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                                                                   EXHIBIT 10.73


                      NON-QUALIFIED STOCK OPTION AGREEMENT
                      ------------------------------------

               THIS AGREEMENT is dated as of the ___ day of ____________, 1998,
and is between ALPHA MICROSYSTEMS, a California corporation (the "Corporation"),
and ____________ (the "Optionee").


                              W I T N E S S E T H:
                              - - - - - - - - - -

               WHEREAS, pursuant to the Alpha Microsystems 1998 Stock Option and
Award Plan (the "Plan"), the Corporation has granted to the Optionee, effective
as of _______________, 19__ (the "Award Date"), a non-qualified stock option to
purchase all or any part of _____________ authorized but unissued shares of
Common Stock of the Corporation upon the terms and conditions set forth herein
and in the Plan.

               NOW, THEREFORE, in consideration of the mutual promises and
covenants made herein and the mutual benefits to be derived herefrom, the
parties agree as follows:

               1. Defined Terms. Capitalized terms used herein and not otherwise
defined herein shall have the meaning assigned to such terms in the Plan.

               2. Grant of Option. This Agreement evidences the Corporation's
grant to the Optionee of the right and option to purchase, on the terms and
conditions set forth herein and in the Plan, all or any part of an aggregate of
______ shares of the Common Stock at the price of $_________ per share (the
"Option"), exercisable from time to time, subject to the provisions of this
Agreement and the Plan, prior to the close of business on the day before the
tenth anniversary of the Award Date (the "Expiration Date"). This Option is not
intended to constitute an incentive stock option within the meaning of Section
422 of the Internal Revenue Code of 1986, as amended (the "Code").

               3. Exercisability of Option. Except as earlier permitted by or
pursuant to the Plan or by resolution of the Administrator adopted after the
date hereof, no shares may be purchased by exercise of the Option until the
expiration of six months after the Award Date. The Option may be exercised in
installments as to ___% of the aggregate number of shares set forth in Section 2
hereof on and after the _______ anniversary of the Award Date and as to an
additional ___% of such aggregate number of such shares on each of the
___________ and ______________ anniversaries of the Award Date.

               To the extent the Optionee does not in any year purchase all or
any part of the shares to which the Optionee is entitled, the Optionee has the
right cumulatively thereafter to 


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purchase any shares not so purchased and such right shall continue until the
Option terminates or expires. Fractional share interests shall be disregarded,
but may be cumulated.

               4. Method of Exercise of Option.

                      (a) The Option shall be exercisable by the delivery to the
        Corporation of a written notice stating the number of shares to be
        purchased pursuant to the Option and accompanied by payment made in
        accordance with and in a form permitted by Section 5(c)(iv) of the Plan
        for the full purchase price of the shares to be purchased, subject to
        such further limitations and rules or procedures as the Administrator
        may from time to time establish as to any non-cash payment. Shares
        delivered in payment of the exercise price must have been owned by
        Optionee for at least six moths prior to the exercise. In addition, the
        Optionee shall furnish any written statements required pursuant to
        Section 12(a) of the Plan.

                      (b) The Corporation may require that the Optionee enter
        into an arrangement providing for the payment by the Optionee to the
        Corporation of any tax withholding obligation of the Corporation arising
        by reason of (1) the exercise of the Option; or (2) the lapse of any
        substantial risk of forfeiture to which the shares are subject at the
        time of exercise.

               5. Conditions to Exercise. Notwithstanding anything to the
contrary contained herein, the Option may not be exercised unless the shares
issuable upon exercise of the Option are then registered under the Securities
Act of 1933, as amended (the "Securities Act") or, if such shares are not then
so registered, the Corporation has determined that such exercise and issuance
would be exempt from the registration requirements of the Securities Act. If the
Corporation, in its sole discretion, shall determine that it is necessary to
comply with applicable securities laws, the certificate or certificates
representing the shares issuable upon exercise of the Option shall bear an
appropriate legend in form and substance, as determined by the Corporation,
giving notice of applicable restrictions on transfer under or in respect of such
laws.

               6. Effect of Termination of Employment or Death; Change in
Subsidiary Status. The Option and all other rights hereunder, to the extent not
exercised, shall terminate and become null and void at such time as the Optionee
ceases to be employed or engaged by either the Corporation or any Subsidiary,
except that:

                      (a) if the Optionee voluntarily terminates or resigns, the
        Optionee may at any time within a period of three months after such
        termination exercise the Option to the extent the Option was exercisable
        at the date of such termination;

                      (b) if the Optionee terminates by reason of becoming
        permanently and totally disabled (within the meaning of Code Section
        22(e)(3)), then the Option shall, to the extent not theretofore
        exercised, fully vest and may be exercised within a period of one year
        after the Optionee's termination from employment;


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                      (c) if the Optionee dies prior to a termination of
        employment, or within three months after a termination of employment
        under subsection (a) or (b) above, then the Option may be exercised
        within a period of one year after the Optionee's termination from
        employment pursuant to the provisions of Section 5(g) of the Plan;

provided, however, that in no event may the Option be exercised by anyone under
this Section or otherwise after the Expiration Date. If Optionee is employed or
engaged by an entity which ceases to be a Subsidiary, such event shall be deemed
for purposes of this Section 6 to be a termination described in subsection (a)
in respect of Optionee.

               7. Investment Representation. The Optionee hereby covenants and
agrees with the Corporation that if, at the time of exercise of the Option,
there does not exist a Registration Statement on an appropriate form under the
Securities Act, which Registration Statement shall have become effective and
shall include a prospectus which is current with respect to the shares subject
to the Option, (i) that the Optionee is purchasing the shares for the Optionee's
own account and not with a view to the resale or distribution thereof, (ii) that
any subsequent offer for sale or sale of any such shares shall be made either
pursuant to (x) a Registration Statement on an appropriate form under the Act,
which Registration Statement shall have become effective and shall be current
with respect to the shares being offered and sold, or (y) a specific exemption
from the registration requirements of the Act, but in claiming such exemption,
the Optionee shall, prior to any offer for sale of sale of such shares, obtain a
favorable written opinion from counsel for or approved by the Corporation as to
the applicability of such exemption and (iii) that the Optionee agrees that the
certificates evidencing such shares shall bear a legend to the effect of the
foregoing.

               8. Non-Transferability of Option. The Option and any other rights
of the Optionee under this Agreement or the Plan are nontransferable except as
provided in Section 5(f) of the Plan.

               9. Notices. Any notice to be given under the terms of this
Agreement shall be in writing and addressed to the Corporation at its principal
office located at 2722 South Fairview Street, Santa Ana, California 92704, to
the attention of the Chief Financial Officer and to the Optionee at the address
given beneath the Optionee's signature hereto, or at such other address as
either party may hereafter designate in writing to the other.

               10. Plan. The Option and all rights of Optionee thereunder are
subject to, and the Optionee agrees to be bound by, all of the terms and
conditions of the provisions of the Plan, incorporated herein by this reference,
to the extent such provisions are applicable to options granted to Optionee. The
Optionee acknowledges receipt of a copy of the Plan, which is made a part hereof
by this reference, and agrees to be bound by the terms thereof. Unless otherwise
expressly provided in other Sections of this Agreement, provisions of the Plan
that confer discretionary authority on the Administrator do not (and shall not
be deemed to) create any rights in the Optionee unless such rights are expressly
set forth herein or are otherwise in the sole discretion of the Administrator so
conferred by appropriate action of the Administrator under the Plan after the
date hereof.


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               IN WITNESS WHEREOF, the Corporation has caused this Agreement to
be executed on its behalf by a duly authorized officer and the Optionee has
hereunto set his or her hand.

                                          ALPHA MICROSYSTEMS,
                                          a California corporation


                                          By:___________________________________
                                             Name:______________________________
                                             Title:_____________________________


                                          OPTIONEE

                                          ______________________________________
                                          (Signature)

                                          ______________________________________
                                          (Print Name)

                                          ______________________________________
                                          (Address)

                                          ______________________________________
                                          (City, State, Zip Code)


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