without
registration.

         9.       ASSIGNMENT OF REGISTRATION RIGHTS.

         The rights under this Agreement  shall be  automatically  assignable by
the Investors to any transferee of all or any portion of Registrable  Securities
if: (i) the Investor agrees in writing with the transferee or assignee to assign
such rights,  and a copy of such  agreement is furnished to the Company within a
reasonable time after such assignment,  (ii) the Company is, within a reasonable
time after such transfer or assignment, furnished with written notice of (a) the
name and address of such  transferee or assignee,  and (b) the  securities  with
respect to which such  registration  rights are being  transferred  or assigned,
(iii)  following  such transfer or assignment,  the further  disposition of such
securities by the  transferee  or assignee is restricted  under the 1933 Act and
applicable  state  securities  laws,  (iv) at or  before  the time  the  Company
receives the written notice  contemplated  by clause (ii) of this sentence,  the
transferee or assignee  agrees in writing with the Company to be bound by all of
the  provisions  contained  herein,  (v) such  transfer  shall have been made in
accordance  with  the  applicable   requirements  of  the  Securities   Purchase
Agreement,  and (vi) such transferee  shall be an "accredited  investor" as that
term defined in Rule 501 of Regulation D promulgated under the 1933 Act.

         10.      AMENDMENT OF REGISTRATION RIGHTS.

         Provisions of this Agreement may be amended and the observance  thereof
may  be  waived  (either  generally  or  in a  particular  instance  and  either
retroactively or prospectively),  only with written consent of the Company, each
of the  Initial  Investors  (to the  extent  such  Initial  Investor  still owns
Registrable  Securities)  and  Investors  who hold a  majority  interest  of the
Registrable Securities. Any amendment or waiver effected in accordance with this
Section 10 shall be binding upon each Investor and the Company.

                                       15
<PAGE>

         11.      MISCELLANEOUS.

                  a. A person or entity is deemed to be a holder of  Registrable
Securities  whenever  such  person or entity  owns of  record  such  Registrable
Securities.  If  the  Company  receives  conflicting  instructions,  notices  or
elections  from  two or more  persons  or  entities  with  respect  to the  same
Registrable  Securities,  the Company shall act upon the basis of  instructions,
notice  or  election  received  from the  registered  owner of such  Registrable
Securities.

                  b. Any  notices  required or  permitted  to be given under the
terms  hereof  shall be sent by certified  or  registered  mail (return  receipt
requested)  or  delivered  personally  or by  courier  (including  a  recognized
overnight  delivery  service) or by facsimile  and shall be effective  five days
after being placed in the mail, if mailed by regular U.S. mail, or upon receipt,
if delivered personally or by courier (including a recognized overnight delivery
service) or by facsimile,  in each case addressed to a party.  The addresses for
such communications shall be:




         If to the Company:

         Sigma Designs, Inc.
         46501 Landing Parkway
         Fremont, California  94538
         Attention: Chief Executive Officer
         Facsimile:  (510) 770-2640

         With copy to:

         Wilson Sonsini Goodrich & Rosati,
         Professional Corporation
         650 Page Mill Road
         Palo Alto, California  94304
         Attention:  David Segre
                        Stephen Diamond



If to an Investor:  to the address set forth  immediately  below such Investor's
name on the signature pages to the Securities Purchase Agreement.

                                       16
<PAGE>

                  c.  Failure of any party to exercise any right or remedy under
this  Agreement or otherwise,  or delay by a party in  exercising  such right or
remedy, shall not operate as a waiver thereof.

                  d. This Agreement shall be enforced, governed by and construed
in accordance with the laws of the State of California  applicable to agreements
made and to be  performed  entirely  within  such  State.  In the event that any
provision of this  Agreement is invalid or  unenforceable  under any  applicable
statute or rule of law, then such provision  shall be deemed  inoperative to the
extent that it may conflict  therewith  and shall be deemed  modified to conform
with such statute or rule of law. Any  provision  hereof which may prove invalid
or unenforceable  under any law shall not affect the validity or  enforceability
of any other provision hereof.

                  e.  This  Agreement  and  the  Securities  Purchase  Agreement
(including all schedules and exhibits  thereto)  constitute the entire agreement
among the parties  hereto with respect to the subject matter hereof and thereof.
There are no  restrictions,  promises,  warranties or  undertakings,  other than
those set forth or  referred  to herein  and  therein.  This  Agreement  and the
Securities  Purchase Agreement supersede all prior agreements and understandings
among the parties hereto with respect to the subject matter hereof and thereof.

                  f.  Subject  to the  requirements  of  Section 9 hereof,  this
Agreement  shall inure to the benefit of and be binding upon the  successors and
assigns of each of the parties hereto.

                  g. The  headings  in this  Agreement  are for  convenience  of
reference only and shall not limit or otherwise affect the meaning hereof.

                  h. This Agreement may be executed in two or more counterparts,
each of which shall be deemed an original but all of which shall  constitute one
and the same  agreement.  This  Agreement,  once  executed  by a  party,  may be
delivered to the other party hereto by facsimile  transmission of a copy of this
Agreement bearing the signature of the party so delivering this Agreement.

                  i. Each party  shall do and  perform,  or cause to be done and
performed,  all such further acts and things,  and shall execute and deliver all
such other  agreements,  certificates,  instruments and documents,  as the other
party may reasonably request in order to carry out the intent and accomplish the
purposes of this Agreement and the consummation of the transactions contemplated
hereby.

                  j. Except as otherwise provided herein, all consents and other
determinations  to be made by the Investors  pursuant to this Agreement shall be
made by Investors holding a majority of the Registrable  Securities,  determined
as if the all of the  shares  of  Preferred  Stock  then  outstanding  have been
converted into for Registrable Securities.

                                       17
<PAGE>

                  k. The language  used in this  Agreement  will be deemed to be
the language chosen by the parties to express their mutual intent,  and no rules
of strict construction will be applied against any party.

                  IN WITNESS  WHEREOF,  the Company and the undersigned  Initial
Investors  have caused this  Agreement to be duly  executed as of the date first
above written.


SIGMA DESIGNS, INC.


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



RGC INTERNATIONAL INVESTORS, LDC

By: Rose Glen Capital Management, L.P., Investment Manager
         By: RGC General Partner Corp., as General Partner


By:
   ---------------------------------------------------
         Wayne D. Bloch
         Managing Director



                                       18





                                                                     Exhibit 4.3

                         CERTIFICATE OF DETERMINATION OF

               PREFERENCES OF SERIES B CONVERTIBLE PREFERRED STOCK

                               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 Five Thousand (5,000) shares of
Series B Preferred Stock.

         3. None of  the  shares  of  the  Series B  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 previously  issued  Forty-Five  Thousand
(45,000)  shares of Preferred  Stock  designated as Series A Preferred Stock and
the Board of Directors  of this  Corporation  desires to  determine  the rights,
preferences,  privileges,  and  restrictions  relating  to this  new  series  of
Preferred  Stock,  and the  number of shares  constituting  said  Series and the
designation of said series;
<PAGE>






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

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

                  1. Rank. The Series B Preferred  Stock shall rank (i) prior to
the  Corporation's  common stock,  no par value per share (the "Common  Stock");
(ii) prior to any class or series of capital stock of the Corporation  hereafter
created  (unless,  with the consent of the  holders of Series B Preferred  Stock
obtained in  accordance  with Section 8 hereof,  such class or series of capital
stock specifically,  by its terms, ranks senior to the Series B Preferred Stock)
(collectively,  with the Common Stock,  "Junior  Securities");  (iii) pari passu
with the Series A  Preferred  Stock and any class or series of capital  stock of
the Corporation  hereafter created specifically ranking, by its terms, on parity
with the Series B Preferred Stock ("Pari Passu Securities");  and (iv) junior to
any class or series of capital stock of the Corporation  hereafter created (with
the consent of the holders of Series B Preferred  Stock  obtained in  accordance
with Section 8 hereof) specifically  ranking, by its terms, senior to the Series
B Preferred  Stock ("Senior  Securities"),  in each case as to  distribution  of
assets upon liquidation,  dissolution or winding up of the Corporation,  whether
voluntary or involuntary.

                  2. Dividends  Rights.  The Series B Preferred  Stock shall not
bear any dividends.  In no event,  so long as any Series B Preferred Stock shall
remain outstanding,  shall any dividend whatsoever be declared or paid upon, nor
shall any distribution be made upon, any Junior Securities, nor shall any shares
of Junior  Securities be purchased or redeemed by the  Corporation nor shall any
moneys be paid to or made  available  for a  sinking  fund for the  purchase  or
redemption  of any  Junior  Securities  (other  than a  distribution  of  Junior
Securities), without, in each such case, the written consent of the holders of a
majority of the outstanding shares of Series B Preferred Stock,  voting together
as a class.  The  stated  value of the  Series B  Preferred  Stock  shall be one
Thousand Dollars ($1,000) per share (the "Stated Value").

                                        2
<PAGE>

                  3.  Voting Rights.

                           (a) The holders of the Series B Preferred  Stock have
no voting  power  whatsoever,  except as  otherwise  provided by the  California
General Corporation Law ("CAGCL"), in this Section 3, and in Section 8 below.

                           (b)  Notwithstanding the above, the Corporation shall
provide each holder of Series B Preferred  Stock with prior  notification of any
meeting of the shareholders (and copies of proxy materials and other information
sent to shareholders). In the event of any taking by the Corporation of a record
of its shareholders for the purpose of determining shareholders who are entitled
to receive payment of any dividend or other distribution, any right to subscribe
for, purchase or otherwise acquire (including by way of merger, consolidation or
recapitalization) any share of any class or any other securities or property, or
to receive any other right, or for the purpose of determining  shareholders  who
are entitled to vote in connection  with any proposed sale,  lease or conveyance
of all or substantially  all of the assets of the  Corporation,  or any proposed
liquidation, dissolution or winding up of the Corporation, the Corporation shall
mail a notice to each  holder,  at least ten (10) days prior to the record  date
specified  therein  (or  thirty  (30)  days  prior  to the  consummation  of the
transaction  or  event,  whichever  is  earlier),  of the date on which any such
record is to be taken for the purpose of such dividend,  distribution,  right or
other event,  and a brief  statement  regarding the amount and character of such
dividend, distribution, right or other event to the extent known at such time.

                           (c) To the  extent  that  under the CAGCL the vote of
the holders of the Series B Preferred  Stock,  voting  separately  as a class or
series  as  applicable,   is  required  to  authorize  a  given  action  of  the
Corporation,  the  affirmative  vote or  consent  of the  holders  of at least a
majority of the shares of the Series B  Preferred  Stock  represented  at a duly
held meeting at which a quorum is present or by written consent of a majority of
the shares of Series B  Preferred  Stock  (except as  otherwise  may be required
under the CAGCL) shall  constitute the approval of such action by the class.  To
the extent  that under the CAGCL  holders  of the Series B  Preferred  Stock are
entitled to vote on a matter with holders of Common  Stock,  voting  together as
one class,  each share of Series B Preferred Stock shall be entitled to a number
of votes  equal to the  number of shares of Common  Stock  into which it is then
convertible using the record date for the taking of such vote of shareholders as
the date as of which the Conversion Price is calculated. Holders of the Series B
Preferred  Stock  shall be  entitled  to notice of all  shareholder  meetings or
written  consents (and copies of proxy materials and other  information  sent to
shareholders) with respect to which they would be entitled to vote, which notice
would be provided pursuant to the Corporation's bylaws and the CAGCL.

                                        3
<PAGE>
                       4.  Liquidation Preference, Dissolution or Winding Up.

                           (a) If the  Corporation  shall  commence a  voluntary
case under the Federal  bankruptcy laws or any other applicable Federal or State
bankruptcy,  insolvency  or similar law, or consent to the entry of an order for
relief in an involuntary case under any law or to the appointment of a receiver,
liquidator,   assignee,  custodian,  trustee,  sequestrator  (or  other  similar
official) of the Corporation or of any substantial part of its property, or make
an  assignment  for the  benefit  of its  creditors,  or  admit in  writing  its
inability to pay its debts generally as they become due, or if a decree or order
for  relief in  respect of the  Corporation  shall be entered by a court  having
jurisdiction in the premises in an involuntary case under the Federal bankruptcy
laws or any other applicable Federal or state bankruptcy,  insolvency or similar
law resulting in the appointment of a receiver, liquidator, assignee, custodian,
trustee,  sequestrator (or other similar  official) of the Corporation or of any
substantial  part of its property,  or ordering the winding up or liquidation of
its affairs,  and any such decree or order shall be unstayed and in effect for a
period of thirty (30)  consecutive  days and, on account of any such event,  the
Corporation  shall liquidate,  dissolve or wind up, or if the Corporation  shall
otherwise  liquidate,  dissolve or wind up (each such event being  considered  a
"Liquidation Event"), no distribution shall be made to the holders of any shares
of  capital  stock  of the  Corporation  (other  than  Senior  Securities)  upon
liquidation,  dissolution or winding up unless,  prior  thereto,  the holders of
shares of Series B Preferred  Stock,  subject to Section 6, shall have  received
the  Liquidation  Preference  (as defined in Section  4(c)) with respect to each
share.  If upon the  occurrence  of a  Liquidation  Event,  the assets and funds
available for distribution among the holders of the Series B Preferred Stock and
holders of Pari Passu  Securities shall be insufficient to permit the payment to
such holders of the preferential amounts payable thereon, then the entire assets
and funds of the Corporation  legally available for distribution to the Series B
Preferred Stock and the Pari Passu Securities shall be distributed ratably among
such shares in proportion to the ratio that the Liquidation  Preference  payable
on each such share bears to the aggregate liquidation  preference payable on all
such shares.

                           (b) So long as no shares of Series A Preferred  Stock
are  outstanding,  at the option of any holder of Series B Preferred  Stock, (i)
the sale, conveyance or disposition of all or substantially all of the assets of
the  Corporation,  (ii) the  effectuation by the Corporation of a transaction or
series of related transactions in which more than 50% of the voting power of the
Corporation is disposed of, or (iii) the consolidation, merger or other business
combination of the Corporation  with or into any other Person (as defined below)
or Persons in which the  Corporation is not the survivor,  shall either:  (x) be
deemed  to be a  liquidation,  dissolution  or  winding  up of  the  Corporation
pursuant  to  which  the  Corporation  shall  be  required  to  distribute  upon
consummation  of such  transaction  an amount  equal to 115% of the  Liquidation
Preference with respect to each outstanding share of Series B Preferred Stock in
accordance  with and  subject  to the terms of this  Section 4 or (y) be treated
pursuant to Section 6(e)(ii) below; provided, however, that no such distribution
pursuant to clause (x) above will be  available  and such event will be

                                       4
<PAGE>

required  to be treated  pursuant  to clause (y)  above,  where (i) the  Company
undertakes  such an event and plans to account  for such event as a "pooling  of
interests" in accordance with generally accepted accounting principles; and (ii)
the value of the distribution  that would have been received  pursuant to clause
(x)  above  would be less  than the  value of the  Common  Stock  that  would be
received  upon  conversion of the Series B Preferred  Stock in  accordance  with
Section  6  below  (treating  the  Trading  Day (as  defined  in  Section  6(d))
immediately preceding the date of such distribution as the "Conversion Date" (as
defined in Section  6(d)(i)).  "Person" shall mean any individual,  corporation,
limited liability company,  partnership,  association,  trust or other entity or
organization.

                           (c) For purposes hereof, the "Liquidation Preference"
with  respect to a share of the Series B  Preferred  Stock  shall mean an amount
equal to the sum of (i) Stated Value thereof, plus (ii) an amount equal to three
percent (3%) per annum of such Stated Value for the period beginning on the date
of  issuance of such share and ending on the date of final  distribution  to the
holder  thereof  (pro rated for any  portion of such  period).  The  liquidation
preference  with respect to any Pari Passu  Securities  shall be as set forth in
the Certificate of Determination filed in respect thereof.


                       5.  Redemption.

                           (a)  If  any  of  the  following   events  (each,   a
"Mandatory Redemption Event") shall occur:

                                    (i) The Corporation fails to issue shares of
Common  Stock to the  holders of Series B Preferred  Stock upon  exercise by the
holders  of  their  conversion  rights  in  accordance  with  the  terms of this
Certificate of  Determination  (for a period of at least sixty (60) days if such
failure  is solely  as a result  of the  circumstances  governed  by the  second
paragraph of Section 6(g) below and the  Corporation  is using all  commercially
reasonable efforts to authorize a sufficient number of shares of Common Stock as
soon as  practicable),  fails to  transfer  or to cause  its  transfer  agent to
transfer  (electronically or in certificated form) any certificate for shares of
Common  Stock issued to the holders  upon  conversion  of the Series B Preferred
Stock  as  and  when  required  by  this  Certificate  of  Determination  or the
Registration  Rights  Agreement,  dated as of January 30, 1998, by and among the
Corporation  and  the  other  signatories  thereto  (the  "Registration   Rights
Agreement"),  fails to remove any  restrictive  legend (or to withdraw  any stop
transfer  instructions  in respect  thereof) on any certificate or any shares of
Common Stock issued to the holders of Series B Preferred  Stock upon  conversion
of the Series B  Preferred  Stock as and when  required by this  Certificate  of
Determination,  the Securities  Purchase Agreement dated as of January 30, 1998,
by and between the Corporation and the other signatories  thereto (the "Purchase
Agreement")  or the  Registration  Rights  Agreement,  or fails to  fulfill  its
obligations  pursuant to Sections 4(c),  4(e),  4(h),  4(j) or 5 of the Purchase
Agreement  (or 

                                       5
<PAGE>

makes any announcement, statement or threat that it does not intend to honor the
obligations  described in this  paragraph)  and any such failure shall  continue
uncured (or any  announcement,  statement or threat not to honor its obligations
shall not be rescinded in writing) for ten (10) business days;

                                    (ii)  The   Corporation   fails  to   obtain
effectiveness  with the  Securities and Exchange  Commission  (the "SEC") of the
Registration  Statement (as defined in the Registration  Rights Agreement) prior
to July 31,  1998 or such  Registration  Statement  lapses in  effect  (or sales
otherwise cannot be made thereunder,  whether by reason of the Company's failure
to amend or supplement the prospectus  included  therein in accordance  with the
Registration  Rights  Agreement  or  otherwise  for more  than  forty-five  (45)
consecutive  days or sixty (60) days in any twelve (12) month  period after such
Registration Statement becomes effective; or

                                    (iii) The Corporation shall fail to maintain
the listing of the Common Stock on the Nasdaq  National Market  ("Nasdaq"),  the
Nasdaq  SmallCap  Market,  the New York Stock  Exchange  or the  American  Stock
Exchange and such failure shall remain uncured for at least ten (10) days,

then,  upon  the  occurrence  and  during  the  continuation  of  any  Mandatory
Redemption  Event  at the  option  of the  holders  of a  majority  of the  then
outstanding  shares of Series B Preferred Stock by written notice (the "Series B
Shareholder  Notice") to the Corporation of such Mandatory  Redemption Event, so
long as no share of Series A Preferred  Stock is  outstanding,  the  Corporation
shall  purchase each holder's  shares of Series B Preferred  Stock for an amount
per share equal to the greater of (1) 115% multiplied by the Stated Value of the
shares to be redeemed,  and (2) the "parity value" of the shares to be redeemed,
where  parity  value means the  product of (a) the  maximum  number of shares of
Common Stock issuable upon  conversion of such shares in accordance with Section
6 below  (without  giving any effect to any  limitations on conversion of shares
set forth in  Sections  6(a) or 6(b)  below,  and  treating  the Trading Day (as
defined in Section 6(d)) immediately  preceding the date of payment of Mandatory
Redemption Amount (the "Mandatory Redemption Date") as the "Conversion Date" (as
defined in Section  6(d)(i)) unless the Mandatory  Redemption  Event arises as a
result of a breach in respect of a specific  Conversion  Date in which case such
Conversion  Date shall be the  Conversion  Date),  multiplied by (b) the Closing
Price (as defined in Section 6(d) for the Common Stock on such "Conversion Date"
(the  greater of such amounts  being  referred to as the  "Mandatory  Redemption
Amount").  The  Mandatory  Redemption  Amount  payable to any holder of Series B
Preferred Stock shall be reduced,  dollar for dollar, by any Conversion  Default
Payments  previously paid to such holder pursuant to Sections  6(f)(ii) and 6(g)
and any payments  previously paid to such holder pursuant to Section 2(c) of the
Registration Rights Agreement.

                  If a Series B  Shareholder  Notice is sent to the  Corporation
while any share of Series A Preferred  Stock is  outstanding,  in lieu of paying
the  Mandatory  Redemption  Amount,  (i) the

                                       6
<PAGE>

Conversion Amount (as defined in Section 6(a)) shall equal the sum of the Stated
Value  plus the  Premium  Amount  (as  defined  in  Section  6(a))  and (ii) the
Applicable  Percentage  (as  defined  in  Section  6(d))  shall  be  reduced  in
accordance   with  the  proviso  set  forth  in  the  definition  of  Applicable
Percentage.

                  In  the  case  of  a  Mandatory   Redemption   Event,  if  the
Corporation  fails to pay the Mandatory  Redemption Amount for each share within
five (5)  business  days of written  notice that such amount is due and payable,
then (assuming there are sufficient  authorized shares) in addition to all other
available remedies, each holder of Series B Preferred Stock shall have the right
at any time, so long as the Mandatory Redemption Event continues, to require the
Corporation,  upon written notice,  to immediately issue (in accordance with and
subject to the terms of Section 6 below),  in lieu of the  Mandatory  Redemption
Amount,  with respect to each outstanding share of Series B Preferred Stock held
by such holder, the number of shares of Common Stock of the Corporation equal to
the Mandatory Redemption Amount divided by the Conversion Price then in effect.

                           (b) If the  Series B  Preferred  Stock  ceases  to be
convertible  as a result of the  limitations  described in Section 6(c) below (a
"19.99%  Redemption  Event"),  and the  Corporation  has not prior to, or within
thirty  (30) days of, the date that such 19.99%  Redemption  Event  arises,  (i)
obtained  approval of the issuance of the  additional  shares of Common Stock by
the  requisite  vote of the holders of the  then-outstanding  Common  Stock (not
including any shares of Common Stock held by present or former holders of Series
B Preferred Stock that were issued upon conversion of Series B Preferred  Stock)
or (ii)  received  other  permission  pursuant  to  Nasdaq  Requirement  4460(i)
allowing  the  Corporation  to resume  issuances  of shares of Common Stock upon
conversion of Series B Preferred Stock or the Corporation's  Common Stock is not
then listed on The Nasdaq Stock  Market or an exchange or quotation  system that
has a rule  substantially  similar to Rule 4460(i) of The Nasdaq  Stock  Market,
then the  Corporation  shall be  obligated to redeem,  out of the  Corporation's
funds legally available therefor, immediately all of the then outstanding Series
B  Preferred  Stock,  in  accordance  with this  Section  5(b).  An  irrevocable
Redemption  Notice  shall be  delivered  promptly  to the  holders  of  Series B
Preferred  Stock at their  registered  address  appearing  on the records of the
Corporation and shall state (1) that 19.99% of the Outstanding Common Amount (as
defined in Section 6(d)) has been issued upon exercise of the Series B Preferred
Stock,  (2) that the  Corporation is obligated to redeem all of the  outstanding
Series B Preferred Stock and (3) the Mandatory Redemption Date, which shall be a
date within ten (10) business days of the date of the Redemption  Notice. On the
Mandatory  Redemption Date, the Corporation  shall make payment of the Mandatory
Redemption Amount (as defined in Section 5(a) above) in cash.

                           (c) At any time  after  July  31,  1998  (the  "First
Optional Redemption Date"),  notwithstanding  anything to the contrary contained
in this  Section  5, so long as (i) no  Mandatory  Redemption  Event  shall have
occurred and be continuing,  (ii) the  Registration

                                       7
<PAGE>

Statement  is then in  effect  and has  been in  effect  and  sales  can be made
thereunder for at least twenty (20) days prior to the Optional  Redemption  Date
(as defined  below) and (iii) the Closing Bid Price (as defined in Section 6(b))
of the Common  Stock,  is greater  than 150% of the Fixed  Conversion  Price (as
defined in Section  6(d)(i))  for any twenty (20)  consecutive  Trading Days (as
defined below),  the Corporation  shall have the right,  exercisable on not less
than thirty (30) days prior written  notice to the holders of Series B Preferred
Stock  (which  notice may not be sent to the  holders of the Series B  Preferred
Stock prior to the First Optional  Redemption  Date),  to redeem the outstanding
shares of Series B Preferred  Stock in accordance  with this Section  5(c).  The
First Optional  Redemption Date shall be delayed by one (1) Trading Day each for
each Trading Day occurring prior thereto and prior to the full conversion of the
Series  B  Preferred  Stock  that  (i)  sales  cannot  be made  pursuant  to the
Registration  Statement  (whether by reason of the Company's failure to properly
supplement or amend the prospectus included therein in accordance with the terms
of the  Registration  Rights  Agreement  or  otherwise)  or (ii)  any  Mandatory
Redemption Event (as defined in Section 5(a)) exists,  without regard to whether
any cure  periods  shall  have run.  Any  notice  of  redemption  hereunder  (an
"Optional  Redemption")  shall be delivered to the holders of Series B Preferred
Stock at their  registered  addresses  appearing on the books and records of the
Corporation  and shall state (1) that the Corporation is exercising its right to
redeem the number of shares of Series B  Preferred  Stock  issued on the date of
issuance of such shares (the "Issue  Date") set forth in such notice and (2) the
date of redemption  (the "Optional  Redemption  Notice").  On the date fixed for
redemption (the "Optional  Redemption Date"), the Corporation shall make payment
of the Optional Redemption Amount (as defined below) to or upon the order of the
holders as specified by the holders in writing to the  Corporation  at least one
(1) business  day prior to the  Optional  Redemption  Date.  If the  Corporation
exercises  its right to redeem the Series B  Preferred  Stock,  the  Corporation
shall make payment to the holders of an amount in cash (the "Optional Redemption
Amount") equal to 100%  multiplied by the Stated Value of the shares of Series B
Preferred  Stock to be redeemed for each share of Series B Preferred  Stock then
held. Notwithstanding notice of an Optional Redemption, the holders shall at all
times prior to the Optional Redemption Date maintain the right to convert all or
any shares of Series B  Preferred  Stock in  accordance  with  Section 6 and any
shares of Series B Preferred  Stock so  converted  after  receipt of an Optional
Redemption  Notice and prior to the Optional  Redemption  Date set forth in such
notice and payment of the aggregate Optional Redemption Amount shall be deducted
from the  shares of Series B  Preferred  Stock  which are  otherwise  subject to
redemption  pursuant to such notice.  "Trading  Day" shall mean any day on which
the  Common  Stock is traded  for any  period  on  Nasdaq,  or on the  principal
securities exchange or other securities market on which the Common Stock is then
being traded.

                           (d)  Notwithstanding  anything  to  the  contrary  in
Section 6 below, subject to the terms of this Section 5(d), if the Closing Price
(as  defined  below) of the  Common  Stock is below 70% of the Fixed  Conversion
Price (as  defined in Section  6(d)(i))  on any day a Notice of  Conversion  (as
defined in Section 6(f) below) is given, the Corporation  shall have the option,
in lieu of issuing  shares of Common  Stock to the holders  upon  conversion  in
accordance  with the

                                       8
<PAGE>

terms of Section (f) below, to redeem all or any portion of the shares of Series
B Preferred  Stock  submitted for  conversion for an amount in cash equal to the
number of shares of Common  Stock that would have  otherwise  been  issued  upon
conversion of the Series B Preferred  Stock at the applicable  Conversion  Price
(as defined in Section  6(d))  multiplied  by the  Redemption  Market  Price (as
defined herein).  "Redemption  Market Price" shall be equal to the Closing Price
of the Common Stock on the  Conversion  Date.  "Closing  Price," as of any date,
means the last sale price of the Common Stock on the Nasdaq  National  Market as
reported by Bloomberg  Financial  Markets or an equivalent,  reliable  reporting
service  mutually  acceptable  to and  hereafter  designated by the holders of a
majority  in  interest  of the  shares  of  Series  B  Preferred  Stock  and the
Corporation ("Bloomberg") or, if The Nasdaq National Market is not the principal
trading  market for such  security,  the last sale price of such security on the
principal securities exchange or trading market where such security is listed or
traded as reported by Bloomberg, or if the foregoing do not apply, the last sale
price of such security in the over-the-counter market on the electronic bulletin
board for such security as reported by  Bloomberg,  or, if no last sale price of
such security or in the over-the-counter market on the electronic bulletin board
for such security in any of the foregoing manners, the average of the bid prices
of any market  makers for such or security  as reported in the "pink  sheets" by
the National  quotation  Bureau,  Inc. If the Closing Price cannot be calculated
for such security on such date in the manner provided  above,  the Closing Price
shall be the fair market value as mutually determined by the Corporation and the
holders of a majority in  interest  of shares of Series B Preferred  Stock being
converted for which the calculation of the Closing Price is required in order to
determine the Conversion  Price of such Series B Preferred  Stock.  From time to
time  following  the Issue Date,  the holders may request  advance  notice as to
whether the  Corporation  will issue  shares of Common  Stock,  deliver  cash in
redemption  or any  combination  thereof  in  respect  of the shares of Series B
Preferred  Stock  submitted for  conversion  pursuant to Section 6. Such request
shall be made in  writing  and the  Corporation  shall  respond  in  writing  as
promptly  as  practicable  but  within two (2)  business  days of receipt of the
request.  The Corporation  will be bound by such response for a period of twenty
(20) Trading Days from the date of its response. A failure to respond within two
(2)  business  days shall be deemed to be an election to issue  Common  Stock on
conversion.  Any  redemption  amounts  payable  hereunder  shall  be paid to the
converting holder within two (2) Trading Days of the Conversion Date.

                           6. Conversion at the Option of the Holder.

                                    (a) Subject to the  conversion  schedule set
forth in Section  6(b)(i)  below,  each  holder of shares of Series B  Preferred
Stock may, at its option at any time and from time to time,  upon  surrender  of
the  certificates  therefor,  convert  any  or all of its  shares  of  Series  B
Preferred  Stock into Common Stock as follows (an "Optional  Conversion").  Each
share of Series B Preferred Stock shall be convertible into such number of fully
paid and  nonassessable  shares of Common Stock as is determined by dividing (1)
the Conversion Amount (as defined below),  by (2) the then effective  Conversion
Price (as defined below); provided,  however, that, unless the holder delivers a
waiver in accordance with the immediately following sentence, in no

                                       9
<PAGE>

event (other than  pursuant to the  Automatic  Conversion  (as defined  herein))
shall a holder of shares of Series B Preferred  Stock be entitled to convert any
such shares in excess of that number of shares upon  conversion of which the sum
of (x) the number of shares of Common Stock beneficially owned by the holder and
its  affiliates  (other  than  shares  of  Common  Stock  which  may  be  deemed
beneficially  owned  through the  ownership  of the  unconverted  portion of the
shares of Series B Preferred Stock) and (y) the number of shares of Common Stock
issuable  upon the  conversion  of the shares of Series B  Preferred  Stock with
respect to which the  determination  of this proviso is being made, would result
in beneficial  ownership by a holder and such  holder's  affiliates of more than
4.9% of the outstanding  shares of Common Stock.  For purposes of the proviso to
the immediately preceding sentence, (i) beneficial ownership shall be determined
in  accordance  with Section  13(d) of the  Securities  Exchange Act of 1934, as
amended, and Regulation 13D-G thereunder, except as otherwise provided in clause
(x) of such  proviso  and (ii) a holder  may  waive  the  limitations  set forth
therein by written notice to the  Corporation  upon not less than sixty-one (61)
days  prior  written  notice  (with  such  waiver  taking  effect  only upon the
expiration of such sixty-one (61) day notice period).  The  "Conversion  Amount"
shall equal the Stated Value; provided,  however, that if a Mandatory Redemption
Notice is sent while any share of Series A Preferred Stock is  outstanding,  the
Conversion  Amount  shall  equal the sum of (a) the Stated  Value,  plus (b) the
Premium Amount where the "Premium Amount" means the product of the Stated Value,
multiplied  by .08,  multiplied  by (N/365)  where "N" equals the number of days
elapsed  from the  Issue  Date to and  including  the  date  the last  Mandatory
Redemption Event ceased to occur prior to the Conversion Date (as defined below)
or, if a Mandatory  Redemption  Event is continuing on the Conversion  Date, the
Conversion Date.

                               (b)  Limitations on Conversion.

                                    (i)  Each  holder  of  shares  of  Series  B
Preferred Stock may convert only up to that  percentage of the aggregate  Stated
Value of all shares of Series B Preferred  Stock  received by such holder on the
Issue Date  specified  below  during the time  period  set forth  opposite  such
percentage.

                  Percentage                            Time Period

                              0%           1-180 days following the Issue Date
                           33.3%           181-210 days following the Issue Date
                           66.6%           211-240 days following the Issue Date
                            100%           241 days following the Issue Date

; provided,  however,  that the restrictions on conversion set forth above shall
not apply, to conversions taking place on any Conversion Date (as defined below)
(i) after April 30, 1998,  if on the  Conversion  Date the Closing  Price of the
Common  Stock is  greater  than or equal to (a) the Fixed  Conversion  Price (as
defined in Section  6(d)(i)) or (b) 120% times the then applicable

                                       10
<PAGE>

Market  Price (as  defined in Section  6(d)(i)) or (ii) on or after the date the
Corporation makes a public  announcement that it intends to merge or consolidate
with any other  corporation or sell or transfer  substantially all of the assets
of the  Corporation  or (iii) on or after the date any  person,  group or entity
(including the Corporation) publicly announces a tender offer to purchase 50% or
more of the  Corporation's  Common  Stock or  otherwise  publicly  announces  an
intention  to replace a majority  of the  Corporation's  Board of  Directors  by
waging a proxy battle or otherwise.

                                    (ii) In addition to the limitation set forth
in Section 6(b)(i) above, and notwithstanding  anything else contained herein to
the contrary,  the Company may prohibit  holders of shares of Series B Preferred
Stock from  converting any shares of Series B Preferred  Stock (the  "Conversion
Limitation")  for a  period  of  thirty  (30)  calendar  days  (the  "Conversion
Limitation  Period"),  provided  that the  Company  provides  each holder of the
Series B  Preferred  Stock with at least ten (10)  Trading  Days  prior  written
notice of its intent to exercise the  Conversion  Limitation.  The Company shall
have the right to exercise a Conversion  Limitation  only one time, and upon the
exercise  of the  Conversion  Limitation,  the  Fixed  Conversion  Price for all
conversions effected after the exercise of the Conversion Limitation shall equal
the lesser of (i) 110% times the  average of the  Closing Bid Prices (as defined
below) for the Common Stock for the five (5) Trading Days ending on the last day
of the Conversion  Limitation Period and (ii) 150% of the average of the Closing
Bid Prices for the Common  Stock for the five (5) Trading  Days ending  February
27,  1998.  "Closing  Bid Price"  means,  for any  security as of any date,  the
closing bid price on The Nasdaq  National Market as reported by Bloomberg or, if
The  Nasdaq  National  Market  is not the  principal  trading  market  for  such
security,  the closing bid price of such  security on the  principal  securities
exchange or trading  market where such  security is listed or traded as reported
by Bloomberg,  or if the  foregoing do not apply,  the closing bid price of such
security in the  over-the-counter  market on the  electronic  bulletin board for
such  security  as reported  by  Bloomberg,  or, if no closing bid price of such
security in the  over-the-counter  market on the  electronic  bulletin board for
such security or in any of the foregoing manners,  the average of the bid prices
of any market  makers for such  security or as reported in the "pink  sheets" by
the  National  quotation  Bureau,  Inc.  If the  Closing  Bid  Price  cannot  be
calculated  for such  security on such date in the manner  provided  above,  the
Closing Bid Price shall be the fair market value as mutually  determined  by the
Corporation  and the  holders of a majority  in  interest  of shares of Series B
Preferred  Stock being converted for which the calculation of the Trade Price is
required in order to determine the  Conversion  Price of such Series B Preferred
Stock.

                           (c) So long as the Common Stock is listed for trading
on Nasdaq or an  exchange  or  quotation  system  that has a rule  substantially
similar to Rule 4460(i) then, notwithstanding anything to the contrary contained
herein  if, at any time,  the  aggregate  number of shares of Common  Stock then
issued upon conversion of the Series B Preferred Stock  (including any shares of
capital  stock or  rights  to  acquire  shares of  capital  stock  issued by the
Corporation  which are aggregated or integrated  with the Common Stock issued or
issuable upon  conversion  of the Series B Preferred  Stock for purposes of such
rule  described  below) equals  19.99% of the

                                       11
<PAGE>

"Outstanding  Common Amount" (as  hereinafter  defined),  the Series B Preferred
Stock shall,  from that time forward,  cease to be convertible into Common Stock
in  accordance  with the terms of this Section 6(a) and Section 7 below,  unless
the  Corporation  (i) has obtained  approval of the issuance of the Common Stock
upon conversion of the Series B Preferred Stock by a majority of the total votes
cast  on  such  proposal,  in  person  or  by  proxy,  by  the  holders  of  the
then-outstanding  Common Stock (not including any shares of Common Stock held by
present or former  holders of Series B  Preferred  Stock that were  issued  upon
conversion of Series B Preferred Stock),  or (ii) shall have otherwise  obtained
permission  to allow  such  issuances  from  Nasdaq in  accordance  with  Nasdaq
Requirement 4460(i) or the Corporation's  Common Stock is not then listed on the
Nasdaq  Stock  Market  or an  exchange  or  quotation  system  that  has a  rule
substantially  similar to Rule 4460(i) of The Nasdaq Stock Market.  For purposes
of this paragraph, "Outstanding Common Amount" means (i) the number of shares of
the Common Stock  outstanding  on the date of issuance of the Series B Preferred
Stock  pursuant to the Purchase  Agreement  plus (ii) any  additional  shares of
Common Stock  issued  thereafter  in respect of such shares  pursuant to a stock
dividend,  stock split or similar event.  The maximum number of shares of Common
Stock  issuable  as a result  of the  19.99%  limitation  set  forth  herein  is
hereinafter  referred to as the  "Maximum  Share  Amount."  With respect to each
holder of Series B Preferred Stock, the Maximum Share Amount shall refer to such
holder's pro rata share thereof  determined in accordance  with Section 9 below.
In the event that Corporation  obtains  Stockholder  Approval or the approval of
The Nasdaq Stock Market,  by reason of the  inapplicability  of the rules of The
Nasdaq Stock Market or otherwise and  concludes  that it is able to increase the
number of shares to be issued above the Maximum  Share  Amount  (such  increased
number being the "New Maximum Share  Amount"),  the  references to Maximum Share
Amount,  above,  shall be deemed to be,  instead,  references to the greater New
Maximum Share Amount.  In the event that  Stockholder  Approval is not obtained,
there are insufficient reserved or authorized shares or a registration statement
covering the additional  shares of Common Stock which constitute the New Maximum
Share Amount is not effective prior to the Maximum Share Amount being issued (if
such registration  statement is necessary to allow for the public resale of such
securities), the Maximum Share Amount shall remain unchanged; provided, however,
that the  Holder  may grant an  extension  to obtain a  sufficient  reserved  or
authorized  amount  of  shares  or of the  effective  date of such  registration
statement.  In the event that (a) the aggregate number of shares of Common Stock
issued pursuant to the outstanding  Series B Preferred Stock represents at least
twenty  percent  (20%) of the  Maximum  Share  Amount and (b) the sum of (x) the
aggregate  number of shares of Common Stock issued upon  conversion  of Series B
Preferred  Stock plus (y) the  aggregate  number of shares of Common  Stock that
remain issuable upon conversion of Series B Preferred Stock, represents at least
one hundred percent (100%) of the Maximum Share Amount (the "Triggering Event"),
the  Corporation  will  use its best  efforts  to seek  and  obtain  Stockholder
Approval  (or obtain such other  relief as will allow  conversions  hereunder in
excess  of the  Maximum  Share  Amount)  as soon as  practicable  following  the
Triggering Event and before the Mandatory Redemption Date.

                                       12
<PAGE>

                           (d)  Conversion  Price.  (i) Subject to  subparagraph
(ii) below,  the "Conversion  Price" shall be the lesser of the Market Price (as
defined herein) and the Fixed Conversion  Price (as defined herein),  subject to
adjustments  pursuant to the  provisions  of Section  6(e)  below.  Prior to the
determination of the Fixed  Conversion  Price, the Conversion Price shall be the
Market Price.  "Market Price" shall mean the  Applicable  Percentage (as defined
below)  times the average of the lowest six (6) daily Trade Prices of the Common
Stock,  during the twenty  (20)  Trading  Day period  ending one (1) Trading Day
prior to the date (the  "Conversion  Date") the  Conversion  Notice is sent by a
holder  to  the  Corporation  via  facsimile  (the  "Pricing  Period").   "Fixed
Conversion Price" shall mean 150% of the average Closing Bid Prices for the five
(5) Trading Days ending February 27, 1998. "Trade Price" means, for any security
as of any date,  the trade  price on The Nasdaq  National  Market as reported by
Bloomberg or, if The Nasdaq National Market is not the principal  trading market
for such security,  the trade price of such security on the principal securities
exchange or trading  market where such  security is listed or traded as reported
by Bloomberg, or if the foregoing do not apply, the trade price of such security
in the  over-the-counter  market  on the  electronic  bulletin  board  for  such
security as reported by Bloomberg, or, if no trade price of such security in the
over-the-counter market on the electronic bulletin board for such security or in
any of the  foregoing  manners,  the bid  price of any  market  makers  for such
security as reported in the "pink sheets" by the National quotation Bureau, Inc.
If the Trade Price cannot be  calculated  for such  security on such date in the
manner  provided  above,  the  Trade  Price  shall be the fair  market  value as
mutually determined by the Corporation and the holders of a majority in interest
of shares of Series B Preferred  Stock being converted for which the calculation
of the Trade Price is required in order to  determine  the  Conversion  Price of
such  Series  B  Preferred  Stock.  "Applicable  Percentage"  shall  mean  100%;
provided,  however,  that if,  while any share of  Series A  Preferred  Stock is
outstanding,  (a) there is a Mandatory  Redemption Event described in Paragraphs
5(a)(i) and 5(a)(ii),  the Applicable Percentage shall be permanently reduced to
80% and (b)  there  is a  Mandatory  Redemption  Event  described  in  paragraph
5(a)(iii) and the Applicable Percentage at such time equals 100%, the Applicable
Percentage shall be permanently  reduced to 90%, subject to adjustment  pursuant
to clause (a) of this proviso.

                           (ii)    Notwithstanding    anything    contained   in
subparagraph  (i) of  this  Paragraph  (d) to the  contrary,  in the  event  the
Corporation  (i) makes a public  announcement  that it intends to consolidate or
merge with any other  corporation  (other than a merger in which the Corporation
is the surviving or continuing  corporation  and its capital stock is unchanged)
or sell or transfer all or substantially all of the assets of the Corporation or
(ii) any person, group or entity (including the Corporation)  publicly announces
a tender  offer to purchase  50% or more of the  Corporation's  Common  Stock or
otherwise  publicly  announces  an  intention  to  replace  a  majority  of  the
corporation's Board of Directors by waging a proxy battle or otherwise (the date
of the announcement referred to in clause (i) or (ii) is hereinafter referred to
as the "Announcement Date"), then the Conversion Price shall, effective upon the
Announcement  Date  and  continuing   through  the  Adjusted   Conversion  Price
Termination Date (as defined below), be

                                       13
<PAGE>

equal to the lower of (x) the Conversion  Price which would have been applicable
for an  Optional  Conversion  occurring  on the  Announcement  Date  and (y) the
Conversion Price that would otherwise be in effect.  From and after the Adjusted
Conversion Price  Termination  Date, the Conversion Price shall be determined as
set  forth in  subparagraph  (i) of this  Section  6(d).  For  purposes  hereof,
"Adjusted  Conversion Price  Termination Date" shall mean the earlier of (x) one
hundred twenty (120) days from the Announcement  Date or (y) with respect to any
proposed  transaction,  tender  offer or removal of the majority of the Board of
Directors which a public  announcement as contemplated by this subparagraph (ii)
has been made,  the date upon which the  Corporation  (in the case of clause (i)
above)  or the  person,  group or  entity  (in the case of  clause  (ii)  above)
publicly announces the termination or abandonment of the proposed transaction or
tender offer which caused this subparagraph (ii) to become operative.

                           (e) Adjustments to Conversion  Price.  The Conversion
Price shall be subject to adjustment from time to time as follows:

                                    (i)  Adjustment to  Conversion  Price Due to
Stock Split,  Stock Dividend,  Etc. If at any time when Series B Preferred Stock
is issued and outstanding,  the number of outstanding  shares of Common Stock is
increased  or  decreased  by  a  stock  split,   stock  dividend,   combination,
reclassification,  rights  offering below the Average  Trading Price (as defined
below) to all holders of Common Stock or other similar event,  which event shall
have taken place during the reference period for determination of the Conversion
Price for any  Optional  Conversion  or  Automatic  Conversion  of the  Series B
Preferred  Stock,   then  the  Conversion  Price  shall  be  calculated   giving
appropriate   effect  to  the  stock   split,   stock   dividend,   combination,
reclassification  or other similar event. In such event,  the Corporation  shall
notify  the  Transfer  Agent of such  change on or  before  the  effective  date
thereof.  "Average Trading Price," which shall be measured as of the record date
in respect of the rights  offering  means (i) the  average of the last  reported
sale prices for the shares of Common  Stock on Nasdaq as reported by  Bloomberg,
as applicable, for the five (5) Trading Days immediately preceding such date, or
(ii) if Nasdaq is not the  principal  trading  market  for the  shares of Common
Stock,  the average of the last reported  sale prices on the  principal  trading
market for the Common Stock during the same period as reported by Bloomberg,  or
(iii)  if  market  value  cannot  be  calculated  as of such  date on any of the
foregoing  bases,  the Average  Trading  Price shall be the fair market value as
reasonably  determined  in good  faith  by (a) the  Board  of  Directors  of the
Corporation  or, (b) at the option of a  majority-in-interest  of the holders of
the outstanding  Series B Preferred  Stock by an independent  investment bank of
nationally  recognized  standing in the valuation of  businesses  similar to the
business of the Corporation.

                                    (ii)     Adjustment     Due    to    Merger,
Consolidation,  Etc. If, at any time when Series B Preferred Stock is issued and
outstanding and prior to the conversion of all Series B Preferred  Stock,  there
shall  be any  merger,  consolidation,  exchange  of  shares,  recapitalization,
reorganization,  or other similar  event,  as a result of which shares of Common
Stock of the

                                       14
<PAGE>

Corporation  shall be changed  into the same or a different  number of shares of
another class or classes of stock or securities  of the  Corporation  or another
entity,  or in case of any sale or conveyance of all or substantially all of the
assets of the  Corporation  other  than in  connection  with a plan of  complete
liquidation  of the  Corporation,  then the holders of Series B Preferred  Stock
shall  thereafter  have the right to  receive  upon  conversion  of the Series B
Preferred  Stock,  upon the bases and upon the  terms and  conditions  specified
herein  and in  lieu of the  shares  of  Common  Stock  immediately  theretofore
issuable upon conversion,  such stock, securities or assets which the holders of
Series B Preferred Stock would have been entitled to receive in such transaction
had the Series B Preferred  Stock been converted in full (without  regard to any
limitations  on  conversion   contained   herein)   immediately  prior  to  such
transaction,  and in any such  case  appropriate  provisions  shall be made with
respect to the rights and  interests of the holders of Series B Preferred  Stock
to the end that the provisions hereof (including, without limitation, provisions
for  adjustment  of the  Conversion  Price and of the number of shares of Common
Stock issuable upon conversion of the Series B Preferred Stock) shall thereafter
be applicable,  as nearly as may be practicable in relation to any securities or
assets  thereafter  deliverable upon the conversion of Series B Preferred Stock.
The Corporation shall not effect any transaction  described in this subparagraph
(ii) unless (a) it first gives, to the extent practical, thirty (30) days' prior
written  notice (but in any event at least ten (10)  business days prior written
notice) of such  merger,  consolidation,  exchange of shares,  recapitalization,
reorganization  or other similar event or sale of assets  (during which time the
holders of Series B  Preferred  Stock  shall be entitled to convert the Series B
Preferred Stock) and (b) the resulting successor or acquiring entity (if not the
Corporation)  assumes by written instrument the obligations of this subparagraph
(ii). The above provisions  shall similarly apply to successive  consolidations,
mergers, sales, transfers or share exchanges.

                                    (iii) Other Securities Offerings. If, at any
time after the original  date of issuance of the Series B Preferred  Stock,  the
Corporation  sells Common Stock or securities  convertible into, or exchangeable
for, Common Stock, other than (a) a sale pursuant to a bona fide firm commitment
underwritten public offering of Common Stock by the Corporation (not including a
continuous  offering  pursuant to Rule 415 under the  Securities Act of 1933, as
amended),  (b) the  issuance  of  securities  under any  Company  stock  option,
restricted  stock option or employee  stock purchase plan approved by a majority
of the Company's  disinterested  directors or as incentive related distributions
to employees  approved by a majority of the Company's  disinterested  directors,
(c) the issuance of securities in connection with equipment financing or (d) the
issuance  of  securities  in  connection  with  any  commercial  bank  financing
(collectively,  the "Other  Common  Stock"),  then,  if the effective or maximum
sales price of the Common Stock with respect to such transaction  (including the
effective or maximum conversion, or exchange price) ("Other Price") is less than
the effective  Conversion Price of the Series B Preferred Stock at such time and
such Other Common  Stock is eligible  for resale prior to January 30, 1999,  the
Corporation  shall  adjust  the  Conversion  Price  applicable  to the  Series B
Preferred Stock not yet converted in form and substance reasonably  satisfactory
to the  holders  of  Series  B  Preferred  Stock so that  the  Conversion

                                       15
<PAGE>

Price  applicable  to the Series B Preferred  Stock shall not, in any event,  be
greater, after giving effect to all other adjustments contained herein, than the
Other Price.

                                    (iv) Adjustment Due to Distribution. Subject
to Section 2, if the Corporation  shall declare or make any  distribution of its
assets (or rights to acquire its assets) to all holders of Common  Stock as of a
certain  date of record as a  dividend,  stock  repurchase,  by way of return of
capital  or  otherwise   (including   any  dividend  or   distribution   to  the
Corporation's  shareholders  in cash or shares (or rights to acquire  shares) of
capital stock of a subsidiary (i.e., a spin-off)) (a  "Distribution"),  then the
holders of Series B Preferred  Stock shall be entitled,  upon any  conversion of
shares of Series B  Preferred  Stock  after such date of record for  determining
shareholders entitled to such Distribution, to receive the amount of such assets
which would have been payable to the holder with respect to the shares of Common
Stock  issuable  upon such  conversion  had such  holder been the holder of such
shares of Common Stock on the record date for the  determination of shareholders
entitled to such Distribution.

                                    (v) Purchase Rights. Subject to Section 2 if
at any time when any Series B  Preferred  Stock is issued and  outstanding,  the
Corporation  issues any  convertible  securities  or rights to  purchase  stock,
warrants,  securities or other property (the "Purchase  Rights") pro rata to the
record  holders  of any  class of Common  Stock,  then the  holders  of Series B
Preferred Stock will be entitled to acquire,  upon the terms  applicable to such
Purchase  Rights,  the  aggregate  Purchase  Rights which such holder could have
acquired if such holder had held the number of shares of Common Stock acquirable
upon complete  conversion of the Series B Preferred Stock (without regard to any
limitations on conversion contained herein) immediately before the date on which
a record is taken for the grant,  issuance or sale of such Purchase Rights,  or,
if no such  record is taken,  the date as of which the record  holders of Common
Stock are to be determined for the grant, issue or sale of such Purchase Rights.

                                    (vi) Adjustment for Restricted  Periods.  In
the  event  that (1) the  Corporation  fails to  obtain  effectiveness  with the
Securities and Exchange Commission of the Registration  Statement (as defined in
the Registration Rights Agreement) prior to ninety (90) days following the Issue
Date, or (2) such  Registration  Statement lapses in effect,  or sales otherwise
cannot be made  thereunder,  whether by reason of the  Corporation's  failure or
inability to amend or supplement  the  prospectus  (the  "Prospectus")  included
therein in accordance with the Registration Rights Agreement or otherwise, after
such Registration Statement becomes effective,  then the Pricing Period shall be
comprised  of, (i) in the case of an event  described  in clause (1), the twenty
(20)  Trading  Days  preceding  the 90th day  following  the Issue Date plus all
Trading Days through and  including  the third Trading Day following the date of
effectiveness  of the Registration  Statement;  and (ii) in the case of an event
described in clause (2), the number of Trading Days  preceding the date on which
the holder of the Series B Preferred  Stock is first notified that sales may not
be made  under the  Prospectus  that would  otherwise  then be  included  in the
Pricing Period in accordance  with the  definition  thereof set forth in Section
6(d)(i),  plus all Trading  Days  through and  including  the third  Trading Day
following  the date on which the  Holder is first  notified  that such sales may
again be made  under the  Prospectus.  If a holder of Series B  Preferred  Stock
determines  that sales may not be made  pursuant to the  Prospectus  (whether by

                                       16
<PAGE>

reason of the  Corporation's  failure or  inability to amend or  supplement  the
Prospectus)  it shall so notify  the  Corporation  in  writing  and,  unless the
Corporation  provides  such holder with a written  opinion of the  Corporation's
counsel to the  contrary,  such  determination  shall be binding for purposes of
this paragraph.

                                    (vii)  Notice  of   Adjustments.   Upon  the
occurrence of each adjustment or  readjustment of the Conversion  Price pursuant
to this Section 6(e), the  Corporation,  at its expense,  shall promptly compute
such adjustment or readjustment and prepare and furnish to each holder of Series
B Preferred  Stock a certificate  setting forth such  adjustment or readjustment
and showing in detail the facts upon which such  adjustment or  readjustment  is
based. The Corporation shall, upon the written request at any time of any holder
of Series B Preferred Stock,  furnish to such holder a like certificate  setting
forth (i) such adjustment or readjustment, (ii) the Conversion Price at the time
in effect and (iii) the number of shares of Common Stock and the amount, if any,
of  other  securities  or  property  which at the time  would be  received  upon
conversion of a share of Series B Preferred Stock.

                           (f)  Mechanics  For  Conversion.  In order to convert
Series B Preferred  Stock into full shares of Common Stock, a holder of Series B
Preferred  Stock  shall:  (i)  submit a copy of the  fully  executed  notice  of
conversion in the form attached  hereto as Exhibit A ("Notice of Conversion") to
the  Corporation  by facsimile  dispatched on the  Conversion  Date (or by other
means  resulting in notice to the  Corporation  on the  Conversion  Date) at the
office of the  Corporation  or its  designated  Transfer  Agent for the Series B
Preferred  Stock that the holder elects to convert the same,  which notice shall
specify the number of shares of Series B Preferred  Stock to be  converted,  the
applicable  Conversion Price and a calculation of the number of shares of Common
Stock issuable upon such  conversion  (together with a copy of the first page of
each  certificate  to be converted)  prior to Midnight,  New York City time (the
"Conversion Notice Deadline") on the date of conversion  specified on the Notice
of Conversion;  and (ii) surrender the original  certificates  representing  the
Series B Preferred Stock being converted (the "Preferred  Stock  Certificates"),
duly  endorsed,  along with a copy of the Notice of  Conversion to the office of
the  Corporation or the Transfer Agent for the Series B Preferred  Stock as soon
as  practicable  thereafter.  The  Corporation  shall not be  obligated to issue
certificates   evidencing   the  shares  of  Common  Stock  issuable  upon  such
conversion,  unless either the Preferred Stock Certificates are delivered to the
Company or its  Transfer  Agent as provided  above,  or the holder  notifies the
Corporation or its Transfer Agent that such  certificates have been lost, stolen
or destroyed  (subject to the  requirements of subparagraph  (i) below).  In the
case of a dispute as to the calculation of the Conversion Price, the Corporation
shall promptly issue such number of shares of Common Stock that are not disputed
in accordance with  subparagraph  (ii) below.  The Corporation  shall submit the
disputed  calculations  to its outside  accountant via facsimile  within two (2)
business days of receipt of the Notice of Conversion. The accountant shall audit
the  calculations  and notify the  Corporation  and the holder of the results no
later  than  two (2)  business  days  from  the time it

                                       17
<PAGE>


receives the disputed calculations. The accountant's calculation shall be deemed
conclusive absent manifest error.

                                    (i)  Lost  or  Stolen   Certificates.   Upon
receipt by the  Corporation  of  evidence  of the loss,  theft,  destruction  or
mutilation of any Preferred Stock Certificates  representing  shares of Series B
Preferred  Stock,  and (in the case of loss,  theft or destruction) of indemnity
reasonably satisfactory to the Corporation,  and upon surrender and cancellation
of the Preferred  Stock  Certificate(s),  if mutilated,  the  Corporation  shall
execute and deliver new Preferred Stock Certificate(s) of like tenor and date.

                                    (ii)   Delivery   of   Common   Stock   Upon
Conversion.  Upon the surrender of certificates as described above together with
a Notice of  Conversion,  the  Corporation  shall  issue and,  within  three (3)
business days after such surrender (or, in the case of lost, stolen or destroyed
certificates,  after  provision of  agreement  and  indemnification  pursuant to
subparagraph (i) above) (the "Delivery Period"),  deliver (or cause its Transfer
Agent to so issue  and  deliver)  to or upon the  order of the  holder  (i) that
number  of shares of Common  Stock  for the  portion  of the  shares of Series B
Preferred Stock converted as shall be determined in accordance herewith and (ii)
a certificate representing the balance of the shares of Series B Preferred Stock
not  converted,  if any.  In  addition to any other  remedies  available  to the
holder,  including actual damages and/or equitable relief, the Corporation shall
pay to a holder  $1,000  per day in cash for each day beyond a two (2) day grace
period  following  the  Delivery  Period that the  Corporation  fails to deliver
Common  Stock (a  "Conversion  Default")  issuable  upon  surrender of shares of
Series B  Preferred  Stock  with a Notice of  Conversion  until such time as the
Corporation  has  delivered  all such  Common  Stock  (the  "Conversion  Default
Payments").  Such cash  amount  shall be paid to such holder by the fifth day of
the month  following  the month in which it has accrued or, at the option of the
holder  (by  written  notice  to the  Corporation  by the first day of the month
following the month in which it has accrued),  shall be convertible  into Common
Stock in  accordance  with the terms of this  Section 6. The  maximum  amount of
damages  payable by the  Corporation to all holders of Series B Preferred  Stock
pursuant to this paragraph 6(f)(ii) shall be $10,000.

                  In lieu of delivering physical  certificates  representing the
Common Stock issuable upon conversion, provided the Corporation's Transfer Agent
is  participating  in  the  Depository  Trust  Company  ("DTC")  Fast  Automated
Securities  Transfer  ("FAST")  program,  upon  request  of the  holder  and its
compliance with the provisions contained in Section 6(a)-(c) and in this Section
6(f), the Corporation  shall use its best efforts to cause its Transfer Agent to
electronically  transmit the Common Stock issuable upon conversion to the holder
by crediting  the account of holder's  Prime Broker with DTC through its Deposit
Withdrawal Agent Commission  ("DWAC") system.  The time periods for delivery and
penalties  described in the immediately  preceding  paragraph shall apply to the
electronic transmittals described herein.

                                       18
<PAGE>

                                    (iii)   No   Fractional   Shares.   If   any
conversion  of Series B Preferred  Stock would result in a  fractional  share of
Common Stock or the right to acquire a fractional  share of Common  Stock,  such
fractional  share shall be disregarded  and the number of shares of Common Stock
issuable  upon  Conversion  of the Series B  Preferred  Stock  shall be the next
higher number of shares.

                                    (iv) Conversion Date. The "Conversion  Date"
shall be the date  specified  in the  Notice of  Conversion,  provided  that the
Notice of Conversion  is submitted by facsimile (or by other means  resulting in
notice) to the Corporation or its Transfer Agent before Midnight,  New York City
time,  on the  Conversion  Date.  The person or persons  entitled to receive the
shares of  Common  Stock  issuable  upon  conversion  shall be  treated  for all
purposes as the record holder or holders of such securities as of the Conversion
Date and all  rights  with  respect to the  shares of Series B  Preferred  Stock
surrendered shall forthwith  terminate except the right to receive the shares of
Common Stock or other  securities or property  issuable on such  conversion  and
except  that the holders  preferential  rights as a holder of Series B Preferred
Stock  shall  survive  to the  extent  the  corporation  fails to  deliver  such
securities.

                           (g) Reservation of Stock Issuable Upon Conversion.  A
number of shares of the  authorized  but  unissued  Common Stock  sufficient  to
provide for the  conversion of the Series B Preferred  Stock  outstanding at the
then current Conversion Price shall at all times be reserved by the Corporation,
free from preemptive rights, for such conversion or exercise.  As of the date of
issuance of the Series B Preferred  Stock,  3,300,000  authorized  and  unissued
shares of Common Stock have been duly reserved for issuance  upon  conversion of
the Series B Preferred Stock (the "Reserved Amount").  The Reserved Amount shall
be increased  from time to time in  accordance  with the  Company's  obligations
pursuant  to  Section  4(h)  of the  Purchase  Agreement.  In  addition,  if the
Corporation  shall  issue  any  securities  or make any  change  in its  capital
structure  which  would  change the number of shares of Common  Stock into which
each share of the Series B  Preferred  Stock  shall be  convertible  at the then
current  Conversion  Price,  the  Corporation  shall at the same  time also make
proper provision so that thereafter there shall be a sufficient number of shares
of Common Stock  authorized  and  reserved,  free from  preemptive  rights,  for
conversion of the outstanding Series B Preferred Stock.

                  If at any time a holder of shares of Series B Preferred  Stock
submits a Notice of Conversion,  and the  Corporation  does not have  sufficient
authorized  but  unissued  shares  of Common  Stock  available  to  effect  such
conversion in accordance  with the  provisions of this Section 6 (a  "Conversion
Default"),  the Corporation shall issue to the holder (or holders,  if more than
one holder  submits a Notice of  Conversion  in  respect of the same  Conversion
Date,  pro rata  based on the  ratio  that the  number  of  shares  of  Series B
Preferred  Stock then held by each such holder bears to the aggregate  number of
such shares held by such  holders)  all of the shares of Common  Stock which are
available to effect such conversion.  The number of shares of Series B Preferred
Stock  included in the Notice of  Conversion  which  exceeds the amount which is
then

                                       19
<PAGE>

convertible  into available  shares of Common Stock (the "Excess Amount") shall,
notwithstanding  anything to the contrary  contained herein,  not be convertible
into Common Stock in accordance with the terms hereof until (and at the holder's
option  at any time  after)  the date  additional  shares  of  Common  Stock are
authorized  by the  Corporation  to permit  such  conversion,  at which time the
Conversion  Price in respect  thereof shall be the lesser of (i) the  Conversion
Price on the Conversion  Default Date (as defined below) and (ii) the Conversion
Price on the  Conversion  Date  elected by the holder in  respect  thereof.  The
Corporation  shall use its best efforts to effect an increase in the  authorized
number of shares of Common  Stock as soon as  possible  following  a  Conversion
Default.  In  addition,  the  Corporation  shall  pay  to  the  holder  payments
("Conversion  Default  Payments") for a Conversion  Default in the amount of (a)
(N/365),  multiplied by (b) the sum of the Stated Value plus the Premium  Amount
(if any) per share of Series B Preferred  Stock through the  Authorization  Date
(as defined  below),  multiplied  by (c) the Excess Amount on the day the holder
submits  a  Notice  of  Conversion  giving  rise to a  Conversion  Default  (the
"Conversion  Default Date"),  multiplied by (d) .20, where (i) N = the number of
days from the  Conversion  Default Date to the date (the  "Authorization  Date")
that the Corporation authorizes a sufficient number of shares of Common Stock to
effect  conversion of the full number of shares of Series B Preferred Stock. The
Corporation  shall send notice to the holder of the  authorization of additional
shares  of Common  Stock,  the  Authorization  Date and the  amount of  holder's
accrued Conversion Default Payments.  The accrued Conversion Default Payment for
each calendar  month shall be paid in cash or shall be  convertible  into Common
Stock at the Conversion Price, at the holder's option, as follows:

                                    (i) In the event the  holder  elects to take
such payment in cash,  cash payment  shall be made to holder by the fifth day of
the month following the month in which it has accrued; and

                                    (ii) In the event the holder  elects to take
such payment in Common  Stock,  the holder may convert such payment  amount into
Common Stock at the Conversion Price (as in effect at the time of Conversion) at
any time  after the fifth day of the month  following  the month in which it has
accrued in accordance with the terms of this Section 6 (so long as there is then
a sufficient number of authorized shares).

                  Nothing herein shall limit the holder's right to pursue actual
damages  for the  Corporation's  failure  to  maintain  a  sufficient  number of
authorized  shares of Common  Stock,  and each  holder  shall  have the right to
pursue  all  remedies  available  at law or in  equity  (including  a decree  of
specific performance and/or injunctive relief).

                           (h)  Upon  the  occurrence  of  each   adjustment  or
readjustment   of  the  Conversion   Price  pursuant  to  this  Section  6,  the
Corporation,   at  its  expense,  shall  promptly  compute  such  adjustment  or
readjustment in accordance with the terms hereof and prepare and furnish to each
holder of Series B Preferred  Stock a certificate  setting forth such adjustment
or

                                       20
<PAGE>

readjustment  and  showing in detail the facts  upon  which such  adjustment  or
readjustment is based.  The Corporation  shall,  upon the written request at any
time of any holder of Series B Preferred Stock, furnish or cause to be furnished
to  such  holder  a like  certificate  setting  forth  (i)  such  adjustment  or
readjustment,  (ii) the  Conversion  Price at the time in  effect  and (iii) the
number of shares of Common Stock and the amount,  if any, of other securities or
property  which at the time  would be  received  upon  conversion  of a share of
Series B Preferred Stock.

                           (i)  Status  as  Stockholder.  Upon  submission  of a
Notice of  Conversion  by a holder of Series B Preferred  Stock,  (i) the shares
covered  thereby (other than the shares,  if any, which cannot be issued because
their  issuance  would exceed such  holder's  allocated  portion of the Reserved
Amount)  shall be deemed  converted  into  shares  of Common  Stock and (ii) the
holder's rights as a holder of such converted shares of Series B Preferred Stock
shall cease and terminate,  excepting only the right to receive certificates for
such shares of Common  Stock and to any  remedies  provided  herein or otherwise
available  at law or in  equity  to such  holder  because  of a  failure  by the
Corporation  to comply  with the  terms of this  Certificate  of  Determination.
Notwithstanding the foregoing, if a holder has not received certificates for all
shares  of  Common  Stock  prior to the  tenth  (10th)  business  day  after the
expiration  of the Delivery  Period with  respect to a  conversion  of shares of
Series B Preferred  Stock for any  reason,  then  (unless  the holder  otherwise
elects to retain  its  status as a holder of Common  Stock by so  notifying  the
Corporation)  the holder  shall  regain the rights of a holder of such shares of
Series B Preferred  Stock with  respect to such  unconverted  shares of Series B
Preferred Stock and the Corporation  shall, as soon as practicable,  return such
unconverted  shares of Series B Preferred Stock to the holder or, if such shares
of Series B  Preferred  Stock have not been  surrendered,  adjust its records to
reflect that such shares of Series B Preferred Stock have not been converted. In
all cases,  the holder shall  retain all of its rights and remedies  (including,
without limitation, the right to receive Conversion Default Payments pursuant to
Section 6(f) to the extent required thereby for such Conversion  Default and any
subsequent Conversion Default).

                  7. Automatic Conversion. So long as the Registration Statement
is effective and there is not then a continuing Mandatory Redemption Event, each
share of Series B Preferred  Stock issued and  outstanding  on January 30, 2000,
subject to any adjustment as set forth below (the "Automatic  Conversion Date"),
automatically shall be converted into shares of Common Stock on such date at the
then  effective  Conversion  Price in  accordance  with,  and  subject  to,  the
provisions  of Section 6 hereof  (the  "Automatic  Conversion").  The  Automatic
Conversion  Date shall be delayed by one (1) Trading  Day each for each  Trading
Day  occurring  prior  thereto and prior to the full  conversion of the Series B
Preferred  Stock  that (i) sales  cannot be made  pursuant  to the  Registration
Statement (whether by reason of the Company's failure to properly  supplement or
amend  the  prospectus  included  therein  in  accordance  with the terms of the
Registration  Rights  Agreement or otherwise)  or (ii) any Mandatory  Redemption
Event (as  defined  in Section 5)  exists,  without  regard to whether  any cure
periods shall have run. The Automatic  Conversion  Date shall be the  Conversion
Date for purposes of determining the Conversion  Price

                                       21
<PAGE>

and the time within  which  certificates  representing  the Common Stock must be
delivered to the holder.

                  8.  Protective  Provisions.  So long as  shares  of  Series  B
Preferred  Stock are  outstanding,  the  Corporation  shall not,  without  first
obtaining the approval (by vote or written consent, as provided by the CAGCL) of
the  holders of at least a majority of the then  outstanding  shares of Series B
Preferred Stock:

                           (a)  alter  or  change  the  rights,  preferences  or
privileges  of the Series B Preferred  Stock or any Senior  Securities  so as to
affect adversely the Series B Preferred Stock;

                           (b) create  any new class or series of capital  stock
having a  preference  over the Series B Preferred  Stock as to  distribution  of
assets  upon  liquidation,  dissolution  or  winding up of the  Corporation  (as
previously defined in Section 1 hereof, "Senior Securities");

                           (c)  increase  the  authorized  number  of  shares of
Series B Preferred Stock; or

                           (d)  do  any  act  or   thing   not   authorized   or
contemplated by this Certificate of Determination which would result in taxation
of the  holders of shares of the Series B Preferred  Stock under  Section 305 of
the Internal  Revenue Code of 1986, as amended (or any  comparable  provision of
the Internal Revenue Code as hereafter from time to time amended).

                  In the  event  holders  of at  least a  majority  of the  then
outstanding shares of Series B Preferred Stock agree to allow the Corporation to
alter or change the rights,  preferences or privileges of the shares of Series B
Preferred Stock,  pursuant to subsection (a) above, so as to affect the Series B
Preferred  Stock,  then the  Corporation  will deliver  notice of such  approved
change to the holders of the Series B Preferred Stock that did not agree to such
alteration or change (the  "Dissenting  Holders") and  Dissenting  Holders shall
have the right for a period of thirty (30) days to convert pursuant to the terms
of this  Certificate of  Determination as they exist prior to such alteration or
change or continue to hold their shares of Series B Preferred Stock.

                  9. Pro Rata  Allocations.  The  Maximum  Share  Amount and the
Reserved  Amount  (including  any increases  thereto)  shall be allocated by the
Corporation  pro rata among the holders of Series B Preferred Stock based on the
number of shares of Series B Preferred  Stock then held by each holder  relative
to the  total  aggregate  number of shares  of  Series B  Preferred  Stock  then
outstanding.

                                       22

<PAGE>

                  IN  WITNESS  WHEREOF,  the  undersigned  each  declares  under
penalty of perjury  that the matters set out in the  foregoing  certificate  are
true of his own knowledge, and the undersigned have executed this certificate at
Fremont, California as of the 30th day of January, 1998.



                                                        ------------------------
                                                        Thinh Q. Tran
                                                        President


                                                        ------------------------
                                                        Kit Tsui
                                                        Secretary


                                       23


<PAGE>






                                                                       EXHIBIT A

                              NOTICE OF CONVERSION

(To be Executed by the Registered Holder
in order to Convert the Series B Preferred Stock)

                  The undersigned  hereby  irrevocably  elects to convert ______
shares of Series B Preferred  Stock,  represented  by stock  certificate  No(s).
__________  (the  "Preferred  Stock  Certificates")  into shares of common stock
("Common  Stock") of Sigma Designs,  Inc. (the  "Corporation")  according to the
conditions of the Certificate of  Determination  of Series B Preferred Stock, as
of the date  written  below.  If  securities  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.  No
fee will be charged to the Holder for any conversion, except for transfer taxes,
if any.  A copy of each  Preferred  Stock  Certificate  is  attached  hereto (or
evidence of loss, theft or destruction thereof).

                  The  undersigned  represents  and warrants that all offers and
sales by the  undersigned of the  securities  issuable to the  undersigned  upon
conversion  of  the  Series  B  Preferred   Stock  shall  be  made  pursuant  to
registration of the securities under the Securities Act of 1933, as amended (the
"Act"), or pursuant to an exemption from registration under the Act.

                  If the  undersigned  does not wish to have  the  Common  Stock
delivered  electronically  by crediting the account of the  undersigned's  Prime
Broker  with  the  Depository  Trust  Company  through  its  Deposit  Withdrawal
Agreement Conversion System, check here |_|

                  Date of Conversion:___________________________

                  Applicable Conversion Price:____________________

                  Number of Shares of
                  Common Stock to be Issued:_____________________

                  Signature:____________________________________

                  Name:_______________________________________

                  Address:______________________________________

*The  Corporation  is not  required  to issue  shares of Common  Stock until the
original Series B Preferred Stock  Certificate(s) (or evidence of loss, theft or
destruction  thereof) to be  converted  are received by the  Corporation  or its
Transfer Agent.  The Corporation  shall issue and deliver shares of Common Stock
to an overnight  courier not later than two (2) business days following  receipt
of the original Preferred Stock  Certificate(s) to be converted,  and shall make
payments pursuant to the Certificate of Determination for the number of business
days such issuance and delivery is late.



                                                                     Exhibit 4.4

         THIS WARRANT AND THE SHARES  ISSUABLE UPON THE EXERCISE OF THIS WARRANT
         HAVE NOT BEEN REGISTERED  UNDER THE SECURITIES ACT OF 1933, AS AMENDED.
         EXCEPT AS  OTHERWISE  SET  FORTH  HEREIN  OR IN A  SECURITIES  PURCHASE
         AGREEMENT DATED AS OF JANUARY 30, 1998, NEITHER THIS WARRANT NOR ANY OF
         SUCH SHARES MAY BE SOLD, OFFERED FOR SALE,  ASSIGNED,  TRANSFERRED,  OR
         OTHERWISE DISPOSED OF IN THE ABSENCE OF REGISTRA TION UNDER SUCH ACT OR
         AN OPINION OF COUNSEL THAT  REGISTRATION IS NOT REQUIRED UNDER SUCH ACT
         OR UNLESS  SOLD  PURSUANT  TO RULE 144 UNDER  SUCH ACT.  ANY SUCH SALE,
         ASSIGNMENT  OR  TRANSFER  MUST  ALSO  COMPLY  WITH   APPLICABLE   STATE
         SECURITIES LAWS.

                                                                   Right to
                                                                   Purchase
                                                                   50,000
                                                                   Shares of
                                                                   Common
                                                                   Stock, no par
                                                                   value per
                                                                   share


                             STOCK PURCHASE WARRANT

         THIS CERTIFIES THAT, for value received,  RGC INTERNATIONAL  INVESTORS,
LDC or its registered assigns, is entitled to purchase from Sigma Designs, Inc.,
a  California  corporation  (the  "Company"),  at any time or from  time to time
during the period specified in

Paragraph 2 hereof,  Fifty Thousand (50,000) fully paid and nonassessable shares
of the Company's Common Stock, no par value per share (the "Common  Stock"),  at
the Exercise Price (as defined below). The "Exercise Price" per share shall mean
130% of the  average  closing  bid prices of the  Common  Stock for the five (5)
Trading Days ending April 30, 1998.  The term "Warrant  Shares," as used herein,
refers to the shares of Common Stock purchasable  hereunder.  The Warrant Shares
and the  Exercise  Price are subject to  adjustment  as provided in  Paragraph 4
hereof.  The term  Warrants  means this  Warrant and the other  warrants  issued
pursuant to that certain Securities Purchase Agreement,  dated January 30, 1998,
by and among the Company and the Buyers  listed on the  execution  page  thereof
(the "Securities Purchase Agreement").

         This  Warrant  is  subject  to the  following  terms,  provisions,  and
conditions:

         1. Manner of Exercise;  Issuance of  Certificates;  Payment for Shares.
Subject to the  provisions  hereof,  this Warrant may be exercised by the holder
hereof,  in whole or in part, by the surrender of this Warrant,  together with a
completed  exercise  agreement  in  the  form  attached  hereto  (the  "Exercise
Agreement"),  to the Company during normal business hours on any business day at
the Company's principal executive offices (or such other office or agency of the
Company  as it may  designate  by notice  to the  holder  hereof),  and upon (i)
payment to the Company in cash,  by certified or official  bank check or by wire
transfer  for the account of the Company of the  Exercise  Price for the Warrant
Shares specified in the Exercise  Agreement or (ii) if the resale of the Warrant
Shares  by  the  holder  is  not  then  registered   pursuant  to  an  effective
registration  statement  under  the  Securities  Act of 1933,  as  amended  (the
"Securities Act"), delivery to the Company of a written notice of an election to
effect a "Cashless Exercise" (as defined in Section 11(c) below) for the Warrant
Shares  specified in the  Exercise  Agreement.  The Warrant  Shares so purchased
shall be deemed to be issued to the holder hereof or such holder's designee,  as
the record  owner of such  shares,  as of the close of  business  on the date on
which this Warrant shall have been surrendered, the completed Exercise Agreement
shall have been  delivered,  and payment shall have been made for such shares as
set forth above. Certificates for the Warrant Shares so purchased,  representing
the aggregate  number of shares  specified in the Exercise  Agreement,  shall be
delivered to the holder hereof within a reasonable time, not exceeding three (3)
business days, after this Warrant shall have been so exercised. The certificates
so delivered  shall be in such  denominations  as may be requested by the holder
hereof and shall be  registered in the name of such holder or such other name as
shall be  designated by such holder.  If this Warrant shall have been  exercised
only in part, then,  unless this Warrant has expired,  the Company shall, at its
expense,  at the time of delivery of such certificates,  deliver to the holder a
new Warrant representing the number of shares with respect to which this Warrant
shall not then have been exercised.

                  Notwithstanding  anything in this Warrant to the contrary,  in
no event  shall the Holder of this  Warrant be  entitled to exercise a number of
Warrants (or portions  thereof) in excess of the number of Warrants (or portions
thereof)  upon  exercise  of which the sum of (i) the number of shares of Common
Stock  beneficially owned by the Holder and its affiliates (other than shares of
Common Stock which may be deemed beneficially owned through the ownership of the
unexercised  Warrants  and  unconverted  shares of Series B Preferred  Stock (as
defined in the Securities  Purchase  Agreement) and (ii) the number of shares of
Common Stock  issuable upon exercise of the Warrants (or portions  thereof) with
respect to which the determination  described

                                       2
<PAGE>

herein is being made, would result in beneficial ownership by the Holder and its
affiliates  of more than 4.9% of the  outstanding  shares of Common  Stock.  For
purposes of the immediately  preceding sentence,  (i) beneficial ownership shall
be determined in accordance with Section 13(d) of the Securities Exchange Act of
1934, as amended, and Regulation 13D-G thereunder,  except as otherwise provided
in clause (i) hereof  and (ii) the  Holder may waive the  limitations  set forth
therein by written  notice to the Company upon not less than sixty-one (61) days
prior written notice (with such waiver taking effect only upon the expiration of
such 61 day notice period).

         2. Period of Exercise.  This Warrant is exercisable at any time or from
time to time on or after April 30, 1998 and before 5:00 p.m., New York City time
on April 30, 2001 (the "Exercise Period").

         3. Certain Agreements of the Company.  The Company hereby covenants and
agrees as follows:

                  (a) Shares to be Fully Paid.  All Warrant  Shares  will,  upon
issuance in accordance with the terms of this Warrant, be validly issued,  fully
paid, and nonassessable and free from all taxes, liens, and charges with respect
to the issue thereof.

                  (b)  Reservation of Shares.  During the Exercise  Period,  the
Company  shall at all times have  authorized,  and  reserved  for the purpose of
issuance upon exercise of this Warrant, a suf ficient number of shares of Common
Stock to provide for the exercise of this Warrant.

                  (c) Listing.  The Company shall promptly secure the listing of
the shares of Common  Stock  issuable  upon  exercise of the  Warrant  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
upon exercise of this Warrant) and shall  maintain,  so long as any other shares
of Common  Stock shall be so listed,  such listing of all shares of Common Stock
from time to time issuable  upon the exercise of this  Warrant;  and the Company
shall  so list on each  national  securities  exchange  or  automated  quotation
system, as the case may be, and shall maintain such listing of, any other shares
of capital  stock of the Company  issuable  upon the exercise of this Warrant if
and so long as any  shares of the same  class  shall be listed on such  national
securities exchange or automated quotation system.

                  (d)  Certain  Actions  Prohibited.  The  Company  will not, by
amendment  of its  charter 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 to be observed or performed by it hereunder,  but will at all times in
good faith assist in the carrying out of all the  provisions of this Warrant and
in the taking of all such action as may reasonably be requested by the holder of
this  Warrant in order to protect the  exercise  privilege of the holder of this
Warrant  against  dilution or other  impairment,  consistent  with the tenor and
purpose of this Warrant.  Without limiting the generality of the foregoing,  the
Company  (i) will not  increase  the par value of any  shares  of  Common  Stock
receivable  upon the exercise of this Warrant  above the Exercise  Price then in
effect,  and (ii) will take all such actions as may be necessary or  appropriate
in  order  that the  Company  may  validly  and  legally  issue  fully  paid and
nonassessable shares of Common Stock upon the exercise of this Warrant.

                                       3
<PAGE>

                  (e) Successors and Assigns.  This Warrant will be binding upon
any entity succeeding to the Company by merger, consolidation, or acquisition of
all or substantially all the Company's assets.

         4. Antidilution  Provisions.  During the Exercise Period,  the Exercise
Price and the number of Warrant Shares shall be subject to adjustment  from time
to time as provided in this Paragraph 4.

         In the event that any  adjustment  of the  Exercise  Price as  required
herein results in a fraction of a cent,  such Exercise Price shall be rounded up
to the nearest cent.

                  (a)  Adjustment  of  Exercise  Price and Number of Shares upon
Issuance of Common Stock.  Except as otherwise  provided in Paragraphs  4(c) and
4(e) hereof,  if and whenever on or after the date of issuance of this  Warrant,
the Company  issues or sells,  or in accordance  with  Paragraph  4(b) hereof is
deemed to have issued or sold,  any shares of Common Stock for no  consideration
or for a  consideration  per share (before  deduction of reasonable  expenses or
commissions  or  underwriting  discounts or allowances in connection  therewith)
less than the Market Price (as  hereinafter  defined) on the date of issuance (a
"Dilutive Issuance"),  then immediately upon the Dilutive Issuance, the Exercise
Price will be reduced to a price determined by multiplying the Exercise Price in
effect  immediately  prior  to the  Dilutive  Issuance  by a  fraction,  (i) the
numerator  of which is an amount equal to the sum of (x) the number of shares of
Common Stock actually  outstanding  immediately prior to the Dilutive  Issuance,
plus (y) the quotient of the aggregate consideration, calculated as set forth in
Paragraph  4(b)  hereof,  received by the Company  upon such  Dilutive  Issuance
divided  by the  Market  Price  in  effect  immediately  prior  to the  Dilutive
Issuance,  and (ii) the  denominator  of which is the total  number of shares of
Common  Stock  Deemed  Outstanding  (as  defined  below)  immediately  after the
Dilutive  Issuance.  The term  "Dilutive  Issuance"  shall not  include  (i) the
issuance of securities  under any Company stock option,  restricted stock option
or  employee  stock  purchase  plan  approved  by a  majority  of the  Company's
disinterested  directors  or as  incentive  related  distributions  to employees
approved  by a  majority  of the  Company's  disinterested  directors,  (ii) the
issuance of  securities  in  connection  with  equipment  financing or (iii) the
issuance of securities in connection with any commercial bank financing.

                  (b) Effect on Exercise Price of Certain  Events.  For purposes
of  determining  the adjusted  Exercise Price under  Paragraph 4(a) hereof,  the
following will be applicable:

                           (i) Issuance of Rights or Options.  If the Company in
any manner  issues or grants any  warrants,  rights or  options,  whether or not
immediately  exercisable,  to subscribe for or to purchase Common Stock or other
securities  convertible  into or  exchangeable  for Common  Stock  ("Convertible
Securities")  (such  warrants,  rights and options to purchase  Common  Stock or
Convertible  Securities are hereinafter  referred to as "Options") and the price
per share for which Common  Stock is issuable  upon the exercise of such Options
is less than the Market Price on the date of issuance or grant of such  Options,
then the  maximum  total  number of shares of  Common  Stock  issuable  upon the
exercise of all such  Options  will,  as of the date of the issuance or grant of
such Options,  be deemed to be  outstanding  and to have been issued and sold by
the Company for such price per share.  For purposes of the  preceding  sentence,
the "price per share for which  Common  Stock is issuable  upon the  exercise of
such Options" is determined by dividing (i) the total amount,  if any,  received
or  receivable by the Company as  consideration  for

                                       4
<PAGE>

the issuance or granting of all such Options,  plus the minimum aggregate amount
of additional consideration, if any, payable to the Company upon the exercise of
all such Options,  plus, in the case of Convertible Securities issuable upon the
exercise  of  such  Options,   the  minimum   aggregate   amount  of  additional
consideration  payable upon the conversion or exchange  thereof at the time such
Convertible  Securities first become  convertible or  exchangeable,  by (ii) the
maximum total number of shares of Common Stock issuable upon the exercise of all
such  Options   (assuming  full   conversion  of  Convertible   Securities,   if
applicable).  No further  adjustment to the Exercise Price will be made upon the
actual  issuance of such Common  Stock upon the exercise of such Options or upon
the conversion or exchange of Convertible  Securities  issuable upon exercise of
such Options.

                           (ii)  Issuance  of  Convertible  Securities.  If  the
Company in any manner issues or sells any Convertible Securities, whether or not
immediately  convertible  (other  than  where  the  same are  issuable  upon the
exercise of Options)  and the price per share for which Common Stock is issuable
upon such  conversion  or exchange is less than the Market  Price on the date of
issuance,  then the maximum total number of shares of Common Stock issuable upon
the conversion or exchange of all such  Convertible  Securities  will, as of the
date of the issuance of such Convertible Securities, be deemed to be outstanding
and to have been issued and sold by the  Company  for such price per share.  For
the purposes of the  preceding  sentence,  the "price per share for which Common
Stock is issuable  upon such  conversion  or exchange" is determined by dividing
(i)  the  total  amount,  if any,  received  or  receivable  by the  Company  as
consideration for the issuance or sale of all such Convertible Securities,  plus
the minimum aggregate amount of additional consideration, if any, payable to the
Company upon the  conversion  or exchange  thereof at the time such  Convertible
Securities first become  convertible or exchangeable,  by (ii) the maximum total
number of shares of Common Stock issuable upon the conversion or exchange of all
such Convertible Securities. No further adjustment to the Exercise Price will be
made upon the actual  issuance of such Common Stock upon  conversion or exchange
of such Convertible Securities.

                           (iii) Change in Option Price or  Conversion  Rate. If
there is a change  at any time in (i) the  amount  of  additional  consideration
payable to the  Company  upon the  exercise of any  Options;  (ii) the amount of
additional consideration,  if any, payable to the Company upon the conversion or
exchange  of any  Convertible  Securities;  or  (iii)  the  rate  at  which  any
Convertible  Securities are convertible  into or  exchangeable  for Common Stock
(other  than  under or by reason  of  provisions  designed  to  protect  against
dilution),  the  Exercise  Price in  effect at the time of such  change  will be
readjusted  to the  Exercise  Price which would have been in effect at such time
had such Options or Convertible  Securities still outstanding  provided for such
changed additional consideration or changed conversion rate, as the case may be,
at the time initially granted, issued or sold.

                           (iv)  Treatment  of Expired  Options and  Unexercised
Convertible  Securities.  If, in any case,  the total number of shares of Common
Stock issuable upon exercise of any Option or upon conversion or exchange of any
Convertible  Securities is not, in fact,  issued and the rights to exercise such
Option or to convert or exchange such Convertible  Securities shall have expired
or  terminated,  the  Exercise  Price then in effect will be  readjusted  to the
Exercise Price which would have been in effect at the time of such expiration or
termination had such Option or Convertible Securities, to the extent outstanding
immediately  prior to such  expiration

                                       5
<PAGE>

or  termination  (other than in respect of the actual number of shares of Common
Stock issued upon exercise or conversion thereof), never been issued.

                           (v)  Calculation of  Consideration  Received.  If any
Common Stock, Options or Convertible  Securities are issued, granted or sold for
cash, the  consideration  received therefor for purposes of this Warrant will be
the amount  received by the Company  therefor,  before  deduction of  reasonable
commissions,  underwriting  discounts or allowances or other reasonable expenses
paid or incurred by the Company in connection with such issuance, grant or sale.
In case any Common Stock,  Options or Convertible  Securities are issued or sold
for a consideration part or all of which shall be other than cash, the amount of
the consideration other than cash received by the Company will be the fair value
of such consideration,  except where such consideration  consists of securities,
in which case the amount of  consideration  received by the Company  will be the
Market  Price  thereof  as of the date of  receipt.  In case any  Common  Stock,
Options or Convertible Securities are issued in connection with any acquisition,
merger or consolidation in which the Company is the surviving  corporation,  the
amount of  consideration  therefor  will be deemed to be the fair  value of such
portion of the net assets and business of the  non-surviving  corporation  as is
attributable  to such Common Stock,  Options or Convertible  Securities,  as the
case may be. The fair value of any  consideration  other than cash or securities
will be determined in good faith by the Board of Directors of the Company.

                           (vi)  Exceptions to Adjustment of Exercise  Price. No
adjustment  to the  Exercise  Price  will be made (i) upon the  exercise  of any
warrants,  options or convertible securities granted,  issued and outstanding on
the date of  issuance  of this  Warrant;  (ii) upon the grant or exercise of any
stock or options which may hereafter be granted or exercised  under any employee
benefit plan of the Company now existing or to be implemented in the future,  so
long as the  issuance  of such stock or options is approved by a majority of the
independent  members of the Board of  Directors  of the Company or a majority of
the  members  of a  committee  of  independent  directors  established  for such
purpose; or (iii) upon the exercise of the Warrants.

                  (c) Subdivision or Combination of Common Stock. If the Company
at any time subdivides (by any stock split,  stock  dividend,  recapitalization,
reorganization,  reclassification  or  otherwise)  the  shares of  Common  Stock
acquirable  hereunder into a greater number of shares,  then,  after the date of
record for effecting such subdivision,  the Exercise Price in effect immediately
prior to such subdivision will be proportionately reduced. If the Company at any
time  combines  (by  reverse  stock  split,  recapitalization,   reorganization,
reclassification  or otherwise) the shares of Common Stock acquirable  hereunder
into a smaller  number of shares,  then,  after the date of record for effecting
such  combination,  the  Exercise  Price  in  effect  immediately  prior to such
combination will be proportionately increased.

                  (d)  Adjustment in Number of Shares.  Upon each  adjustment of
the Exercise Price pursuant to the provisions of this Paragraph 4, the number of
shares of Common Stock  issuable upon exercise of this Warrant shall be adjusted
by multiplying a number equal to the Exercise Price in effect  immediately prior
to such  adjustment  by the  number  of shares of  Common  Stock  issuable  upon
exercise of this Warrant  immediately  prior to such adjustment and dividing the
product so obtained by the adjusted Exercise Price.

                  (e)   Consolidation,   Merger   or   Sale.   In  case  of  any
consolidation  of the  Company  with,  or merger of the  Company  into any other
corporation, or in case of any sale or

                                       6
<PAGE>

conveyance of all or  substantially  all of the assets of the Company other than
in  connection  with a plan of complete  liquidation  of the Company,  then as a
condition  of  such  consolidation,  merger  or  sale  or  conveyance,  adequate
provision will be made whereby the holder of this Warrant will have the right to
acquire  and  receive  upon  exercise  of this  Warrant in lieu of the shares of
Common  Stock  immediately  theretofore  acquirable  upon the  exercise  of this
Warrant, such shares of stock,  securities or assets as may be issued or payable
with  respect  to or in  exchange  for the  number of  shares  of  Common  Stock
immediately  theretofore acquirable and receivable upon exercise of this Warrant
had such  consolidation,  merger or sale or conveyance  not taken place.  In any
such case,  the  Company  will make  appropriate  provision  to insure  that the
provisions of this Paragraph 4 hereof will thereafter be applicable as nearly as
may be in relation to any shares of stock or securities  thereafter  deliverable
upon  the   exercise  of  this   Warrant.   The  Company  will  not  effect  any
consolidation,  merger  or  sale  or  conveyance  unless  on  or  prior  to  the
consummation  thereof,  the  successor  corporation  (if other than the Company)
assumes by written  instrument  the  obligations  under this Paragraph 4 and the
obligations  to  deliver  to the holder of this  Warrant  such  shares of stock,
securities or assets as, in accordance with the foregoing provisions, the holder
may be entitled to acquire.

                  (f) Distribution of Assets.  In case the Company shall declare
or make any distribution of its assets (including cash) to holders of all Common
Stock as of a certain date of record as a partial liquidating  dividend,  by way
of return  of  capital  or  otherwise,  then,  after  such  date of  record  for
determining stockholders entitled to such distribution, but prior to the date of
distribution, the holder of this Warrant shall be entitled upon exercise of this
Warrant  for the  purchase of any or all of the shares of Common  Stock  subject
hereto,  to receive the amount of such assets  which would have been  payable to
the holder had such holder been the holder of such shares of Common Stock on the
record date for the determination of stockholders entitled to such distribution.

                  (g) Notice of  Adjustment.  Upon the  occurrence  of any event
which  requires any  adjustment of the Exercise  Price,  then,  and in each such
case, the Company shall give notice thereof to the holder of this Warrant, which
notice shall state the Exercise  Price  resulting  from such  adjustment and the
increase or decrease in the number of Warrant  Shares  purchasable at such price
upon exercise,  setting forth in reasonable detail the method of calculation and
the facts  upon which  such  calculation  is based.  Such  calculation  shall be
certified by the chief financial officer of the Company.

                  (h) Minimum Adjustment of Exercise Price. No adjustment of the
Exercise  Price shall be made in an amount of less than 1% of the Exercise Price
in effect at the time such adjustment is otherwise  required to be made, but any
such lesser  adjustment  shall be carried  forward and shall be made at the time
and  together  with the next  subsequent  adjustment  which,  together  with any
adjustments  so  carried  forward,  shall  amount  to not  less  than 1% of such
Exercise Price.

                  (i) No Fractional Shares. No fractional shares of Common Stock
are to be issued upon the exercise of this Warrant,  but the Company shall pay a
cash  adjustment  in respect of any  fractional  share which would  otherwise be
issuable in an amount equal to the same  fraction of the Market Price of a share
of Common Stock on the date of such exercise.

                  (j)  Other Notices.  In case at any time:

                                       7
<PAGE>

                           (i) the Company  shall  declare any dividend upon the
Common  Stock  payable  in  shares  of  stock of any  class  or make  any  other
distribution  (including  dividends  or  distributions  payable  in cash  out of
retained earnings) to the holders of the Common Stock;

                           (ii) the  Company  shall offer for  subscription  pro
rata to the holders of the Common  Stock any  additional  shares of stock of any
class or other rights;

                           (iii) there shall be any  capital  reorganization  of
the Company, or reclassification of the Common Stock, or consolidation or merger
of the Company with or into, or sale of all or substantially  all its assets to,
another corporation or entity; or

                           (iv)  there  shall  be  a  voluntary  or  involuntary
dissolution, liquidation or winding-up of the Company;

then,  in each such case,  the Company  shall give to the holder of this Warrant
(a) notice of the date on which the books of the Company shall close or a record
shall be taken for  determining  the holders of Common Stock entitled to receive
any such dividend,  distribution,  or subscription rights or for determining the
holders of Common Stock entitled to vote in respect of any such  reorganization,
reclassification,  consolidation,  merger,  sale,  dissolution,  liquidation  or
winding-up  and (b) in the  case of any such  reorganization,  reclassification,
consolidation,  merger, sale, dissolution,  liquidation or winding-up, notice of
the date (or,  if not then  known,  a  reasonable  approximation  thereof by the
Company) when the same shall take place. Such notice shall also specify the date
on which the holders of Common Stock shall be entitled to receive such dividend,
distribution, or subscription rights or to exchange their Common Stock for stock
or  other  securities  or  property   deliverable   upon  such   reorganization,
reclassification,  consolidation,  merger, sale,  dissolution,  liquidation,  or
winding-up,  as the case  may be.  Such  notice  shall be given at least 20 days
prior to the record date or the date on which the Company's  books are closed in
respect thereto. Failure to give any such notice or any defect therein shall not
affect the validity of the proceedings  referred to in clauses (i), (ii),  (iii)
and (iv) above.

                  (k)  Certain   Events.   If  any  event  occurs  of  the  type
contemplated by the adjustment  provisions of this Paragraph 4 but not expressly
provided for by such  provisions,  the Company will give notice of such event as
provided in Paragraph  4(g) hereof,  and the Company's  Board of Directors  will
make an appropriate adjustment in the Exercise Price and the number of shares of
Common Stock  acquirable upon exercise of this Warrant so that the rights of the
Holder shall be neither enhanced nor diminished by such event.

                  (l)      Certain Definitions.

                           (i) "Common Stock Deemed  Outstanding" shall mean the
number of shares of Common Stock actually  outstanding  (not including shares of
Common  Stock  held in the  treasury  of the  Company),  plus  (x)  pursuant  to
Paragraph  4(b)(i)  hereof,  the maximum  total number of shares of Common Stock
issuable upon the exercise of Options,  as of the date of such issuance or grant
of such  Options,  if any, and (y) pursuant to Paragraph  4(b)(ii)  hereof,  the
maximum  total  number of shares of Common Stock  issuable  upon  conversion  or
exchange  of  Convertible  Securities,  as of  the  date  of  issuance  of  such
Convertible Securities, if any.

                                       8
<PAGE>

                           (ii)  "Market  Price," as of any date,  (i) means the
average of the last  reported  sale prices for the shares of Common Stock on the
Nasdaq  National  Market  ("Nasdaq")  for the five (5) trading days  immediately
preceding  such date as reported by Bloomberg,  L.P.  ("Bloomberg"),  or (ii) if
Nasdaq is not the principal  trading market for the shares of Common Stock,  the
average of the last reported sale prices on the principal trading market for the
Common Stock during the same period as reported by Bloomberg, or (iii) if market
value cannot be calculated as of such date on any of the  foregoing  bases,  the
Market Price shall be the fair market  value as  reasonably  determined  in good
faith by (a) the Board of  Directors of the  Corporation  or, at the option of a
majority-in-interest  of the  holders  of  the  outstanding  Warrants  by (b) an
independent  investment bank of nationally  recognized standing in the valuation
of  businesses  similar  to the  business  of the  corporation.  The  manner  of
determining  the  Market  Price of the Common  Stock set forth in the  foregoing
definition  shall apply with respect to any other security in respect of which a
determination as to market value must be made hereunder.

                           (iii) "Common  Stock," for purposes of this Paragraph
4, includes the Common Stock, no par value per share,  and any additional  class
of stock of the Company having no preference as to dividends or distributions on
liquidation, provided that the shares purchasable pursuant to this Warrant shall
include only shares of Common Stock, no par value per share, in respect of which
this  Warrant  is  exercisable,  or shares  resulting  from any  subdivision  or
combination  of  such  Common  Stock,  or in the  case  of  any  reorganization,
reclassification, consolidation, merger, or sale of the character referred to in
Paragraph 4(e) hereof, the stock or other securities or property provided for in
such Paragraph.

         5. Issue Tax. The issuance of certificates  for Warrant Shares upon the
exercise  of this  Warrant  shall be made  without  charge to the holder of this
Warrant or such shares for any issuance  tax or other costs in respect  thereof,
provided  that the  Company  shall not be  required  to pay any tax which may be
payable in respect of any transfer  involved in the issuance and delivery of any
certificate in a name other than the holder of this Warrant.

         6. No Rights or Liabilities  as a  Shareholder.  This Warrant shall not
entitle the holder  hereof to any voting rights or other rights as a shareholder
of the  Company.  No provision of this  Warrant,  in the absence of  affirmative
action by the holder hereof to purchase Warrant Shares,  and no mere enumeration
herein of the rights or privileges of the holder hereof,  shall give rise to any
liability  of such  holder for the  Exercise  Price or as a  shareholder  of the
Company,  whether  such  liability is asserted by the Company or by creditors of
the Company.

         7. Transfer, Exchange, and Replacement of Warrant.

                  (a)  Restriction  on  Transfer.  This  Warrant  and the rights
granted  to the  holder  hereof  are  transferable,  in whole  or in part,  upon
surrender of this Warrant,  together with a properly executed  assignment in the
form  attached  hereto,  at the office or agency of the  Company  referred to in
Paragraph 7(e) below,  provided,  however, that any transfer or assignment shall
be subject  to the  conditions  set forth in  Paragraph  7(f)  hereof and to the
applicable   provisions  of  the  Securities  Purchase   Agreement.   Until  due
presentment  for  registration  of  transfer  on the books of the  Company,  the
Company may treat the  registered  holder  hereof as the owner and holder hereof
for all  purposes,  and the  Company  shall not be affected by any notice to the
contrary.  Notwithstanding  anything  to  the  contrary  contained  herein,  the
registration  rights  described in Paragraph 8 are assignable only in accordance
with the provisions of that certain  Registration

                                       9
<PAGE>

Rights Agreement, dated as of January 30, 1998, by and among the Company and the
other signatories thereto (the "Registration Rights Agreement").

                  (b) Warrant  Exchangeable  for Different  Denominations.  This
Warrant is  exchangeable,  upon the surrender hereof by the holder hereof at the
office or agency of the Company  referred to in  Paragraph  7(e) below,  for new
Warrants of like tenor  representing  in the aggregate the right to purchase the
number of shares of Common Stock which may be purchased hereunder,  each of such
new Warrants to represent  the right to purchase  such number of shares as shall
be designated by the holder hereof at the time of such surrender.

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

                  (d) Cancellation;  Payment of Expenses.  Upon the surrender of
this Warrant in  connection  with any  transfer,  exchange,  or  replacement  as
provided in this  Paragraph  7, this Warrant  shall be promptly  canceled by the
Company.  The Company shall pay all taxes (other than securities transfer taxes)
and all other  expenses  (other  than legal  expenses,  if any,  incurred by the
Holder or transferees)  and charges payable in connection with the  preparation,
execution, and delivery of Warrants pursuant to this Paragraph 7.

                  (e)  Register.  The Company shall  maintain,  at its principal
executive  offices  (or such  other  office or agency of the  Company  as it may
designate by notice to the holder hereof), a register for this Warrant, in which
the Company  shall  record the name and address of the person in whose name this
Warrant has been issued,  as well as the name and address of each transferee and
each prior owner of this Warrant.

                  (f) Exercise or Transfer Without Registration. If, at the time
of the surrender of this Warrant in connection with any exercise,  transfer,  or
exchange of this  Warrant,  this Warrant (or, in the case of any  exercise,  the
Warrant Shares issuable hereunder), shall not be registered under the Securities
Act of 1933,  as  amended  (the  "Securities  Act") and under  applicable  state
securities or blue sky laws, the Company may require, as a condition of allowing
such exercise,  transfer, or exchange, (i) that the holder or transferee of this
Warrant,  as the case may be,  furnish  to the  Company  a  written  opinion  of
counsel,  which opinion and counsel are acceptable to the Company, to the effect
that such exercise, transfer, or exchange may be made without registration under
said Act and under  applicable  state securities or blue sky laws, (ii) that the
holder or transferee  execute and deliver to the Company an investment letter in
form and substance acceptable to the Company and (iii) that the transferee be an
"accredited investor" as defined in Rule 501(a) promulgated under the Securities
Act; provided that no such opinion, letter or status as an "accredited investor"
shall be required in connection  with a transfer  pursuant to Rule 144 under the
Securities  Act.  The first  holder of this  Warrant,  by taking and holding the
same,  represents to the Company that such holder is acquiring  this Warrant for
investment and not with a view to the distribution thereof.

                                       10
<PAGE>

         8. Registration Rights. The initial holder of this Warrant (and certain
assignees  thereof) is entitled  to the benefit of such  registration  rights in
respect of the Warrant Shares as are set forth in Section 2 of the  Registration
Rights Agreement.

         9. Notices. All notices, requests, and other communications required or
permitted to be given or delivered hereunder to the holder of this Warrant shall
be in writing, and shall be personally delivered,  or shall be sent by certified
or registered mail or by recognized overnight mail courier,  postage prepaid and
addressed,  to such holder at the address  shown for such holder on the books of
the  Company,  or at such  other  address as shall  have been  furnished  to the
Company  by  notice  from  such  holder.  All  notices,   requests,   and  other
communications  required or permitted to be given or delivered  hereunder to the
Company shall be in writing, and shall be personally delivered, or shall be sent
by certified or registered mail or by recognized overnight mail courier, postage
prepaid and  addressed,  to the office of the Company at 46501 Landing  Parkway,
Fremont,  California 94538, Attention: Chief Executive Officer, or at such other
address as shall  have been  furnished  to the holder of this  Warrant by notice
from the Company.  Any such notice,  request, or other communication may be sent
by  facsimile,  but shall in such case be  subsequently  confirmed  by a writing
personally  delivered or sent by certified or  registered  mail or by recognized
overnight  mail  courier as provided  above.  All notices,  requests,  and other
communications  shall be  deemed to have  been  given  either at the time of the
receipt  thereof by the person entitled to receive such notice at the address of
such person for  purposes of this  Paragraph 9, or, if mailed by  registered  or
certified mail or with a recognized overnight mail courier upon deposit with the
United States Post Office or such overnight mail courier,  if postage is prepaid
and the mailing is properly addressed, as the case may be.

         10.  Governing Law. THIS WARRANT SHALL BE GOVERNED BY AND CONSTRUED AND
ENFORCED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF CALIFORNIA WITHOUT
REGARD TO THE BODY OF LAW CONTROLLING CONFLICTS OF LAW.

         11.      Miscellaneous.

                  (a) Amendments. This Warrant and any provision hereof may only
be amended by an  instrument  in writing  signed by the  Company  and the holder
hereof.

                  (b)  Descriptive  Headings.  The  descriptive  headings of the
several  paragraphs of this Warrant are inserted for purposes of reference only,
and shall not  affect  the  meaning  or  construction  of any of the  provisions
hereof.

                  (c)  Cashless  Exercise.   Notwithstanding   anything  to  the
contrary  contained in this Warrant,  if the resale of the Warrant Shares by the
holder is not then registered  pursuant to an effective  registration  statement
under the  Securities  Act,  this Warrant may be exercised by  presentation  and
surrender of this Warrant to the Company at its principal executive offices with
a written  notice of the  holder's  intention  to  effect a  cashless  exercise,
including  a  calculation  of the number of shares of Common  Stock to be issued
upon such exercise in accordance with the terms hereof (a "Cashless  Exercise").
In the event of a Cashless  Exercise,  in lieu of paying the  Exercise  Price in
cash,  the holder  shall  surrender  this  Warrant  for that number of shares of
Common Stock  determined by multiplying the number of Warrant Shares to which it
would  otherwise be entitled by a fraction,  the numerator of which shall be the
difference  between the then current  Market Price per share of the Common Stock
and the Exercise  Price,  and the denominator of which shall be the then current
Market Price per share of Common Stock.


                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       11
<PAGE>




         IN WITNESS WHEREOF, the Company has caused this Warrant to be signed by
its duly authorized officer.

                                                      SIGMA DESIGNS, INC.


                                               By:_________________________
                                                      Thinh Q. Tran
                                                      President



                                             Dated as of January 30, 1998

                                       12
<PAGE>



                           FORM OF EXERCISE AGREEMENT


                                                         Dated:  ________, ____.


To:_____________________________


         The  undersigned,  pursuant to the  provisions  set forth in the within
Warrant,  hereby agrees to purchase  ________  shares of Common Stock covered by
such Warrant, and makes payment herewith in full therefor at the price per share
provided by such Warrant in cash or by  certified or official  bank check in the
amount of,  or, if the resale of such  Common  Stock by the  undersigned  is not
currently registered pursuant to an effective  registration  statement under the
Securities  Act of 1933, as amended,  by surrender of  securities  issued by the
Company  (including a portion of the Warrant) having a market value (in the case
of a portion of this Warrant, determined in accordance with Section 11(c) of the
Warrant) equal to $_________.  Please issue a certificate  or  certificates  for
such shares of Common  Stock in the name of and pay any cash for any  fractional
share to:


                          Name:             ___________________________________
                      
                          Signature:             ______________________________
                          Address:             ________________________________
                                               ________________________________
                      
                      
                          Note:             The above signature should
                                            correspond exactly with the name on
                                            the face of the within Warrant.
                     
and,  if said  number  of shares of  Common  Stock  shall not be all the  shares
purchasable under the within Warrant,  a new Warrant is to be issued in the name
of said undersigned  covering the balance of the shares  purchasable  thereunder
less any fraction of a share paid in cash.




                                       13
<PAGE>






                               FORM OF ASSIGNMENT


         FOR  VALUE  RECEIVED,   the  undersigned  hereby  sells,  assigns,  and
transfers  all the  rights of the  undersigned  under the within  Warrant,  with
respect  to the  number  of shares of Common  Stock  covered  thereby  set forth
hereinbelow, to:

Name of Assignee                   Address                          No of Shares






,   and   hereby   irrevocably    constitutes   and   appoints    ______________
________________________  as agent and attorney-in-fact to transfer said Warrant
on the books of the within-named corporation, with full power of substitution in
the premises.


Dated: _____________________, ____,

In the presence of

__________________

                           Name:             ___________________________________


                                    Signature:         _________________________
                                    Title of Signing Officer or Agent (if any):
                                             ___________________________________
                                    Address:         ___________________________
                                                     ___________________________


                                    Note:    The above signature should
                                             correspond exactly with the name on
                                             the face of the within Warrant.




                                       14






                                                                     EXHIBIT 5.1



                                 March 12, 1998


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 March  11,  1998  (the
"Registration  Statement"),  in  connection  with  the  registration  under  the
Securities Act of 1933, as amended, of 3,405,000 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
March 9, 1998



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