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                                                                    EXHIBIT 10.2

                               ASECO CORPORATION

                 1993 NON-EMPLOYEE DIRECTOR STOCK OPTION PLAN
            (Amended and Restated Effective as of October 18, 1996)

     1.  Purpose. This Non-Qualified Stock Option Plan, to be known as the 1993 
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Non-Employee Director Stock Option Plan (hereinafter, this "Plan") is intended
to promote the interests of Aseco Corporation (hereinafter, the "Company") by 
providing an inducement to obtain and retain the services of qualified persons 
who are not employees or officers of the Company to serve as members of its 
Board of Directors (the "Board").

     2.  Available Shares. The total number of shares of Common Stock, par value
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$.01 per share, of the Company (the "Common Stock"), for which options may be 
granted under this Plan shall not exceed 165,000 shares, subject to adjustment 
in accordance with paragraph 10 of this Plan. Shares subject to this Plan are 
authorized but unissued shares or shares that were once issued and subsequently 
reacquired by the Company. If any options granted under this Plan are 
surrendered before exercise or lapse without exercise, in whole or in part, the 
shares reserved therefor shall continue to be available under this Plan.

     3.  Administration. This Plan shall be administered by the Board or by a 
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committee appointed by the Board (the "Committee"). In the event the Board fails
to appoint or refrains from appointing a Committee, the Board shall have all 
power and authority to administer this Plan. In such event, the word "Committee"
wherever used herein shall be deemed to mean the Board. The Committee shall, 
subject to the provisions of the Plan, have the power to construe this Plan, to 
determine all questions hereunder, and to adopt and amend such rules and 
regulations for the administration of this Plan as it may deem desirable.

     4.  Granting of Options.
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         (a)  Initial Grant. On the effective date of a registration statement 
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on Form S-1 covering the initial public offering of the Company's Common Stock 
(the "Effective Date"), each person who is then a member of the Board, and who 
is not a current or former employee or officer of the Company, shall be 
automatically granted, without further action by the Board, an option to 
purchase 3,000 shares of the Common Stock.

         (b)  Initial Grant to New Directors. Subject to the availability of 
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shares under this Plan, each person who is first elected as a member of the 
Board after May 15, 1996 and during the term of this Plan, and who is not on the
date of such election a current or former employee or officer of the Company, 
shall be automatically granted an option to purchase 15,000 shares of the Common
Stock on the date of his or her first election as a member of the Board.

         (c) Automatic Grants. On April 30 of each year commencing April 30, 
1996 and during the term of this Plan, each person who is then serving on the 
Board, and who is not a current or former employee or officer of the Company, 
shall automatically be granted an option
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to purchase 2,500 shares of the Common Stock, subject to the availability of 
shares under this Plan.

           (d)   Initial Option Adjuster.  On May 15, 1996, each person who is 
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serving on the Board as of such date, who is not a current or former employee or
officer of the Company and who is to serve on the Board following the 1996 
Annual Meeting of Stockholders of the Company shall automatically be granted an 
option to purchase an additional 10,000 shares of Common Stock.

     Except for the specific options referred to above, no other options shall 
be granted under this Plan.

     5.    Option Price.  The purchase price of the stock covered by an option 
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granted pursuant to this Plan shall be 100% of the fair market value of such 
shares on the day the option is granted.  The option price will be subject to 
adjustment in accordance with the provisions of paragraph 10 of this Plan.  For 
purposes of this Plan, if, at the time an option is granted under the Plan, the 
Company's Common Stock is publicly traded, "fair market value" shall be 
determined as of the last business day for which the prices or quotes discussed 
in this sentence are available prior to the date such option is granted and 
shall mean (i) the average (on that date) of the high and low prices of the 
Common Stock on the principal national securities exchange on which the Common 
Stock is traded, if the Common Stock is then traded on a national securities 
exchange; or (ii) the last reported sale price (on that date) of the Common 
Stock on the Nasdaq National Market System, if the Common Stock is not then 
traded on a national securities exchange; or (iii) the closing bid price (or 
average of bid prices) last quoted (on that date) by an established quotation 
service for over-the-counter National Market System.  If, at the time an option 
is granted under the Plan, the Company's stock is not publicly traded, "fair 
market value" shall be the fair market value on the date the option is granted 
as determined by the Board in good faith.

     6.    Period of Option.  Unless sooner terminated in accordance with the 
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provisions of paragraph 8 of this Plan, an option granted hereunder shall expire
on the date which is ten (10) years after the date of grant of the option.

     7.    Vesting of Shares and Non-Transferability of Options.
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           (a)   Vesting.  Options granted under this Plan shall not be 
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exercisable until they become vested.  Options granted pursuant to Sections 
4(b), 4(c) and 4(d) of this Plan shall vest in the optionee and thus become 
exercisable immediately by the optionee in two annual installments of 50% each 
on the first and second anniversary of the date of grant.  Options granted 
pursuant to Section 4(a) of the Plan shall be 100% vested on the date of grant 
and thus be fully exercisable at any time prior to their expiration.

           (b)   Legend on Certificates.  The certificates representing such 
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shares shall carry such appropriate legend, and such written instructions shall 
be given to the Company's transfer

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agent, as may be deemed necessary or advisable by counsel to the Company in 
order to comply with the requirements of the Securities Act of 1933 or any state
securities laws.

           (c)   Non-transferability.  Any option granted pursuant to this Plan 
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shall not be assignable or transferable other than by will or the laws of 
descent and distribution or pursuant to a domestic relations order and shall be 
exercisable during the optionee's life time only by him or her.

     8.    Termination of Option Rights.
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           (a)   In the event an optionee ceases to be a member of the Board for
any reason other than death or permanent disability, any then unexercised 
portion of options granted to such optionee shall, to the extent not then 
vested, immediately terminate and become void; any portion of an option which is
then vested but has not been exercised at the time the optionee so ceases to be 
a member of the Board may be exercised, to the extent it is then vested, by the 
optionee within two years of the date the optionee ceased to be a member of the 
Board; and all options shall terminate after such two year period has have 
expired.

           (b)   In the event that an optionee ceases to be a member of the 
Board by reason of his or her death or permanent disability, any option granted 
to such optionee shall be immediately, and automatically accelerated and become 
fully vested and all unexercised options shall be exercisable by the optionee 
(or by the optionee's personal representative, heir or legatee, in the event of 
death) until the scheduled expiration date of the option.

     9.    Exercise of Option.  Subject to the terms and conditions of this Plan
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and the option agreement, an option granted hereunder shall, to the extent then 
exercisable, be exercisable in whole or in part by giving written notice to the 
Company by mail or in person addressed to Aseco Corporation, 500 Donald Lynch 
Boulevard, Marlboro, Massachusetts 01752, Attention:  Chief Financial Officer, 
stating the number of shares with respect to which the option is being 
exercised, accompanied by payment in full for such shares.  Payment may be (a) 
in United States dollars in cash or by check, (b) in whole or in part in shares 
of Common Stock of the Company already owned by the person or persons 
exercising the option or shares subject to the option being exercised (subject 
to such restrictions and guidelines as the Board may adopt from time to time), 
valued at fair market value determined in accordance with the provisions of 
paragraph 5 or (c) consistent with applicable law, through the delivery of an 
assignment to the Company of a sufficient amount of the proceeds from the sale 
of the Common Stock acquired upon exercise of the option and an authorization 
to the broker or selling agent to pay that amount to the Company, which sale 
shall be at the participant's direction at the time of exercise.  There shall be
no such exercise at any one time as to fewer than one hundred (100) shares or 
all of the remaining shares then purchasable by the person or persons exercising
the option, if fewer than one hundred (100) shares.  The Company's transfer 
agent shall, on behalf of the Company, prepare a certificate or certificates 
representing such shares acquired pursuant to exercise of the option, shall 
register the optionee as the owner of such shares on the books of the Company 
and shall cause the fully executed certificates(s) representing such shares to 
be delivered to the optionee as soon as

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practicable after payment of the option price in full. The holder of an option 
shall not have any rights of a stockholder with respect to the shares covered by
the option, except to the extent that one or more certificates for such shares 
shall be delivered to him or her upon the due exercise of the option.

        10. Adjustments Upon Changes in Capitalization and Other Matters. Upon 
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the occurrence of any of the following events, an optionee's rights with respect
to options granted to him or her hereunder shall be adjusted as hereinafter
provided:

            (a) If, after January 18, 1993, the shares of Common Stock shall be 
subdivided or combined into a greater smaller number of shares or if the Company
shall issue any shares of Common Stock as a stock dividend on its outstanding 
Common Stock, the number of shares of Common Stock deliverable upon the exercise
of options shall be appropriately increased or decreased proportionately, and 
appropriate adjustments shall be made in the purchase price per share to reflect
such subdivision, combination or stock dividend. No adjustment, however, shall 
be made for the 1-for-2.4 reverse split of the Common Stock declared by the 
Board on January 18, 1993.

            (b) Merger; Consolidation; Liquidation; Sale of Assets. In the event
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the Company is merged into or consolidated with another corporation under 
circumstances where the Company is not the surviving corporation, or if the 
Company is liquidated or sells or otherwise disposes of all or substantially all
of its assets to another corporation while unexercised options remain 
outstanding under the Plan, (i) subject to the provisions of clauses (iii), (iv)
and (v) below, after the effective date of such merger, consolidation or sale, 
as the case may be, each holder of an outstanding option shall be entitled, upon
exercise of such option, to receive in lieu of shares of Common Stock, shares of
such stock or other securities as the holders of shares of Common Stock received
pursuant to the terms of the merger, consolidation or sale; or (ii) the Board 
may waive any discretionary limitations imposed with respect to the exercise of 
the option so that all options from and after a date prior to the effective date
of such merger, consolidation, liquidation or sale, as the case may be, 
specified by the Board, shall be exercisable in full; or (iii) all 
outstanding options may be cancelled by the Board as of the effective date of 
any such merger, consolidation, liquidation or sale, provided that notice of 
such cancellation shall be given to each holder of an option, and each such 
holder thereof shall have the right to exercise such option in full (without 
regard to any discretionary limitations imposed with respect to the option) 
during a 30-day period preceding the effective date of such merger, 
consolidation, liquidation or sale; or (iv) all outstanding options may be 
cancelled by the Board as of the date of any such merger, consolidation, 
liquidation or sale, provided that notice of such cancellation shall be given to
each holder of an option and each such holder thereof shall have the right to 
exercise such option but only to the extent exercisable in accordance with any 
discretionary limitations imposed with respect to the option prior to the 
effective date of such merger, consolidation, liquidation or sale; or (v) the 
Board may provide for the cancellation of all outstanding options and for the 
payment to the holders thereof of some part or all of the amount by which the 
value thereof exceeds the payment, if any, which the holder would have been 
required to make to exercise such option.

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          (c)  Issuance of Securities. Except as expressly provided herein, no 
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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 
subject to options. No adjustments shall be made for dividends paid in cash or 
in property other than securities of the Company.

          (d)  Adjustments. Upon the happening of any of the foregoing events, 
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the class and aggregate number of shares set forth in paragraph 2 of this Plan 
that are subject to options which previously have been or subsequently may be 
granted under this Plan shall also be appropriately adjusted to reflect such 
events. The Board shall determine the specific adjustments to be made under this
paragraph 10 and its determination shall be conclusive.

     11.  Restrictions on Issuance of Shares. Notwithstanding the provisions of 
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paragraphs 4 and 9 of this Plan, the Company shall have no obligation to deliver
any certificate or certificates upon exercise of an option until one of the 
following conditions shall be satisfied:

          (i)  The shares with respect to which the option has been exercised 
     are at the time of the issue of such shares effectively registered under 
     applicable Federal and state securities laws as now in force or hereafter 
     amended; or

          (ii) Counsel for the Company shall have given an opinion that such 
     shares are exempt from registration under Federal and state securities
     laws as now in force or hereafter amended; and the Company has complied
     with all applicable laws and regulations with respect thereto, including
     without limitation all regulations required by any stock exchange upon
     which the Company's outstanding Common Stock is then listed.

     12.  Representation of Optionee. If requested by the Company, the optionee 
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shall deliver to the Company written representations and warranties upon 
exercise of the option that are necessary to show compliance with Federal and 
state securities laws, including representations and warranties to the effect 
that a purchase of shares under the option is made for investment and not with a
view to their distribution (as that term is used in Securities Act of 1933).

     13.  Option Agreement. Each option granted under the provisions of this 
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Plan shall be evidenced by an option agreement, which agreement shall be duly 
executed and delivered on behalf for the Company and by the optionee to whom 
such option is granted. The option agreement shall contain such terms, 
provisions and conditions not inconsistent with this Plan as may be determined 
by the officer executing it.

     14.  Termination and Amendment of Plan. Options may no longer be granted 
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under this plan after January 18, 2003, and this Plan shall terminate when all 
options granted or to be granted hereunder are no longer outstanding. The Board 
may at any time terminate this Plan or

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make such modification or amendment thereof as it deems advisable; provided, 
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however, that the Board may not, without approval by the affirmative vote of the
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holders of a majority of the shares of Common Stock present in person or by 
proxy and entitled to vote at the meeting, (a) increase the maximum number of 
shares for which options may be granted under this Plan (except by adjustment 
pursuant to Section 10), (b) materially modify the requirements as to 
eligibility to participate in this Plan, (c) materially increase benefits 
accruing to option holders under this Plan, or (d) amend this Plan in any manner
which would cause Rule 16b-3 to become inapplicable to this Plan; and provided 
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further that the provisions of this Plan specified in Rule 16b-3(c)(2)(ii)(A) 
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(or any successor or amended provison thereof) under the Securities Exchange Act
of 1934 (including without limitation, provisions as to eligibility, amount, 
price and timing of awards) may not be amended more than once every six months, 
other than to comport with changes in the Internal Revenue Code, the Employee 
Retirement Income Security Act, or the rules thereunder. Termination or any 
modification or amendment of this Plan shall not, without consent of a 
participant, affect his or her rights under an option previously granted to him 
or her. 

     15.  Withholding of Income Taxes. Upon the exercise of an option, the 
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Company, in accordance with Section 3402(a) of the Internal Revenue Code, may 
require the optionee to pay withholding taxes in respect of amounts considered 
to be compensation includible in the optionee's gross income.

     16.  Compliance with Regulations. It is the Company's intent that the Plan 
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comply with all respects with Rule 16b-3 under the Securities Exchange Act of 
1934 (or any successor or amended version thereof) and any applicable Securities
and Exchange Commission interpretations thereof. If any provision of this Plan 
is deemed not to be in compliance with Rule 16b-3, the provision shall be null 
and void.

     17.  Governing Law. The validity and construction of this Plan and the 
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instruments evidencing options shall be governed by the laws of The Commonwealth
of Massachusetts, without giving effect to the principles of law thereof.

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