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                                   FAFCO, INC.

                AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT

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                                TABLE OF CONTENTS



                                                                                                                       PAGE
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1.    DEFINITIONS AND CONSTRUCTION...................................................................................     1
      1.1       Definitions..........................................................................................     1
      1.2       Accounting Terms.....................................................................................    10

2.    LOAN AND TERMS OF PAYMENT......................................................................................    10
      2.1       Advances.............................................................................................    10
      2.2       Overadvances.........................................................................................    10
      2.3       Interest Rates, Payments, and Calculations...........................................................    10
      2.4       Crediting Payments...................................................................................    11
      2.5       Fees.................................................................................................    11
      2.6       Additional Costs.....................................................................................    12
      2.7       Term.................................................................................................    12

3.    CONDITIONS OF ADVANCES.........................................................................................    12
      3.1       Conditions Precedent to Initial Advance..............................................................    12
      3.2       Conditions Precedent to all Advances.................................................................    13

4.    CREATION OF SECURITY INTERESTS.................................................................................    13
      4.1       Grant of Security Interest...........................................................................    13
      4.2       Delivery of Additional Documentation Required........................................................    13
      4.3       Right to Inspect.....................................................................................    14

5.    REPRESENTATIONS AND WARRANTIES.................................................................................    14
      5.1       Due Organization and Qualification...................................................................    14
      5.2       Due Authorization, No Conflict.......................................................................    14
      5.3       No Prior Encumbrances................................................................................    14
      5.4       Bona Fide Eligible Accounts..........................................................................    14
      5.5       Merchantable Inventory...............................................................................    14
      5.6       Name, Location of Chief Executive Office.............................................................    14
      5.7       Litigation...........................................................................................    15
      5.8       No Material Adverse Change in Financial Statements...................................................    15
      5.9       Solvency.............................................................................................    15
      5.10      Regulatory Compliance................................................................................    15
      5.11      Environmental Condition..............................................................................    15
      5.12      Taxes................................................................................................    16
      5.13      Subsidiaries.........................................................................................    16
      5.14      Government Consents..................................................................................    16
      5.15      Full Disclosure......................................................................................    16

6.    AFFIRMATIVE COVENANTS .........................................................................................    16
      6.1       Good Standing........................................................................................    16
      6.2       Government Compliance................................................................................    16
      6.3       Financial Statements, Reports, Certificates..........................................................    16
      6.4       Inventory, Returns...................................................................................    17
      6.5       Taxes................................................................................................    17
      6.6       Insurance............................................................................................    18
      6.7       Principal Depository.................................................................................    18
      6.8       Quick Ratio..........................................................................................    18
      6.9       Debt Net Worth Ratio.................................................................................    18
      6.10      Tangible Net Worth...................................................................................    18
      6.11      Profitability........................................................................................    18
      6.12      Registration of Intellectual Property Rights.........................................................    18


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      6.13      Further Assurances...................................................................................    19

7.    NEGATIVE COVENANTS.............................................................................................    19
      7.1       Dispositions.........................................................................................    19
      7.2       Change in Business...................................................................................    19
      7.3       Mergers or Acquisitions..............................................................................    19
      7.4       Indebtedness.........................................................................................    20
      7.5       Encumbrances.........................................................................................    20
      7.6       Distributions........................................................................................    20
      7.7       Investments..........................................................................................    20
      7.8       Transactions with Affiliates.........................................................................    20
      7.9       Subordinated Debt....................................................................................    20
      7.10      Inventory............................................................................................    20
      7.11      Compliance...........................................................................................    20

8.    EVENTS OF DEFAULT..............................................................................................    21
      8.1       Payment Default......................................................................................    21
      8.2       Covenant Default.....................................................................................    21
      8.3       Material Adverse Change..............................................................................    21
      8.4       Attachment...........................................................................................    21
      8.5       Insolvency...........................................................................................    22
      8.6       Other Agreements.....................................................................................    22
      8.7       Judgments............................................................................................    22
      8.8       Misrepresentations...................................................................................    22

9.    BANK'S RIGHTS AND REMEDIES.....................................................................................    22
      9.1       Rights and Remedies..................................................................................    22
      9.2       Power of Attorney....................................................................................    23
      9.3       Accounts Collection..................................................................................    24
      9.4       Bank Expenses........................................................................................    24
      9.5       Bank's Liability for Collateral......................................................................    24
      9.6       Remedies Cumulative..................................................................................    24
      9.7       Demand; Protest......................................................................................    24

10.   NOTICES .......................................................................................................    25

11.   CHOICE OF LAW AND VENUE; JURY TRIAL WAIVER.....................................................................    25

12.   GENERAL PROVISIONS.............................................................................................    26
      12.1      Successors and Assigns...............................................................................    26
      12.2      Indemnification......................................................................................    27
      12.3      Time of Essence......................................................................................    27
      12.4      Severability of Provisions...........................................................................    27
      12.5      Amendments in Writing, Integration...................................................................    27
      12.6      Counterparts.........................................................................................    27
      12.7      Survival.............................................................................................    27
      12.8      Confidentiality......................................................................................    28


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         This AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT is entered into
as of June 5,1996, by and between SILICON VALLEY BANK ("Bank") and FAFCO, INC.
("Borrower").


                                    RECITALS

         A. Borrower and Bank are parties to that certain Business Loan
Agreement dated June 10, 1992 and that certain Commercial Security Agreement
dated June 3, 1994, each as may have been amended pursuant to Change in Terms
Agreements dated February 15, 1993 and April 29, 1993 (the "Change in Terms
Agreements") and Loan Modification Agreements dated December 9,1993, March 8,
1994, July 27, 1994, June 5, 1995, August 7, 1995 and February 8, 1996 (the
"Loan Modification Agreements") and as may have been further amended.

         B. Borrower has executed a Promissory Note dated June 10, 1992 in favor
of Bank, as may have been amended by the Change in Terms Agreements and the Loan
Modification Agreements and as may have been further amended.

         C. Borrower wishes to continue to borrow money from Bank, and Bank
desires to continue to extend credit to Borrower. This Agreement sets forth the
terms on which Bank will advance credit to Borrower, and Borrower will repay the
amounts owing to Bank.


                                    AGREEMENT

         The parties agree as follows:

         1.       DEFINITIONS AND CONSTRUCTION

                  1.1 Definitions. As used in this Agreement, the following
terms shall have the following definitions:

                           "Accounts" means all presently existing and hereafter
arising accounts, contract rights, and all other forms of obligations owing to
Borrower arising out of the sale or lease of goods (including, without
limitation, the licensing of software and other technology) or the rendering of
services by Borrower, whether or not earned by performance, and any and all
credit insurance, guaranties, and other security therefor, as well as all
merchandise returned to or reclaimed by Borrower and Borrower's Books relating
to any of the foregoing.

                           "Advance" or "Advances" means an advance under the
Revolving Facility.

                           "Affiliate" means, with respect to any Person, any
Person that owns or controls directly or indirectly such Person, any Person that
controls or is controlled by or is under common control with such Person, and
each of such Person's senior executive officers, directors, and partners.

                           "Bank Expenses" means all: reasonable costs or
expenses (including reasonable attorneys' fees and expenses) incurred in
connection with the preparation, negotiation, administration, and enforcement of
the Loan Documents; and Bank's reasonable attorneys' fees and expenses incurred
in amending, enforcing or defending the Loan Documents, whether or not suit is
brought.

                           "Borrower's Books" means all of Borrower's books and
records including: ledgers; records concerning Borrower's assets or liabilities,
the Collateral, business operations or financial condition; and all computer
programs, or tape files, and the equipment, containing such information.

                           "Borrowing Base" has the meaning set forth in Section
2.1 hereof.

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                           "Business Day" means any day that is not a Saturday,
Sunday, or other day on which banks in the State of California are authorized or
required to close.

                           "Closing Date" means the date of this Agreement.

                           "Code" means the California Uniform Commercial Code.

                           "Collateral" means the property described on Exhibit
A attached hereto.

                           "Committed Line" means One Million Dollars
($1,000,000).

                           "Contingent Obligation" means, as applied to any
Person, any direct or indirect liability, contingent or otherwise, of that
Person with respect to (i) any indebtedness, lease, dividend, letter of credit
or other obligation of another, including, without limitation, any such
obligation directly or indirectly guaranteed, endorsed, co-made or discounted or
sold with recourse by that Person, or in respect of which that Person is
otherwise directly or indirectly liable; (ii) any obligations with respect to
undrawn letters of credit issued for the account of that Person; and (iii) all
obligations arising under any interest rate, currency or commodity swap
agreement, interest rate cap agreement, interest rate collar agreement, or other
agreement or arrangement designated to protect a Person against fluctuation in
interest rates, currency exchange rates or commodity prices; provided, however,
that the term "Contingent Obligation" shall not include endorsements for
collection or deposit in the ordinary course of business. The amount of any
Contingent Obligation shall be deemed to be an amount equal to the stated or
determined amount of the primary obligation in respect of which such Contingent
Obligation is made or, if not stated or determinable, the maximum reasonably
anticipated liability in respect thereof as determined by such Person in good
faith; provided, however, that such amount shall not in any event exceed the
maximum amount of the obligations under the guarantee or other support
arrangement.

                           "Current Liabilities" means, as of any applicable
date, all amounts that should, in accordance with GAAP, be included as current
liabilities on the consolidated balance sheet of Borrower and its Subsidiaries,
as at such date, plus, to the extent not already included therein, all
outstanding Advances made under this Agreement, including all Indebtedness that
is payable upon demand or within one year from the date of determination thereof
unless such Indebtedness is renewable or extendable at the option of Borrower or
any Subsidiary to a date more than one year from the date of determination, but
excluding Subordinated Debt.

                           "Daily Balance" means the amount of the Obligations
owed at the end of a given day.

                           "Eligible Accounts" means those Accounts that arise
in the ordinary course of Borrower's business that comply with all of Borrower's
representations and warranties to Bank set forth in Section 5.4; provided, that
standards of eligibility may be fixed and revised from time to time by Bank in
Bank's reasonable judgment and upon thirty (30) days prior written notification
thereof to Borrower in accordance with the provisions hereof. Unless otherwise
agreed to by Bank, Eligible -Accounts shall not include the following:

                           (a) Accounts that the account debtor has failed to
pay within ninety (90) days of invoice date;

                           (b) Accounts with respect to an account debtor, fifty
percent (50%) of whose Accounts the account debtor has failed to pay within
ninety (90) days of invoice date;

                           (c) Accounts with respect to which the account debtor
is an officer, employee, or agent of Borrower;

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                           (d) Accounts with respect to which goods are placed
on consignment, guaranteed sale, sale or return, sale on approval, bill and
hold, or other terms by reason of which the payment by the account debtor may be
conditional;

                           (e) Accounts with respect to which the account debtor
is an Affiliate of Borrower;

                           (f) Accounts with respect to which the account debtor
does not have its principal place of business in the United States, except for
Eligible Foreign Accounts;

                           (g) Accounts with respect to which the account debtor
is the United States or any department, agency, or instrumentality of the United
States, except to the extent Borrower has filed notices under the Assignment of
Claims Act in a form acceptable to Bank;

                           (h) Accounts with respect to which Borrower is liable
to the account debtor for goods sold or services rendered by the account debtor
to Borrower, but only to the extent of any amounts owing to the account debtor
against amounts owed to Borrower;

                           (i) Accounts with respect to an account debtor,
including Subsidiaries and Affiliates, whose total obligations to Borrower
exceed twenty-five percent (25%) of all Accounts, to the extent such obligations
exceed the aforementioned percentage;

                           (j) Accounts with respect to which the account debtor
disputes liability or makes any claim with respect thereto as to which Bank
believes, in its sole discretion, that there may be a basis for dispute (but
only to the extent of the amount subject to such dispute or claim), or is
subject to any Insolvency Proceeding, or becomes insolvent, or goes out of
business; and

                           (k) Accounts the collection of which Bank reasonably
determines to be doubtful.

                           "Eligible Foreign Accounts" means Accounts with
respect to which the account debtor does not have its principal place of
business in the United States and that are: (1) covered by credit insurance in
form and amount, and by an insurer satisfactory to Bank less the amount of any
deductible(s) which may be or become owing thereon; or (2) supported by one or
more letters of credit in favor of Bank as beneficiary, in an amount and of a
tenor, and issued by a financial institution, acceptable to Bank; or (3) that
Bank approves on a case-by-case basis.

                           "Equipment" means all present and future machinery,
equipment, tenant improvements, furniture, fixtures, vehicles, tools, parts and
attachments in which Borrower has any interest.

                           "ERISA" means the Employment Retirement Income
Security Act of 1974, as amended, and the regulations thereunder.

                           "GAAP" means generally accepted accounting principles
as in effect from time to time.

                           "Indebtedness" means (a) all indebtedness for
borrowed money or the deferred purchase price of property or services, including
without limitation reimbursement and other obligations with respect to surety
bonds and letters of credit, (b) all obligations evidenced by notes, bonds,
debentures or similar instruments, (c) all capital lease obligations and (d) all
Contingent Obligations.

                           "Insolvency Proceeding" means any proceeding
commenced by or against any person or entity under any provision of the United
States Bankruptcy Code, as amended, or under any

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other bankruptcy or insolvency law, including assignments for the benefit of
creditors, formal or informal moratoria, compositions, extension generally with
its creditors, or proceedings seeking reorganization, arrangement, or other
relief.

                           "Inventory" means all present and future inventory in
which Borrower has any interest, including merchandise, raw materials, parts,
supplies, packing and shipping materials, work in process and finished products
intended for sale or lease or to be furnished under a contract of service, of
every kind and description now or at any time hereafter owned by or in the
custody or possession, actual or constructive, of Borrower, including such
inventory as is temporarily out of its custody or possession or in transit and
including any returns upon any accounts or other proceeds, including insurance
proceeds, resulting from the sale or disposition of any of the foregoing and any
documents of title representing any of the above, and Borrower's Books relating
to any of the foregoing.

                           "Investment" means any beneficial ownership of
(including stock, partnership interest or other securities) any Person, or any
loan, advance or capital contribution to any Person.

                           "IRC" means the Internal Revenue Code of 1986, as
amended, and the regulations thereunder.

                           "Lien" means any mortgage, lien, deed of trust,
charge, pledge, security interest or other encumbrance.

                           "Loan Documents" means, collectively, this Agreement,
any note or notes executed by Borrower, and any other agreement entered into
between Borrower and Bank in connection with this Agreement, all as amended or
extended from time to time.

                           "Material Adverse Effect" means a material adverse
effect on (i) the business operations or condition (financial or otherwise) of
Borrower and its Subsidiaries taken as a whole or (ii) the ability of Borrower
to repay the Obligations.

                           "Maturity Date" means the day immediately before the
first anniversary of the Closing Date.

                           "Negotiable Collateral" means all of Borrower's
present and future letters of credit of which it is a beneficiary, notes,
drafts, instruments, securities, documents of title, and chattel paper, and
Borrower's Books relating to any of the foregoing.

                           "Obligations" means all debt, principal, interest,
Bank Expenses and other amounts owed to Bank by Borrower pursuant to this
Agreement or any other agreement, whether absolute or contingent, due or to
become due, now existing or hereafter arising, including any interest that
accrues after the commencement of an Insolvency Proceeding and including any
debt, liability, or obligation owing from Borrower to others that Bank may have
obtained by assignment or otherwise.

                           "Periodic Payments" means all installments or similar
recurring payments that Borrower may now or hereafter become obligated to pay to
Bank pursuant to the terms and provisions of any instrument, or agreement now or
hereafter in existence between Borrower and Bank.

                           "Permitted Indebtedness" means:

                           (a) Indebtedness of Borrower in favor of Bank arising
under this Agreement or any other Loan Document;

                           (b) Indebtedness existing on the Closing Date and
disclosed in the Schedule;

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                           (c) Indebtedness to trade creditors and with respect
to surety bonds and similar obligations incurred in the Ordinary cause of
business.

                           (d) Subordinated Debt;

                           (e) Indebtedness of Borrower to any Subsidiary and
Contingent Obligations of any Subsidiary with respect to obligations of Borrower
(provided that the primary obligations are not prohibited hereby), and
Indebtedness of any Subsidiary to any other Subsidiary and Contingent
Obligations of any Subsidiary with respect to obligations of any other
Subsidiary (provided that the primary obligations are not prohibited hereby);

                           (f) Indebtedness secured by Permitted Liens;

                           (g) Capital leases or indebtedness incurred solely to
purchase equipment which is secured in accordance with clause (c) of "Permitted
Liens" below and is not in excess of the lesser of the purchase price of such
equipment or the fair market value of such equipment on the date of acquisition;
and

                           (h) Extensions, refinancings, modifications,
amendments and restatements of any of items of Permitted Indebtedness (a)
through (g) above, provided that the principal amount thereof is not increased
or the terms thereof are not modified to impose more burdensome terms upon
Borrower or its Subsidiary, as the case may be.

                           "Permitted Investment" means:

                           (a) Investments existing on the Closing Date
disclosed in the Schedule;

                           (b) (i) marketable direct obligations issued or
unconditionally guaranteed by the United States of America or any agency or any
State thereof maturing within one (1) year from the date of acquisition thereof,
(ii) commercial paper maturing no more than one (1) year from the date of
creation thereof and currently having the highest rating obtainable from either
Standard & Poor's Corporation or Moody's Investors Service, Inc., and (iii)
certificates of deposit maturing no more than one (1) year from the date of
investment therein issued by Bank, and (iv) any Investments permitted by
Borrower's investment policy, as amended from time to time, provided that such
investment policy (any such amendment thereto) has been approved by Bank;

                           (c) Investments consisting of the endorsement of
negotiable instrument for deposit or collection or similar transaction in the
ordinary course of business;

                           (d) Investments accepted in connection with Transfers
permitted by Section 7.1;

                           (e) Investments (whether consisting of the purchase
or securities, loans, capital contribution, or otherwise) of Subsidiaries in or
to other Subsidiaries or in Borrower;

                           (f) Investments consisting of (i) compensation of
employees, officers and directors of Borrower or its Subsidiaries so long as the
Board of Directors of Borrower determines that such compensation is in the best
interests of Borrower, (ii) travel advances, employee relocation loans and other
employee loans and advances in the ordinary course of business, and (iii) loans
to employees, officers or directors relating to the purchase of equity
securities of Borrower or its Subsidiaries pursuant to employee stock purchase
plans or agreements approved by Borrower's Board of Directors;

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                           (g) Investments (including debt obligations) received
in connection with the bankruptcy or reorganization of customers or suppliers
and in settlement of delinquent obligations of, and other disputes with,
customers or suppliers arising in the ordinary course of business;

                           (h) Investments pursuant to or arising under currency
agreements or interest rate agreements entered into in the ordinary course of
business;

                           (i) Investments consisting of notes receivable of, or
prepaid royalties and other credit extensions, to customers and suppliers who
are not Affiliates, in the ordinary course of business; provided that this
paragraph (i) shall not apply to Investments by Borrower in any Subsidiary;

                           (j) Investments constituting acquisitions permitted
under Section 7.3; and

                           (k) Deposit accounts of Borrower in which Bank has a
Lien prior to any other lien.

                           "Permitted Liens" means the following:

                           (a) Any Liens existing on the Closing Date and
disclosed in the Schedule or arising under this Agreement or the other Loan
Documents;

                           (b) Liens for taxes, fees, assessments or other
governmental charges or levies, either not delinquent or being contested in good
faith by appropriate proceedings, provided the same have no priority over any of
Bank's security interests;

                           (c) Liens (i) upon or in any equipment acquired or
held by Borrower or any of its Subsidiaries to secure the purchase price of such
equipment or indebtedness incurred solely for the purpose of financing the
acquisition of such equipment, or (ii) existing on such equipment at the time of
its acquisition, provided that the Lien is confined solely to the property so
acquired and improvements thereon, and the proceeds of such equipment;

                           (d) Liens on Equipment leased by Borrower or any
Subsidiary pursuant to an operating or capital lease in the ordinary course of
business (including proceeds thereof and accessions thereto) incurred solely for
the purpose of financing the lease of such Equipment (including Liens pursuant
to leases permitted pursuant to Section 7.1 and Liens arising from UCC financing
statements regarding leases permitted by this Agreement);

                           (e) Leases or subleases and license and sublicenses
granted to others in the ordinary course of Borrower's business not interfering
in any material respect with the business of Borrower and its Subsidiaries taken
as a whole, and any interest or title of a lessor, licensor or under any lease
or license;

                           (f) Liens on assets (including the proceeds thereof
and accessions thereto) that existed at the time such assets were acquired by
Borrower or any Subsidiary (including Liens on assets of any corporation that
existed at the time it became or becomes a Subsidiary); provided such Liens are
not granted in contemplation of or in connection with the acquisition of such
asset by Borrower or a Subsidiary;

                           (g) Liens arising from judgments, decrees or
attachments in circumstances not constituting an Event of Default under Section
8.8;

                           (h) Easements, reservations, rights-of-way,
restrictions, minor defects or irregularities in title and other similar charges
or encumbrances affecting real property not constituting a Material Adverse
Effect;

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                           (i) Liens in favor of customs and revenue authorities
arising as a matter of law to secure payments of customs duties in connection
with the importation of goods;

                           (j) Liens that are not prior to the Lien of Bank
which constitute rights of set-off of a customary nature or banker's Liens with
respect to amounts on deposit, whether arising by operation of law or by
contract, in connection with arrangement entered in to with banks in the
ordinary course of business;

                           (k) Earn-out and royalty obligations existing on the
date hereof or entered into in connection with an acquisition permitted by
Section 7.3;

                           (l) Liens incurred in connection with the extension,
renewal or refinancing of the indebtedness secured by liens of the type
described in clauses (a), (c), (d), (e), (f) and (k) above, provided that any
extension, renewal or replacement Lien shall be limited to the property
encumbered by the existing Lien and the principal amount of the indebtedness
being extended, renewed or refinanced does not increase; and

                           (m) Liens on insurance proceeds in favor of insurance
companies granted solely as security for financed premiums.

                           "Person" means any individual, sole proprietorship,
partnership, limited liability company, joint venture, trust, unincorporated
organization, association, corporation, institution, public benefit corporation,
firm, joint stock company, estate, entity or governmental agency.

                           "Prime Rate" means the variable rate of interest, per
annum, most recently announced by Bank, as its "prime rate," whether or not such
announced rate is the lowest rate available from Bank.

                           "Quick Assets" means, at any date as of which the
amount thereof shall be determined, the consolidated cash, cash-equivalents,
accounts receivable and investments, with maturities not to exceed 90 days, of
Borrower determined in accordance with GAAP.

                           "Responsible Officer" means each of the Chief
Executive Officer, the Chief Financial Officer and the Controller of Borrower.

                           "Revolving Facility" means the facility under which
Borrower may request Bank to issue cash advances, as specified in Section 2.1
hereof.

                           "Schedule" means the schedule of exceptions, if any,
attached hereto.

                           "Subordinated Debt" means any debt incurred by
Borrower that is subordinated to the debt owing by Borrower to Bank on terms
reasonably acceptable to Bank (and identified as being such by Borrower and
Bank).

                           "Subsidiary" means any corporation or partnership in
which (i) any general partnership interest or (ii) more than 50% of the stock of
which by the terms thereof ordinary voting power to elect the Board of
Directors, managers or trustees of the entity shall, at the time as of which any
determination is being made, be owned by Borrower, either directly or through an
Affiliate.

                           "Tangible Net Worth" means at any date as of which
the amount thereof shall be determined, the consolidated total assets of
Borrower and its Subsidiaries minus, without duplication, (i) the sum of any
amounts attributable to (a) goodwill, (b) intangible items such as unamortized
debt discount and expense, patents, trade and service marks and names,
copyrights and

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research and development expenses except prepaid expenses, and
(c) all reserves not already deducted from assets, and (ii) Total Liabilities.

                           "Total Liabilities" means at any date as of which the
amount thereof shall be determined, all obligations that should, in accordance
with GAAP be classified as liabilities on the consolidated balance sheet of
Borrower, including in any event all Indebtedness (other than Contingent
Obligations) but specifically excluding Subordinated Debt.

                  1.2 Accounting Terms. All accounting terms not specifically
defined herein shall be construed in accordance with GAAP and all calculations
made hereunder shall be made in accordance with GAAP. When used herein, the
terms "financial statements" shall include the notes and schedules thereto.

         2. LOAN AND TERMS OF PAYMENT

                  2.1 Advances. Subject to and upon the terms and conditions of
this Agreement, Bank agrees to make Advances to Borrower in an aggregate amount
not to exceed the lesser of (i) the Committed Line or (ii) the Borrowing Base.
For purposes of this Agreement, "Borrowing Base" shall mean an amount equal to
seventy-five percent (75%) of Eligible Accounts. Subject to the terms and
conditions of this Agreement, amounts borrowed pursuant to this Section 2.1 may
be repaid and reborrowed at any time during the term of this Agreement.

         Whenever Borrower desires an Advance, Borrower will notify Bank by
facsimile transmission or telephone no later than 3:00 p.m. California time, on
the Business Day that the Advance is to be made. Each such notification shall be
promptly confirmed by a Payment/Advance Form in substantially the form of
Exhibit B hereto. Bank is authorized to make Advances under this Agreement,
based upon instructions received from a Responsible Officer, or without
instructions if in Bank's discretion such Advances are necessary to meet
Obligations which have become due and remain unpaid. Bank shall be entitled to
rely on any telephonic notice given by a person who Bank reasonably believes to
be a Responsible Officer, and Borrower shall indemnify and hold Bank harmless
for any damages or loss suffered by Bank as a result of such reliance. Bank will
credit the amount of Advances made under this Section 2.1 to Borrower's deposit
account.

         The Revolving Facility shall terminate on the Maturity Date, at which
time all Advances under this Section 2.1 and all other amounts outstanding under
this Agreement shall be immediately due and payable.

                  2.2 Overadvances. If, at any time or for any reason, the
amount of Obligations owed by Borrower to Bank is greater than the lesser of the
Committed Line or the Borrowing Base, Borrower shall immediately pay to Bank, in
cash, the amount of such excess.

                  2.3 Interest Rates, Payments, and Calculations.

                           (a) Interest Rate. Except as set forth in Section
2.3(b), any Advances shall bear interest, on the average Daily Balance, at a
rate equal to two and one-half (2.5) percentage points above the Prime Rate.

                           (b) Default Rate. All Obligations shall bear
interest, from and after the occurrence of an Event of Default, at a rate equal
to five (5) percentage points above the interest rate applicable immediately
prior to the occurrence of the Event of Default.

                           (c) Payments. Interest hereunder shall be due and
payable on the fourth calendar day of each month during the term hereof. Bank
shall, at its option, charge such interest, all Bank Expenses, and all Periodic
Payments against any of Borrower's deposit accounts or against the Committed
Line, in which case those amounts shall thereafter accrue interest at the rate
then

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applicable hereunder. Any interest not paid when due shall be compounded by
becoming a part of the Obligations, and such interest shall thereafter accrue
interest at the rate then applicable hereunder.

                           (d) Computation. In the event the Prime Rate is
changed from time to time hereafter, the applicable rate of interest hereunder
shall be increased or decreased effective as of 12:01 a.m. on the day the Prime
Rate is changed, by an amount equal to such change in the Prime Rate. All
interest chargeable under the Loan Documents shall be computed on the basis of a
three hundred sixty (360) day year for the actual number of days elapsed.

                  2.4 Crediting Payments. Prior to the occurrence of an Event of
Default, Bank shall credit a wire transfer of funds, check or other item of
payment to such deposit account or Obligation as Borrower specifies. After the
occurrence of an Event of Default, the receipt by Bank of any wire transfer of
funds, check, or other item of payment shall be immediately applied to
conditionally reduce Obligations, but shall not be considered a payment on
account unless such payment is of immediately available federal funds or unless
and until such check or other item of payment is honored when presented for
payment. Notwithstanding anything to the contrary contained herein, any payment
(other than a wire transfer of immediately available funds) received by Bank
after 3:00 p.m. California time shall be deemed to have been received by Bank as
of the opening of business on the immediately following Business Day. Whenever
any payment to Bank under the Loan Documents would otherwise be due (except by
reason of acceleration) on a date that is not a Business Day, such payment shall
instead be due on the next Business Day, and additional fees or interest, as the
case may be, shall accrue and be payable for the period of such extension.

                  2.5 Fees. Borrower shall pay to Bank the following:

                           (a) Facility Fee. A Facility Fee equal to Seven
Thousand Five Hundred Dollars ($7,500), which fee shall be due on the Closing
Date and shall be fully earned and nonrefundable;

                           (b) Financial Examination and Appraisal Fees. Bank's
customary fees and out-of-pocket expenses for Bank's audits of Borrower's
Accounts, and for each appraisal of Collateral and financial analysis and
explanation of Borrower performed from time to time by Bank or its agents;

                           (c) Bank Expenses. Upon the date hereof, all Bank
Expenses incurred through the Closing Date, including reasonable attorneys' fees
and expenses and, after the date hereof, all Bank Expenses upon delivery of an
invoice therefor.

                  2.6 Additional Costs. In case any law, regulation, treaty or
official directive or the interpretation or application thereof by any court or
any governmental authority charged with the administration thereof or the
compliance with any guideline or request of any central bank or other
governmental authority (whether or not having the force of law):

                           (a) subjects Bank to any tax with respect to payments
of principal or interest or any other amounts payable hereunder by Borrower or
otherwise with respect to the transactions contemplated hereby (except for taxes
on the overall net income of Bank imposed by the United States of America or any
political subdivision thereof);

                           (b) imposes, modifies or deems applicable any deposit
insurance, reserve, special deposit or similar requirement against assets held
by, or deposits in or for the account of, or loans by, Bank; or

                           (c) imposes upon Bank any other condition with
respect to its performance under this Agreement,

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and the result of any of the foregoing is to increase the cost to Bank, reduce
the income receivable by Bank or impose any expense upon Bank with respect to
any loans, Bank shall notify Borrower thereof. Borrower agrees to pay to Bank
the amount of such increase in cost, reduction in income or additional expense
as and when such Cost, reduction or expense is incurred or determined, upon
presentation by Bank of a statement of the amount and setting forth Bank's
calculation thereof, all in reasonable detail, which statement shall be deemed
true and correct absent manifest error; provided, however, that Borrower shall
not be liable for any such amount attributable to any period prior to the date
one hundred eighty (180) days prior to the date of such certificate.

                  2.7 Term. This Agreement shall become effective on the Closing
Date and, subject to Section 12.7, shall continue in full force and effect for a
term ending on the Maturity Date. Notwithstanding the foregoing, Bank shall have
the right to terminate its obligation to make Advances under this Agreement
immediately and without notice upon the occurrence and during the continuance of
an Event of Default. Notwithstanding termination, Bank's Lien on the Collateral
shall remain in effect for so long as any Obligations (excluding Obligations
under Section 2.6 and 12.2 to the extent they remain inchoate at the time
outstanding payment obligations are paid in full) are outstanding.

         3. CONDITIONS OF ADVANCES

                  3.1 Conditions Precedent to Initial Advance. The obligation of
Bank to make the initial Advance is subject to the condition precedent that Bank
shall have received, in form and substance satisfactory to Bank, the following:

                           (a) this Agreement;

                           (b) a certificate of the Secretary of Borrower with
respect to bylaws, incumbency and resolutions authorizing the execution and
delivery of this Agreement;

                           (c) a good standing certificate for Borrower from the
Secretary of State of California, dated as of a recent date;

                           (d) collateral assignment and patent mortgage;

                           (e) payment of the fees and Bank Expenses then due
specified in Section 2.5 hereof; and

                           (f) such other documents, and completion of such
other matters, as Bank may reasonably deem necessary or appropriate.

                  3.2 Conditions Precedent to all Advances. The obligation of
Bank to make each Advance, including the initial Advance, is further subject to
the following conditions:

                           (a) timely receipt by Bank of the Payment/Advance
Form as provided in Section 2.1; and

                           (b) the representations and warranties contained in
Section 5 shall be true and correct in all material respects on and as of the
date of such Payment/Advance Form and on the effective date of each Advance as
though made at and as of each such date, and no Event of Default shall have
occurred and be continuing, or would result from such Advance (except to the
extent they relate specifically to any earlier date, in which case such
representations and warranties shall continue to have been true and accurate as
of such date). The making of each Advance shall be deemed to be a

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representation and warranty by Borrower on the date of such Advance as to the
accuracy of the facts referred to in this Section 3.2(b).

         4. CREATION OF SECURITY INTEREST

                  4.1 Grant of Security Interest. Borrower grants and pledges to
Bank a continuing security interest in all presently existing and hereafter
acquired or arising Collateral in order to secure prompt repayment of any and
all Obligations and in order to secure prompt performance by Borrower of each of
its covenants and duties under the Loan Documents. Except as set forth in the
Schedule, such security interest constitutes a valid, first priority security
interest in the presently existing Collateral, and will constitute a valid,
first priority security interest in Collateral acquired after the date hereof,
in each case, to the extent that a security interest in such Collateral can be
perfected by the filing of a financing statement or, in the case of Collateral
consisting of instruments, documents, chattel paper or certificated securities,
to the extent that Bank takes possession of such Collateral. Bank agrees to
execute and deliver to Borrower from time to time such Lien releases as Borrower
may request and as are necessary to give to other lenders which finance
equipment for Borrower a first priority security interest in the equipment
financed so long as the Liens and the Indebtedness incurred with respect to such
equipment financing are permitted under this Agreement.

                  4.2 Delivery of Additional Documentation Required. Borrower
shall from time to time execute and deliver to Bank, at the request of Bank, all
Negotiable Collateral, all financing statements and other documents that Bank
may reasonably request, in form satisfactory to Bank, to perfect and continue
perfected Bank's security interests in the Collateral and in order to fully
consummate all of the transactions contemplated under the Loan Documents.

                  4.3 Right to Inspect. Subject to Section 12.8, Bank (through
any of its officers, employees, or agents) shall have the right, upon reasonable
prior notice, from time to time during Borrower's usual business hours, to
inspect Borrower's Books and to make copies thereof and to check, test, and
appraise the Collateral in order to verify Borrower's financial condition or the
amount, condition of, or any other matter relating to, the Collateral.

         5. REPRESENTATIONS AND WARRANTIES.

                  Borrower represents and warrants as follows:

                  5.1 Due Organization and Qualification. Borrower and each
Subsidiary is a corporation duly existing and in good standing under the laws of
its state of incorporation and qualified and licensed to do business in, and is
in good standing in, any state in which the conduct of its business or its
ownership of property requires that it be so qualified, except for states as to
which any failure to so qualify would not have a Material Adverse Effect.

                  5.2 Due Authorization; No Conflict. The execution, delivery,
and performance of the Loan Documents are within Borrower's powers, have been
duly authorized, and are not in conflict with nor constitute a breach of any
provision contained in Borrower's Articles of Incorporation or Bylaws, nor will
they constitute an event of default under any material agreement to which
Borrower is a party or by which Borrower is bound. Borrower is not in default
under any agreement to which it is a party or by which it is bound, which
default would reasonably be expected to have a Material Adverse Effect.

                  5.3 No Prior Encumbrances. Borrower has good and indefeasible
title to the Collateral, free and clear of Liens, except for Permitted Liens.

                  5.4 Bona Fide Eligible Accounts. The Accounts are bona fide
existing obligations. The property giving rise to such Accounts has been
delivered to the account debtor or to the account debtor's agent for immediate
shipment to and unconditional acceptance by the account debtor.

                                       11
   15
Borrower has not received notice of an actual or imminent insolvency Proceeding
of any account debtor, the Accounts of which are included in any Borrowing Base
Certificate as an Eligible Account.

                  5.5 Merchantable Inventory. All Inventory is in all material
respects of good and marketable quality, free from all material defects.

                  5.6 Name; Location of Chief Executive Office. Except as
disclosed in the Schedule, Borrower has not done business under any name other
than that specified on the signature page hereof. The chief executive office of
Borrower is located at the address indicated in Section 10 hereof.

                  5.7 Litigation. Except as set forth in the Schedule, there are
no actions or proceedings pending (or, to Borrower's knowledge, threatened) by
or against Borrower or any Subsidiary before any court or administrative agency
in which a likely decision would reasonably be expected to have a Material
Adverse Effect or a material adverse effect on Borrower's interest or Bank's
security interest in the Collateral.

                  5.8 No Material Adverse Change in Financial Statements. All
consolidated financial statements related to Borrower and any Subsidiary that
have been delivered by Borrower to Bank fairly present in all material respects
Borrower's consolidated financial condition as of the date thereof and
Borrower's consolidated results of operations for the period then ended. There
has not been a material adverse change in the consolidated financial condition
of Borrower since the date of the most recent of such financial statements
submitted to Bank.

                  5.9 Solvency. Borrower is solvent and able to pay its debts
(including trade debts) as they mature.

                  5.10 Regulatory Compliance. Borrower and each Subsidiary has
met the minimum funding requirements of ERISA with respect to any employee
benefit plans subject to ERISA. No event has occurred resulting from Borrower's
failure to comply with ERISA that is reasonably likely to result in Borrower's
incurring any liability that would reasonably be expected to have a Material
Adverse Effect. Borrower is not an "investment company" or a company
"controlled" by an "investment company" within the meaning of the Investment
Company Act of 1940. Borrower is not engaged principally, or as one of the
important activities, in the business of extending credit for the purpose of
purchasing or carrying margin stock (within the meaning of Regulations G, T and
U of the Board of Governors of the Federal Reserve System). Borrower has
complied with all the provisions of the Federal Fair Labor Standards Act.
Borrower has not violated any statutes, laws, ordinances or rules applicable to
it, violation of which could have a Material Adverse Effect.

                  5.11 Environmental Condition. None of Borrower's or any
Subsidiary's properties or assets has ever been used by Borrower or any
Subsidiary or, to the best of Borrower's knowledge, by previous owners or
operators, in the disposal of, or to produce, store, handle, treat, release, or
transport, any hazardous waste or hazardous substance other than in accordance
with applicable law; to the best of Borrower's knowledge, none of Borrower's
properties or assets has ever been designated or identified in any manner
pursuant to any environmental protection statute as a hazardous waste or
hazardous substance disposal site, or a candidate for closure pursuant to any
environmental protection statute; no lien arising under any environmental
protection statute has attached to any revenues or to any real or personal
property owned by Borrower or any Subsidiary; and neither Borrower nor any
Subsidiary has received a summons, citation, notice, or directive from the
Environmental Protection Agency or any other federal, state or other
governmental agency concerning any action or omission by Borrower or any
Subsidiary resulting in the releasing, or otherwise disposing of hazardous waste
or hazardous substances into the environment.

                  5.12 Taxes. Borrower and each Subsidiary has filed or caused
to be filed all tax returns required to be filed, and has paid, or has made
adequate provision for the payment of, all taxes reflected therein.

                                       12
   16
                  5.13 Subsidiaries. Borrower does not own any stock,
partnership interest or other equity securities of any Person, except for
Permitted Investments.

                  5.14 Government Consents. Borrower and each Subsidiary has
obtained all consents, approvals and authorizations of, made all declarations or
filings with, and given all notices to, all governmental authorities that are
necessary for the continued operation of Borrower's business as currently
conducted except where the failure to obtain any such consent, approval or
authorization, to make any such declaration or filing, or to be given any such
notice would not reasonably be expected to have a Material Adverse Effect.

                  5.15 Full Disclosure. No representation, warranty or other
statement made by Borrower in any certificate or written statement furnished to
Bank contains any untrue statement of a material fact or omits to state a
material fact necessary in order to make the statements contained in such
certificates or statements not misleading (it being recognized by Bank that the
projections and forecasts provided by Borrower are not to be viewed as facts and
that actual results during the period or periods covered by any such projections
and forecasts may differ from the projected or forecasted results).

         6. AFFIRMATIVE COVENANTS

                  Borrower covenants and agrees that, without the written
consent of the Bank, until payment in full of all outstanding Obligations, and
for so long as Bank may have any commitment to make an Advance hereunder,
Borrower shall do all of the following:

                  6.1 Good Standing. Borrower shall maintain or cause to be
maintained its and each of its Subsidiaries' corporate existence and good
standing in its jurisdiction of incorporation and maintain qualification in each
jurisdiction in which the failure to so qualify would reasonably be expected to
have a Material Adverse Effect. Borrower shall maintain, and shall cause each of
its Subsidiaries to maintain, in force all licenses, approvals and agreements,
the loss of which would reasonably be expected to have a Material Adverse
Effect.

                  6.2 Government Compliance. Borrower shall meet, and shall
cause each Subsidiary to meet, the minimum funding requirements of ERISA with
respect to any employee benefit plans subject to ERISA. Borrower shall comply,
and shall cause each Subsidiary to comply, with all statutes, laws, ordinances
and government rules and regulations to which it is subject, noncompliance with
which would reasonably be expected to have a Material Adverse Effect or a
material adverse effect on the Collateral or the priority of Bank's Lien on the
Collateral.

                  6.3 Financial Statements, Reports, Certificates. Borrower
shall deliver to Bank: (a) as soon as available, but in any event within thirty
(30) days after the end of each month, a company prepared balance sheet and
income statement covering Borrower's operations during such period, certified by
an officer of Borrower reasonably acceptable to Bank; (b) as soon as available,
but in any event within ninety (90) days after the end of Borrower's fiscal
year, audited financial statements of Borrower prepared in accordance with GAAP,
consistently applied, together with an unqualified opinion on such financial
statements of an independent certified public accounting firm reasonably
acceptable to Bank; (c) within five (5) days upon becoming available, copies of
all statements, reports and notices sent or made available generally by Borrower
to its security holders or to any holders of Subordinated Debt and all reports
on Form 10-K and 10-Q filed with the Securities and Exchange Commission; (d)
promptly upon receipt of notice thereof, a report of any legal actions pending
or threatened against Borrower or any Subsidiary that would reasonably be
expected to result in damages or costs to Borrower or any Subsidiary of One
Hundred Thousand Dollars ($100,000) or more; and (e) such budgets, sales
projections, operating plans or other financial information as Bank may
reasonably request from time to time.

                                       13
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         Within twenty (20) days after the last day of each month, Borrower
shall deliver to Bank a Borrowing Base Certificate signed by a Responsible
Officer in substantially the form of Exhibit C hereto, together with aged
listings of accounts receivable and accounts payable.

         Borrower shall deliver to Bank with the monthly financial statements a
Compliance Certificate signed by a Responsible Officer in substantially the form
of Exhibit D hereto.

         Bank shall have a right from time to time hereafter to audit Borrower's
Accounts at Borrower's expense, provided that such audits will be conducted no
more often than every six (6) months unless an Event of Default has occurred and
is continuing.

                  6.4 Inventory; Returns. Borrower shall keep all Inventory in
good and marketable condition, free from all material defects. Returns and
allowances, if any, as between Borrower and its account debtors shall be on the
same basis and in accordance with the usual customary practices of Borrower, as
they exist at the time of the execution and delivery of this Agreement. Borrower
shall promptly notify Bank of all returns and recoveries and of all disputes and
claims, where the return, recovery, dispute or claim involves more than Fifty
Thousand Dollars ($50,000).

                  6.5 Taxes. Borrower shall make, and shall cause each
Subsidiary to make, due and timely payment or deposit of all material federal,
state, and local taxes, assessments, or contributions required of it by law, and
will execute and deliver to Bank, on demand, appropriate certificates attesting
to the payment or deposit thereof; and Borrower will make, and will cause each
Subsidiary to make, timely payment or deposit of all material tax payments and
withholding taxes required of it by applicable laws, including, but not limited
to, those laws concerning F.I.C.A., F.U.T.A., state disability, and local,
state, and federal income taxes, and will, upon request, furnish Bank with proof
satisfactory to Bank indicating that Borrower or a Subsidiary has made such
payments or deposits; provided that Borrower or a Subsidiary need not make any
payment if the amount or validity of such payment is contested in good faith by
appropriate proceedings and is reserved against (to the extent required by GAAP)
by Borrower.

                  6.6 Insurance.

                           (a) Borrower, at its expense, shall keep the
Collateral insured against loss or damage by fire, theft, explosion, sprinklers,
and all other hazards and risks, and in such amounts, as ordinarily insured
against by other owners in similar businesses conducted in the locations where
Borrower's business is conducted on the date hereof. Borrower shall also
maintain insurance relating to Borrower's ownership and use of the Collateral in
amounts and of a type that are customary to businesses similar to Borrower's.

                           (b) All such policies of insurance shall be in such
form, with such companies, and in such amounts as reasonably satisfactory to
Bank. All such policies of property insurance shall contain a lender's loss
payable endorsement, in a form satisfactory to Bank, showing Bank as an
additional loss payee thereof and all liability insurance policies shall show
the Bank as an additional insured, and shall specify that the insurer must give
at least twenty (20) days notice to Bank before canceling its policy for any
reason. Upon Bank's request, Borrower shall deliver to Bank certified copies of
such policies of insurance and evidence of the payments of all premiums
therefor. So long as no Event of Default has occurred and is continuing,
Borrower shall have the option of applying the proceeds of any casualty policy
to the replacement or repair of destroyed or damaged property; provided, that
after the occurrence and during the continuance of an Event of Default, all
proceeds payable under any such policy shall, at the option of Bank, be payable
to Bank for application to the Obligations.

                  6.7 Principal Depository. Borrower shall maintain its
principal depository and operating accounts with Bank for so long as Bank offers
terms that are competitive with other commercial banks.

                                       14
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                  6.8 Quick Ratio. Borrower shall maintain, as of the last day
of each calendar month, a ratio Quick Assets to Current Liabilities of at least
0.50 to 1.00.

                  6.9 Debt-Net Worth Ratio. Borrower shall maintain, as of the
last day of each calendar month, a ratio of Total Liabilities less Subordinated
Debt to Tangible Net Worth plus subordinated Debt of not more than 2.75 to 1.00.

                  6.10 Tangible Net Worth. Borrower shall maintain, as of the
last day of each calendar month, a Tangible Net Worth plus Subordinated Debt of
not less than One Million Three Hundred Seventy Five Thousand Dollars
($1,375,000.00).

                  6.11 Profitability. As of the last day of each of Borrower's
second, third and fourth fiscal quarters, Borrower shall have a minimum net
profit, measured on a fiscal year to date basis, of not less than One Dollar
($1.00).

                  6.12 Registration of Intellectual Property Rights. Borrower
shall register or cause to be registered (to the extent not already registered)
with the United States Patent and Trademark Office or the United States
Copyright Office, as applicable, those intellectual property rights listed on
Exhibits A, B and C to the Collateral Assignment, Patent Mortgage and Security
Agreement delivered to Bank by Borrower in connection with this Agreement within
thirty (30) days of the date of this Agreement. Borrower shall register or cause
to be registered with the United States Patent and Trademark Office or the
United States Copyright Office, as applicable, those additional intellectual
property rights developed or acquired by Borrower from time to time in
connection with any product prior to the sale or licensing of such product to
any third party, including without limitation revisions or additions to the
intellectual property rights listed on such Exhibits A, B and C. Borrower shall
execute and deliver such additional instruments and documents from time to time
as Bank shall reasonable request to perfect Bank's security interest in such
additional intellectual property rights.

                  6.13 Further Assurances. At any time and from time to time
Borrower shall execute ;and deliver such further instruments and take such
further action as may reasonably be requested by Bank to effect the purposes of
this Agreement.

         7. NEGATIVE COVENANTS

                  Borrower covenants and agrees that, without the prior written
consent of Bank, which shall not be unreasonably withheld so long as any credit
hereunder shall be available and until payment in full of the outstanding
Obligations or for so long as Bank may have any commitment to make any Advances,
Borrower will not do any of the following:

                  7.1 Dispositions. Convey, sell, lease, transfer or otherwise
dispose of (collectively, a "Transfer"), or permit any of its Subsidiaries to
Transfer, all or any part of its business or property, other than: (i) Transfers
of Inventory in the ordinary course of business; (ii) Transfers of non-exclusive
licenses and similar arrangements for the use of the property of Borrower or its
Subsidiaries; or (iii) Transfers of worn-out or obsolete Equipment or Equipment
financed by other vendors; (iv) Transfers which constitute liquidation of
Investments permitted under Section 7.7; and (v) other Transfers not otherwise
permitted by this Section 7.1 not exceeding One Hundred Thousand Dollars
($100,00) in the aggregate in any fiscal year.

                  7.2 Change in Business. Engage in any business, or permit any
of its Subsidiaries to engage in any business, other than the businesses
currently engaged in by Borrower and its Subsidiaries and any business
substantially similar or related thereto (or incidental thereto), or, prior to
the existence of a public market for Borrower's securities, suffer a material
change in Borrower's ownership, other than the sale by Borrower of equity
securities of Borrower. Borrower will not, without thirty (30) days prior
written notification to Bank, relocate its chief executive office.

                                       15
   19
                  7.3 Mergers or Acquisitions. Merge or consolidate, or permit
any of its Subsidiaries to merge or consolidate, with or into any other business
organization, or acquire, or permit any of its Subsidiaries to acquire, all or
substantially all of the capital stock or property of another Person; provided
that this Section 7.3 shall not apply to (i) the purchase of inventory,
equipment or intellectual property rights in any transaction valued at less than
One Hundred Thousand Dollars ($100,000) in the ordinary course of business or
(ii) transactions among Subsidiaries or among Borrower and its Subsidiaries in
which Borrower is the surviving entity.

                  7.4 Indebtedness. Create, incur, assume or be or remain liable
with respect to any Indebtedness, or permit any Subsidiary so to do, other than
Permitted Indebtedness.

                  7.5 Encumbrances. Create, incur, assume or suffer to exist any
Lien with respect to any of its property, or assign or otherwise convey any
right to receive income, including the sale of any Accounts, or permit any of
its Subsidiaries so to do, except for Permitted Liens.

                  7.6 Distributions. Pay any dividends or make any other
distribution or payment on account of or in redemption, retirement or purchase
of any capital stock; provided, that (i) Borrower may declare and make any
dividend payment or other distribution payable in its equity securities, (ii)
Borrower may convert any of its convertible securities into other securities
pursuant to the terms of such convertible securities or otherwise in exchange
therefor and (iii) for so long as an Event of Default has not occurred, Borrower
may repurchase stock from former employees of Borrower in accordance with the
terms of repurchase or similar agreements between Borrower and such employees.

                  7.7 Investments. Directly or indirectly acquire or own, or
make any Investment in or to any Person, or permit any of its Subsidiaries so to
do, other than Permitted Investments.

                  7.8 Transactions with Affiliates. Directly or indirectly enter
into or permit to exist any material transaction with any Affiliate of Borrower
except for transactions that are in the ordinary course of Borrower's business,
upon fair and reasonable terms that are no less favorable to Borrower than would
be obtained in an arm's length transaction with a nonaffiliated Person and
except for transactions with a Subsidiary that are upon fair and reasonable
terms and transactions constituting Permitted Investments.

                  7.9 Subordinated Debt. Make any payment in respect of any
Subordinated Debt, or permit any of its Subsidiaries to make any such payment,
except in compliance with the terms of such Subordinated Debt, or amend any
provision contained in any documentation relating to the Subordinated Debt.

                  7.10 Inventory. Store the Inventory with a bailee,
warehouseman, or similar party unless Bank has received a pledge of the
warehouse receipt covering such Inventory. Except for Inventory sold in the
ordinary course of business and except for such other locations as Bank may
approve in writing, Borrower shall keep the Inventory only at the location set
forth in Section 10 hereof and such other locations of which Borrower gives Bank
prior written notice and as to which Borrower signs and files a financing
statement where needed to perfect Bank's security interest.

                  7.11 Compliance. Become an "investment company" controlled by
an "investment company," within the meaning of the Investment Company Act of
1940, or become principally engaged in, or undertake as one of its important
activities, the business of extending credit for the purpose of purchasing or
carrying margin stock, or use the proceeds of any Advance for such purpose. Fail
to meet the minimum funding requirements of ERISA, permit a Reportable Event or
Prohibited Transaction, as defined in ERISA, to occur, fail to comply with the
Federal Fair Labor Standards Act or violate any law or regulation, which
violation could have a Material Adverse Effect or a material adverse effect on
the Collateral or the priority of Bank's Lien on the Collateral, or permit any
of its Subsidiaries to do any of the foregoing.

                                       16
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         8. EVENTS OF DEFAULT

                  Subject to Section 12.9, any one or more of the following
events shall constitute an Event of Default by Borrower under this Agreement:

                  8.1 Payment Default. If Borrower fails to pay the principal
of, or any interest on, any Advances when due and payable; or fails to pay any
portion of any other Obligations not constituting such principal or interest,
including without limitation Bank Expenses, within thirty (30) days of receipt
by Borrower of an invoice for such other Obligations;

                  8.2 Covenant Default. If Borrower fails to perform any
obligation under Sections 6.7, 6.8, 6.9, 6.10 or 6.11 or violates any of the
covenants contained in Article 7 of this Agreement, or fails or neglects to
perform, keep, or observe any other material term, provision, condition,
covenant, or agreement contained in this Agreement, in any of the Loan
Documents, or in any other present or future agreement between Borrower and Bank
and as to any default under such other term, provision, condition, covenant or
agreement that can be cured, has failed to cure such default within ten (10)
days after Borrower receives notice thereof or any Responsible Officer of
Borrower becomes aware thereof; provided, however, that if the default cannot by
its nature be cured within the ten (10) day period or cannot after diligent
attempts by Borrower be cured within such ten (10) day period, and such default
is likely to be cured within a reasonable time, then Borrower shall have an
additional reasonable period (which shall not in any case exceed thirty (30)
days) to attempt to cure such default, and within such reasonable time period
the failure to have cured such default shall not be deemed an Event of Default
(provided that no Advances will be required to be made during such cure period);

                  8.3 Material Adverse Change. If there occurs a material
adverse change in Borrower's business or financial condition, or if there is a
material impairment of the prospect of repayment of any portion of the
Obligations or a material impairment of the value or priority of Bank's security
interests in the Collateral;

                  8.4 Attachment. If any material portion of Borrower's assets
is attached, seized, subjected to a writ or distress warrant, or is levied upon,
or comes into the possession of any trustee, receiver or person acting in a
similar capacity and such attachment, seizure, writ or distress warrant or levy
has not been removed, discharged or rescinded within thirty (30) days, or if
Borrower is enjoined, restrained, or in any way prevented by court order from
continuing to conduct all or any material part of its business affairs, or if a
judgment or other claim becomes a lien or encumbrance upon any material portion
of Borrower's assets, or if a notice of lien, levy, or assessment is filed of
record with respect to any of Borrower's assets by the United States Government,
or any department, agency, or instrumentality thereof, or by any state, county,
municipal, or governmental agency, and the same is not paid within twenty (20)
days after Borrower receives notice thereof, provided that none of the foregoing
shall constitute an Event of Default where such action or event is stayed or an
adequate bond has been posted pending a good faith contest by Borrower (provided
that no Advances will be required to be made during such cure period);

                  8.5 Insolvency. If Borrower becomes insolvent, or if an
Insolvency Proceeding is commenced by Borrower, or if an Insolvency Proceeding
is commenced against Borrower and is not dismissed or stayed within thirty (30)
days (provided that no Advances will be made prior to the dismissal of such
Insolvency Proceeding);

                  8.6 Other Agreements. If there is a default in any agreement
to which Borrower is a party with a third party or parties resulting in a right
by such third party or parties, whether or not exercised, to accelerate the
maturity of any Indebtedness in an amount in excess of Five Hundred Thousand
Dollars ($500,000) or that would reasonably be expected to have a Material
Adverse Effect;

                                       17
   21
                  8.7 Judgments. If a judgment or judgments for the payment of
money in an amount, individually or in the aggregate, of at least Five Hundred
Thousand Dollars ($500,000) shall be rendered against Borrower and shall remain
unsatisfied and unstayed for a period of thirty (30) days (provided that no
Advances will be made prior to the satisfaction or stay of such judgment); or

                  8.8 Misrepresentations. If any material misrepresentation or
material misstatement exists now or hereafter in any warranty or representation
set forth herein or in any certificate delivered to Bank by any Responsible
Officer pursuant to this Agreement or to induce Bank to enter into this
Agreement or any other Loan Document.

         9. BANK'S RIGHTS AND REMEDIES

                  9.1 Rights and Remedies. Upon the occurrence and during the
continuance of an Event of Default, Bank may, at its election, without notice of
its election and without demand, do any one or more of the following, all of
which are authorized by Borrower:

                           (a) Declare all Obligations, whether evidenced by
this Agreement, by any of the other Loan Documents, or otherwise, immediately
due and payable (provided that upon the occurrence of an Event of Default
described in Section 8.5 all Obligations shall become immediately due and
payable without any action by Bank);

                           (b) Cease advancing money or extending credit to or
for the benefit of Borrower under this Agreement or under any other agreement
between Borrower and Bank;

                           (c) Settle or adjust disputes and claims directly
with account debtors for amounts, upon terms and in whatever order that Bank
reasonably considers advisable;

                           (d) Without notice to or demand upon Borrower, make
such payments and do such acts as Bank considers necessary or reasonable to
protect its security interest in the Collateral. Borrower agrees to assemble the
Collateral if Bank so requires, and to make the Collateral available to Bank as
Bank may designate. Borrower authorizes Bank to enter the premises where the
Collateral is located, to take and maintain possession of the Collateral, or any
part of it, and to pay, purchase, contest, or compromise any encumbrance,
charge, or lien which in Bank's determination appears to be prior or superior to
its security interest and to pay all expenses incurred in connection therewith.
With respect to any of Borrower's owned premises, Borrower hereby grants Bank a
license to enter into possession of such premises and to occupy the same,
without charge, for up to one hundred twenty (120) days in order to exercise any
of Bank's rights or remedies provided herein, at law, in equity, or otherwise;

                           (e) Without notice to Borrower set off and apply to
the Obligations any and all (i) balances and deposits of Borrower held by Bank,
or (ii) indebtedness at any time owing to or for the credit or the account of
Borrower held by Bank;

                           (f) Ship, reclaim, recover, store, finish, maintain,
repair, prepare for sale, advertise for sale, and sell (in the manner provided
for herein) the Collateral. Bank is hereby granted a license or other right,
solely pursuant to the provisions of this Section 9.1, to use, without charge,
Borrower's labels, patents, copyrights, rights of use of any name, trade
secrets, trade names, trademarks, service marks, and advertising matter, or any
property of a similar nature, as it pertains to the Collateral, in completing
production of, advertising for sale, and selling any Collateral and, in
connection with Bank's exercise of its rights under this Section 9.1, Borrower's
rights under all licenses and all franchise agreements shall inure to Bank's
benefit;

                           (g) Sell the Collateral at either a public or private
sale, or both, by way of one or more contracts or transactions, for cash or on
terms, in such manner and at such places (including Borrower's premises) as Bank
determines is commercially reasonable;

                                       18
   22
                           (h) Bank may credit bid and purchase at any public
sale; and

                           (i) Any deficiency that exists after disposition of
the Collateral as provided above will be paid immediately by Borrower.

                  9.2 Power of Attorney. Effective only upon the occurrence and
during the continuance of an Event of Default, Borrower hereby irrevocably
appoints Bank (and any of Bank's designated officers, or employees) as
Borrower's true and lawful attorney to: (a) send requests for verification of
Accounts or notify account debtors of Bank's security interest in the Accounts;
(b) endorse Borrower's name on any checks or other forms of payment or security
that may come into Bank's possession; (c) sign Borrower's name on any invoice or
bill of lading relating to any Account, drafts against account debtors,
schedules and assignments of Accounts, verifications of Accounts, and notices to
account debtors; (d) make, settle, and adjust all claims under and decisions
with respect to Borrower's policies of insurance; and (e) settle and adjust
disputes and claims respecting the accounts directly with account debtors, for
amounts and upon terms which Bank determines to be reasonable; provided Bank may
exercise such power of attorney to sign the name of Borrower on any of the
documents described in Section 4.2 regardless of whether an Event of Default has
occurred. The appointment of Bank as Borrower's attorney in fact, and each and
every one of Bank's rights and powers, being coupled with an interest, is
irrevocable until all of the Obligations have been fully repaid and Bank's
obligation to provide Advances hereunder is terminated.

                  9.3 Accounts Collection. Upon the occurrence and during the
continuation of an Event of Default, Bank may notify any Person owing funds to
Borrower of Bank's security interest in such funds and verify the amount of such
Account. Borrower shall collect all amounts owing to Borrower for Bank, receive
in trust all payments as Bank's trustee, and immediately deliver such payments
to Bank in their original form as received from the account debtor, with proper
endorsements for deposit.

                  9.4 Bank Expenses. If Borrower fails to pay any amounts or
furnish any required proof of payment due to third persons or entities, as
required under the terms of this Agreement, then Bank may do any or all of the
following: (a) make payment of the same or any part thereof; (b) set up such
reserves under the Revolving Facility as Bank deems necessary to protect Bank
from the exposure created by such failure; or (c) obtain and maintain insurance
policies of the type discussed in Section 6.6 of this Agreement, and take any
action with respect to such policies as Bank deems prudent. Any amounts so paid
or deposited by Bank shall constitute Bank Expenses, shall be immediately due
and payable, and shall bear interest at the then applicable rate hereinabove
provided, and shall be secured by the Collateral. Any payments made by Bank
shall not constitute an agreement by Bank to make similar payments in the future
or a waiver by Bank of any Event of Default under this Agreement.

                  9.5 Bank's Liability for Collateral. So long as Bank complies
with its obligations under Section 9207 of the Code, Bank shall not in any way
or manner be liable or responsible for: (a) the safekeeping of the Collateral;
(b) any loss or damage thereto occurring or arising in any manner or fashion
from any cause; (c) any diminution in the value thereof; or (d) any act or
default of any carrier, warehouseman, bailee, forwarding agency, or other person
whomsoever. Subject to the foregoing, all risk of loss, damage or destruction of
the Collateral shall be borne by Borrower.

                  9.6 Remedies Cumulative. Bank's rights and remedies under this
Agreement, the Loan Documents, and all other agreements shall be cumulative.
Bank shall have all other rights and remedies not inconsistent herewith as
provided under the Code, by law, or in equity. No exercise by Bank of one right
or remedy shall be deemed an election, and no waiver by Bank of any Event of
Default on Borrower's part shall be deemed a continuing waiver. No delay by Bank
shall constitute a waiver, election, or acquiescence by it. No waiver by Bank
shall be effective unless made in a written document signed on behalf of Bank
and then shall be effective only in the specific instance and for the specific
purpose for which it was given.

                                       19
   23
                  9.7 Demand; Protest. Borrower waives demand, protest, notice
of protest, notice of dishonor, notice of payment and nonpayment, nonpayment at
maturity, release, compromise, settlement, extension, or renewal of accounts,
documents, instruments, chattel paper, and guarantees at any time held by Bank
on which Borrower may in any way be liable.

         10. NOTICES

                  Unless otherwise provided in this Agreement, all notices or
demands by any party relating to this Agreement or any other agreement entered
into in connection herewith shall be in writing and (except for financial
statements and other informational documents which may be sent by first-class
mail, postage prepaid) shall be personally delivered or sent by a recognized
overnight delivery service, certified mail, postage prepaid, return receipt
requested, or by telefacsimile to Borrower or to Bank, as the case may be, at
its addresses set forth below:

         If to Borrower:            FAFCO, Inc.
                                    2690 Middlefield Road
                                    Redwood City, CA 94063
                                    Attn:  Mr. Alex Watt
                                    FAX:  (415) 363-2890

         If to Bank:                Silicon Valley Bank
                                    3003 Tasman Drive
                                    Santa Clara, California 95054
                                    Attn:  Mr. James Marshall
                                    FAX:  (408) 727-8728

         The parties hereto may change the address at which they are to receive
notices hereunder, by notice in writing in the foregoing manner given to the
other.

         11. CHOICE OF LAW AND VENUE; JURY TRIAL WAIVER

                  This Agreement shall be governed by, and construed in
accordance with, the internal laws of the State of California, without regard to
principles of conflicts of law. Each of Borrower and Bank hereby submits to the
exclusive jurisdiction of the state and Federal courts located in the County of
Santa Clara, State of California. BORROWER AND BANK EACH HEREBY WAIVE THEIR
RESPECTIVE RIGHTS TO A JURY TRIAL OF ANY CLAIM OR CAUSE OF ACTION BASED UPON OR
ARISING OUT OF ANY OF THE LOAN DOCUMENTS OR ANY OF THE TRANSACTIONS CONTEMPLATED
THEREIN, INCLUDING CONTRACT CLAIMS, TORT CLAIMS, BREACH OF DUTY CLAIMS, AND ALL
OTHER COMMON LAW OR STATUTORY CLAIMS. EACH PARTY RECOGNIZES AND AGREES THAT THE
FOREGOING WAIVER CONSTITUTES A MATERIAL INDUCEMENT FOR IT TO ENTER INTO THIS
AGREEMENT. EACH PARTY REPRESENTS AND WARRANTS THAT IT HAS REVIEWED THIS WAIVER
WITH ITS LEGAL COUNSEL AND THAT IT KNOWINGLY AND VOLUNTARILY WAIVES ITS JURY
TRIAL RIGHTS FOLLOWING CONSULTATION WITH LEGAL COUNSEL.

         12. GENERAL PROVISIONS

                  12.1 Successors and Assigns.

                           (a) This Agreement shall bind and inure to the
benefit of the respective successors and permitted assigns of each of the
parties; provided, however, that neither this Agreement nor any rights hereunder
may be assigned by Borrower without Bank's prior written consent, which consent
may be granted or withheld in Bank's sole discretion. Bank shall have the right
without the consent of or notice to Borrower to sell, transfer, negotiate, or
grant participations in

                                       20
   24
all or any part of, or any interest in Bank's obligations, rights and benefits
hereunder, subject to the provisions of this Section 12.1.

                           (b) Bank may sell, negotiate or grant participations
to other financial institutions in all or part of the obligations of the
Borrower outstanding under the Loan Documents, without notice to or the approval
of Borrower; provided that any such sale, negotiation or participation shall be
in compliance with the applicable federal and state securities laws and the
other requirements of this Section 12.1. Notwithstanding the sale, negotiation
or grant of participations, Bank shall remain solely responsible for the
performance of its obligations under this Agreement, and Borrower shall continue
to deal solely and directly with Bank in connection with this Agreement and the
other Loan Documents.

                           (c) The grant of a participation interest shall be on
such terms as Bank determines are appropriate, provided only that (1) the holder
of such a participation interest shall not have any of the rights of Bank under
this Agreement except, if the participation agreement so provides, rights to
demand the payment of costs of the type described in Section 2.6. provided that
the aggregate amount that the Borrower shall be required to pay under Section
2.6 with respect to any ratable share of the Committed Line or any Advance
(including amounts paid to participants) shall not exceed the amount that
Borrower would have had to pay if no participation agreements had been entered
into, and (2) the consent of the holder of such a participation interest shall
not be required for amendments or waivers of provisions of the Loan Agreement
other than those which (i) increase the amount of the Committed Line, (ii)
extend the term of this Agreement, (iii) decrease the rate of interest or the
amount of any fee or any other amount payable to Bank under this Agreement, (iv)
reduce the principal amount payable under this Agreement, or (v) extend the date
fixed for the payment of principal or interest or any other amount payable under
this Agreement.

                           (d) Bank may assign, from time to time, all or any
portion of the Committed Line to an Affiliate of Bank or to The Federal Reserve
Bank or, subject to the prior written approval of Borrower (which approval will
not be unreasonably withheld), to any other financial institution; provided,
that (i) the amount of the Committed Line being assigned pursuant to each such
assignment shall in no event be less than $400,000 and shall be an integral
multiple of $200,000 and (ii) the parties to each such assignment shall execute
and deliver to Borrower an assignment agreement in a form reasonably acceptable
to each. Upon such execution and delivery, from and after the effective date
specified in such assignment agreement (x) the assignee thereunder shall be a
party hereto and, to the extent that rights and obligations hereunder have been
assigned to it pursuant to such assignment agreement, have the rights and
obligations of a Bank hereunder and (y) Bank shall, to the extent that rights
and obligations hereunder have been assigned by it pursuant to such assignment
agreement, relinquish its rights and be released from its obligations under this
Agreement (other than pursuant to this Section 12.1(d)), and, in the case of an
assignment agreement covering all or the remaining portion of Bank's rights and
obligations under this Agreement, Bank shall cease to be a party hereto. In the
event of an assignment hereunder, the parties agree to amend this Agreement to
the extent necessary to reflect the mechanical changes which are necessary to
document such assignment. Each party shall bear its own expenses (including
without limitation attorneys' fees and costs) with respect to such an amendment.

                  12.2 Indemnification. Borrower shall defend, indemnify and
hold harmless Bank and its officers, employees, and agents against: (a) all
obligations, demands, claims, and liabilities claimed or asserted by any other
party in connection with the transactions contemplated by this Agreement; and
(b) all losses or Bank Expenses in any way suffered, incurred, or paid by Bank
as a result of or in any way arising out of, following, or consequential from or
to transactions between Bank and Borrower whether under this Agreement, or
otherwise (including without limitation reasonable attorneys fees and expenses),
except for losses caused by Bank's gross negligence or willful misconduct.

                                       21
   25
                  12.3 Time of Essence. Time is of the essence for the
performance of all obligations set forth in this Agreement.

                  12.4 Severability of Provisions. Each provision of this
Agreement shall be severable from every other provision of this Agreement for
the purpose of determining the legal enforceability of any specific provision.

                  12.5 Amendments in Writing, Integration. This Agreement cannot
be amended or terminated orally. All prior agreements, understandings,
representations, warranties, and negotiations between the parties hereto with
respect to the subject matter of this Agreement, if any, are merged into this
Agreement and the Loan Documents. Notwithstanding the foregoing, all Financing
Statements executed by the Borrower for the benefit of Bank and filed with the
California Secretary of State shall remain in full force and effect.

                  12.6 Counterparts. This Agreement may be executed in any
number of counterparts and by different parties on separate counterparts, each
of which, when executed and delivered, shall be deemed to be an original, and
all of which, when taken together, shall constitute but one and the same
Agreement.

                  12.7 Survival. All covenants, representations and warranties
made in this Agreement shall continue in full force and effect so long as any
Obligations (excluding Obligations under Section 2.6 and 12.2 to the extent they
remain inchoate at the time the outstanding payment Obligations are paid in
full) remain outstanding. The obligations of Borrower to indemnify Bank with
respect to the expenses, damages, losses, costs and liabilities described in
Section 12.2 shall survive until all applicable statute of limitations periods
with respect to actions that may be brought against Bank have run, provided that
so long as the obligations set forth in the first sentence of this Section 12.7
have been satisfied, and Bank has no commitment to make any Advances or to make
any other loans to Borrower, Bank shall release all security interests granted
hereunder and redeliver all Collateral held by it in accordance with applicable
law.

                  12.8 Confidentiality. In handling any confidential information
Bank shall exercise the same degree of care that it exercises with respect to
its own proprietary information of the same types to maintain the
confidentiality of any non-public information thereby received or received
pursuant to this Agreement except that disclosure of such information may be
made (i) to the subsidiaries or affiliates of Bank in connection with their
present or prospective business relations with Borrower, (ii) to prospective
transferees or purchasers of any interest in the Loans, provided that they have
entered into a comparable confidentiality agreement in favor of Borrower and
have delivered a copy to Borrower, (iii) as required by law, regulations, rule
or order, subpoena, judicial order or similar order (iv) as may be required in
connection with the examination, audit or similar investigation of Bank and (v)
as Bank may deem appropriate in the exercise of its remedies under this
Agreement. Confidential information hereunder shall not include information that
either: (a) is in the public domain or in the knowledge or possession of Bank
when disclosed to Bank, or becomes part of the public domain after disclosure to
Bank through no fault of Bank; or (b) is disclosed to Bank by a third party,
provided Bank does not have actual knowledge that such third party is prohibited
from disclosing such information. Notwithstanding any provision of this
Agreement to the contrary, neither Borrower nor any of its Subsidiaries will be
required to disclose, permit the inspection, examination, copying or making
extracts of, or discussions of: any document, information or other matter (i)
prior to the occurrence of an Event of Default that constitutes non-financial
trade secrets or non-financial proprietary information (provided that the terms
of agreements that generate Accounts shall not be deemed to be "non-financial
trade secrets or non-financial proprietary information"), or (ii) in respect to
which disclosure to Bank (or designated representative) is then prohibited by
(a) law, or (b) an agreement binding upon Borrower or any Subsidiary that was
not entered into by Borrower or such Subsidiary for the primary purpose of
concealing information from Bank.

                                       22
   26
         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the date first above written.

                                            FAFCO, INC.



                                            By: /s/ Alex N. Watt
                                               --------------------------------
                                            Title: Vice President- Finance
                                                  -----------------------------

                                            SILICON VALLEY BANK



                                            By: /s/Julie Schneider
                                               --------------------------------
                                            Title: AVB
                                                  -----------------------------


TO BE ATTACHED TO AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT DATED JUNE 5,
1996 BETWEEN FAFCO, INC. AND SILICON VALLEY BANK.

                                       23
   27
                                    EXHIBIT A

         The Collateral shall consist of all right, title and interest of
Borrower in and to the following:

         (a) All goods and equipment now owned or hereafter acquired, including,
without limitation, all machinery, fixtures, vehicles (including motor vehicles
and trailers), and any interest in any of the foregoing, and all attachments,
accessories, accessions, replacements, substitutions, additions, and
improvements to any of the foregoing, wherever located;

         (b) All inventory, now owned or hereafter acquired, including, without
limitation, all merchandise, raw materials, parts, supplies, packing and
shipping materials, work in process and finished products including such
inventory as is temporarily out of Borrower's custody or possession or in
transit and including any returns upon any accounts or other proceeds, including
insurance proceeds, resulting from the sale or disposition of any of the
foregoing and any documents of title representing any of the above, and
Borrower's Books relating to any of the foregoing;

         (c) All contract rights and general intangibles now owned or hereafter
acquired, including, without limitation, goodwill, trademarks, servicemarks,
trade styles, trade names, patents, patent applications, leases, license
agreements, franchise agreements, blueprints, drawings, purchase orders,
customer lists, route lists, infringements, claims, computer programs, computer
discs, computer tapes, literature, reports, catalogs, design rights, income tax
refunds, payments of insurance and rights to payment of any kind;

         (d) All now existing and hereafter arising accounts, contract rights,
royalties, license rights and all other forms of obligations owing to Borrower
arising out of the sale or lease of goods, the licensing of technology or the
rendering of services by Borrower, whether or not earned by performance, and any
and all credit insurance, guaranties, and other security therefor, as well as
all merchandise returned to or reclaimed by Borrower and Borrower's Books
relating to any of the foregoing;

         (e) All documents, cash, deposit accounts, securities, letters of
credit, certificates of deposit, instruments and chattel paper now owned or
hereafter acquired and Borrower's Books relating to the foregoing;

         (f) All copyright rights, copyright applications, copyright
registrations and like protections in each work of authorship and derivative
work thereof, whether published or unpublished, now owned or hereafter acquired;
all trade secret rights, including all rights to unpatented inventions,
know-how, operating manuals, license rights and agreements and confidential
information, now owned or hereafter acquired; all mask work or similar rights
available for the protection of semiconductor chips, now owned or hereafter
acquired; all claims for damages by way of any past, present and future
infringement of any of the foregoing; and

         (g) Any and all claims, rights and interests in any of the above and
all substitutions for, -additions and accessions to and proceeds thereof.

                                       24
   28
                                    EXHIBIT B

                   LOAN PAYMENT/ADVANCE TELEPHONE REQUEST FORM

              DEADLINE FOR SAME DAY PROCESSING IS 3:00 P.M., P.S.T.

TO: CENTRAL CLIENT SERVICE DIVISION               DATE:  ----------------------

FAX#: (408) 496-2426                              TIME:  ----------------------

FROM:                               FAFCO, Inc.
     --------------------------------------------------------------------------
                             CLIENT NAME (BORROWER)
REQUESTED BY:
             ------------------------------------------------------------------
                            AUTHORIZED SIGNER'S NAME

AUTHORIZED SIGNATURE:
                     ----------------------------------------------------------
PHONE NUMBER:
             ------------------------------------------------------------------
FROM ACCOUNT #                            TO ACCOUNT #
              --------------------------               ------------------------
REQUESTED TRANSACTION TYPE                      REQUEST DOLLAR AMOUNT
- --------------------------                      ---------------------
PRINCIPAL INCREASE (ADVANCE)              $
                                           ------------------------------------
PRINCIPAL PAYMENT (ONLY)                  $
                                           ------------------------------------
INTEREST PAYMENT (ONLY)                   $
                                           ------------------------------------
PRINCIPAL AND INTEREST (PAYMENT)          $
                                           ------------------------------------
OTHER INSTRUCTIONS:
                   ------------------------------------------------------------

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

         All representations and warranties of Borrower stated in the Loan
Agreement are true, correct and complete in all material respects as of the date
of the telephone request for and Advance confirmed by this Borrowing
Certificate; provided, however, that those representations and warranties
expressly referring to another date shall be true, correct and complete in all
material respects as of such date.

                                  BANK USE ONLY

TELEPHONE REQUEST:
- ------------------

The following person is authorized to request the loan payment transfer/loan on
the advance designated account and is known to me.

- --------------------------------------          -------------------------------
         Authorized Requester                              Phone #

- --------------------------------------          -------------------------------
         Received by (Bank)                                Phone #

          ---------------------------------------------------------
                           Authorized Signature (Bank)

                                       25
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[CAPTION]
                                    EXHIBIT C
                           BORROWING BASE CERTIFICATE
- -------------------------------------------------------------------------------
Borrower: FAFCO, INC.                               Lender: Silicon Valley Bank

Commitment Amount: $1,000,000
- -------------------------------------------------------------------------------

                                                                      
ACCOUNTS RECEIVABLE
      1.   Accounts Receivable Book Value as of                          $____________
      2.   Additions (please explain on reverse)                         $____________
      3.   TOTAL ACCOUNTS RECEIVABLE                                     $____________

ACCOUNTS RECEIVABLE DEDUCTIONS (without duplication)
      4.   Amounts over 90 days due (Distributors over 60)   $_________
      5.   Balance of 50% over 90 day accounts               $_________
      6.   Concentration Limits                              $_________
      7.   Foreign Accounts                                  $_________
      8.   Governmental Accounts                             $_________
      9.   Contra Accounts                                   $_________
      10.  Promotion or Demo Accounts                        $_________
      11.  Intercompany/Employee Accounts                    $_________
      12.  Other (please explain on reverse)                 $_________
      13.  TOTAL ACCOUNTS RECEIVABLE DEDUCTIONS              $_________
      14.  Eligible Accounts (#3 minus #13)                              $____________
      15.  LOAN VALUE OF ACCOUNT'S (75% of #14)                          $____________

BALANCES
      16.  Maximum Loan Amount                                           $1,000,000
      17.  Total Funds Available (Lesser of #16 or #15)      $_________
      18.  Present balance owing on Line of Credit                       $____________
      19.  RESERVE POSITION (#17 minus #18)                              $____________


The undersigned represents and warrants that the foregoing is true, complete and
correct, and that the information reflected in this Borrowing Base Certificate
complies with the representations and warranties set forth in the Loan and
Security Agreement between the undersigned and Silicon Valley Bank.

COMMENTS:


FAFCO, INC.


By:______________________________________
       Authorized Signer

                                       26
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                                    EXHIBIT D
                             COMPLIANCE CERTIFICATE

TO:      SILICON VALLEY BANK

FROM:    FAFCO, INC.

         The undersigned authorized officer of FAFCO, Inc., a California
corporation, hereby certifies that in accordance with the terms and conditions
of the Loan and Security Agreement between Borrower and Bank (the "Agreement"),
(i) Borrower is in complete compliance for the period ending ___________with all
required covenants except as noted below and (ii) all representations and
warranties of Borrower stated in the Agreement are true and correct in all
material respects as of the date hereof. Attached herewith are the required
documents supporting the above certification. The Officer further certifies that
these are prepared in accordance with Generally Accepted Accounting Principles
(GAAP) and are consistently applied from one period to the next except as
explained in an accompanying letter or footnotes.

 PLEASE INDICATE COMPLIANCE STATUS BY CIRCLING YES/NO UNDER "COMPLIES" COLUMN.



REPORTING COVENANT                               REQUIRED                                                   COMPLIES
- ------------------                               --------                                                   --------
                                                                                                       
Monthly financial statements                     Monthly within 30 days                                 Yes         No
Annual (CPA Audited)                             FYE within 90 days                                     Yes         No
A/R & A/P Agings                                 Monthly within 20 days                                 Yes         No
A/R Audit                                        Initial and Semi-Annual                                Yes         No

FINANCIAL COVENANT                               REQUIRED                         ACTUAL                    COMPLIES
- ------------------                               --------                         ------                    --------
Maintain on a Monthly Basis:
   Minimum Quick Ratio                           0.50:1.00                        _____:1:00            Yes         No
   Minimum Tangible Net Worth                    $1,050,000                       $____                 Yes         No
                                                 plus 100% net equity
                                                 from subordinated debt
   Maximum Debt/Tangible Net Worth               2.75:1.00                        _____:1:00            Yes         No
Maintain on a Quarterly Basis:
   Profitability*                                $1.00                            $____                 Yes         No


*    Measured on a year to date basis. Tested for second, third and fourth
     quarters only.

COMMENTS REGARDING EXCEPTIONS:  See Attached.

Sincerely.

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