Document:

<PAGE>   1
                                                                   EXHIBIT 10.30

                                 PROMISSORY NOTE

                           $500,000 September 30, 1999

                                                              Irvine, California

      The undersigned, General Automation, Inc., a Delaware corporation, for
value received, promises to pay to the order of Radisys CPD, Inc., or any
assignee (the "Holder"), the sum of Five Hundred Thousand Dollars ($500,000),
together with interest on unpaid principal as provided below. This Note has been
executed and delivered pursuant to that certain letter agreement of even date
herewith between the undersigned and Radisys CPD, Inc. (the "Letter Agreement").

      The following is a statement of the rights of the Holder of this Note and
the conditions to which this Note is subject:

1. INTEREST. The unpaid principal balance of this Note outstanding from time to
time shall bear interest from the date hereof until paid at the rate of ten
percent (10%) per annum.

2. PAYMENTS. Subject to Section 3 below, the entire principal amount of this
Note, together with all accrued interest thereon, shall be due and payable on
the earlier to occur of the date which is one hundred twenty (120) days
following the date of this Note (the "Maturity Date"); or the third business day
following the closing of a loan to the undersigned pursuant to that certain Loan
Agreement (the "Loan Agreement") of even date herewith between the undersigned
and Pacific Mezzanine Fund LLP ("PMF"), which loan yields net proceeds to the
undersigned of not less than One Million Dollars ($1,000,000), excluding the
initial $3,150,000 loaned by PMF to the Company pursuant to the Loan Agreement
(a "Qualifying Financing").

3. SATISFACTION OF OBLIGATIONS BY UNDERSIGNED. Notwithstanding Section 2 above,
in the event that a Qualifying Financing has not been consummated on or before
the Maturity Date, the undersigned may, in its sole discretion, by written
notice given by the undersigned to the Holder, elect to satisfy the
undersigned's entire obligation under this Note by executing and delivering to
the Holder a Secured Convertible Promissory Note with an original principal
amount equal to the sum of the then outstanding principal balance of this Note
and all accrued but unpaid interest then owed on this Note, upon and subject to
the terms and conditions stated in the Letter Agreement.

4. PREPAYMENT. The undersigned may at any time prepay this Note in whole or in
part. All payments made on this Note shall be applied first to accrued interest,
and the balance of such payment, if any, shall be applied to principal, and
interest shall thereupon cease upon the principal so credited.

5. HEADINGS. The headings of this Note have been inserted as a matter of
convenience and shall not affect the construction hereof.

<PAGE>   2

6. APPLICABLE LAW. This Note shall be governed by and construed in accordance
with the internal laws of the State of California.

7. TIME IS OF THE ESSENCE. Time is of the essence of this Note.

8. ATTORNEYS' FEES. In the event this Note is placed in the hands of an attorney
for collection, or if the Holder incurs any costs incident to the collection of
the indebtedness evidenced hereby, the undersigned and any endorsers hereof
agree to pay to the Holder an amount equal to all such costs, including without
limitation all actual reasonable attorney's fees and all court costs.

9. WAIVER. The payor and any guarantors and endorsers hereof expressly waive
diligence, presentment, protest and demand, and notice of protest, demand,
dishonor and nonpayment of this Note. No acceptance of a partial payment or
other indulgences granted from time to time shall be construed as a novation of
this Note or as a waiver of the right of the Holder thereafter to insist upon
strict compliance with the terms of this Note or to prevent the exercise of any
right granted hereunder or by applicable laws. No extension of the time for
payment of the indebtedness evidenced hereby, made by agreement with any person
now or hereafter liable for payment of the indebtedness evidenced hereby, shall
operate to release, discharge, modify, change or affect the original liability
of the undersigned hereunder or that of any other person now or hereafter liable
for payment of the indebtedness evidenced hereby, either in whole or in part,
unless the Holder agrees otherwise in writing. This Note may not be changed
orally, but only by an agreement in writing signed by the party against whom
enforcement of any waiver, change, modification or discharge is sought.

      IN WITNESS WHEREOF, the undersigned, General Automation, Inc., has
executed this Note.

                                            GENERAL AUTOMATION, INC.

                                            By:
                                                --------------------------------

                                            Its:
                                                --------------------------------

<PAGE>   3

                                 PROMISSORY NOTE

                        $500,000     September 30, 1999

                                                              Irvine, California

      The undersigned, General Automation, Inc., a Delaware corporation, for
value received, promises to pay to Boundless Technologies, Inc., a Delaware
corporation formerly known as SunRiver Data Systems, or order (the "Holder"),
the sum of five Hundred Thousand Dollars ($500,000), together with interest on
unpaid principal as provided below. This Note has been executed and delivered
pursuant to that certain letter agreement of even date herewith between the
undersigned and Boundless Technologies, Inc. (the "Letter Agreement").

      The following is a statement of the rights of the Holder of this Note and
the conditions to which this Note is subject:

1. INTEREST. The unpaid principal balance of this Note outstanding from time to
time shall bear interest from the date hereof until paid at the rate of ten
percent (10%) per annum.

2. PAYMENTS. Subject to Section 3 below, the entire principal amount of this
Note, together with all accrued interest thereon, shall be due and payable on
the earlier to occur of the date which is one hundred twenty (120) days
following the date of this Note (the "Maturity Date"); or the third business day
following the closing of a loan to the undersigned pursuant to that certain Loan
Agreement (the "Loan Agreement") of even date herewith between the undersigned
and Pacific Mezzanine Fund LLP ("PMF"), which loan yields net proceeds to the
undersigned of not less than One Million Fifty Thousand Dollars ($1,050,000),
excluding the initial $3,150,000 loaned by PMF to the Company pursuant to the
Loan Agreement; or the third business day following the closing of any other
debt or equity financing (other than the refinancing of the undersigned's real
property in Irvine, California) which yields gross proceeds to the undersigned
of not less than One Million Fifty Thousand Dollars ($1,050,000); or the third
business day following the closing of any refinancing of the undersigned's real
property in Irvine, California, which yields net proceeds to the undersigned of
not less than One Million Dollars ($1,000,000). (For purposes of this Note, each
of the financings described in clauses (b), (c) and (b) above is referred to as
a "Qualifying Financing").

3. SATISFACTION OF OBLIGATIONS BY UNDERSIGNED. Notwithstanding Section 2 above,
in the event that a Qualifying Financing has not been consummated on or before
the Maturity Date, the undersigned may, in its sole discretion, by written
notice given by the undersigned to the Holder, elect to satisfy the
undersigned's entire obligation under this Note by executing and delivering to
the Holder a Secured Convertible Promissory Note with an original principal
amount equal to the sum of the then outstanding principal balance of this Note
and all accrued but unpaid interest then owed on this Note, upon and subject to
the terms and conditions stated in the Letter Agreement.

                                   EXHIBIT B

4. PREPAYMENT. The undersigned may at any time prepay this Note in whole or in
part. All payments made on this Note shall be applied first to accrued interest,
and the balance of

<PAGE>   4

such payment, if any, shall be applied to principal, and interest shall
thereupon cease upon the principal so credited.

5. HEADINGS. The headings of this Note have been inserted as a matter of
convenience and shall not affect the construction hereof.

6. APPLICABLE LAW. This Note shall be governed by and construed in accordance
with the internal laws of the State of California.

7. TIME IS OF THE ESSENCE. Time is of the essence of this Note.

8. ATTORNEYS' FEES. In the event any action, suit, couterclaim, appeal,
arbitration, or mediation for any relief, declaratory or otherwise, pertaining
to enforcement of the terms of this Note or to the declaration of rights
hereunder (collectively, an "Action"), the losing party shall pay to the
prevailing party a reasonable sum for attorneys' fees and costs (at the
prevailing party's attorneys' then-prevailing rates) incurred in bringing and
prosecuting such action and/or enforcing any judgment, order, ruling, or award
(collectively, a "Decision") granted therein, all of which shall be deemed to
have accrued on the commencement of such Action and shall be paid whether or not
such Action is prosecuted to a Decision. Any Decision entered in such Action
shall contain a specific provision providing for the recovery for attorneys'
fees and costs incurred in enforcing such Decision. The court or arbitrator may
fix the amount of reasonable attorneys' fees and costs on the request of either
party. For the purposes of this section, attorneys' fees shall include, without
limitation, fees incurred in the following: postjudgment motions and collection
actions; contempt proceedings; garnishment, levy, and debtor and third party
examinations; discovery; and bankruptcy litigation. "Prevailing party" within
the meaning of this section includes a party who agrees to dismiss an Action on
the other party's payment of the sums allegedly due or performance of the
covenants allegedly breached, or who obtains substantially the relief sought by
it.

9. WAIVER. The payor and any guarantors and endorsers hereof expressly waive
diligence, presentment, protest and demand, and notice of protest, demand,
dishonor and nonpayment of this Note.

      IN WITNESS WHEREOF, the undersigned, General Automation, Inc., has
executed this Note.

                                            GENERAL AUTOMATION, INC.

                                            By:
                                                --------------------------------

                                            Its:
                                                --------------------------------<PAGE>   1
                                                                   EXHIBIT 10.31

                          REGISTRATION RIGHTS AGREEMENT

        THIS REGISTRATION RIGHTS AGREEMENT, dated September 30, 1999, is entered
into by General Automation, Inc., a Delaware corporation (the "Company"), and
Radisys CPD, Inc., a Delaware corporation formerly known as Texas Micro, Inc.
and also formerly known as Sequoia Systems, Inc. ("Radisys").

1. Definitions. Unless the context otherwise requires, the terms defined in this
Section 1 shall have the meanings herein specified for all purposes of this
Agreement, applicable to both the singular and plural forms of any of the terms
herein defined.

        1.1 Agreement. "Agreement" means this Registration Rights Agreement.

        1.2 Board. "Board" means the Board of Directors of the Company.

        1.3 Commission. "Commission" means the United States Securities and
Exchange Commission.

        1.4 Common Stock. "Common Stock" means the Common Stock of the Company.

        1.5 Holder. "Holder" of any security means the record owner of such
security.

        1.6 Radisys' Registrable Securities. "Radisys' Registrable Securities"
means the 1,133,333 shares of Common Stock to be issued by the Company to
Radisys pursuant to that certain letter agreement of even date herewith between
the Company and Radisys ; and any securities issued or issuable with respect to
the Common Stock referred to in clause (a) above by way of a stock dividend or
stock split or in connection with a combination of shares, reclassification,
recapitalization, merger or consolidation or reorganization; provided, however,
that such shares of Common Stock shall only be treated as Radisys' Registrable
Securities if and so long as they have not been (i) sold to or through a broker
or dealer or underwriter in a public distribution or a public securities
transaction; or (ii) sold in a transaction exempt from the registration and
prospectus delivery requirements of the Securities Act under Section 4(1)
thereof or other applicable exemption so that all transfer restrictions and
restrictive legends with respect to such Common Stock are removed upon the
consummation of such sale.

        1.7 Other Registrable Securities. "Other Registrable Securities" means
all Common Stock, whether now outstanding or hereafter issued, which the Company
has agreed to register, or may hereafter agree to register.

                                    EXHIBIT C
<PAGE>   2

        1.8 Person. "Person" includes any natural person, corporation, trust,
association, company, partnership, joint venture and other entity and any
government, governmental agency, instrumentality or political subdivision.

        1.9 Register, Registered and Registration. The terms "register,"
"registered" and "registration" refer to a registration effected by preparing
and filing a registration statement in compliance with the Securities Act, and
the declaration or ordering of the effectiveness of such registration statement.

        1.10 Registrable Securities. "Registrable Securities" means the Other
Registrable Securities and Radisys' Registrable Securities, collectively.

        1.11 Securities Act. "Securities Act" means the United States Securities
Act of 1933, as amended.

2. Incidental Registration.

        2.1 Notice to Radisys, Etc. Each time the Company shall determine to
file a registration statement under the Securities Act (other than on Form S-4,
S-8 or a registration statement on any form covering solely an employee benefit
plan) in connection with the proposed offer and sale for money of any of its
securities for its own account, the Company agrees to promptly give written
notice of its determination to Radisys. Upon the written request of Radisys
given within twenty (20) days after the receipt of such written notice from the
Company, subject to Section 2.3 below, the Company agrees to cause all of
Radisys' Registrable Securities, or such portion thereof as Radisys has
specified to the Company in writing, to be included in such registration
statement and registered under the Securities Act, all to the extent requisite
to permit the sale or other disposition by Radisys of Radisys' Registrable
Securities to be so registered.

        2.2 Inclusion in Underwriting. If the registration of which the Company
gives written notice pursuant to Section 2.1 is for a public offering involving
an underwriting, the Company agrees to so advise Radisys as a part of its
written notice. In such event, the right of Radisys to registration pursuant to
this Section 2 shall be conditioned upon Radisys' participation in such
underwriting and the inclusion of Radisys' Registrable Securities in the
underwriting to the extent provided herein. If any of Radisys' Registrable
Securities are to be distributed through such underwriting, Radisys shall enter
into (together with the Company and the other Holders distributing their
securities through such underwriting) an underwriting agreement with the
underwriter or underwriters selected for such underwriting by the Company,
provided that such underwriting agreement is in customary form.

        2.3 Limitations. Notwithstanding any other provision of this Section 2,
if the managing underwriter of an underwritten distribution advises the Company
in writing that in its good faith judgment the number of shares of Registrable
Securities requested to be registered exceeds the number of shares of
Registrable Securities which can be sold in such offering, then
<PAGE>   3
the number of shares of Registrable Securities so requested to be included in
the offering shall be reduced to that number of shares which in the good faith
judgment of the managing underwriter can be sold in such offering. Such reduced
number of shares to be included in the registration shall be allocated as
follows: first to the Company with respect to all of the shares to be registered
for the account of the Company; and second, to the Holders of shares of
Registrable Securities requesting to participate in such registration, on a pro
rata basis based on the total number of shares of Registrable Securities held by
each such Holder. All shares of Radisys' Registrable Securities which are
excluded from the underwriting by reason of the underwriter's marketing
limitation and all shares of Radisys' Registrable Securities not originally
requested to be so included shall not be included in such registration. (b) 2.4
Abandonment of Registration. Notwithstanding any other provision of this
Agreement, the Company may at any time, at the discretion of the Board, abandon
or terminate any registration statement, either prior to or after its filing
with the Commission, without liability or obligation to Radisys.

3. Expenses.

        3.1 Registration Expenses. Subject to Section 3.2 below, the Company
agrees to bear all fees, costs and expenses with respect to the inclusion of
shares of Radisys' Registrable Securities in any registration statement pursuant
to Section 2 hereof.

        3.2 Company Expenses; Expenses of Radisys. The fees, costs and expenses
of registration to be borne as provided in Section 3.1 above shall consist of
all registration, filing and NASD fees, printing expenses, fees and
disbursements of counsel and accountants for the Company, fees and disbursements
of counsel for the underwriter or underwriters of such securities (if the
Company and/or selling security holders are otherwise required to bear such fees
and disbursements), and all legal fees and disbursements and other expenses of
complying with state securities or blue sky laws of any jurisdictions in which
the securities to be offered are to be registered or qualified. The fees, costs
and expenses to be borne by the Company under Section 3.1 above shall not
include the fees, costs or expenses of any counsel to Radisys or stock transfer
taxes or underwriters' discounts and commissions relating to any of Radisys'
Registrable Securities.

4. Indemnification.

        4.1 Indemnification by Company. The Company hereby agrees to indemnify
and hold harmless Radisys, its officers, directors and each Person who controls
Radisys within the meaning of the Securities Act, from and against, and agrees
to reimburse Radisys, its officers, directors and controlling Persons with
respect to, any and all claims, actions (actual or threatened), demands, losses,
damages, liabilities, costs and expenses, including without limitation
attorneys' fees, to which any such indemnified Person may become subject under
the
<PAGE>   4
Securities Act or otherwise, insofar as such claims, actions, demands, losses,
damages, liabilities, costs or expenses arise out of or are based upon any
untrue statement or alleged untrue statement of any material fact contained in
such registration statement, any prospectus contained therein, or any amendment
or supplement thereto, or arise out of or are based upon the omission or alleged
omission to state therein a material fact required to be stated therein or
necessary to make the statements therein, in light of the circumstances under
which they were made, not misleading; provided, however, that the Company will
not be liable in any such case to the extent that any such claim, action,
demand, loss, damage, liability, cost or expense suffered by Radisys, its
officers, directors and controlling Persons is caused by an untrue statement or
alleged untrue statement or omission or alleged omission so made in strict
conformity with written information furnished by Radisys specifically for use in
the preparation thereof; provided, further, that with respect to an untrue
statement or alleged untrue statement or omission or alleged omission made in a
preliminary prospectus but eliminated or remedied in the amended prospectus on
file with the Commission at the time the registration statement becomes
effective (or an amended prospectus filed with the Commission pursuant to Rule
424(b)) (the "Final Prospectus"), or made in the Final Prospectus but eliminated
in any amendment or supplement filed subsequent to the Final Prospectus (a
"Subsequent Amendment"), this indemnity shall not inure to the benefit of
Radisys, its officers, directors or controlling Persons if, having previously
been furnished by or on behalf of the Company with copies of the Final
Prospectus or Subsequent Amendment, as applicable, Radisys thereafter fails to
deliver, prior to or concurrently with the sale of securities to such person, a
copy of the Final Prospectus or Subsequent Amendment, as applicable, to the
person asserting the claim, action, demand, loss, damage, liability, cost or
expense.

        4.2 Indemnification by Radisys. If any shares of Radisys' Registrable
Securities are included in a registration statement pursuant to the provisions
of this Agreement, Radisys shall indemnify and hold harmless the Company, its
officers, directors, legal counsel and accountants and each Person who controls
the Company within the meaning of the Securities Act, from and against, and
agrees to reimburse the Company, its officers, directors, legal counsel,
accountants and controlling Persons with respect to, any and all claims,
actions, demands, losses, damages, liabilities, costs or expenses, including
without limitation attorneys' fees, to which the Company, its officers,
directors, legal counsel, accountants or such controlling Persons may become
subject under the Securities Act or otherwise, insofar as such claims, actions,
demands, losses, damages, liabilities, costs or expenses are caused by any
untrue or alleged untrue statement of any material fact contained in such
registration statement, any prospectus contained therein or any amendment or
supplement thereto, or are caused by the omission or the alleged omission to
state therein a material fact required to be stated therein or necessary to make
the statements therein, in light of the circumstances under which they were
made, not misleading, in each case to the extent, but only to the extent, that
such untrue statement or alleged untrue statement or omission or alleged
omission was so made in reliance upon and in strict conformity with written
information furnished by Radisys specifically for use in the preparation
thereof.

        (i) Indemnification Procedure. Promptly after receipt by a party
indemnified pursuant to the provisions of Section 4.1 or 4.2 of notice of the
commencement of any action involving the subject matter of the foregoing
indemnity provisions, such indemnified party will, if a claim therefor is to be
made against the indemnifying party pursuant to the provisions of
<PAGE>   5
Section 4.1 or 4.2, notify the indemnifying party of the commencement thereof;
but the omission so to notify the indemnifying party will not relieve it from
any liability which it may have to an indemnified party otherwise than under
this Section 4 and shall not relieve the indemnifying party from liability under
this Section 4; provided that if the indemnifying party has not received notice
of the claim and the indemnified party fails to vigorously defend the claim or
settles or compromises the claim without the approval of the indemnifying party,
the indemnifying party shall be relieved of liability under this Section 4. In
case any such action is brought against any indemnified party, and it notifies
the indemnifying party of the commencement thereof, the indemnifying party will
be entitled to participate therein and, to the extent that it may wish, to
assume the defense thereof, with counsel satisfactory to such indemnified party;
provided, however, that if the defendants in any such action include both the
indemnified party and the indemnifying party and the indemnified party shall
have reasonably concluded that there may be legal defenses available to it
and/or other indemnified parties which are different from or additional to those
available to the indemnifying party, the indemnified party shall have the right,
at its own cost and expense, to select separate counsel (in which case the
indemnifying party shall not have the right to direct the defense of such action
on behalf of the indemnified party or parties). Upon the permitted assumption by
the indemnifying party of the defense of such action, and approval by the
indemnified party of counsel, the indemnifying party shall not be liable to such
indemnified party under Section 4.1 or 4.2 for any legal or other expenses
subsequently incurred by such indemnified party in connection with the defense
thereof (other than reasonable costs of investigation) unless the indemnifying
party shall not have employed counsel reasonably satisfactory to the indemnified
party to represent the indemnified party within a reasonable time, the
indemnifying party and its counsel do not actively and vigorously pursue the
defense of such action, or the indemnifying party has authorized the employment
of counsel for the indemnified party at the expense of the indemnifying party.
No indemnifying party shall be liable to an indemnified party for any settlement
of any action or claim without the consent of the indemnifying party and no
indemnifying party may unreasonably withhold its consent to any such settlement.
No indemnifying party will consent to entry of any judgment or enter into any
settlement which does not include as an unconditional term thereof the giving by
the claimant or plaintiff to such indemnified party of a release from all
liability with respect to such claim or litigation.

        4.3 Contribution. If the indemnification provided for in Section 4.1 or
4.2 is held by a court of competent jurisdiction to be unavailable to a party to
be indemnified with respect to any claims, actions, demands, losses, damages,
liabilities, costs or expenses referred to therein, then each indemnifying party
under any such Section, in lieu of indemnifying such indemnified party
thereunder, hereby agrees to contribute to the amount paid or payable by such
indemnified party as a result of such claims, actions, demands, losses, damages,
liabilities, costs or expenses, including without limitation attorneys' fees, in
such proportion as is appropriate to reflect the relative fault of the
indemnifying party on the one hand and of the indemnified party on the other in
connection with the statements or omissions which resulted in such claims,
actions, demands, losses, damages, liabilities, costs or expenses, as well as
any other relevant equitable considerations. The relative fault of the
indemnifying party and of the indemnified party shall be determined by reference
to, among other things, whether the untrue or alleged untrue
<PAGE>   6
statement of a material fact or the omission or alleged omission to state a
material fact relates to information supplied by the indemnifying party or by
the indemnified party and the parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such statement or omission.

        4.4 Limitation on Radisys' Obligations. Notwithstanding the foregoing,
in no event shall Radisys' indemnification or contribution obligations under
this Section 4 exceed an amount equal to the per share public offering price
(less any underwriting discount and commissions) multiplied by the number of
shares of Radisys' Registrable Securities sold pursuant to the registration
statement which gives rise to such obligation to contribute or indemnify (less
the aggregate amount of any damages which Radisys has otherwise been required to
pay in respect of such claim, action, demand, loss, damage, liability, cost or
expense or any substantially similar claim, action, demand, loss, damage,
liability, cost or expense arising from the sale of Radisys' Registrable
Securities).

        4.5 Exceptions in Event of Fraud. No person guilty of fraudulent
misrepresentation (within the meaning of Section 11(f) of the Securities Act)
shall be entitled to contribution hereunder from any person who was not guilty
of such fraudulent misrepresentation.

5. Radisys Information. If any shares of Radisys' Registrable Securities are to
be included in any registration to be effected pursuant to this Agreement, the
Company may require Radisys to furnish the Company with such information with
respect to Radisys and the distribution of such shares of Radisys' Registrable
Securities as the Company may from time to time reasonably request in writing to
comply with such disclosure obligations as shall be required by law or by the
Commission in connection therewith, and Radisys shall furnish the Company with
such information.

6. Forms. All references in this Agreement to particular forms of registration
statements are intended to include, and shall be deemed to include, references
to all successor forms which are intended to replace, or to apply to similar
transactions as the forms herein referenced.

7. Transfer of Registration Rights. The rights to cause the Company to register
securities granted to Radisys pursuant to this Agreement may not be transferred
or assigned by Radisys.

8. Miscellaneous.

        8.1 Waivers and Amendments. Neither this Agreement nor any provision
hereof may be changed, waived, discharged or terminated orally or by course of
dealing, but only by a statement in writing signed by the Company and Radisys.
<PAGE>   7

        8.2 Notices. All notices, requests, demands, and other communications
required to or permitted to be given under this Agreement shall be in writing
and shall be conclusively deemed to have been duly given (i) when hand delivered
to the other party; or (ii) when received when sent by facsimile at the address
and number set forth below (provided, however, that notices given by facsimile
shall not be effective unless either (a) a duplicate copy of such facsimile
notice is promptly given by depositing the same in a United States post office
with first-class postage prepaid and addressed to the parties as set forth
below, or (b) the receiving party delivers a written confirmation of receipt for
such notice either by facsimile or any other method permitted under this
Section; additionally, any notice given facsimile shall be deemed received on
the next business day if such notice is received after 5:00 p.m. (recipient's
time) or on a nonbusiness day); or (iii) three (3) business days after the same
have been deposited in a United States post office with first class or certified
mail return receipt requested postage prepaid and addressed to the parties as
set forth below; or (iv) the next business day after the same have been
deposited with a national overnight delivery service reasonably approved by the
parties (Federal Express and DHL WorldWide Express being deemed approved by the
parties), postage prepaid, addressed to the parties as set forth below with
next-business-day delivery guaranteed, provided that the sending party receives
a confirmation of delivery from the delivery service provider.

               To:    General Automation, Inc.
                      17731 Mitchell North
                      Irvine, CA 92614
                      Attention: Chief Financial Officer
                      FAX: (949) 752-6772

               To:    Radisys CPD, Inc.
                      5959 Corporate Drive
                      Houston, TX 77036
                      Attention: President
                      FAX: (503) 615-1114

Each party shall make an ordinary, good faith effort to ensure that it will
accept or receive notices that are given in accordance with this Section, and
that any person to be given notice actually receives such notice. A party may
change or supplement the addresses given above, or designate additional
addresses, for purposes of this Section by giving the other party written notice
of the new address in the manner set forth above.

        8.3 Severability. Should any one or more of the provisions of this
Agreement or of any agreement entered into pursuant to this Agreement be
determined to be illegal or unenforceable, all other provisions of this
Agreement and of each other agreement entered into pursuant to this Agreement,
shall be given effect separately from the provision or provisions determined to
be illegal or unenforceable and shall not be affected thereby.
<PAGE>   8

        8.4 Headings. The headings of the sections, subsections and paragraphs
of this Agreement have been inserted for convenience of reference only and do
not constitute a part of this Agreement.

        8.5 Choice of Law. It is the intention of the parties that the internal
substantive laws, and not the laws of conflicts, of the State of California
should govern the enforceability and validity of this Agreement, the
construction of its terms and the interpretation of the rights and duties of the
parties.

        8.6 Counterparts. This Agreement may be executed in any number of
counterparts and by different parties hereto in separate counterparts, with the
same effect as if all parties had signed the same document. All such
counterparts shall be deemed an original, shall be construed together and shall
constitute one and the same instrument.

            In witness whereof, the parties hereto have executed this Agreement.

GENERAL AUTOMATION, INC.                RADISYS CPD, INC.

By:                                     By:
   ------------------------------          -------------------------------------
        Jane Christie, President
                                        Its:
                                            ------------------------------------
                                              (Please print name and title)

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