Document:

Exhibit 4.7

                       The KMOS Semi-Custom Designs, Inc.
                      1990 Non-Qualified Stock Option Plan

     1.  Purpose.  The purpose of this Plan is to  strengthen  KMOS  Semi-Custom
Designs,  Inc. (the "Company"),  by providing  additional means of retaining and
attracting competent management personnel and key independent  contractors,  and
by providing to participating  key employees and independent  contractors  added
incentive for high levels of performance and for unusual efforts to increase the
earnings of the Company. The Plan seeks to accomplish these purposes and results
by providing a means whereby such key persons may purchase shares of the Company
pursuant to options.

     2.  Administration.  This Plan shall be  administered  by a committee  (the
"Committee")  consisting of members selected by, and serving at the pleasure of,
the Board of Directors of the Company (the "Board"). Any action of the Committee
with  respect to the  administration  of the Plan shall be taken  pursuant  to a
majority vote, or to the written consent of a majority, of its members.  Subject
to the express provisions of the Plan, the Committee shall have the authority to
construe  and  interpret  the Plan,  and to define  the terms used  therein,  to
prescribe,   amend,   and  rescind  rules  and   regulations   relating  to  the
administration  of the Plan, and to make all other  determinations  necessary or
advisable  for  the  administration  of  the  Plan.  The  determinations  of the
Committee on the foregoing  matters shall be conclusive.  Subject to the express
provisions of the Plan,  the Committee  shall  determine from the eligible class
the individuals who shall receive  options,  and the terms and provisions of the
options (which need not be  identical);  provided,  however,  that all grants of
options shall be by the Board.

     3. Participation.  Key employees and independent contractors of the Company
or of any subsidiary  corporation shall be eligible for selection to participate
in the Plan; provided,  however,  that members of the Committee shall not, while
members of the Committee,  be eligible to receive the grant of options under the
Plan. In no event,  however, may any independent  contractor  participate in the
Plan  if  such  participation  is  (a)  prohibited,  or (b)  restricted  (either
absolutely  or subject  to various  securities  requirements,  whether  legal or
administrative,  being  complied  with),  in  the  jurisdiction  in  which  such
independent  contractor is resident under the relevant  securities  laws of that
jurisdiction.  Provided  Always  That in the  case of (b)  above,  the  relevant
independent  contractor's  participation  in the  Plan  may be  effected  at the
absolute  discretion of the Committee if compliance with the relevant securities
requirements  of the  jurisdiction  in  which  such  independent  contractor  is
resident is not impractical  (having regard to the nature of those requirements)
and would not involve  undue  expense.  An  individual  who has been  granted an
option may, if otherwise eligible, be granted an additional option or options if
the Board shall so determine.

     4.  Shares  Subject to the Plan.  Subject to  adjustments  as  provided  in
Section  11 hereof,  the shares to be offered  under the Plan shall be shares of
the  Company's  authorized  but unissued  ordinary  shares  (hereinafter  called
"Shares") and the aggregate amount of stock to be delivered upon the exercise of
all options granted under the Plan shall not exceed Five Hundred Thousand Shares
(500,000), subject to adjustment as set forth in Section 11 of this Plan. If any
option granted hereunder shall expire or terminate for any reason without having
been fully exercised in full, the unpurchased shares subject thereto shall again
be available for the purposes of this Plan.  Subject to the general  limitations
contained in this Plan, the Board may make any adjustment in the exercise price,
the number of shares subject to, or the term of an option by  cancellation of an
outstanding  option and a  subsequent  regranting  of an option,  amendment,  or
substitution,  or regrant  may have an  exercise  price which is higher or lower
than the prior option,  provide for a greater or lesser number of shares subject
to the option, or a longer or shorter term than the prior option.

     5. Option Price.  The purchase price of Shares covered by each option shall
be  determined  by the  Committee  Provided  That in no event shall the purchase
price per share be less than the par value of a share The purchase  price of any
shares  purchased  shall be paid in full in cash or by check at the time of each
purchase.

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     6.  Option  Period.  Each option and all rights or  obligations  thereunder
shall expire on such date as the Committee or the Board shall determine, but not
later  than the  seventh  (7th)  anniversary  of the date on which the option is
granted, and shall be subject to earlier termination as hereinafter provided.

     7.  Exercise  of  Options.  Each  person to whom an option is granted  must
agree,  at the request of the Company,  to remain  either (i) in the  continuous
employ of the  Company  or a  subsidiary  or parent  corporation  or (ii)  under
written or oral contract to perform  services as an  independent  contractor for
the Company or a subsidiary  or parent  corporation,  following  the date of the
granting of the option for a period to be  determined  by the Committee and then
included in the specific Stock Option  Agreement to be executed with each option
holder.  Nothing contained in the Plan (or in any option granted pursuant to the
Plan) shall  confer upon any  employee or  independent  contractor  any right to
continue  in  the  employ  of  the  Company  or of  any  subsidiary  or  parent,
corporation or constitute any contract or agreement of employment or independent
contract or interfere in any way with the right of the Company or any subsidiary
or parent  corporation  to reduce such  person's  compensation  from the rate in
existence at the time of the granting of an option or to terminate such person's
employment or other contractual relationship, but nothing contained herein or in
any option  agreement  shall  affect any  contractual  rights of an  employee or
independent contractor.

     Each option shall become exercisable and the total number of shares subject
thereto shall be purchasable, in such installments,  which need not be equal, as
the  Committee  shall  determine;  provided,  however,  that if the holder of an
option shall not in any given installment period purchase all of the shares that
such holder is entitled to purchase in such  installment  period,  such holder's
right to purchase  any shares not  purchased  in such  installment  period shall
continue until the expiration or sooner  termination of such holder's option. No
option or installment  thereof shall be  exercisable  except in respect of whole
shares,  and fractional  share interests  shall be disregarded.  No less than 10
shares may be purchased  at one time unless the number  purchased is at the time
the total number available for purchase under the option.

     The option  holder shall have the right to receive  property at the time of
exercise of the option so long as the property is subject to inclusion in income
under Internal Revenue Code Section 83.

     8.  Nontransferability of Options. An option granted under this Plan shall,
by its terms, be non-transferable by the option holder other than by will or the
laws of descent and distribution,  and shall be exercisable  during his lifetime
only by the option holder.

     9. Termination of Employment or Independent Contractor Relationship. If the
option holder ceases to be employed by or ceases to be an independent contractor
of the Company or any subsidiary or parent, because of discharge for cause, such
holder's  option shall expire  concurrently  with such discharge for cause.  The
term "cause" as used herein with respect to the  discharge by the Company of any
option  holder,  shall  mean  failure  by such  option  holder to  perform  in a
satisfactory   manner  such  holder's  duties  as  an  employee  or  independent
contractor  of the Company,  as determined  by the Board in its  discretion,  or
conduct on the part of such option  holder which the Board,  in good faith shall
determine  would reflect to seriously  upon the public  reputation of the option
holder, if such conduct became publicly known, as to prejudice substantially the
Company's  interests  is such  option  holder  were  retained  as an employee or
independent contractor of the Company or any subsidiary or parent. If the option
holder ceases to be employed by or ceases to be an independent contractor of the
Company  or any  subsidiary  or  parent,  for any  reason  other  than  death or
discharge for cause, such holder's option shall,  subject to earlier termination
pursuant to Section 6, expire as may be provided in the option.

     10. Death of Employee. If any option holder dies while employed by or under
contract  to the  Company  or any  subsidiary  or  parent,  or during the period
referred to in Section 9 hereof, such holder's option shall,  subject to earlier
termination  pursuant to Section 6, expire one year after the date of such death
(or after such shorter period as may be provided in the option), and during such
period  after such death such option may,  to the extent that  installments,  if
any, had accrued as of the date of the termination of such holder's  employment,
be exercised by the

<PAGE>

person or persons to whom the option holder's rights under the option shall pass
by will or by the  applicable  laws of descent  and  distribution.  In no event,
however,  shall any such option be  exercisable  after the specified  expiration
date of the option term.

     11. Adjustments Upon Changes in  Capitalization.  If the outstanding shares
of the Company are  increased,  decreased,  or changed  into, or exchanged for a
different  number  or  kind of  shares  or  securities  of the  Company  through
reorganization,  merger,  recapitalization,  reclassification,  stock  split-up,
stock dividend, stock consolidation,  or otherwise, an adjustment to the options
granted  pursuant  to  this  Plan  shall  either  be  made  or  not  made,  said
determination  to be made by the  Committee  and included in the specific  Stock
Option Agreement to be executed with each option holder.

     Upon  the   dissolution  or   liquidation   of  the  Company,   or  upon  a
reorganization,  merger,  or  consolidation  of the  Company  with  one or  more
corporations as a result of which the Company is not the surviving  corporation,
or upon a sale of  substantially  all the  property  of the  Company  to another
corporation,  this Plan shall terminate,  unless provision be made in connection
with such transaction for the assumption of options theretofore  granted, or the
substitution  for such options of new options  covering the stock of a successor
employer  corporation,  or a parent  or  subsidiary  thereof,  with  appropriate
adjustments as to number and kind of shares and prices.

     12. Amendment and Termination. The Board may at any time suspend, amend, or
terminate  this Plan and may,  with the consent of an option  holder,  make such
modifications  of the terms and  conditions of such holder's  option as it shall
deem  advisable.  No option may be granted  during any suspension of the Plan or
after such termination.  The amendment,  suspension,  or termination of the Plan
shall not, without the consent of the option holder,  alter or impair any rights
or obligations under any option theretofore granted under this Plan.

     13. Time for  Granting of Options.  The  granting of an option  pursuant to
this Plan shall take place at the time of the Committee's  action,  as described
in the second  paragraph  of Section 3 hereof;  provided,  however,  that if the
appropriate  resolutions  of the  Committee  indicate  that an  option  is to be
granted as of and at some  future  date,  the date of grant shall be such future
date. In the event action by the Committee is taken by unanimous written consent
of its members,  the action of the  Committee  shall be deemed to be at the time
the last member signs the consent.

     14. Privileges of Share Ownership;  Nodistributive Intent. The holder of an
option  shall not be  entitled to the  privilege  of share  ownership  as to any
shares not actually  issued and delivered to him. Upon the exercise of an option
at a time  when  there  is not in  effect  under  the  Securities  Act of 1933 a
registration statement relating to the shares issuable upon exercise thereof and
available for delivery a prospectus meeting the requirements of Section 10(a)(3)
of said Act,  the option  holder shall  represent  and warrant in writing to the
Company  that the shares  purchased  are not being  acquired  with a view to the
distribution  thereof. No shares shall be issued upon the exercise of any option
unless and until any then applicable requirements of the Securities and Exchange
Commission,  the California  Commissioner of  Corporations,  or other regulatory
agencies  having  jurisdiction  and of any  exchanges  upon which  shares of the
Company may be listed shall have been fully complied with.

     15.  Effective Date of the Plan. This Plan shall be effective upon approval
thereof by the Board of Directors.

     16.  Termination.  Unless previously  terminated by the Board of Directors,
this Plan shall  terminate  at the close of business on October 1, 2000,  and no
options shall be granted under it  thereafter,  but such  termination  shall not
affect any option theretofore granted.<PAGE>   1

                                                                     EXHIBIT 4.1

                        INTEGRATED SILICON SOLUTION, INC.

                        1993 EMPLOYEE STOCK PURCHASE PLAN
                      (as amended through October 21, 1997)

     The following constitute the provisions of the 1993 Employee Stock Purchase
Plan of Integrated Silicon Solution, Inc.

     1.   Purpose. The purpose of the Plan is to provide employees of the
Company and its Designated Subsidiaries with an opportunity to purchase Common
Stock of the Company through accumulated payroll deductions. It is the intention
of the Company to have the Plan qualify as an "Employee Stock Purchase Plan"
under Section 423 of the Internal Revenue Code of 1986, as amended. The
provisions of the Plan, accordingly, shall be construed so as to extend and
limit participation in a manner consistent with the requirements of that section
of the Code.

     2.   Definitions.

          (a)  "Board" shall mean the Board of Directors of the Company.

          (b)  "Code" shall mean the Internal Revenue Code of 1986, as amended.

          (c)  "Common Stock" shall mean the Common Stock of the Company.

          (d)  "Company" shall mean Integrated Silicon Solution, Inc., and any
Designated Subsidiary of the Company.

          (e)  "Compensation" shall mean all base straight time gross earnings,
including commissions, but exclusive of payments for overtime, shift premium,
incentive compensation, incentive payments, bonuses, and other compensation.

          (f)  "Designated Subsidiaries" shall mean the Subsidiaries which have
been designated by the Board from time to time in its sole discretion as
eligible to participate in the Plan.

          (g)  "Employee" shall mean any individual who is an Employee of the
Company for tax purposes whose customary employment with the Company is at least
twenty (20) hours per week and more than five (5) months in any calendar year.
For purposes of the Plan, the employment relationship shall be treated as
continuing intact while the individual is on sick leave or other leave of
absence approved by the Company. Where the period of leave exceeds 90 days and
the individual's right to reemployment is not guaranteed either by statute or by
contract, the employment relationship will be deemed to have terminated on the
91st day of such leave.

          (h)  "Enrollment Date" shall mean the first day of each Offering
Period.

          (i)  "Exercise Date" shall mean the last day of each Purchase Period.

<PAGE>   2

          (j)  "Fair Market Value" shall mean, as of any date, the value of
Common Stock determined as follows:

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

               (2)  If the Common Stock is quoted on the NASDAQ system (but not
on the National Market thereof) or is regularly quoted by a recognized
securities dealer but selling prices are not reported, its Fair Market Value
shall be the mean of the closing bid and asked prices for the Common Stock on
the date of such determination, as reported in The Wall Street Journal or such
other source as the Board deems reliable, or;

               (3)  Notwithstanding paragraphs (1) and (2), in the case of an
Offering Period commencing substantially concurrent with the Company's initial
public offering, the Fair Market Value may be determined by the Board to be
equal to the initial price to the public of shares of Common Stock in such
offering; or

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

          (k)  "Offering Period" shall mean the period of approximately
twenty-four (24) months during which an option granted pursuant to the Plan may
be exercised, commencing on the first Trading Day on or after February 1 and
August 1 of each year and terminating on the last Trading Day in the periods
ending twenty-four (24) months later. The duration and timing of Offering
Periods may be changed pursuant to Section 4 of this Plan.

          (l)  "Plan" shall mean this Employee Stock Purchase Plan.

          (m)  "Purchase Price" shall mean an amount equal to 85% of the Fair
Market Value of a share of Common Stock on the Enrollment Date or on the
Exercise Date, whichever is lower.

          (n)  "Purchase Period" shall mean the approximately six month period
commencing after one Exercise Date and ending with the next Exercise Date,
except that the first Purchase Period of any Offering Period shall commence on
the Enrollment Date and end with the next Exercise Date.

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<PAGE>   3

          (o)  "Reserves" shall mean the number of shares of Common Stock
covered by each option under the Plan which have not yet been exercised and the
number of shares of Common Stock which have been authorized for issuance under
the Plan but not yet placed under option.

          (p)  "Subsidiary" shall mean a corporation, domestic or foreign, of
which not less than 50% of the voting shares are held by the Company or a
Subsidiary, whether or not such corporation now exists or is hereafter organized
or acquired by the Company or a Subsidiary.

          (q)  "Trading Day" shall mean a day on which national stock exchanges
and the National Association of Securities Dealers Automated Quotation (NASDAQ)
System are open for trading.

     3.   Eligibility.

          (a)  Any Employee (as defined in Section 2(g)), who shall be employed
by the Company on a given Enrollment Date shall be eligible to participate in
the Plan.

          (b)  Any provisions of the Plan to the contrary notwithstanding, no
Employee shall be granted an option under the Plan (i) if, immediately after the
grant, such Employee (or any other person whose stock would be attributed to
such Employee pursuant to Section 424(d) of the Code) would own capital stock of
the Company and/or hold outstanding options to purchase such stock possessing
five percent (5%) or more of the total combined voting power or value of all
classes of the capital stock of the Company or of any Subsidiary, or (ii) which
permits his or her rights to purchase stock under all employee stock purchase
plans of the Company and its subsidiaries to accrue at a rate which exceeds
twenty-five thousand dollars ($25,000) worth of stock (determined at the fair
market value of the shares at the time such option is granted) for each calendar
year in which such option is outstanding at any time.

     4.   Offering Periods. The Plan shall be implemented by consecutive,
overlapping Offering Periods with a new Offering Period commencing on the first
Trading Day on or after April 1 and October 1 each year, or on such other dates
as the Board shall determine, and continuing thereafter until terminated in
accordance with Section 19 hereof. The Board shall have the power to change the
duration of Offering Periods (including the commencement and termination dates
thereof) with respect to future offerings without stockholder approval if such
change is announced at least five (5) days prior to the scheduled beginning of
the first Offering Period to be affected thereafter.

     5.   Participation.

          (a)  An eligible Employee may become a participant in the Plan by
completing a subscription agreement authorizing payroll deductions in the form
of Exhibit A to this Plan and filing it with the Company's payroll office prior
to the applicable Enrollment Date.

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<PAGE>   4

          (b)  Payroll deductions for a participant shall commence on the first
payroll following the Enrollment Date and shall end on the last payroll in the
Offering Period to which such authorization is applicable, unless sooner
terminated by the participant as provided in Section 10 hereof.

     6.   Payroll Deductions.

          (a)  At the time a participant files his or her subscription
agreement, he or she shall elect to have payroll deductions made on each pay day
during the Offering Period in an amount not exceeding ten percent (10%) of the
Compensation which he or she receives on each pay day during the Offering
Period, and the aggregate of such payroll deductions during the Offering Period
shall not exceed ten percent (10%) of the participant's Compensation during said
Offering Period.

          (b)  All payroll deductions made for a participant shall be credited
to his or her account under the Plan and will be withheld in whole percentages
only. A participant may not make any additional payments into such account.

          (c)  A participant may discontinue his or her participation in the
Plan as provided in Section 10 hereof, or may increase or decrease the rate of
his or her payroll deductions during the Offering Period by completing or filing
with the Company a new subscription agreement authorizing a change in payroll
deduction rate. The Board may, in its discretion, limit the number of
participation rate changes during any Offering Period. The change in rate shall
be effective with the first full payroll period following five (5) business days
after the Company's receipt of the new subscription agreement unless the Company
elects to process a given change in participation more quickly. A participant's
subscription agreement shall remain in effect for successive Offering Periods
unless terminated as provided in Section 10 hereof.

          (d)  Notwithstanding the foregoing, to the extent necessary to comply
with Section 423(b)(8) of the Code and Section 3(b) hereof, a participant's
payroll deductions may be decreased to 0% at such time during any Purchase
Period which is scheduled to end during the current calendar year (the "Current
Purchase Period") that the aggregate of all payroll deductions which were
previously used to purchase stock under the Plan in a prior Purchase Period
which ended during that calendar year plus all payroll deductions accumulated
with respect to the Current Purchase Period equal $21,250. Payroll deductions
shall recommence at the rate provided in such participant's subscription
agreement at the beginning of the first Purchase Period which is scheduled to
end in the following calendar year, unless terminated by the participant as
provided in Section 10 hereof.

          (e)  At the time the option is exercised, in whole or in part, or at
the time some or all of the Company's Common Stock issued under the Plan is
disposed of, the participant must make adequate provision for the Company's
federal, state, or other tax withholding obligations, if any, which arise upon
the exercise of the option or the disposition of the Common Stock. At any time,
the Company may, but will not be obligated to, withhold from the participant's
compensation the amount necessary for the Company to meet applicable withholding
obligations, including any

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<PAGE>   5

withholding required to make available to the Company any tax deductions or
benefits attributable to sale or early disposition of Common Stock by the
Employee.

     7.   Grant of Option. On the Enrollment Date of each Offering Period, each
eligible Employee participating in such Offering Period shall be granted an
option to purchase on each Exercise Date during such Offering Period (at the
applicable Purchase Price) up to a number of shares of the Company's Common
Stock determined by dividing such Employee's payroll deductions accumulated
prior to such Exercise Date and retained in the Participant's account as of the
Exercise Date by the applicable Purchase Price; provided that in no event shall
an Employee be permitted to purchase during each Purchase Period more than a
number of Shares determined by dividing $12,500 by the Fair Market Value of a
share of the Company's Common Stock on the Enrollment Date (except if there is
only one Purchase Period in a calendar year, in which case the dollar limit in
the preceding equation shall be $25,000 instead of $12,500), and provided
further that such purchase shall be subject to the limitations set forth in
Sections 3(b) and 12 hereof. Exercise of the option shall occur as provided in
Section 8 hereof, unless the participant has withdrawn pursuant to Section 10
hereof, and shall expire on the last day of the Offering Period.

     8.   Exercise of Option. Unless a participant withdraws from the Plan as
provided in Section 10 hereof, his or her option for the purchase of shares will
be exercised automatically on the Exercise Date, and the maximum number of full
shares subject to option shall be purchased for such participant at the
applicable Purchase Price with the accumulated payroll deductions in his or her
account. No fractional shares will be purchased; any payroll deductions
accumulated in a participant's account which are not sufficient to purchase a
full share shall be retained in the participant's account for the subsequent
Purchase Period or Offering Period, subject to earlier withdrawal by the
participant as provided in Section 10 hereof. Any other monies left over in a
participant's account after the Exercise Date shall be returned to the
participant. During a participant's lifetime, a participant's option to purchase
shares hereunder is exercisable only by him or her.

     9.   Delivery. As promptly as practicable after each Exercise Date on which
a purchase of shares occurs, the Company shall arrange the delivery to each
participant, as appropriate, of a certificate representing the shares purchased
upon exercise of his or her option.

     10.  Withdrawal; Termination of Employment.

          (a)  A participant may withdraw all but not less than all the payroll
deductions credited to his or her account and not yet used to exercise his or
her option under the Plan at any time by giving written notice to the Company in
the form of Exhibit B to this Plan. All of the participant's payroll deductions
credited to his or her account will be paid to such participant promptly after
receipt of notice of withdrawal and such participant's option for the Offering
Period will be automatically terminated, and no further payroll deductions for
the purchase of shares will be made for such Offering Period. If a participant
withdraws from an Offering Period, payroll

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<PAGE>   6

deductions will not resume at the beginning of the succeeding Offering Period
unless the participant delivers to the Company a new subscription agreement.

          (b)  Upon a participant's ceasing to be an Employee (as defined in
Section 2(g) hereof), for any reason, including by virtue of him or her having
failed to remain an Employee of the Company for at least twenty (20) hours per
week during an Offering Period in which the Employee is a participant, he or she
will be deemed to have elected to withdraw from the Plan and the payroll
deductions credited to such participant's account during the Offering Period but
not yet used to exercise the option will be returned to such participant or, in
the case of his or her death, to the person or persons entitled thereto under
Section 14 hereof, and such participant's option will be automatically
terminated.

     11.  Interest. No interest shall accrue on the payroll deductions of a
participant in the Plan.

     12.  Stock.

          (a)  The maximum number of shares of the Company's Common Stock which
shall be made available for sale under the Plan shall be 1,450,000 Shares,
subject to adjustment upon changes in capitalization of the Company as provided
in Section 18 hereof. If, on a given Exercise Date, the number of Shares with
respect to which options are to be exercised exceeds the number of shares then
available under the Plan, the Company shall make a pro rata allocation of the
Shares remaining available for purchase in as uniform a manner as shall be
practicable and as it shall determine to be equitable.

          (b)  The participant will have no interest or voting right in shares
covered by his option until such option has been exercised.

          (c)  Shares to be delivered to a participant under the Plan will be
registered in the name of the participant or in the name of the participant and
his or her spouse.

     13.  Administration. The Plan shall be administered by the Board or a
committee of members of the Board appointed by the Board. The Board or its
committee shall have full and exclusive discretionary authority to construe,
interpret and apply the terms of the Plan, to determine eligibility and to
adjudicate all disputed claims filed under the Plan. Every finding, decision and
determination made by the Board or its committee shall, to the full extent
permitted by law, be final and binding upon all parties. Members of the Board
who are eligible Employees are permitted to participate in the Plan, provided
that:

               (1)  Members of the Board who are eligible to participate in the
Plan may not vote on any matter affecting the administration of the Plan or the
grant of any option pursuant to the Plan.

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<PAGE>   7

               (2)  If a Committee is established to administer the Plan, no
member of the Board who is eligible to participate in the Plan may be a member
of the Committee.

     14.  Designation of Beneficiary.

          (a)  A participant may file a written designation of a beneficiary who
is to receive any shares and cash, if any, from the participant's account under
the Plan in the event of such participant's death subsequent to an Exercise Date
on which the option is exercised but prior to delivery to such participant of
such shares and cash. In addition, a participant may file a written designation
of a beneficiary who is to receive any cash from the participant's account under
the Plan in the event of such participant's death prior to exercise of the
option. If a participant is married and the designated beneficiary is not the
spouse, spousal consent shall be required for such designation to be effective.

          (b)  Such designation of beneficiary may be changed by the participant
at any time by written notice. In the event of the death of a participant and in
the absence of a beneficiary validly designated under the Plan who is living at
the time of such participant's death, the Company shall deliver such shares
and/or cash to the executor or administrator of the estate of the participant,
or if no such executor or administrator has been appointed (to the knowledge of
the Company), the Company, in its discretion, may deliver such shares and/or
cash to the spouse or to any one or more dependents or relatives of the
participant, or if no spouse, dependent or relative is known to the Company,
then to such other person as the Company may designate.

     15.  Transferability. Neither payroll deductions credited to a
participant's account nor any rights with regard to the exercise of an option or
to receive shares under the Plan may be assigned, transferred, pledged or
otherwise disposed of in any way (other than by will, the laws of descent and
distribution or as provided in Section 14 hereof) by the participant. Any such
attempt at assignment, transfer, pledge or other disposition shall be without
effect, except that the Company may treat such act as an election to withdraw
funds from an Offering Period in accordance with Section 10 hereof.

     16.  Use of Funds. All payroll deductions received or held by the Company
under the Plan may be used by the Company for any corporate purpose, and the
Company shall not be obligated to segregate such payroll deductions.

     17.  Reports. Individual accounts will be maintained for each participant
in the Plan. Statements of account will be given to participating Employees at
least annually, which statements will set forth the amounts of payroll
deductions, the Purchase Price, the number of shares purchased and the remaining
cash balance, if any.

     18.  Adjustments Upon Changes in Capitalization, Dissolution, Liquidation,
Merger or Asset Sale.

          (a)  Changes in Capitalization. Subject to any required action by the
stockholders of the Company, the Reserves as well as the price per share of
Common Stock covered by each

                                       7

<PAGE>   8

option under the Plan which has not yet been exercised 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 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.

          (b)  Dissolution or Liquidation. In the event of the proposed
dissolution or liquidation of the Company, the Offering Periods will terminate
immediately prior to the consummation of such proposed action, unless otherwise
provided by the Board.

          (c)  Merger or Asset Sale. In the event of a proposed sale of all or
substantially all of the assets of the Company, or the merger of the Company
with or into another corporation, each option under the Plan shall be assumed or
an equivalent option shall be substituted by such successor corporation or a
parent or subsidiary of such successor corporation. In the event that the
successor corporation refuses to assume or substitute for the option, any
Purchase Periods than in progress shall be shortened by setting a new Exercise
Date (the "New Exercise Date") and any Offering Periods then in progress shall
end on the New Exercise Date. The New Exercise Date shall be prior to the date
of the Company's proposed sale or merger. If the Board sets a new Exercise Date,
the Board shall notify each participant in writing, at least ten (10) business
days prior to the New Exercise Date, that the Exercise Date for his option has
been changed to the New Exercise Date and that his option will be exercised
automatically on the New Exercise Date, unless prior to such date he has
withdrawn from the Offering Periods as provided in Section 10 hereof.

     19.  Amendment or Termination.

          (a)  The Board of Directors of the Company may at any time and for any
reason terminate or amend the Plan. Except as provided in Section 18 hereof, no
such termination can affect options previously granted, provided that an
Offering Period may be terminated by the Board of Directors on any Exercise Date
if the Board determines that the termination of the Plan is in the best
interests of the Company and its stockholders. Except as provided in Section 18
hereof, no amendment may make any change in any option theretofore granted which
adversely affects the rights of any participant. To the extent necessary to
comply with Rule 16b-3 or under Section 423 of the Code (or any successor rule
or provision or any other applicable law or regulation), the Company shall
obtain stockholder approval in such a manner and to such a degree as required.

          (b)  Without stockholder consent and without regard to whether any
participant rights may be considered to have been "adversely affected," the
Board (or its committee) shall be

                                       8

<PAGE>   9

entitled to change the Offering Periods, limit the frequency and/or number of
changes in the amount withheld during an Offering Period, establish the exchange
ratio applicable to amounts withheld in a currency other than U.S. dollars,
permit payroll withholding in excess of the amount designated by a participant
in order to adjust for delays or mistakes in the Company's processing of
properly completed withholding elections, establish reasonable waiting and
adjustment periods and/or accounting and crediting procedures to ensure that
amounts applied toward the purchase of Common Stock for each participant
properly correspond with amounts withheld from the participant's Compensation,
and establish such other limitations or procedures as the Board (or its
committee) determines in its sole discretion advisable which are consistent with
the Plan.

     20.  Notices. All notices or other communications by a participant to the
Company under or in connection with the Plan shall be deemed to have been duly
given when received in the form specified by the Company at the location, or by
the person, designated by the Company for the receipt thereof.

     21.  Conditions Upon Issuance of Shares. Shares shall not be issued with
respect to an option unless the exercise of such option and the issuance and
delivery of such shares pursuant thereto shall comply with all applicable
provisions of law, domestic or foreign, including, without limitation, the
Securities Act of 1933, as amended, the Exchange Act, the rules and regulations
promulgated thereunder, and the requirements of any stock exchange upon which
the shares may then be listed, and shall be further subject to the approval of
counsel for the Company with respect to such compliance.

          As a condition to the exercise of an option, the Company may require
the person exercising such option 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 by any of
the aforementioned applicable provisions of law.

     22.  Term of Plan. The Plan shall become effective upon the earlier to
occur of its adoption by the Board of Directors or its approval by the
stockholders of the Company. It shall continue in effect for a term of ten (10)
years unless sooner terminated under Section 19 hereof.

     23.  Automatic Transfer to Low Price Offering Period. If the Fair Market
Value of the Common Stock on any Exercise Date in an Offering Period is lower
than the Fair Market Value of the Common Stock on the Enrollment Date of such
Offering Period, then all participants in such Offering Period shall be
automatically withdrawn from such Offering Period immediately after the exercise
of their option on such Exercise Date and automatically re-enrolled in the
immediately following Offering Period as of the first day thereof.

                                       9

<PAGE>   10

                                    EXHIBIT A

                        INTEGRATED SILICON SOLUTION, INC.

                        1993 EMPLOYEE STOCK PURCHASE PLAN

                             SUBSCRIPTION AGREEMENT

_____ Original Application                          Enrollment Date: ___________
_____ Change in Payroll Deduction Rate
_____ Change of Beneficiary(ies)

1.   __________________________ hereby elects to participate in the Integrated
     Silicon Solution, Inc. 1993 Employee Stock Purchase Plan (the "Employee
     Stock Purchase Plan") and subscribes to purchase shares of the Company's
     Common Stock in accordance with this Subscription Agreement and the
     Employee Stock Purchase Plan.

2.   I hereby authorize payroll deductions from each paycheck in the amount of
     ____% of my Compensation on each payday (1-10%) during the Offering Period
     in accordance with the Employee Stock Purchase Plan. (Please note that no
     fractional percentages are permitted.)

3.   I understand that said payroll deductions shall be accumulated for the
     purchase of shares of Common Stock at the applicable Purchase Price
     determined in accordance with the Employee Stock Purchase Plan. I
     understand that if I do not withdraw from an Offering Period, any
     accumulated payroll deductions will be used to automatically exercise my
     option.

4.   I have received a copy of the complete "Integrated Silicon Solution, Inc.
     1993 Employee Stock Purchase Plan." I understand that my participation in
     the Employee Stock Purchase Plan is in all respects subject to the terms of
     the Plan. I understand that my ability to exercise the option under this
     Subscription Agreement is subject to obtaining stockholder approval of the
     Employee Stock Purchase Plan.

5.   Shares purchased for me under the Employee Stock Purchase Plan should be
     issued in the name(s) of (Employee or Employee and spouse only): _________
     ____________________________.

                                       1

<PAGE>   11

6.   I understand that if I dispose of any shares received by me pursuant to the
     Plan within 2 years after the Enrollment Date (the first day of the
     Offering Period during which I purchased such shares) or one year after the
     Exercise Date, I will be treated for federal income tax purposes as having
     received ordinary income at the time of such disposition in an amount equal
     to the excess of the fair market value of the shares at the time such
     shares were purchased over the price which I paid for the shares. I HEREBY
     AGREE TO NOTIFY THE COMPANY IN WRITING WITHIN 30 DAYS AFTER THE DATE OF ANY
     DISPOSITION OF MY SHARES AND I WILL MAKE ADEQUATE PROVISION FOR FEDERAL,
     STATE OR OTHER TAX WITHHOLDING OBLIGATIONS, IF ANY, WHICH ARISE UPON THE
     DISPOSITION OF THE COMMON STOCK. The Company may, but will not be obligated
     to, withhold from my compensation the amount neces sary to meet any
     applicable withholding obligation including any withholding necessary to
     make available to the Company any tax deductions or benefits attributable
     to sale or early disposition of Common Stock by me. If I dispose of such
     shares at any time after the expiration of the 2-year and 1-year holding
     periods, I understand that I will be treated for federal income tax
     purposes as having received income only at the time of such disposition,
     and that such income will be taxed as ordinary income only to the extent of
     an amount equal to the lesser of (1) the excess of the fair market value of
     the shares at the time of such disposition over the purchase price which I
     paid for the shares, or (2) 15% of the fair market value of the shares on
     the first day of the Offering Period. The remainder of the gain, if any,
     recognized on such disposition will be taxed as capital gain.

7.   I hereby agree to be bound by the terms of the Employee Stock Purchase
     Plan. The effectiveness of this Subscription Agreement is dependent upon my
     eligibility to participate in the Employee Stock Purchase Plan.

8.   In the event of my death, I hereby designate the following as my
     beneficiary(ies) to receive all payments and shares due me under the
     Employee Stock Purchase Plan:

NAME:  (Please print)
                     -----------------------------------------------------------
                           (First)           (Middle)              (Last)

---------------------------------          -------------------------------------
Relationship

                                           -------------------------------------
                                           (Address)

                                       2

<PAGE>   12

Employee's Social
Security Number:
                                            ------------------------------------

Employee's Address:
                                            ------------------------------------

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

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

I UNDERSTAND THAT THIS SUBSCRIPTION AGREEMENT SHALL REMAIN IN EFFECT THROUGHOUT
SUCCESSIVE OFFERING PERIODS UNLESS TERMINATED BY ME.

Dated:
      --------------------------            ------------------------------------
                                            Signature of Employee

                                            ------------------------------------
                                            Spouse's Signature (If beneficiary
                                            is other than spouse)

                                       3

<PAGE>   13

                                    EXHIBIT B

                        INTEGRATED SILICON SOLUTION, INC.

                        1993 EMPLOYEE STOCK PURCHASE PLAN

                              NOTICE OF WITHDRAWAL

     The undersigned participant in the Offering Period of the Integrated
Silicon Solution, Inc. 1993 Employee Stock Purchase Plan which began on
____________, 19____ (the "Enrollment Date") hereby notifies the Company that he
or she hereby withdraws from the Offering Period. He or she hereby directs the
Company to pay to the undersigned as promptly as practicable all the payroll
deductions credited to his or her account with respect to such Offering Period.
The undersigned understands and agrees that his or her option for such Offering
Period will be automatically terminated. The undersigned understands further
that no further payroll deductions will be made for the purchase of shares in
the current Offering Period and the undersigned shall be eligible to participate
in succeeding Offering Periods only by delivering to the Company a new
Subscription Agreement.

                                            Name and Address of Participant:

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

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

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

                                            Signature:

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

                                            Date:
                                                 -------------------------------

                                       4

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