SIERRA SEMICONDUCTOR CORPORATION
                            1994 INCENTIVE STOCK PLAN
                        (as amended through June 5, 1997)

         1.       Purposes of the Plan.  The purposes of this Stock Plan are:
                  --------------------
         o        to  attract  and  retain  the  best  available  personne   fo
                  positions of substantial responsibility,

         o        to provide additional incentive to Employees  and Consultants,
                  and

         o        to promote the success of the Company's business.

Options  granted under the Plan may be Incentive  Stock Options or  Nonstatutory
Stock Options,  as determined by the  Administrator at the time of grant.  Stock
Purchase  Rights may also be granted under the Plan.  The Plan also provides for
automatic grants of Nonstatutory Stock Options to Outside Directors.

         2.       Definitions.  As used herein, the following definitions  shall
                  -----------
                  apply:

                  (a)               "Administrator"  means the  Board or  any of
                                     -------------
its Committees as shall be administering  the Plan, in accordance with Section 4
of the Plan.

                  (b)               "Applicable   Laws"    means    the    legal
                                     -----------------
requirements  relating to the  administration  of stock option plans under state
corporate and securities laws and the Code.

                  (c)               "Board" means the Board of Directors of  the
                                     -----
Company.

                  (d)               "Code" means the Internal  Revenue  Code  of
                                     ----
1986, as amended.

                  (e)               "Committee"  means a Committee appointed  by
                                     ---------
the Board in accordance with Section 4 of the Plan.

                  (f)               "Common Stock" means the Common Stock of the
                                     ------------
Company.

                  (g)               "Company"    means    Sierra   Semiconductor
                                     ------
Corporation, a California corporation.

                  (h)               "Consultant"  means  any  person,  including
                                     ----------
an advisor,  Sales  Representative  or  Distributor  engaged by the Company or a
Parent  or  Subsidiary  to  render  services  and who is  compensated  for  such
services,  provided that the term  "Consultant"  shall not include Directors who
are paid only a director's fee by the Company or who are not  compensated by the
Company for their services as Directors.


                  (i)               "Continuous    Status   as   an    Employee,
                                     -------------------------------------------
 Consultant or Outside Director"  means  that  the  employment,   consulting  or
- - -------------------------------
director  relationshipwith  the  Company  or any  Parent  or  Subsidiary  is not
interrupted  or  terminated.  Continuous  Status as an Employee,  Consultant  or
Outside  Director  shall not be considered  interrupted  in the case of: (i) any
leave of absence approved by the Company,  including sick leave, military leave,
or any other personal leave;  provided,  however, that for purposes of Incentive
Stock Options,  no such leave may exceed ninety (90) days,  unless  reemployment
upon the expiration of such leave is guaranteed by contract  (including  certain
Company policies) or statute; provided, further, that on the ninety-first (91st)
day of any such leave  (where  reemployment  is not  guaranteed  by  contract or
statute) the Optionee's  Incentive  Stock Option shall cease to be treated as an
Incentive  Stock Option and will be treated for tax  purposes as a  Nonstatutory
Stock Option;  or (ii) transfers between locations of the Company or between the
Company, its Parent, its Subsidiaries or its successor.

                  (j)               "Director" means a  member of the Board or a
                                     --------
member of the board of directors of any Parent or Subsidiary of Company.

                  (k)               "Disability"   means  total  and   permanent
                                     ----------
disability as defined in Section 22(e)(3) of the Code.

                  (l)               "Distributor"  means  any  person,   whether
                                     -----------
an  individual  or an entity,  serving as a  distributor  for the Company or any
Subsidiary  who (whether as an individual or an entity or through the individual
fulfilling the duties of the chief executive officer of the entity) (i) has five
years  experience  as  a  distributor,   (ii)  is  experienced  in  representing
semiconductor  manufacturers  and (iii) sold at least $3,000,000 of the products
it  distributes  during the fiscal year  immediately  prior to the year in which
stock is being purchased under the Plan (or $3,000,000 during the current fiscal
year to date).

                  (m)               "Employee"   means   any   person, including
                                     --------
Officers and  Directors,  employed by the Company or any Parent or Subsidiary of
the Company.  Neither  service as a Director nor payment of a director's  fee by
the Company shall be sufficient to constitute "employment" by the Company.

                  (n)               "Exchange Act" means the Securities Exchange
                                     ------------
Act of 1934, as amended.

                  (o)               "Fair Market Value" means, as  of any  date,
                                     ------------------------
the value of Common Stock determined as follows:

                           (i)      If  the  Common  Stock   is  listed  on  any
established  stock  exchange  or a national  market  system,  including  without
limitation the National Market System of the National  Association of Securities
Dealers,  Inc. Automated Quotation ("NASDAQ") System, the Fair Market Value of a
Share of Common  Stock shall be the  closing  sales price for such stock (or the
closing bid, if no sales were reported) as quoted on such system or exchange (or
the exchange with the greatest  volume of trading in Common Stock) on the day of
determination,  as reported in The Wall Street  Journal or such other  source as
the Administrator deems reliable;


                           (ii)     If the Common Stock is  quoted on the NASDAQ
System (but not on the National Market System thereof) or is regularly quoted by
a recognized  securities  dealer but selling  prices are not reported,  the Fair
Market  Value of a Share of Common  Stock shall be the mean between the high bid
and low  asked  prices  for the  Common  Stock on the day of  determination,  as
reported in The Wall Street  Journal or such other  source as the  Administrator
deems reliable; or

                           (iii)    In the absence of an  established market for
the Common Stock, the Fair Market Value shall be determined in good faith by the
Administrator.

                  (p)               "Incentive  Stock Option"  means  an  Option
                                     -----------------------
intended to qualify as an incentive  stock option  within the meaning of Section
422 of the Code and the regulations promulgated thereunder.

                  (q)                "Nonstatutory Stock Option" means an Option
                                     -------------------------
not intended to qualify as an Incentive Stock Option.

                  (r)               "Notice of Grant"  means  a  written  notice
                                     ---------------
evidencing  certain  terms  and  conditions  of an  individual  Option  or Stock
Purchase Right grant. The Notice of Grant is part of the Option Agreement.

                  (s)               "Officer"  means  a person who is an officer
                                     -------
of the  Company  within the  meaning of Section 16 of the  Exchange  Act and the
rules and regulations promulgated thereunder.

                  (t)               "Option"  means   a  stock  option   granted
                                     ------
pursuant to the Plan.

                  (u)               "Option Agreement" means a written agreement
                                     ----------------
between the Company and an Optionee  evidencing  the terms and  conditions of an
individual  Option  grant.  The  Option  Agreement  is  subject to the terms and
conditions of the Plan.

                  (v)               "Option Exchange Program"  means  a  program
                                     -----------------------
whereby outstanding options are surrendered in exchange for options with a lower
exercise price.

                  (w)               "Optioned Stock"  means  the  Common   Stock
                                     --------------
subject to an Option or Stock Purchase Right.

                  (x)               "Optionee" means an Employee,  Consultant or
                                     --------
Outside Director who holds an outstanding Option or Stock Purchase Right.

                  (y)               "Outside Director" shall mean a Director who
                                     ----------------
is not an Employee of the Company.

                  (z)               "Parent"   means  a   "parent  corporation,"
                                     ------
whether now or hereafter existing, as defined in Section 424(e) of the Code.


                  (aa)              "Plan" means this 1994 Incentive Stock Plan.
                                     ----

                  (bb)              "Restricted  Stock" means shares  of  Common
                                     -----------------
Stock  acquired  pursuant to a grant of Stock  Purchase  Rights under Section 11
below.

                  (cc)              "Restricted    Stock   Purchase   Agreement"
                                     -------------------------------------------
means a written  agreement  between the Company and the Optionee  evidencing the
terms and restrictions applying to stock purchased under a Stock Purchase Right.
The Restricted  Stock Purchase  Agreement is subject to the terms and conditions
of the Plan and the Notice of Grant.

                  (dd)              "Rule  16b-3"   means  Rule   16b-3   of the
                                     -----------
Exchange Act or any  successor to Rule 16b-3,  as in effect when  discretion  is
being exercised with respect to the Plan.

                  (ee)              "Sales  Representative"  means  any  person,
                                     ---------------------
whether an individual or an entity,  serving as a sales  representative  for the
Company or any  Subsidiary who (whether as an individual or an entity or through
the  individual  fulfilling  the  duties of the chief  executive  officer of the
entity)  (i)  has  five  years  experience  as a sales  representative,  (ii) is
experienced in representing semiconductor  manufacturers and (iii) sold at least
$3,000,000 of the products of the  manufacturers it represents during the fiscal
year  immediately  prior to the year in which stock is being purchased under the
Plan (or $3,000,000 during the current fiscal year to date).

                  (ff)              "Share" means a share  of the Common  Stock,
                                     -----
as adjusted in accordance with Section 13 of thePlan.

                  (gg)              "Stock Purchase Right"   means  the right to
                                     --------------------
purchase  Common  Stock  pursuant to Section 11 of the Plan,  as  evidenced by a
Notice of Grant.

                  (hh)              "Subsidiary"       means    a    "subsidiary
                                     ----------
corporation", whether now or hereafter existing, as defined in Section 424(f) of
the Code.

         3.       Stock Subject to the Plan.   Subject  to  the    provisions of
                  -------------------------
Section 13 of the Plan,  the  maximum  aggregate  number of Shares  which may be
optioned  and sold  under  the  Plan is  4,100,000  Shares.  The  Shares  may be
authorized,  but unissued,  or  reacquired  Common  Stock.  However,  should the
Company reacquire Shares which were issued pursuant to the exercise of an Option
or Stock Purchase Right, such Shares shall not become available for future grant
under the Plan.

                  If an  Option  or Stock  Purchase  Right  expires  or  becomes
unexercisable  without having been exercised in full, or is surrendered pursuant
to an Option Exchange Program, the unpurchased Shares which were subject thereto
shall become  available for future grant or sale under the Plan (unless the Plan
has terminated);  provided,  however, that Shares that have actually been issued
under the  Plan,  whether  upon  exercise  of an  Option or Right,  shall not be
returned  to the Plan and shall not become  available  for  future  distribution
under the Plan, except that if Shares of Restricted Stock are repurchased by the
Company at their original  purchase  price,  and the original  purchaser of such
Shares did not receive any benefits of  ownership  of such  Shares,  such Shares
shall  become  available  for future  grant under the Plan.  For purposes of the
preceding  sentence,  voting  rights shall not be  considered a benefit of Share
ownership.


         4.       Administration of the Plan.
                  ---------------------------
                  (a)               Procedure.

                           (i)      Multiple Administrative Bodies. If permitted
                                    ------------------------------
by Rule 16b-3,  the Plan may be administered by different bodies with respect to
Directors,  Officers  who are  not  Directors,  and  Employees  who are  neither
Directors nor Officers.

                           (ii)     Administration With Respect to Directors and
                                    --------------------------------------------
Officers  Subject to Section  16(b).  With  respect to Option or Stock  Purchase
- - -----------------------------------
Right grants made to  Employees  who are also  Officers or Directors  subject to
Section  16(b) of the Exchange  Act, the Plan shall be  administered  by (A) the
Board,  if the  Board  may  administer  the Plan in  compliance  with the  rules
governing a plan intended to qualify as a  discretionary  plan under Rule 16b-3,
or (B) a  committee  designated  by the  Board to  administer  the  Plan,  which
committee  shall be  constituted  to  comply  with the  rules  governing  a plan
intended to qualify as a  discretionary  plan under Rule 16b-3.  Once appointed,
such  Committee  shall  continue  to  serve  in its  designated  capacity  until
otherwise  directed by the Board.  From time to time the Board may  increase the
size of the Committee and appoint  additional  members,  remove members (with or
without cause) and substitute new members,  fill vacancies (however caused), and
remove all members of the Committee and thereafter directly administer the Plan,
all to the extent permitted by the rules governing a plan intended to qualify as
a discretionary plan under Rule 16b-3.

                           (iii)   Administration With Respect to Other Persons.
                                   ---------------------------------------------
With  respect to Option or Stock  Purchase  Right  grants made to  Employees  or
Consultants  who are neither  Directors  nor Officers of the  Company,  the Plan
shall be  administered  by (A) the Board or (B) a  committee  designated  by the
Board,  which  committee shall be constituted to satisfy  Applicable  Laws. Once
appointed, such Committee shall serve in its designated capacity until otherwise
directed by the Board.  The Board may  increase  the size of the  Committee  and
appoint  additional  members,   remove  members  (with  or  without  cause)  and
substitute new members,  fill vacancies (however caused), and remove all members
of the Committee and thereafter  directly administer the Plan, all to the extent
permitted by Applicable Laws.

                  (b)               Powers of the Administrator.  Subject to the
                                    ---------------------------
provisions of the Plan, and in the case of a Committee,  subject to the specific
duties delegated by the Board to such Committee,  the  Administrator  shall have
the authority, in its discretion:

                           (i)      to determine the  Fair Market Value  of  the
Common Stock, in accordance with Section 2(n) of the Plan;

                           (ii)     to select the Consultants and  Employees  to
whom Options and Stock Purchase Rights may be granted hereunder;


                           (iii)    to  determine  whether and  to  what  exten
Options  and Stock  Purchase  Rights or any  combination  thereof,  are  granted
hereunder;

                           (iv)     to determine the number of shares of  Common
Stock to be covered by each Option and Stock Purchase Right granted hereunder;

                           (v)      to approve forms of agreement for use  under
the Plan;

                           (vi)     to determine the terms and  conditions,  not
inconsistent  with the terms of the Plan, of any award granted  hereunder.  Such
terms and conditions  include,  but are not limited to, the exercise price,  the
time or times when Options or Stock Purchase Rights may be exercised  (which may
be based on  performance  criteria),  any  vesting  acceleration  or  waiver  of
forfeiture restrictions,  and any restriction or limitation regarding any Option
or Stock Purchase Right or the shares of Common Stock relating thereto, based in
each case on such factors as the  Administrator,  in its sole discretion,  shall
determine;

                           (vii)    to reduce the exercise price of  any  Option
or Stock Purchase Right to the then current Fair Market Value if the Fair Market
Value of the Common Stock covered by such Option or Stock  Purchase  Right shall
have declined since the date the Option or Stock Purchase Right was granted;

                           (viii)   to construe and interpret the terms  of  the
Plan and awards granted pursuant to the Plan;

                           (ix)     to prescribe,  amend  and rescind rules  and
regulations  relating to the Plan,  including rules and regulations  relating to
sub-plans  established for the purpose of qualifying for preferred tax treatment
under foreign tax laws;

                           (x)      to  modify  or  amend  each Option  or Stock
Purchase Right (subject to Section 15(c) of the Plan);

                           (xi)     to authorize any person to execute on behalf
of the Company any instrument required to effect the grant of an Option or Stock
Purchase Right previously granted by the Administrator;

                           (xii)    to institute an Option Exchange Program;

                           (xiii)   to  determine  the  terms  and  restrictions
applicable to Options and Stock Purchase Rights and any Restricted Stock; and

                           (xiv)    to make  all  other   determinations  deemed
necessary or advisable for administering the Plan.


                  (c)               Effect   of Administrator's  Decision.   The
                                    -------------------------------------
Administrator's decisions, determinations and interpretations shall be final and
binding on all  Optionees  and any other  holders  of Options or Stock  Purchase
Rights.

         5.       Eligibility.
                  ------------

                  (a)               Nonstatutory   Stock  Options    and   Stock
Purchase  Rights may be granted to Employees and  Consultants.  Incentive  Stock
Options may be granted only to Employees. Options may also be granted to Outside
Directors  but only in  accordance  with the  provisions of Section 5(b) hereof.
Subject  to  Section  5(b) with  respect  to  Outside  Directors,  if  otherwise
eligible, an Optionee who has been granted an Option or Stock Purchase Right may
be granted additional Options or Stock Purchase Rights.


                  (b)               The  provisions  set forth  in  this Section
5(b) shall not be amended more than once every six months, other than to comport
with changes in the Code, the Employee  Retirement  Income Security Act of 1974,
as amended, or the rules thereunder.  All grants of Options to Outside Directors
under  this Plan  shall be  automatic  and  non-discretionary  and shall be made
strictly in accordance with the following provisions:

                           (i)      No  person  shall  have  any  discretion  to
select which Outside  Directors or shall be granted  Options or to determine the
number of  shares  to be  covered  by  Options  granted  to  Outside  Directors;
provided,  however,  that  nothing in this Plan shall be construed to prevent an
Outside Director from declining to receive an Option under this Plan.

                           (ii)     Options   shall   be   granted  to   Outside
Directors of the Company as follows:

                                    (A)     A person who  is  first   elected an
Outside  Director o the Company after the date that this Plan is approved by the
shareholders of the Company shall upon election  automatically receive an Option
to purchase 20,000 Shares.

                                    (B)     After  the  date  that   the Plan is
approved by the  shareholders of the Company,  (i) each Outside  Director of the
Company who first served as an Outside Director prior to September 1, 1995 shall
automatically  be granted an Option to purchase  5,000 shares on June 1, of each
year during the term of the Plan,  provided such person continues to serve as an
Outside  Director on such dates;  (ii) each Outside  Director of the Company who
first  served  as  an  Outside   Director  prior  to  September  1,  1995  shall
automatically  be granted an Option to purchase  5,000  shares on  September  6,
1995,  provided such person is serving as an Outside  Director on such date; and
(iii)  each  Outside  Director  of the  Company  who first  served as an Outside
Director  after  September 1, 1995 shall  automatically  be granted an Option to
purchase  5,000  shares on each  anniversary  during the term of the Plan on the
date of such person's  election to the Board,  provided such person continues to
serve as an Outside Director on such dates.


                           (iii)    The terms of  an Option  granted pursuant to
this Section 5(e) shall be as follows:

                                    (A)     the term of the Option shall be  ten
(10) years;

                                    (B)     except as provided in Section 10  of
this Plan,  the Option  shall be  exercisable  only while the  Outside  Director
remains a director;

                                    (C)     the  exercise  price  per  share  of
Common  Stock shall be 100% of the fair market value on the date of grant of the
Option, as determined in accordance with Section 9 of the Plan;

                                    (D)     the Option shall  become exercisable
in  installments  cumulatively  with  respect  to one  one-fourth  (1/4)  of the
Optioned  Stock one year  after the date of grant  and as to an  additional  one
forty-eighth  (1/48th) of the  Optioned  Stock on the last day of each  calendar
month  thereafter;  provided,  however,  that in no event  shall  any  Option be
exercisable prior to obtaining  shareholder  approval of the Plan, nor shall any
Option  granted or amended on or after the date of a material  amendment  to the
Plan  (such  as  would  require  shareholder   approval  under  Rule  16b-3)  be
exercisable prior to obtaining shareholder approval of such amendment.

         6.       Limitations.
                  ------------
                  (a)               Each  Option  shall  be  designated  in  the
Notice of Grant as either an  Incentive  Stock  Option or a  Nonstatutory  Stock
Option.  However,  notwithstanding  such  designations,  to the extent  that the
aggregate Fair Market Value of Shares subject to an Optionee's  incentive  stock
options  granted  by  the  Company,  any  Parent  or  Subsidiary,  which  become
exercisable  for the first time during any calendar year (under all plans of the
Company or any Parent or Subsidiary) exceeds $100,000, such excess Options shall
be treated as  Nonstatutory  Stock  Options.  For purposes of this Section 6(a),
Incentive  Stock  Options shall be taken into account in the order in which they
were granted,  and the Fair Market Value of the Shares shall be determined as of
the time of grant.

                  (b)               Neither   the Plan nor  any Option or  Stock
Purchase  Right  shall  confer  upon an  Optionee  any  right  with  respect  to
continuing  the  Optionee's  employment  or  consulting  relationship  with  the
Company,  nor shall they interfere in any way with the  Optionee's  right or the
Company's right to terminate such  employment or consulting  relationship at any
time, with or without cause.

                  (c)               The  following  limitations  shall  apply to
grants of Options and Stock Purchase Rights to Employees:

                           (i)      No Employee shall be granted, in any  fiscal
year of the Company,  Options and Stock  Purchase  Rights to purchase  more than
800,000 Shares.

                           (ii)     The  foregoing limitation  shall be adjusted
proportionately in connection with any change in the Company's capitalization as
described in Section 13(a).


                           (iii)    If  an  Option  or  Stock Purchase  Right is
canceled (other than in connection with a transaction  described in Section 13),
the canceled  Option or Stock Purchase  Right will be counted  against the limit
set forth in Section  6(c)(i).  For this  purpose,  if the exercise  price of an
Option or Stock Purchase Right is reduced,  the transaction will be treated as a
cancellation of the Option or Stock Purchase Right and the grant of a new Option
or Stock Purchase Right.

         7.       Term of Plan.  Subject  to  Section  19 of the Plan,  the Plan
                  ------------
shall become effective upon the earlier to occur of its adoption by the Board or
its  approval by the  shareholders  of the Company as described in Section 19 of
the Plan.  It shall  continue  in  effect  for a term of ten (10)  years  unless
terminated earlier under Section 15 of the Plan.

         8.       Term of Option. The term of each Option shall be stated in the
                  --------------
Notice of  Grant;  provided,  however,  that in the case of an  Incentive  Stock
Option,  the term shall be ten (10) years from the date of grant or such shorter
term as may be  provided  in the  Notice of Grant.  Moreover,  in the case of an
Incentive  Stock Option  granted to an Optionee  who, at the time the  Incentive
Stock Option is granted,  owns stock representing more than ten percent (10%) of
the  voting  power of all  classes  of stock of the  Company  or any  Parent  or
Subsidiary,  the term of the Incentive Stock Option shall be five (5) years from
the date of grant or such  shorter  term as may be  provided  in the  Notice  of
Grant.

         9.       Option Exercise Price and Consideration.
                  ---------------------------------------
                  (a)               Exercise Price. The per share exercise price
                                    --------------
for the  Shares  to be  issued  pursuant  to  exercise  of an  Option  shall  be
determined by the Administrator, subject to the following:

                           (i)          In the case of an Incentive Stock Option

                                    (A)     granted to an Employee who,  at  the
time the Incentive Stock Option is granted,  owns stock  representing  more than
ten percent  (10%) of the voting power of all classes of stock of the Company or
any Parent or  Subsidiary,  the per Share  exercise  price shall be no less than
110% of the Fair Market Value per Share on the date of grant.

                                    (B)     granted to any  Employee othe   than
an Employee described in paragraph (A) immediately above, the per Share exercise
price shall be no less than 100% of the Fair Market  Value per Share on the date
of grant.

                           (ii)      In the case of a Nonstatutory Stock Option,
the per Share exercise price shall be determined by the Administrator.

                  (b)               Waiting Period and Exercise  Dates.   At the
                                    ----------------------------------
time an Option is granted,  the Administrator  shall fix the period within which
the Option may be exercised  and shall  determine any  conditions  which must be
satisfied before the Option may be exercised. In so doing, the Administrator may
specify that an Option may not be exercised  until the  completion  of a service
period.  


                  (c)               Form of  Consideration.   The  Administrato
                                    ----------------------
shall determine the acceptable form of  consideration  for exercising an Option,
including the method of payment.  In the case of an Incentive Stock Option,  the
Administrator  shall determine the acceptable form of  consideration at the time
of grant. Such consideration may consist entirely of:

                           (i)      cash;

                           (ii)     check;

                           (iii)    promissory note;

                           (iv)     other Shares which (A) in the case of Share
acquired  upon  exercise of an option,  have been owned by the Optionee for more
than six months on the date of  surrender,  and (B) have a Fair Market  Value on
the date of surrender equal to the aggregate  exercise price of the Shares as to
which said Option shall be exercised;

                           (v)      delivery  of  a properly  executed  exercise
notice  together  with such other  documentation  as the  Administrator  and the
broker,  if  applicable,  shall  require to effect an exercise of the Option and
delivery  to the  Company  of the  sale or  loan  proceeds  required  to pay the
exercise price;

                           (vi)     a  reduction   in the  amount of any Company
liability  to  the  Optionee,   including  any  liability  attributable  to  the
Optionee's participation in any Company-sponsored  deferred compensation program
or arrangement;

                           (vii)    any combination of the foregoing methods  of
payment; or

                           (viii)   such   other  consideration  and  method  of
payment for the issuance of Shares to the extent permitted by Applicable Laws.

         10.      Exercise of Option.
                  ------------------
                  (a)               Procedure  for  Exercise;      Rights  as  a
                                    ------------------------
Shareholder.  Any Option granted hereunder shall be exercisable according to the
terms of the Plan and at such times and under such  conditions  as determined by
the Administrator and set forth in the Option Agreement.

                           An Option may not be  exercised  for a fraction  of a
Share.

                           An Option shall be deemed exercised when the  Company
receives:  (i)  written  notice  of  exercise  (in  accordance  with the  Option
Agreement)  from the person  entitled  to  exercise  the  Option,  and (ii) full
payment  for the Shares  with  respect to which the  Option is  exercised.  Full
payment may consist of any consideration and method of payment authorized by the
Administrator  and permitted by the Option Agreement and the Plan. Shares issued
upon  exercise of an Option  shall be issued in the name of the  Optionee or, if
requested  by the  Optionee,  in the name of the Optionee and his or her spouse.



Until the stock  certificate  evidencing  such Shares is issued (as evidenced by
the  appropriate  entry on the  books  of the  Company  or of a duly  authorized
transfer  agent of the  Company),  no right to vote or receive  dividends or any
other rights as a  shareholder  shall exist with respect to the Optioned  Stock,
notwithstanding the exercise of the Option. The Company shall issue (or cause to
be issued) such stock  certificate  promptly  after the Option is exercised.  No
adjustment  will be made for a dividend or other right for which the record date
is prior to the date the stock  certificate  is issued,  except as  provided  in
Section 13 of the Plan.

                                    Exercising  an  Option  in any  manner shall
decrease  the number of Shares  thereafter  available,  both for purposes of the
Plan and for sale  under  the  Option,  by the  number of Shares as to which the
Option is exercised.

                  (b)               Termination of Employment,    Consulting  or
                                    ------------------------
Outside  Director  Relationship.  Upon  termination of an Optionee's  Continuous
Status as an Employee, Consultant or Outside Director (but not in the event of a
change of status from Employee to Consultant or Outside  Director (in which case
an  Employee's   Incentive  Stock  Option  shall  automatically   convert  to  a
Nonstatutory  Stock Option on the ninety-first  (91st) day following such change
of status) or from Consultant or Outside Director to Employee),  other than upon
the Optionee's death or Disability, the Optionee may exercise his or her Option,
but only within such period of time as is specified in the Notice of Grant,  and
only to the extent that the  Optionee was entitled to exercise it at the date of
termination  (but in no  event  later  than the  expiration  of the term of such
Option as set forth in the Notice of Grant).  In the absence of a specified time
in the  Notice  of  Grant,  the  Option  shall  remain  exercisable  for 90 days
following the  Optionee's  termination  of  Continuous  Status as an Employee or
Consultant.  In the case of an Incentive Stock Option, such period of time shall
not exceed  ninety  (90) days from the date of  termination.  If, at the date of
termination,  the Optionee is not entitled to exercise his or her entire Option,
the Shares  covered by the  unexercisable  portion of the Option shall revert to
the Plan.  If,  after  termination,  the  Optionee  does not exercise his or her
Option  within  the  time  specified  by the  Administrator,  the  Option  shall
terminate, and the Shares covered by such Option shall revert to the Plan.

                  (c)               Disability  of  Optionee. In the event  that
                                    ------------------------
an Optionee's  Continuous  Status as an Employee or  Consultant  terminates as a
result of the Optionee's Disability, the Optionee may exercise his or her Option
at any time within  twelve (12)  months from the date of such  termination,  but
only to the extent that the  Optionee was entitled to exercise it at the date of
such  termination (but in no event later than the expiration of the term of such
Option as set forth in the Notice of Grant). If, at the date of termination, the
Optionee  is not  entitled  to  exercise  his or her entire  Option,  the Shares
covered by the unexercisable portion of the Option shall revert to the Plan. If,
after  termination,  the Optionee does not exercise his or her Option within the
time specified  herein,  the Option shall  terminate,  and the Shares covered by
such Option shall revert to the Plan.

                  (d)               Death of Optionee. In the event of the death
                                    -----------------
of an  Optionee,  the Option may be  exercised  at any time  within  twelve (12)
months following the date of death (but in no event later than the expiration of
the term of such Option as set forth in the Notice of Grant),  by the Optionee's
estate or by a person who  acquired  the right to exercise the Option by bequest
or  inheritance,  but only to the  extent  that the  Optionee  was  entitled  to
exercise the Option at the date of death. If, at the time of death, the Optionee
was not entitled to exercise his or her entire Option, the Shares covered by the
unexercisable  portion of the Option shall  immediately  revert to the Plan. If,
after  death,  the  Optionee's  estate  or a person  who  acquired  the right to
exercise  the Option by  bequest or  inheritance  does not  exercise  the Option
within the time specified  herein,  the Option shall  terminate,  and the Shares
covered by such Option shall revert to the Plan.


                  (e)               Rule 16b-3.   Options granted to individuals
                                    ----------
subject to Section 16 of the  Exchange  Act  ("Insiders")  must  comply with the
applicable provisions of Rule 16b-3 and shall contain such additional conditions
or  restrictions  as may be  required  thereunder  to  qualify  for the  maximum
exemption from Section 16 of the Exchange Act with respect to Plan transactions.

         11.      Stock Purchase Rights.
                  ---------------------
                  (a)               Rights to Purchase.   Stock  Purchase Rights
                                    ------------------
may be issued  either  alone,  in addition  to, or in tandem  with other  awards
granted  under the Plan and/or cash awards made  outside of the Plan.  After the
Administrator  determines  that it will offer Stock  Purchase  Rights  under the
Plan, it shall advise the offeree in writing,  by means of a Notice of Grant, of
the terms,  conditions  and  restrictions  related to the offer,  including  the
number of Shares that the offeree shall be entitled to purchase, the price to be
paid, and the time within which the offeree must accept such offer,  which shall
in no event  exceed  six (6) months  from the date upon which the  Administrator
made the  determination  to grant the Stock Purchase  Right.  The offer shall be
accepted by  execution  of a  Restricted  Stock  Purchase  Agreement in the form
determined by the Administrator.

                  (b)               Repurchase     Option.       Unless      the
                                    ---------------------
Administrator  determines  otherwise,  the Restricted  Stock Purchase  Agreement
shall grant the Company a repurchase  option  exercisable  upon the voluntary or
involuntary  termination of the purchaser's  employment with the Company for any
reason   (including  death  or  Disability).   The  purchase  price  for  Shares
repurchased  pursuant to the Restricted  Stock purchase  agreement  shall be the
original  price paid by the  purchaser  and may be paid by  cancellation  of any
indebtedness of the purchaser to the Company.  The repurchase option shall lapse
at a rate determined by the Administrator.

                  (c)               Rule  16b-3. Stock  Purchase Rights  granted
                                    -----------
to Insiders,  and Shares purchased by Insiders in connection with Stock Purchase
Rights,  shall be subject to any restrictions  applicable  thereto in compliance
with Rule 16b-3.  An Insider may only purchase Shares pursuant to the grant of a
Stock Purchase Right, and may only sell Shares  purchased  pursuant to the grant
of a Stock  Purchase  Right,  during such time or times as are permitted by Rule
16b-3.

                  (d)               Other  Provisions.    The  Restricted  Stock
                                    -----------------
Purchase Agreement shall contain such other terms, provisions and conditions not
inconsistent with the Plan as may be determined by the Administrator in its sole
discretion.  In addition, the provisions of Restricted Stock Purchase Agreements
need not be the same with respect to each purchaser.


                  (e)               Rights as a Shareholder.   Once  the   Stock
                                    -----------------------
Purchase Right is exercised,  the purchaser shall have the rights  equivalent to
those of a shareholder,  and shall be a shareholder  when his or her purchase is
entered upon the records of the duly  authorized  transfer agent of the Company.
No  adjustment  will be made for a dividend  or other right for which the record
date is prior to the date the  Stock  Purchase  Right is  exercised,  except  as
provided in Section 13 of the Plan.

         12.      Non-Transferability of Options and Stock  Purchase Rights.  An
                  ---------------------------------------------------------
Option or Stock Purchase Right may not be sold, pledged, assigned, hypothecated,
transferred,  or disposed of in any manner  other than by will or by the laws of
descent  or  distribution  and may be  exercised,  during  the  lifetime  of the
Optionee, only by the Optionee.

         13.      Adjustments  Upon  Changes  in  Capitalization,   Dissolution,
                  --------------------------------------------------------------
Merger, Asset Sale or Change of Control.
- - ----------------------------------------
                  (a)               Changes in Capitalization.  Subject  to  any
                                    -------------------------
required  action by the  shareholders  of the  Company,  the number of shares of
Common Stock covered by each  outstanding  Option and Stock Purchase Right,  and
the number of shares of Common  Stock which have been  authorized  for  issuance
under the Plan but as to which no Options or Stock Purchase Rights have yet been
granted or which have been returned to the Plan upon  cancellation or expiration
of an Option or Stock Purchase  Right,  as well as the price per share of Common
Stock covered by each such outstanding  Option or Stock Purchase Right, shall be
proportionately  adjusted  for any  increase or decrease in the number of issued
shares of Common Stock resulting from a stock split,  reverse stock split, stock
dividend,  combination  or  reclassification  of the Common Stock,  or any other
increase  or decrease in the number of issued  shares of Common  Stock  effected
without  receipt  of  consideration  by the  Company;  provided,  however,  that
conversion of any  convertible  securities of the Company shall not be deemed to
have been "effected without receipt of consideration."  Such adjustment shall be
made by the Board, whose  determination in that respect shall be final,  binding
and conclusive.  Except as expressly provided herein, no issuance by the Company
of shares of stock of any class, or securities  convertible into shares of stock
of any class,  shall affect,  and no adjustment by reason  thereof shall be made
with  respect  to, the number or price of shares of Common  Stock  subject to an
Option or Stock Purchase Right.

                  (b)               Dissolution  or   Liquidation.  In the event
                                    -----------------------------
of the proposed dissolution or liquidation of the Company, to the extent that an
Option  or Stock  Purchase  Right  has not been  previously  exercised,  it will
terminate  immediately  prior to the consummation of such proposed  action.  The
Board may, in the exercise of its sole  discretion  in such  instances,  declare
that any Option or Stock  Purchase  Right shall  terminate as of a date fixed by
the Board and give each  Optionee  the right to  exercise  his or her  Option or
Stock  Purchase  Right as to all or any part of the  Optioned  Stock,  including
Shares as to which the Option or Stock  Purchase  Right would not  otherwise  be
exercisable.


                  (c)               Merger or Asset Sale.    In  the event  of a
                                    --------------------
merger  of the  Company  with  or  into  another  corporation,  or the  sale  of
substantially  all of the assets of the  Company,  each  outstanding  Option and
Stock Purchase Right shall be assumed or an equivalent  option or right shall be
substituted  by the  successor  corporation  or a Parent  or  Subsidiary  of the
successor  corporation.  The  Administrator  may, in lieu of such  assumption or
substitution,  provide for the Optionee to have the right to exercise the Option
or Stock Purchase Right as to all or a portion of the Optioned Stock,  including
Shares as to which it would not otherwise be exercisable.  If the  Administrator
makes an Option or Stock  Purchase  Right  exercisable  in lieu of assumption or
substitution in the event of a merger or sale of assets, the Administrator shall
notify the  Optionee  that the  Option or Stock  Purchase  Right  shall be fully
exercisable for a period of fifteen (15) days from the date of such notice,  and
the Option or Stock  Purchase  Right will  terminate upon the expiration of such
period.  For the purposes of this paragraph,  the Option or Stock Purchase Right
shall be  considered  assumed if,  following  the merger or sale of assets,  the
option or right confers the right to purchase,  for each Share of Optioned Stock
subject to the Option or Stock Purchase Right immediately prior to the merger or
sale of assets,  the consideration  (whether stock, cash, or other securities or
property)  received  in the merger or sale of assets by holders of Common  Stock
for each Share held on the  effective  date of the  transaction  (and if holders
were offered a choice of consideration,  the type of consideration chosen by the
holders of a majority of the outstanding  Shares);  provided,  however,  that if
such  consideration  received  in the  merger or sale of assets  was not  solely
common stock of the successor  corporation or its Parent, the Administrator may,
with the consent of the successor corporation,  provide for the consideration to
be received upon the exercise of the Option or Stock  Purchase  Right,  for each
Share of Optioned  Stock subject to the Option or Stock  Purchase  Right,  to be
solely  common stock of the  successor  corporation  or its Parent equal in fair
market value to the per share consideration  received by holders of Common Stock
in the merger or sale of assets.

         14.      Date of Grant.    The date of  grant  of  an  Option  or Stock
                  -------------
Purchase Right shall be, for all purposes,  the date on which the  Administrator
makes the  determination  granting such Option or Stock Purchase  Right, or such
other  later  date  as  is  determined  by  the  Administrator.  Notice  of  the
determination  shall be provided to each Optionee within a reasonable time after
the date of such grant.

         15.      Amendment and Termination of the Plan.
                  -------------------------------------
                  (a)               Amendment and Termination.  The Board may at
                                    -------------------------
any time amend, alter, suspend or terminate the Plan.

                  (b)              Shareholder   Approval.  The  Company   shall
                                   ----------------------
obtain  shareholder  approval of any Plan amendment to the extent  necessary and
desirable  to comply  with Rule  16b-3 or with  Section  422 of the Code (or any
successor rule or statute or other applicable law, rule or regulation, including
the  requirements of any exchange or quotation  system on which the Common Stock
is listed or quoted). Such shareholder approval, if required,  shall be obtained
in such a manner and to such a degree as is required by the applicable law, rule
or regulation.

                  (c)               Effect     of   Amendment  or   Termination.
                                    --------------------------------------------
No amendment, alteration, suspension or termination of the Plan shall impair the
rights of any Optionee,  unless mutually agreed  otherwise  between the Optionee
and the  Administrator,  which  agreement  must be in writing  and signed by the
Optionee and the Company.


         16.      Conditions Upon Issuance of Shares.
                  -----------------------------------
                  (a)               Legal  Compliance.   Shares   shall  no   be
                                    -----------------
issued  pursuant to the exercise of an Option or Stock Purchase Right unless the
exercise of such Option or Stock Purchase Right and the issuance and delivery of
such Shares shall comply with all relevant provisions of law, including, without
limitation,  the Securities Act of 1933, as amended, the Exchange Act, the rules
and regulations promulgated thereunder, Applicable Laws, and the requirements of
any stock exchange or quotation  system upon which the Shares may then be listed
or quoted,  and shall be  further  subject to the  approval  of counsel  for the
Company with respect to such compliance.

                  (b)               Investment Representations.   As a condition
                                    --------------------------
to the exercise of an Option or Stock  Purchase  Right,  the Company may require
the person  exercising  such Option or Stock  Purchase  Right to  represent  and
warrant at the time of any such  exercise  that the  Shares are being  purchased
only for investment and without any present intention to sell or distribute such
Shares if, in the opinion of counsel for the Company,  such a representation  is
required.

         17.      Liability of Company.
                  ---------------------
                  (a)               Inability to Obtain Authority. The inability
                                    ------------------------------
of the Company to obtain authority from any regulatory body having jurisdiction,
which authority is deemed by the Company's counsel to be necessary to the lawful
issuance  and sale of any Shares  hereunder,  shall  relieve  the Company of any
liability  in  respect of the  failure to issue or sell such  Shares as to which
such requisite authority shall not have been obtained.

                  (b)               Grants  Exceeding  Allotted Shares.  If  the
                                    ----------------------------------
Optioned Stock covered by an Option or Stock  Purchase Right exceeds,  as of the
date of grant,  the number of Shares  which may be issued under the Plan without
additional  shareholder  approval,  such Option or Stock Purchase Right shall be
void with respect to such excess Optioned Stock, unless shareholder  approval of
an amendment sufficiently increasing the number of Shares subject to the Plan is
timely obtained in accordance with Section 15(b) of the Plan.

         18.      Reservation of Shares.  The Company,   during the term of this
                  ---------------------
Plan,  will at all times  reserve  and keep  available  such number of Shares as
shall be sufficient to satisfy the requirements of the Plan.

         19.      Shareholder Approval. Continuance of the Plan shall be subject
                  --------------------
to approval by the  shareholders of the Company within twelve (12) months before
or after  the  date the Plan is  adopted.  Such  shareholder  approval  shall be
obtained in the manner and to the degree required under  applicable  federal and
state law.