RESTATED SECURED PROMISSORY NOTE


$1,615,000.00                                              Sunnyvale, California
                                                                  March 31, 1994

     FOR VALUE RECEIVED, each of the undersigned (collectively,  the "Obligors")
promises  to pay  to  Chips  and  Technologies,  Inc.,  a  Delaware  corporation
("Chips"),  or  order,  at such  place or  places as Chips may from time to time
designate in writing, the principal sum of $1,615,000.00.  Interest shall accrue
from  September 24, 1993 on the unpaid  principal sum at the rate of ten percent
(10%) per annum,  compounded monthly, but in no event shall the interest rate be
greater than the maximum amount which may be charged under applicable law.

     The Obligors shall make payments in four equal  installments of $457,314.51
on each of March 31, 1994,  September 30, 1994, March 31, 1995 and September 30,
1995.  All  payments  shall be  applied  first to accrued  interest  and then to
principal.  All unpaid principal and interest remaining outstanding shall be due
and payable in full on September 30, 1995. At any time from the date hereof, any
Obligor  may prepay all or any  portion of the  principal  of this note  without
penalty.  This note shall be prepaid to the extent set forth in Section 2 of the
Security  Agreement (as defined below). Any prepayment shall be applied first to
accrued  and  unpaid  interest  and  then  to  the  principal  portion  of  each
installment in inverse order of maturity.

     If the  principal  and  interest are not paid in full when they become due,
the Obligors  agree to pay Chips,  in addition to such amounts owed  pursuant to
this note, all costs and expenses of collection,  including a reasonable sum for
attorneys' fees as fixed by a court of competent jurisdiction.

     The  Obligors'  obligations  under  this  note  are  secured  by a Loan and
Security  Agreement  of even date  herewith  between the Obligors and Chips (the
"Security  Agreement").  Each Obligor is jointly and severally liable hereunder.
The  obligations of the Obligors  under this Note are  guaranteed  pursuant to a
Secured  Continuing  Guarantee of even date herewith between Chips and Techfarm,
Inc.

     This note shall be governed by and construed in accordance with the laws of
the State of  California.  Acceptance of partial or delinquent  payment from any
Obligor  or the  failure  of the  holder  of this  note to  exercise  any  right
hereunder  shall not constitute a waiver of any obligation of any Obligor or any
right of the holder of this note  under  this note,  and shall not affect in any



way the right to require full performance at any time  thereafter.  Presentment,
protest,  notice of protest  and notice of  dishonor  are hereby  waived by each
Obligor.

                                    CHIPS & TECHNOLOGIES JV
                                    CYPRUS LTD.



                                    By: /s/
                                    --------------------------------------------

                                    Title: /s/
                                    --------------------------------------------


                                    SUMMIT SYSTEMS JV


                                    By: /s/
                                    --------------------------------------------

                                    Title: /s/
                                    --------------------------------------------



                    SECURED CONTINUING GUARANTEE

           This Secured Continuing Guarantee (the "Guarantee") is made this 31st
day of March, 1994 by and between Techfarm, Inc., a California corporation (the
"Guarantor") having its principal place of business located at 404 Tasman Drive,
Sunnyvale, CA 94089 and Chips and Technologies, Inc., a Delaware corporation
(the "Lender"), having its principal offices located at 2950 Zanker Road, San
Jose, CA 95134.

                           R E C I T A L S

           A. The Lender has loaned to Chips & Technologies JV Cyprus Ltd. and
to Summit Systems JV (collectively, the "Debtors") the principal amount of
$1,615,000.00 (the "Loan") pursuant to a Restated Note dated as of March 31,
1994 (the "Note") and a Restated Loan and Security Agreement of the same date
(the "Security Agreement").

           B. The Lender is willing to extend credit to Debtors only if it
receives satisfactory assurances for the full and prompt performance and payment
by Debtors of all of their obligations to the Lender.

           C. Guarantor agrees that the provision of credit to Debtors will
benefit Guarantor. At the request of Debtors, and in order to induce the Lender
to extend credit to Debtors, Guarantor is willing to guarantee to the Lender
full and prompt performance and payment by Debtors of all of their obligations
to the Lender.

           FOR GOOD AND VALUABLE CONSIDERATION, the receipt and adequacy of
which is hereby acknowledged, the parties hereto agree as follows:

           1.   Continuing Guarantee.

                1.1 Guarantee. The Guarantor hereby unconditionally, absolutely
and irrevocably guarantees to the Lender the full and indefeasible payment and
performance by each of the Debtors of each of their respective obligations to
the Lender, now existing or hereafter arising, including, without limitation,
the payment in full when due (whether at stated maturity, by acceleration, or
otherwise) of the principal of and interest on the Loan and all other amounts,
liabilities and indebtedness (whether for principal, interest, reimbursement,
fees, charges, indemnification, or otherwise) now or in the future owed to the
Lender by either Debtor under the Note, the Security Agreement, and any
renewals, extensions, amendments, or modifications thereof, in each case
strictly in accordance with the terms thereof (all of the foregoing, and all
other obligations and covenants to be performed by the Guarantor under this
Agreement, are collectively referred to herein as the "Obligations").

                1.2 Duration. Guarantor may revoke this Guarantee on written
notice to the Lender at any time after the full and indefeasible payment and
performance by each of the Debtors of each of their respective Obligations to
the Lender under the Note and the Security Agreement (such obligations, the
"Note Obligations"), but such revocation will not apply to any Obligations first
incurred prior to the effective date of such notice including, without
limitation, the Note Obligations, even if such Obligations are subsequently
modified or extended. Guarantor acknowledges that fluctuations in the amount of
Obligations are expected to occur, but that this Guarantee will not be
terminated prior to its expiration or written revocation.



                1.3 Unconditional Nature. Guarantor hereby agrees this Guarantee
is unconditional and irrevocable and is effective immediately and will continue
to be in full force and effect regardless of whether Guarantor would have had
any defense as against the Lender under the law of suretyship or otherwise.
Guarantor is bound to the full and prompt performance and payment of all
Obligations as if such Obligations were directly owed to the Lender by
Guarantor. Guarantor shall remain liable under this Guarantee until the
Obligations incurred prior to the expiration or revocation of this Guarantee
have been discharged in full.

                1.4 Waiver. Guarantor waives, with full understanding of the
significance of such waivers, and with the agreement that such waivers are
reasonable and not contrary to public policy:

                     (a)  any requirement that the Lender give the Guarantor any

form of notice or demand to which Guarantor might otherwise be entitled in law
or equity, including notice of the amount of the Obligations outstanding from
time to time, notice of Debtors' financial condition, or notice of default;

                     (b)  any and all defenses available to Guarantor under the

statute of limitations, law of suretyship or otherwise including, without
limitation, any defense arising out of the absence or loss of any remedy of
Guarantor against Debtors, or any other defense or claim relating to the
exoneration or discharge of Debtors or any guarantors or sureties; any defense
arising out of the modification or extension of any Obligations, whether before
or after this Guarantee is revoked or expires, and any rights or defenses
arising under Sections 726, 580b and 580d of the California Code of Civil
Procedure, or any similar laws in other jurisdictions; and

                     (c)  any rights, by statute or otherwise, which require the

Lender to institute suit against Debtors or otherwise to exhaust the Lender's
rights and remedies against Debtors or any security securing any Obligation or
pursue any other remedy or enforce any other right before proceeding against
Guarantor under this Guarantee.

                1.5 Consents. Without limiting the generality of the waivers set
forth in Section 1.4, the Guarantor hereby expressly agrees that any or all of
the following actions may be taken without notice to the Guarantor and without
affecting the liability of the Guarantor under this Guarantee:

                     (a)  the terms of the Note or the Security Agreement may be

amended as provided for therein for the purpose of adding any provisions thereto
or changing in any manner the rights or obligations of the Debtors or the Lender
thereunder;

                     (b)  the time for the performance of or compliance with any

term of the Note or the Security Agreement by the Debtors (or either of them)
may be accelerated or extended or such performance or compliance may be waived
by the Lender;

                    (c) any collateral security, including, without limitation,
the Collateral (as defined in the Security Agreement), for all or any part of
the Obligations may be exchanged, surrendered or otherwise dealt with, and the
Lender's interest therein may be released and may or may not be perfected, all
as the Lender in its sole discretion may determine;



                    (d) the Lender may discharge or release, in whole or in
part, the Debtors (or either of them), or any other entity liable for the
payment and performance of all or any part of the Obligations;

                     (e)  in addition to the Collateral, the Lender may take and

hold other security (legal or equitable) of any kind, at any time, as collateral
for the Obligations, and may, from time to time, in whole or in part, exchange,
sell, surrender, release, subordinate, modify, waive or extend such security and
may apply such security and direct the order or manner of sale thereof; and

                     (f)  the Lender may exercise, or waive or otherwise refrain
from exercising, any right, remedy, power or privilege (including the right to
accelerate the maturity of the Loan or any other Obligation) granted to the
Lender hereby, by the Note, by the Security Agreement, by any other applicable
security document or agreement, or by any applicable law, even if the exercise
or waiver of such right, remedy, power or privilege affects or eliminates any
right of the Guarantor against the Debtors (or either of them).

                1.6 Form and Amount of Obligations. Guarantor hereby consents
and agrees to the extension of credit to Debtors by the Lender, in the Lender's
sole discretion, and agrees to be bound by and to comply with all promises,
covenants and agreements of Debtors to the Lender. Guarantor understands and
agrees that the amount, manner, duration or any other term of the Obligations
may be changed, increased, extended, settled, waived or released without notice
to or the consent of the Guarantor. Guarantor agrees that any statement of
account that would bind Debtors will bind Guarantor.

                1.7 No Diminishment. The Lender shall have the sole right to
choose its remedies in enforcing the Obligations, including the taking or
releasing of any security, and to determine how and when to apply any payments
and credits to the Obligations. No such election by the Lender shall constitute
a waiver of the Lender's right to proceed in any other form of action or
proceeding or against any other parties unless the Lender has expressly waived
such right in writing.

                1.8  Subordination.  All indebtedness of Debtors now or
hereafter held by Guarantor is hereby subordinated to the indebtedness of
Debtors to the Lender.

                1.9  Subrogation.

                     (a)  Notwithstanding any other provision of this Guarantee
to the contrary, the Guarantor hereby unconditionally and irrevocably waives and
relinquishes any and all claims and other rights which the Guarantor may now
have or hereafter acquire against the Debtors (or either of them) or any other
guarantor that arise from the existence or performance of the Obligations under
this Guarantee or any other document, including without limitation, the Note or
the Security Agreement (all such claims and rights are referred to as
"Conditional Rights"), including, without limitation, any right of subrogation,
reimbursement, exoneration, contribution, or indemnification, any right to
participate in any claim or remedy of the Lender against the Debtors (or either
of them) or any Collateral which the Lender now has or hereafter acquires,
whether or not such claim, remedy or right arises in equity or under contract,
statute or common law, by any payment made hereunder or otherwise, including,



without limitation, the right to take or receive from the Debtors (or either of
them), directly or indirectly, in cash or other property or by setoff or in any
other manner, payment or security on account of such claim or other rights. The
Guarantor hereby agrees that the Guarantor will not exercise any Conditional
Rights which it may acquire under this Guarantee or any other document or by any
payment made hereunder or otherwise, including, without limitation, the right to
take or receive from any other guarantor, directly or indirectly, in cash or
other property or by setoff or in any other manner, payment or security on
account of such Conditional Rights. If, notwithstanding the foregoing
provisions, any amount shall be paid to the Guarantor on account of any such
Conditional Rights and either (i) such amount is paid to the Guarantor at any
time when the Obligations shall not have been paid or performed in full, or (ii)
regardless of when such amount is paid to the Guarantor, any payment made by the
Debtors (or either of them) to the Lender is at any time determined to be a
Preferential Payment (as defined below), then such amount paid to the Guarantor
shall be held in trust for the benefit of the Lender and shall forthwith be paid
to the Lender to be credited and applied upon the Obligations.

                     (b)  To the extent that any of the provisions of
subparagraph  (a)  of  this  Section  1.9  shall  not be  enforceable,  the
Guarantor agrees that until such time as the Obligations have been  indefeasibly
paid and  performed in full and the period of time has expired  during which any
payment  made by the Debtors (or either of them) or the  Guarantor to the Lender
may be determined to be a Preferential  Payment,  the Conditional Rights, to the
extent not validly waived,  shall be fully  subordinate to the Lender's right to
full payment and  performance of the  Obligations,  and the Guarantor  shall not
enforce any  Conditional  Rights  until such time as the  Obligations  have been
indefeasibly  paid and  performed  in full and the  period  of time has  expired
during which any payment made by Debtors (or either of them) or the Guarantor to
the Lender may be determined to be a Preferential Payment.

                     (c)  For purposes of this Section 1.9, the term
"Preferential Payment" shall refer to any payment, voluntary or involuntary
(including  by way of  setoff),  by the  Debtors  (or  either  of  them)  or the
Guarantor to the Lender in respect of the Obligations,  all or any part of which
is  subsequently  invalidated,  declared to be fraudulent or  preferential,  set
aside or  required  to be  repaid  by the  recipient  thereof  or paid over to a
trustee,  receiver or any other  entity,  whether under the  bankruptcy  code or
otherwise.

                1.10 Debtors' Financial Condition. The Guarantor acknowledges
that it has, independently of an without reliance on the Lender, made its own
credit analysis of the Debtors and the collateral and performed its own legal
review of this Guarantee, the Note, the Security Agreement and all related
filings; and the Guarantor is not relying on the Lender with respect to any of
the aforesaid items. The Guarantor has established adequate means of obtaining
from the Debtors on a continuing basis financial and other information
pertaining to the Debtors' financial condition and the value of the Collateral.
The Guarantor agrees to keep adequately informed of any facts, events or
circumstances which might in any way affect the Guarantor's risks hereunder, and
the Guarantor further agrees that the Lender shall have no obligation to
disclose to the Guarantor information or material with respect to the Debtors or
any Collateral. The Guarantor acknowledges that its obligation hereunder will
not be affected by (a) the Lender's failure properly to create a lien on the
Collateral or any of it, (b) the Lender's failure to create or maintain a
priority with respect to the lien on or in the Collateral or any of it, or (c)
any act or omission to act on the part of the Lender (whether negligent or
otherwise) which adversely affects the value of the Collateral or any of it.



                1.11 Debtors' Bankruptcy. Guarantor shall remain obligated to
perform promptly under this Guarantee if any Debtor should at any time become
insolvent or make a general assignment for the benefit of its creditors, or a
petition of bankruptcy or any insolvency or reorganization proceeding shall be
filed or commenced, by, against or in respect of any Debtor, notwithstanding any
stay or other prohibition preventing the Lender from proceeding against such
Debtor.

                1.12 Expenses. In addition to its guarantee hereunder of the
Obligations, the Guarantor hereby agrees to pay all interest accrued thereon
during, and all costs and expenses (including, without limitation, attorneys
fees) incurred or paid by the Lender in connection with the collection of the
Obligations and the enforcement of the rights of the Lender hereunder.

           2.   Representations and Warranties.

                2.1 Organization. The Guarantor is a corporation duly organized,
validly existing and in good standing under the laws of the State of California.

                2.2 Power and Authority. The execution, delivery and performance
by the Guarantor of this Guarantee are within the Guarantor's corporate powers
and have been duly authorized by all necessary action; do not contravene the
Guarantor's charter documents or any law or any contractual restriction binding
on or affecting the Guarantor or by which the Guarantor's property may be
affected, do not require any authorization or approval or other action by, or
any notice to or filing, registration or recording with, any governmental agency
or any other entity.

                2.3 Binding Effect. This Guarantee constitutes the legal, valid
and binding obligation of the Guarantor, enforceable in accordance with its
terms, except as the enforceability thereof may be subject to or limited by
bankruptcy, insolvency, reorganization, arrangement, moratorium or other similar
laws relating to or affecting the rights of creditors and by general principles
of equity, and without defense, counterclaim or offset.

           3.   Miscellaneous.

                3.1 Governing Laws. The internal laws of the State of California
(irrespective of its choice of law principles) shall govern the validity,
interpretation and enforcement of this Guarantee. The Guarantor hereby submits
to the exclusive and personal jurisdiction of the state and federal courts in
Santa Clara County, California.

                3.2 Binding Upon Successors and Assigns. This Guarantee may not
be assigned, in whole or in part, without the prior written consent of the
Lender. Subject to the foregoing, each and all of the covenants, terms,
provisions, and agreements contained herein shall be binding upon, and inure to
the benefit of, the permitted successors, executors, heirs, representatives,
administrators and assigns of the parties hereto. This Guarantee may be
assigned, in whole or in part, by the Lender to any subsequent holder of all or
any portion of the Obligations.



                3.3 Severability. If any provision of this Guarantee, or the
application thereof, shall for any reason and to any extent be invalid or
unenforceable, the remainder of this Guarantee and application of such provision
to other persons or circumstances shall be interpreted so as best to reasonably
effect the intent of the parties hereto. The parties further agree to replace
such void or unenforceable provision of this Guarantee with a valid and
enforceable provision which will achieve, to the extent possible, the economic,
business and other purposes of the void or unenforceable provision.

                3.4 Entire Guarantee. This Guarantee constitutes the entire
understanding and agreement of the parties hereto with respect to the subject
matter hereof and supersedes all prior and contemporaneous agreements or
understandings, written or oral, between the parties with respect hereto. The
express terms hereof control and supersede any course of performance or usage of
the trade inconsistent with any of the terms hereof.

                3.5 Counterparts. This Guarantee may be executed in any number
of counterparts, each of which shall be an original as against any party whose
signature appears thereon and all of which together shall constitute one and the
same instrument.

                3.6 Amendment and Waiver. Any term or provision of this
Guarantee may be amended, and the observance of any term of this Guarantee may
be waived (either generally or in a particular instance and either retroactively
or prospectively) only by a writing signed by the Guarantor and the Lender. The
waiver by a party of any breach hereof for default in payment of any amount due
hereunder or default in the performance hereof shall not be deemed to constitute
a waiver of any other default or succeeding breach or default.

                3.7  No Waiver.  The failure of any party to enforce any of the
provisions hereof shall not be construed to be a waiver of the right of such
party thereafter to enforce such provisions.

                3.8  Attorneys' Fees. Should suit be brought to enforce
or interpret any part of this Guarantee, the prevailing party shall be entitled
to recover, as an element of the costs of suit and not as damages, reasonable
attorneys' fees to be fixed by the court (including without limitation, costs,
expenses and fees on any appeal).

                3.9  Notices. Any notices under this Guarantee shall be in
writing and shall be effective only if it is delivered by personal service or
mailed by prepaid first class mail, return receipt requested, addressed as set
forth on the first page hereof or to any new address given to the other party in
accordance with this Section 3.9. Guarantor agrees to inform the Lender promptly
of any change of the address to which notice should be sent. Notices to the
Lender shall be Attn: Chief Financial Officer, and notices to Guarantor shall be
Attn: Nancy Dusseau. Such communications shall be effective when they are
received by the addressee thereof, but if sent by first class mail in the manner
set forth above, they shall be effective five (5) days after being deposited in
the official mail.



           IT WITNESS WHEREOF, the parties hereto have executed this Guarantee
as of the date first hereinabove written.

                               GUARANTOR:

                               TECHFARM, INC.

                               By:

                               Title: President


                               THE LENDER:

                               CHIPS AND TECHNOLOGIES, INC.

                               By:

                               Title: President and CEO




                      RESTATED LOAN AND SECURITY AGREEMENT

     This Restated Loan and Security Agreement (this "Restated Security
Agreement") is made as of the 31st day of March, 1994 by and among Techfarm,
Inc., a California corporation, having its principal place of business at 404
Tasman, Sunnyvale, California 94089 (hereinafter called "Techfarm"), Chips &
Technologies JV Cyprus Ltd., a corporation formed under the laws of Cyprus
having its official place of business at P.O. Box 1687, Nicosia, Cyprus
(hereinafter "C&T Cyprus"), Summit Systems J.V., an organization originally
formed under the laws of the USSR, having its official place of business at
22210, Belarus Minsk District, Smolevishy Region, Minsk-2 Airport, Russia
(hereinafter "Summit") and Chips and Technologies, Inc., a Delaware corporation,
having its principal place of business at 2950 Zanker, San Jose, California
95134 (hereinafter called the "Secured Party"). C&T Cyprus and Summit are
collectively referred to as the "Debtors". Unless otherwise defined, the terms
used in this Restated Security Agreement shall have the meanings given them in
the California Uniform Commercial Code (the "Code").

                                R E C I T A L S

     WHEREAS, Techfarm purchased from the Secured Party, pursuant to an Asset
Purchase Agreement dated as of September 24, 1993 (the "Purchase Agreement"),
certain assets and businesses identified in the Purchase Agreement as Purchased
Assets (the "Purchased Assets") and Acquired Businesses (the "Acquired
Businesses"), respectively, and delivered to Secured Party, as part of the
consideration therefor, a promissory note in the principal amount of
$1,615,000.00 (the "Note") and a Security Agreement dated as of September 24,
1993 (the "Original Agreement"); and

     WHEREAS, the Secured Party and Techfarm have agreed that Techfarm shall be
removed as an obligor on the Note by execution and delivery of a Restated Note
of even date herewith (the "Restated Note"), the Debtors shall become
co-obligors with respect to its obligations under the Original Agreement as
provided in this Restated Security Agreement, and Techfarm shall guarantee the
Debtors' obligations under the Restated Note by delivering to Chips a Secured
Continuing Guarantee (the "Guarantee").

          On the basis of the foregoing and the mutual promises contained
herein, the parties hereto agree as follows:

          Article 1.  Security Interest.

          1.1 Grant of Security Interest by Debtors. In consideration for
Secured Party's acceptance of the Note from the Debtors, and to secure the full,



prompt and unconditional payment of all amounts due under the Restated Note
(including interest thereon accruing from September 24, 1993) and in connection
with any extension of credit by the Secured Party in favor of the Debtors
pursuant to the Purchase Agreement, including any extensions, amendments or
substitutions thereof, or any new advances under the Restated Note or the
Purchase Agreement, and the strict performance and observance by the Debtors of
all agreements, warranties and covenants of this Agreement (the "Obligations"),
(a) C&T Cyprus hereby pledges, assigns, transfers and grants to the Secured
Party, a continuing security interest under the Code in and to all the capital
stock or equity interests of Summit (or any successor to Summit formed after the
date hereof) now or hereafter owned by C&T Cyprus and (b) Summit hereby pledges,
assigns, transfers and grants to the Secured Party, a continuing security
interest under the Code in and to all assets of Summit including, without
limitation, all inventory, equipment, accounts, fixtures, chattel paper,
instruments and general intangibles now owned or hereafter acquired of Summit
(collectively, the "Debtors' Collateral"). The parties agree that the date of
grant of this security interest shall be deemed to be the date of the Original
Agreement, and that the security interest shall have continued in full force and
effect from such date.

          1.2 Grant of Security Interest by Techfarm. In consideration for
Secured Party's acceptance of the Note from the Debtors, and to secure the full,
prompt and unconditional payment of all amounts due under the Guarantee and the
strict performance and observance by Techfarm of all of its obligations
thereunder, Techfarm hereby pledges, assigns, transfers and grants to the
Secured Party, a continuing security interest under the Code in and to all the
capital stock or equity interests of C&T Cyprus (or any successor to C&T Cyprus
formed after the date hereof) now or hereafter owned by Techfarm (the "Techfarm
Collateral" and, together with the Debtors' Collateral, the "Collateral"). The
parties agree that the date of grant of this security interest shall be deemed
to be the date of the Original Agreement, and that the security interest shall
have continued in full force and effect from such date.

          1.3 Further Assurances. Each Debtor and Techfarm shall deliver to the
Secured Party all stock certificates evidencing the Collateral, together with
stock powers attached thereto endorsed in blank, as such certificates are
available. Each Debtor and Techfarm shall deliver to the Secured Party such
instruments, agreements, certificates and documents (including Uniform
Commercial Code financing statements and other documents or security agreements
required under the laws of the jurisdictions in which any Collateral is located)
as the Secured Party may reasonably request to perfect, maintain and evidence
the liens granted to the Secured Party by Sections 1.1 and 1.2 hereof, subject



to no other liens or encumbrances of any kind other than any that may be agreed
to by the Secured Party in writing.

          1.4 Guarantee. Techfarm agrees to deliver to Secured Party upon
execution of this Agreement by all parties the Guarantee in substantially the
form attached hereto as Exhibit A.

          Article 2.  Covenants.

          2.1 Liens. Except for liens in favor of the Secured Party or
additional liens permitted by the Secured Party in writing, each Debtor shall
not mortgage, pledge or grant a lien upon any of the Debtors' Collateral, and
Techfarm shall not mortgage, pledge or grant a lien upon the Techfarm
Collateral.

          2.2 Maintenance of Collateral. Each Debtor and Techfarm shall perform
all acts that may be reasonably necessary to maintain, preserve, protect and
perfect the Collateral, the lien granted to the Secured Party therein and the
first priority of such lien; provided, however, nothing herein shall prevent the
sale of any Debtors' Collateral in the ordinary course of business other than
any equity interest in Summit.

          2.3 Insurance. To the extent any Debtor maintains property or
liability insurance with respect to its Collateral, it shall cause the Secured
Party to be named as loss payee on any such property insurance policy and as
additional insured on any liability policy.

          2.4 Mandatory Prepayment of the Restated Note. Each Debtor hereby
agrees that the principal and interest on the Restated Note shall become
immediately due and payable to the extent of cash proceeds (net of selling
expenses) received by Techfarm or any Debtor in connection with the following:

               (a) The sale or transfer by Techfarm of any of the Purchased
Assets or Acquired Businesses if Techfarm shall not immediately following such
sale obtain or retain, directly or indirectly, a material equity interest in
such purchaser or transferee (a "Transferee");

               (b) The sale or transfer by Techfarm of all or substantially all
of its equity interests in C&T Cyprus or a Transferee if immediately following
such sale Techfarm does not have, directly or indirectly, a material equity
interest in C&T Cyprus or such Transferee, as applicable;



               (c) The sale or transfer by C&T Cyprus of all or substantially
all of its equity interests in Summit if immediately following such sale C&T
Cyprus does not have, directly or indirectly, a material equity interest in
Summit; or

               (d) The sale or transfer by Techfarm, any Debtor or any
Transferee of all or substantially all of the Purchased Assets or Acquired
Businesses owned by such person, if such party shall not immediately following
such sale obtain or retain, directly or indirectly, a material equity interest
in such purchaser or transferee;

provided, however, that no prepayment shall become due in connection with (1)
any sale of any Purchased Assets in the ordinary course of business, or (2) any
sale of immaterial portions of such Purchased Assets or Acquired Businesses.

          2.5 Prepayment in Full of the Restated Note. Each Debtor and Techfarm
hereby agrees that the principal and accrued interest on the Restated Note shall
become immediately due and payable in full upon the sale or transfer by all of
the original holders of capital stock of Techfarm of all or substantially all of
their stock of Techfarm unless simultaneously with such sale or transfer one or
more of such holders obtains or retains, directly or indirectly, a material
equity interest in such purchaser or transferee.

          2.6 Acquisition by C&T Cyprus of 100% Interest in Summit. Techfarm
agrees to use its reasonable best efforts to cause C&T Cyprus to acquire as
promptly as practicable one hundred percent (100%) of the ownership interests of
Summit.

          Article 3.  Default.

          3.1 Events of Default. The term "Event of Default," as used herein,
shall mean the occurrence and continuation of any one or more of the following
events:

               (a) Any Debtor shall fail to make any payment under the Restated
Note or this Restated Security Agreement within ten (10) days after such payment
is due in accordance with the terms thereof or hereof; or

               (b) Techfarm shall fail to make any payment under the Guarantee
within ten (10) days after such payment is due in accordance with the terms
thereof; or



               (c) Techfarm or any Debtor shall fail to satisfy or comply with
any of the material terms or conditions of this Agreement to be performed by it
and such failure shall continue for thirty (30) days after written notice from
the Secured Party to Techfarm or such Debtor, as the case may be, specifying
such failure; or

               (d) Any of the representations or warranties set forth in Article
4 hereof shall prove to have been false or misleading in any material respect
when made, or shall have been breached and such breach shall continue for thirty
(30) days after written notice from the Secured Party to Techfarm or the
relevant Debtor specifying such breach; or

               (e) An "event of default" shall occur under any of the security
or other agreements securing the Obligations executed by Techfarm or any of the
Debtors; or

               (f) Techfarm or any Debtor shall voluntarily make an assignment
for the benefit of creditors or voluntarily commence proceedings under the
United States Bankruptcy Code or any other insolvency, receivership,
reorganization or debtor's relief law, or have any such proceedings instituted
against it that are not stayed or dismissed within ninety (90) days.

          3.2 Rights Upon Default. Upon the occurrence of an Event of Default,
the Secured Party shall have the right to immediately demand payment of the
Restated Note and the other Obligations, to foreclose the security interest by
any available judicial procedure and to demand, sue for, collect or make any
compromise or settlement the Secured Party deems suitable in respect of any
Collateral, and to pursue any other remedy available to the Secured Party under
the Guarantee, under the Code or under other applicable law as enacted in any
jurisdiction in which the Collateral may be located.

          3.3 Costs and Attorneys' Fees. Each Debtor and Techfarm agrees to pay
all costs and expenses (including reasonable attorneys' fees and expenses) of
the Secured Party incidental to the sale of, or realization upon, any of the
Collateral or in any way relating to the enforcement or protection or
preservation of the rights of the Secured Party hereunder as against any Debtor
or Techfarm.

          3.4 Rights of Secured Party; No Waiver. The Secured Party shall have
all the rights of a Secured Party under the Code and, in addition, shall have
all the rights specified herein. No failure on the part of the Secured Party to
exercise, and no delay in exercising, any right, remedy or power hereunder shall
operate as a waiver thereof, nor shall any single or partial exercise by the



Secured Party of any right, remedy or power hereunder preclude any other or
future exercise of any other right, remedy or power.

          3.5 Release of Security Interest. Upon payment in full of all
Obligations owed by Techfarm and the Debtors to the Secured Party, the security
interest in the Collateral granted under this Agreement shall terminate, and the
Secured Party agrees promptly to return to the appropriate party all stock
certificates evidencing the Collateral and to file any termination statements or
other documents evidencing the termination of such security interest.

          Article 4.  Representations and Warranties of Techfarm and Each
Debtor.  Techfarm and each Debtor represents and warrants to the Secured Party
as of the date hereof that:

          4.1 Title to Properties. To the best of its knowledge, and conditioned
upon the transfer of good title by Secured Party to Techfarm under the Purchase
Agreement, Techfarm and each Debtor has valid title to and ownership of all the
properties and assets purported to be owned by it, and a valid leasehold
interest in all the properties and assets leased by it, free from all mortgages,
pledges, liens, security interests, conditional sale agreements, encumbrances or
charges, except for the perfected security interest granted to the Secured Party
hereunder and the other liens as identified in the Purchase Agreement.

          4.2 Priority. To the extent the laws of the United States of America
or any state thereof govern the creation, perfection and effects of perfection
of the security interests granted hereunder, upon the Secured Party's receipt of
the certificates representing any capital stock pledged hereunder and the filing
of any applicable UCC financing statements, the security interests granted to
the Secured Party under this Agreement constitute a perfected security interest
in and lien on all of the Collateral, subject only to those liens identified in
the Purchase Agreement.

          4.3 Ownership of C&T Cyprus. Subject to any title defects that arose
on or prior to the transfer of the stock of C&T Cyprus to Techfarm, Techfarm
owns all but one share of the outstanding capital stock of C&T Cyprus,
consisting of 999 shares of Common Stock.

          4.4  Ownership of Summit.  C&T Cyprus owns approximately 95% of the
ownership interests of Summit.



          Article 5.  Miscellaneous.

          5.1 Entire Contract. This Restated Security Agreement, the Restated
Note, the Purchase Agreement and the Guarantee constitute the entire contract
between the parties hereto with respect to the subject matter hereof, and shall
supersede all prior agreements, including the Original Agreement. This Restated
Security Agreement may not be amended, modified or supplemented except by a
written agreement signed by each party.

          5.2 Severability. If one or more provisions of this Agreement are held
to be invalid, illegal or unenforceable under applicable law, portions of such
provisions, or such provisions in their entirety, to the extent necessary, shall
be severed from this Agreement, and the balance of this Agreement shall be
enforceable in accordance with its terms.

          5.3 Notices. All notices and other communications hereunder shall be
in writing and shall be deemed to have been duly given if hand delivered,
transmitted by telegram, telex or telecopy or mailed by registered or certified
mail, postage prepaid, return receipt requested, if to any Debtor at the address
of Techfarm indicated at the beginning of this Agreement and if to the Secured
Party at the address indicated at the beginning of this Agreement, or to such
other address as the person to whom notice is given may have previously
furnished to the other parties in writing in accordance herewith. Notices given
by telegram, telex or telecopy and any notices of change of address shall be
effective only upon receipt. All other notices sent by mail shall be effective
three (3) days after posting.

          5.4  Counterparts; Enforceability.  This Agreement may be executed in
two or more counterparts, each of which shall be deemed an original, but all of
which together shall constitute one and the same instrument.

          5.5 Governing Law. It is the intention of the parties hereto that the
internal laws of the State of California (irrespective of its choice of law
principles) shall govern the validity of this Agreement, the construction of its
terms, and the interpretation and enforcement of the rights and duties of the
parties hereto. The parties hereto acknowledge that certain actions may need to
be taken under the laws of jurisdictions other than California in order to carry
out the transactions contemplated by this Agreement.



          5.6 Binding Upon Successors and Assigns. This Agreement and the rights
and obligations of the parties hereunder shall be binding upon, and inure to the
benefit of, the permitted successors and assigns of the parties hereto.

          5.7 Change of Address. Techfarm and each Debtor agree to notify the
Secured Party of any change of address of such person's principal place of
business.

          IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the day and year first above written.

Techfarm:                         Secured Party:

TECHFARM, INC.                    CHIPS AND TECHNOLOGIES, INC.

By:  /s/                          By: /s/
- -----------------------------     --------------------------------

Title: /s/                        Title: /s/
- -----------------------------     --------------------------------



CHIPS & TECHNOLOGIES JV CYPRUS    SUMMIT SYSTEMS JV

LTD.

By: /s/                           By: /s/
- -----------------------------     --------------------------------

Title: /s/                        Title: /s/
- -----------------------------     --------------------------------