CONFIDENTIAL


                           SALE AND TRANSFER AGREEMENT


         THIS SALE AND TRANSFER  AGREEMENT (this "Agreement") is entered into as
of  March  4,  1998,  by  and  between  Alliance  Semiconductor  Corporation,  a
corporation  organized  under  the laws of  Delaware  ("Alliance")  and  [*],  a
corporation organized under the laws of the Republic of China [*].

         Alliance  [*] own shares of stock in United  Semiconductor  Corporation
("USC"),  a joint  venture  between S3  Incorporated  ("S3"),  UMC and  Alliance
pursuant to a Stock  Purchase  Agreement,  dated as of June 30, 1996, as amended
(the "Stock Purchase Agreement").

         Alliance  desires  to sell and  transfer  to [*],  and [*]  desires  to
arrange the purchase from Alliance,  all of Alliance's right, title and interest
in and to  Thirty-Five  Million  (35,000,000)  shares of USC  common  stock (the
"Shares").

For the  consideration  and on the terms and  conditions  set forth  below,  the
parties agree as follows:

1. Sale and  Transfer.  Upon  receipt  of:  (a) the  consideration  set forth in
Section 2 below;  and (b) a copy of the consent  set forth  below  signed by S3,
Alliance  shall be deemed to have sold,  assigned,  transferred  and conveyed to
[*],  free and clear of all liens  charges and  encumbrances,  all of Alliance's
right title and interest in the Shares.

2.    Consideration.

2.1 Cash Payment. As soon as mutually agreeable following March 28, 1998, but in
no event  later than April 15,  1998,  [*] shall  deliver to  Alliance,  by wire
transfer to an account  specified by  Alliance,  the amount of Thirty New Taiwan
Dollars  (NT$30.00)  per Share,  for a total cash  payment of One Billion  Fifty
Million New Taiwan  Dollars  (NT$  1,050,000,000).  Upon receipt of these funds,
Alliance  will make prompt  payment of all  amounts  then due UMC and/or USC for
foundry  services,  and will  tender to [*] the  certificates  representing  the
Shares.

2.2  Contingent  Payment.  If, at any time after the date of this  Agreement,  a
"Liquidity Event," as defined below, occurs with respect to shares of USC stock,
then,  in addition to the Cash Payment set forth in Section 2.1 above,  [*] also
will pay to Alliance the Contingent Payment calculated as follows:

         (a) Until such time as the Contingent Payment to Alliance has been made
with respect to all of the Shares,  within 15 days of each Liquidity  Event, UMC
shall  notify  Alliance  in  writing  of the price per share of USC stock in New
Taiwan  Dollars  achieved upon the  Liquidity  Event (the  "Liquidity  Price Per
Share").  In the case of a public offering of USC shares of stock, the Liquidity
Price Per Share shall be  calculated as set forth in the  immediately  following
paragraph of this Section 2.2(a). In the case of all other Liquidity Events, the
Liquidity  Price per Share  shall be the price paid for USC shares of stock upon
the closing of each such Liquidity Event.

         If UMC (or its successor in interest) is required under the laws of the
Republic  of  China  to sell a  certain  percentage  of USC  shares  in a public
offering of USC shares (the "Mandatory Sale Percentage") at a certain price (the
Mandated Price Per Share), and Alliance elects to treat such a mandatory sale as
a Liquidity  Event,  then the Liquidity Price Per Share for such shares shall be
the Mandated Price Per Share,  provided that in no such case shall the Liquidity
Price Per Share paid to Alliance be less than the offering price for such shares
of stock at the time of the public offering.  Notwithstanding the foregoing,  to
the  extent  that  UMC or any  successor  sells  more  than the  Mandatory  Sale
Percentage  of USC shares in such a public  offering,  the  Liquidity  Price Per
Share for all shares so sold in excess of the Mandatory Sale Percentage shall be
calculated  based on the average closing price during the initial ten day period
following  the public  offering.  For  example,  if UMC is  required  to sell 40
Million  USC shares in the initial  public  offering  and UMC  further  sells an
additional  40 Million USC shares  beyond  those it is required to sell,  and if
Alliance  elects to treat the  mandatory  sale as a  Liquidity  Event,  then the
Liquidity Price Per Share for the 40 Million shares

                                                                          Page 1

Confidential Treatment Requested.  In this document, [*] denotes information for
which confidential  treatment has been requested.  Confidential portions omitted
have been filed separately with the Securities and Exchange Commission, pursuant
to Rule 24b-2 promulgated under the Securities Exchange Act of 1934, as amended.

                                                                    CONFIDENTIAL

which are  mandated for sale shall be the price at which UMC is required to sell
such shares,  and the  Liquidity  Price Per Share for the  additional 40 Million
shares  shall be the  average  closing  price  during the initial ten day period
following the public offering.

                  If USC  pays or makes a  dividend  or  other  distribution  in
common stock,  without  consideration,  on any class of capital stock of USC, or
shall  effect a  subdivision  of the  outstanding  shares of common stock into a
greater  number of shares of common stock (by stock split,  reclassification  or
otherwise  than by  payment  of a  dividend  in common  stock or in any right to
acquire common  stock),  or if the  outstanding  shares of common stock shall be
combined or consolidated, by reclassification or otherwise, into a lesser number
of shares of common stock, then the number of Shares and the Liquidity Price Per
Share  used  to  calculate  the  Contingent  Payment  shall  be  proportionately
decreased or increased,  as  appropriate,  with the objective that neither party
shall benefit from a stock  dividend,  combination  or  subdivision  in a manner
which adversely impacts the Contingent Payment the other would receive or pay.

         (b) Alliance will inform [*] in writing  within  fifteen (15) days from
its receipt of notice of Liquidity Event, whether Alliance elects to receive its
Contingent  Payment  based on such  Liquidity  Event for a portion or all of the
Shares, and/or whether Alliance instead elects to reserve its Contingent Payment
for all or a portion of the Shares for a later Liquidity Event; provided however
(i) once Alliance receives a Contingent  Payment for a portion of the Shares, it
may not request and will not be  entitled  to further or  additional  Contingent
Payments for such portion,  and (ii)  Alliance  will not be entitled  under this
Agreement to receive Contingent  Payments for more than 35 Million shares of USC
stock, and (iii) Alliance may not request to receive any Contingent  Payment for
portions of the Shares fewer than Five Million shares under this Agreement, but,
subject to the foregoing,  Alliance may request Contingent Payments with respect
to  different  portions of the Shares in  connection  with  different  Liquidity
Events.

         (c) If Alliance elects to receive its Contingent Payment for a specific
Liquidity  Event,  the  Contingent  Payment  for the  Shares  involved  shall be
calculated as follows:

Contingent Payment Per Share = [*]
         provided  that the  Contingent  Payment Per Share shall be subject to a
         cap or maximum equal to Nineteen New Taiwan Dollars (NT$19.00), so that
         the total amount paid to Alliance for each Share (NT $30 Per Share plus
         Contingent  Payment  Per Share)  will not exceed  Forty Nine New Taiwan
         Dollars (NT $49.00) per Share.

For each  specific  Liquidity  Event as to which  Alliance  elects to  receive a
Contingent  Payment,  the  Contingent  Payment  will be equal to the  following:
multiply (the Contingent  Payment Per Share for such Liquidity Event) times (the
number of Shares as to which Alliance elected to receive the Contingent  Payment
with respect to that Liquidity Event).

         (d) If the Liquidity Event is a public offering of USC shares, then the
Contingent  Payment  will be paid to  Alliance on or before the date that is the
earlier  of (i)  the  termination  date  of any  lock-up  period  applicable  to
UMC-owned  shares  of USC;  and (ii) the date that is six (6)  months  after the
Liquidity Event. As to all other Liquidity Events,  the Contingent  Payment will
be paid to  Alliance  on or before the date that is 60 days after the  Liquidity
Event.

         (e) For purposes of this Agreement,  a "Liquidity Event" shall mean any
event by which UMC, or its successor will have the  opportunity to receive value
from  transfer  of its  ownership  of shares  of stock in USC in an arms  length
transaction  other than by way of transfer to employees for incentives,  whether
or not UMC or its  successor,  in  fact,  participates  in such  opportunity.  A
Liquidity  Event will include,  for example,  completion of a public offering of
USC securities on a recognized securities exchange; a sale of USC stock owned by
UMC (or by a UMC successor) in an arms-length  transaction;  or a sale of all or
substantially  all or the  assets of USC.  For  purposes  of this  Agreement,  a
"successor"  and/or  "successor  in  interest"  of UMC will be any entity  which
succeeds  to and/or  acquires  from UMC, in the  aggregate,  more than 5 million
shares of USC common stock under  circumstances  in which such  transaction does
not qualify as a Liquidity  Event  under the terms of this  Agreement;  provided
that where any such  successor  does not acquire all of UMC's shares of stock in
USC, then there may be multiple  successors and there may be multiple  Liquidity
Events as to each separate successor.

                                                                          Page 2

Confidential Treatment Requested.  In this document, [*] denotes information for
which confidential  treatment has been requested.  Confidential portions omitted
have been filed separately with the Securities and Exchange Commission, pursuant
to Rule 24b-2 promulgated under the Securities Exchange Act of 1934, as amended.


3. Consent. [*] assumes  responsibility for obtaining any and all consents which
may be required from S3 Incorporated as to the sale of Shares and will indemnify
and hold  Alliance  harmless from and against any claim by S3 that such consents
were not obtained.

4.  Miscellaneous.  Paragraphs 6.1 through 6.3 of the Stock Purchase  Agreement,
together with paragraph 9.9 of the Foundry Venture  Agreement,  are incorporated
by  reference  as if set forth fully in this  Agreement,  in each case with this
Agreement  substituted  for the Stock  Purchase  Agreement  and Foundry  Venture
Agreement.

         The parties' duly authorized representatives as shown below have signed
and committed them to this Agreement as of the date first set forth above.




           ALLIANCE SEMICONDUCTOR                       [*]
                CORPORATION


By  /s/ N. Damodar Reddy
    --------------------------                        By [*]                
    N. Damodar Reddy, President                          -----------------------
                                                         [*]

                                                                          Page 3

Confidential Treatment Requested.  In this document, [*] denotes information for
which confidential  treatment has been requested.  Confidential portions omitted
have been filed separately with the Securities and Exchange Commission, pursuant
to Rule 24b-2 promulgated under the Securities Exchange Act of 1934, as amended.