Document:

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                                                                     EXHIBIT 4.7

                                                                (WARRANT HOLDER)

                                WARRANT AGREEMENT
                  BETWEEN CONVERTIBLE SUBORDINATED NOTE HOLDER
                                       AND
                              NEMATRON CORPORATION

<PAGE>   2

         THIS STOCK PURCHASE WARRANT HAS NOT BEEN REGISTERED UNDER THE
         SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES
         LAWS. IT MAY NOT BE OFFERED, SOLD OR TRANSFERRED IN THE
         ABSENCE OF REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS
         AMENDED, AND ANY APPLICABLE STATE SECURITIES LAWS OR AN
         OPINION OF COUNSEL SATISFACTORY TO THE COMPANY THAT SUCH
         REGISTRATION IS NOT REQUIRED. THIS WARRANT IS ALSO SUBJECT TO
         THE RESTRICTIONS ON TRANSFER SET FORTH IN SECTION 6 HEREOF.

                           WARRANT TO PURCHASE SHARES
                        OF COMMON STOCK, NO PAR VALUE, OF
                              NEMATRON CORPORATION

March   , 2001

         THIS STOCK PURCHASE WARRANT ("Warrant") CERTIFIES THAT, for value
received, subject to the provisions hereinafter set forth, __________ (THE
"HOLDER") is entitled to purchase from Nematron Corporation, a Michigan
corporation, and its successors and assigns (the "Company") up to ______________
SHARES (the "Warrant Shares") of common stock of the Company, no par value (the
"Common Stock"), at the price of $0.30 per share (the "Per Share Warrant Price")
at any time and from time to time after the date hereof and until March 31, 2006
(the "Expiration Date") subject to the provisions and adjustments and on the
terms and conditions hereinafter set forth. The Per Share Warrant Price, when
multiplied by the number of shares purchasable hereunder shall be referred to as
the "Aggregate Warrant Price." The number of shares purchasable hereunder and
the Per Share Warrant Price are subject to adjustment, as hereinafter provided.
The Company has issued this Warrant in connection with its issuance to the
Holder of a Convertible Subordinated Promissory Note on the date of this
Warrant.

         The following is a statement of the rights of the Holder of this
Warrant and the terms and conditions to which this Warrant is subject, to which
terms the Holder hereof, by acceptance of this Warrant, assents.

1.  EXERCISE OF WARRANT

         (a) Subject to the conditions set forth herein, this Warrant may be
exercised in whole at any time or in part from time to time by the Holder hereof
by the surrender of this Warrant at the principal office of the Company on or
before the Expiration Date and upon payment to the Company of the Aggregate
Warrant Price (or the proportionate part thereof if exercised in part) for the
shares so purchased. Such payment shall be made by the Holder in the form of a
certified or cashier's check. If this Warrant is exercised with respect to less
than all of the Warrant Shares at the time purchasable hereunder, the Holder
hereof shall be entitled to receive a new Warrant covering the number of shares
in respect of which this Warrant shall not have been exercised.

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     (b) The Company shall keep a warrant registry book of the names of all the
     holders of its registered warrants (including the Holder) and their
     registered assigns.

2.  ADJUSTMENTS

         (a) If at any time prior to the exercise of the Warrant, the daily
closing price for the Company's Common Stock is less than $0.30 per share for
five consecutive trading days (provided, however, that the Common Stock is
traded on such trading day, the Per Share Warrant Price shall be the lowest such
price during such period. The Company currently intends to issue equity
securities in a private offering (the "Proposed Equity Offering") on or before
August 31, 2001 on terms and conditions to be determined at the time of such
offering (the "Proposed Shares"). In the event the Company completes the
Proposed Equity Offering prior to the exercise of this Warrant, the Holder may
exchange this Warrant for a warrant to purchase that number of Proposed Shares
equal to the Aggregate Warrant Price divided by the per Proposed Share price set
forth in the Proposed Equity Offering. The exercise price of the new warrant
shall be the per Proposed Share price set forth in the Proposed Equity Offering.

         (b) In the event the Company shall (i) pay a dividend to the holders of
Common Stock in shares of Common Stock, (ii) subdivide its outstanding shares of
Common Stock into a greater number of shares, (iii) combine its outstanding
shares of Common Stock into a smaller number of shares, then (A) the number of
Warrant Shares shall be adjusted so that the Holder shall thereafter be entitled
to receive upon the exercise of this Warrant the number of shares of Common
Stock which he would have owned immediately after such event had the Warrant
been exercised immediately prior to the occurrence of such event and (B) the Per
Share Warrant Price shall be adjusted to that price determined by multiplying
the Per Share Warrant Price in effect immediately prior to such event by a
fraction (x) the numerator of which is the total number of outstanding shares of
Common Stock immediately prior to such event, and (y) the denominator of which
shall be the total number of outstanding shares of Common Stock immediately
after such event. Such adjustment shall become effective immediately after the
opening of business on the day following such record date or the day upon which
such subdivision, combination or reclassification becomes effective.

         (c) In the event the Company shall (i) issue by reclassification of its
Common Stock any shares of the Company of any class or series, (ii) merge or
consolidate with or into another entity (other than a merger in which the
Company is the surviving entity and which does not result in any
reclassification of the outstanding shares of Common Stock), (iii) sell or
otherwise convey to another entity all or substantially all of the assets of the
Company followed by the distribution of the proceeds thereof to the shareholders
of the Company, or (iv) engage in a share exchange involving all or
substantially all of the stock of the Company, then the Holder shall thereafter
be entitled to receive upon the exercise of this Warrant, instead of the Warrant
Shares, the consideration which he would have owned immediately after such event
had the Warrant been exercised immediately prior to the occurrence of such
event.

         (d) No adjustment shall be required unless such adjustment would
require an increase or decrease of at least one-tenth of a share in the number
of Warrant Shares or at

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least one-tenth of a cent in the Per Share Warrant Price; provided, however,
that any adjustment which by reason hereof is not required to be made shall be
carried forward and taken into account in any subsequent adjustment.

         (e) No fractional shares of Common Stock shall be issued upon exercise
of this Warrant. The number of shares issued shall instead be rounded down to
the nearest whole share and any fractional share disregarded.

         (f) The Company shall not, by amendment of its Articles of
Incorporation or through any reorganization, recapitalization, transfer of
assets, consolidation, merger, dissolution, issue or sale of securities or any
other voluntary action, avoid or seek to avoid the observance or performance of
any of the terms to be observed or performed hereunder by the Company, but will
at all times in good faith assist in the carrying out of all of the provisions
of this Section 3 and in the taking of all such action as may be necessary or
appropriate in order to protect the rights of the Holder against impairment.

         (g) Whenever the Per Share Warrant Price or the number of Warrant
Shares shall be adjusted pursuant to the provisions hereof, the Company shall
within 30 days of such adjustment deliver a certificate signed by its chief
financial officer to the registered holder hereof setting forth, in reasonable
detail, the event requiring the adjustment, the amount of the adjustment, the
method by which such adjustment was calculated, and the Per Share Warrant Price
after giving effect to such adjustment.

3.  FULLY PAID STOCK

         The Company agrees that the Warrant Shares delivered upon exercise of
this Warrant as herein provided shall, at the time of such delivery, be fully
paid and non-assessable, and free from all liens and charges with respect to the
purchase thereof. During the period within which this Warrant may be exercised,
the Company will at all times have authorized, and hold in reserve for issuance
upon exercise of this Warrant, a sufficient number of shares of Common Stock to
provide for the exercise of this Warrant.

4.  CLOSING OF TRANSFER BOOKS

         The right to exercise this Warrant shall not be suspended during any
period while the stock transfer books of the Company for its Common Stock may be
closed. The Company shall not be required, however, to deliver certificates of
its Common Stock upon the exercise of this Warrant while such books are duly
closed for any purpose, but the Company may postpone the delivery of the
certificates for such Common Stock until the opening of such books, and they
shall, in such case, be delivered forthwith upon the opening thereof, or as soon
as practicable thereafter.

5.  LOST OR STOLEN WARRANTS

         In case any Warrant shall be mutilated, lost, stolen or destroyed, the
Company shall issue a new Warrant of like date, tenor, and denomination and
deliver the same in exchange and substitution for and upon surrender and
cancellation of any mutilated Warrant, or in lieu of any Warrant lost, stolen or
destroyed, upon an indemnity agreement or bond reasonably satisfactory to the
Company.

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6.  ASSIGNMENT

         This Warrant is not assignable or transferable except by will or the
laws of descent and distribution and any such attempted assignment or transfer
shall be null and void. The Company may deem and treat the registered holder
hereof as the absolute owner of this Warrant (notwithstanding any notations of
ownership or writing hereon made by anyone other than the Company) for all
purposes and shall not be affected by any notice to the contrary.

7.  SECURITIES MATTERS

         Neither this Warrant nor the Warrant Shares have been registered under
the Securities Act of 1933 (the "Act"), as amended, or any applicable "Blue Sky"
laws. By acceptance of this Warrant, the Holder represents and warrants to the
Company that Holder (a) is receiving this Warrant and, upon exercise, is
acquiring the Warrant Shares for Holder's own account and not on behalf of
others, and is not taking this Warrant or any of the Warrant Shares with a view
to the "distribution" thereof (as that term is defined in the Act and the rules
and regulations of the Securities and Exchange Commission thereunder) and (b)
will not offer, distribute, sell, transfer or otherwise dispose of this Warrant
or the Warrant Shares except pursuant to (i) an effective registration statement
under the Act and any applicable Blue Sky laws with respect thereto, or (ii) an
opinion, satisfactory to the Company, addressed to the Company, of counsel
satisfactory to the Company, that such offering, distribution, sale, transfer or
disposition is exempt from registration under the Act and any applicable Blue
Sky laws. Each and every certificate representing Warrant Shares to be delivered
upon exercise of this Warrant shall bear the following legend:

         THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
         SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS. SUCH
         SECURITIES MAY NOT BE OFFERED, SOLD OR TRANSFERRED IN THE ABSENCE OF
         REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND ANY
         APPLICABLE STATE SECURITIES LAWS OR AN OPINION OF COUNSEL SATISFACTORY
         TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED.

8.  NO RIGHTS AS SHAREHOLDER

         Nothing contained in this Warrant shall be construed as conferring upon
the Holder any rights as a shareholder of the Company.

9.  MISCELLANEOUS

         (a) All covenants and agreements of the Company in this Warrant shall
be binding upon the Company's successors and assigns.

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         (b) This Warrant shall be construed and enforced in accordance with the
laws of the State of Michigan.

         (c) This Warrant may be amended, except as provided in Section 2, only
with the written consent of the Company and the Holder.

         (d) Any notices or other communications required or permitted hereunder
shall be sufficiently given if in writing and sent by registered mail, postage
prepaid, and if to the Holder, addressed to the Holder at the Holder's address
appearing on the warrant registry book of the Company, and if to the Company,
addressed to it at 5840 Interface Drive, Ann Arbor, Michigan 48103, Attention:
President, or to such other address or attention as shall be furnished in
writing by the Company or the Holder, and any such notice shall be deemed to
have been given as of the date received.

         (e) The Company will pay when due and payable any and all federal and
state taxes which may be payable by the Company in respect of the issue of this
Warrant, or any Common Stock or certificates therefor upon the exercise of this
Warrant, pursuant to the provisions thereof. The Company shall not, however, be
required to pay any tax which may be payable in respect of any attempted
transfer, in whole or in part, of this Warrant (including the issuance of new
Warrants in connection therewith) or the delivery of stock certificates in a
name other than that of the Holder presented for exercise, and any such tax
shall be paid by the Holder at the time of presentation.

         IN WITNESS WHEREOF, the undersigned has caused this Warrant to be
signed by a duly authorized officer and this Warrant to be dated the date set
forth above.

NEMATRON CORPORATION                       ACCEPTED AND AGREED:

By:                                                     [Holder]
   ---------------------------             -------------------------------------
   DAVID P. GIENAPP, SECRETARY
                                           By:
                                              ----------------------------------
                                              [Signature]

                                           Name:
                                                --------------------------------

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

Schedule of Warrant holders and Amount of Warrants

<TABLE>
<CAPTION>
Date              Name                                  Amount
<S>               <C>                                 <C>

03-21-01          Ralph E. Miesel                      200,000
03-23-02          North Coast Technology
                  Investors LP                         500,000
03-29-01          The Stag Group                        33,333
04-09-01          James A. Nichols                      66,667
                                                      --------
                                                       800,000
                                                      ========
</TABLE><PAGE>   1

                                                                     EXHIBIT 4.8

As of July 9, 1999 (the "Replacement Date"), this Revolving Credit and Security
Agreement supersedes and replaces in its entirety that certain Revolving Credit
and Security Agreement executed by Borrower and Bank on June 26, 1998 and that
certain Modification Agreement and Amendment to Loan Documents executed by
Borrower and Bank on December 15, 1998 (collectively, the "Former Agreements").
The Former Agreements shall be of no force or effect as of the Replacement Date.

                     REVOLVING CREDIT AND SECURITY AGREEMENT

         This Revolving Credit and Security Agreement (the "Agreement") is
executed and delivered this 9th day of July, 1999 by and between OPTIMATION,
INC., an Alabama corporation ("Borrower"), with its chief executive office and
its principal place of business at 2225 Drake Avenue, Huntsville, AL 35805, and
COMPASS BANK, an Alabama banking corporation ("Bank"), with its principal
offices at 114 Governors Drive, Huntsville, Alabama 35801. Borrower has applied
to Bank for a revolving line of credit not to exceed an aggregate principal
amount at any one time outstanding the sum of Six Hundred Fifty Thousand and
No/100 Dollars ($650,000.00) to be evidenced by a Revolving Credit Commercial
Note (the "Note") in such amount, and to be secured by a security interest in
all of the Collateral (as defined herein) now owned or hereafter acquired by
Borrower on the terms hereinafter set forth.
         Bank is willing to extend such a revolving line of credit (the
"Revolving Line") to Borrower up to an aggregate amount not in excess of the
amount set forth above upon the security of such Collateral on the terms and
subject to the conditions hereinafter set forth.
         Accordingly, Borrower and Bank in consideration of the premises, the
credit to be extended hereunder, and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, agree as follows:

         SECTION 1.  DEFINITIONS - AS HEREIN USED.
         1.1 "Account" and "Account Receivable" shall include all accounts,
accounts receivable, notes, notes receivable, contracts, contract rights,
drafts, documents, title retention and lien instruments, security agreements,
acceptances, instruments, conditional sales contracts, chattel mortgages,
chattel paper, general intangibles, and other forms of obligation and rights to
payment and receivables whether or not yet earned by performance, including,
without limitation, state and federal tax refunds.
         1.2 "Account Debtor" shall mean the party who is obligated on or under
any Account Receivable or contract right.
         1.3 "Borrower's Loan Account" shall mean the account on the books of
Bank in which Bank will record loans and other advances made by Bank to Borrower
pursuant to this Agreement, payments received on such loans and advances and
other appropriate debits and credits as provided by this Agreement or the Note.
         1.4 "Collateral" shall mean any and all property in which Bank
acquired, now has, by this Agreement or any of the other Loan Documents (as
defined herein) acquires, or hereafter acquires a security interest or other
rights or interests as security for Borrower's Liabilities (as defined herein),
including, without limitation, Borrower's obligations under the Note and any of
the other Loan Documents.

         1.5 An "Eligible Account Receivable" shall mean an Account Receivable
of Borrower which meets each of the following requirements and is otherwise
acceptable to Bank:
    (a) it arises from the sale or lease of goods or from services rendered,
        such goods have been shipped or delivered to the Account Debtor under
        such Account Receivable and such services have been fully performed and
        have been accepted by the Account Debtor, and Borrower's full right to
        payment for all sums due from such Account Debtor with respect to such
        Account Receivable shall have been earned and then be due and payable;
    (b) it is a valid and legally enforceable obligation of the Account Debtor
        thereunder according to its express terms, and is not subject to any
        offset, counter-claim, crossclaim, or other defense on the part of such
        Account Debtor denying liability thereunder in whole or in part;
    (c) it is not subject to any mortgage, lien, security interest, or similar
        adverse rights or interests whatsoever other than the security interests
        granted to
<PAGE>   2

        Bank hereunder;
    (d) it is evidenced by an invoice, dated not later than the date of shipment
        (in the case of goods sold or leased) (other than with respect to an
        Approved Bill and Hold) or the date of performance (in the case of
        services rendered) and having payment terms acceptable to Bank, rendered
        to such Account Debtor, and is not evidenced by an instrument, note,
        draft, title retention and lien instrument, security agreement,
        acceptance, conditional sales contract, chattel mortgage or chattel
        paper;
    (e) it is not owing by an Account Debtor whose obligations with respect to
        which Bank, acting in its discretion, shall have notified Borrower in
        writing are not deemed to constitute an Eligible Account Receivable;
    (f) it is not due from an affiliated or related corporation or entity,
        subsidiary corporation or entity, parent corporation or entity, or any
        stockholder, officer, director, manager or employee of Borrower or of
        any such affiliated, related, subsidiary, or parent corporation or
        entity, or any individual who is a relative of any one or more the
        foregoing by blood or marriage;
    (g) it does not constitute retainages or deferred payments under a contract
        not fully performed;
    (h) it does not constitute, in whole or in part, interest or finance charges
        on outstanding balances;
    (i) it is an Account Receivable with respect to which no return,
        repossession, rejection, cancellation, or repudiation shall have
        occurred or have been threatened;
    (j) it is an Account Receivable with respect to which Borrower continues to
        be in full conformity with the representations, warranties, and
        covenants of Borrower made with respect thereto;
    (k) it is not subject to any sales terms, trial terms, sales-or-return
        terms, consignment terms, guaranteed sales or performance terms, minimum
        sales terms, warranties or representations, C.O.D. terms, cash terms, or
        similar terms or conditions;
    (l) it is not owed by an Account Debtor that is not an individual residing
        in the United States or a corporation or partnership organized and
        validly existing under the laws of a state within the United States
        unless the payment of such Account is supported by a letter of credit in
        form and substance and issued by an issuer acceptable to Bank;
    (m) it is not an Account Receivable subject, in whole or in part, to any
        "bill and hold" or similar arrangement pursuant to which the invoice is
        delivered prior to the actual delivery of the sold or leased goods or
        the performance of the services;
    (n) it is not an Account Receivable with respect to which ninety (90) days
        or more shall have passed since the earlier of (i) the relevant invoice
        date, or (ii) the date that the obligation of the Account Debtor
        thereunder arose and became due and payable;
    (o) it is not owed by any Account Debtor who or which currently has or at
        any time has had account balances with Borrower equalling or exceeding
        ten percent (10%) of its total Accounts with Borrower at such time
        unpaid after ninety (90) days from invoice date; and
    (p) it is not an Account owed by an Account Debtor whose aggregate Account
        balance exceeds twenty-five percent (25%) of the total value of
        Borrower's total Accounts except for PLC Direct, provided however, that
        this provision shall not apply until Bank gives written notice to
        Borrower of its intention to apply this provision to a specific Account
        Debtor).
         1.6 "Eligible Inventory" shall mean Borrower's non-custom raw materials
Inventory held for sale in the normal and ordinary course of Borrower's business
located in Huntsville, Alabama and which meets each of the following
requirements and which is otherwise acceptable to Bank;
    (a) it does not consist of boards, board assemblies, sheetmetal faceplates
        or raw materials that are custom made to fit Borrower's products;
    (b) it is not private label or styled type or otherwise subject to special
        marketing conditions or marketability limitations judged by Bank, in its
        sole discretion, to be unacceptable;
    (c) it is not, supplies, nor work in process, nor does it include any
        shipping or packaging materials;
    (d) it has not remained in inventory more than 365 days;
    (e) it is not materials or supplies used or to be used, or consumed or to be

<PAGE>   3
        consumed in the normal course of business of Borrower;
    (f) it is new and unused;
    (g) it is owned by Borrower and is not subject to any lien or security
        interest whatsoever other than the security interest granted to Bank
        hereunder.
         1.7 "Insolvency" of Borrower or any other person or entity shall mean
that there shall have occurred with respect to Borrower or such other person or
entity one or more of the following events: death, incapacity, dissolution,
termination of existence, liquidation, insolvency, business failure, appointment
of a receiver of any part of the property of, assignment for the benefit of
creditors by or against Borrower or such other person or entity, or institution
of any action or proceeding with respect to Borrower or such other person or
entity under or pursuant to any insolvency laws relating to the relief of
debtors by or against Borrower or such other person or entity, institution of
proceedings in bankruptcy or with respect to the readjustment of indebtedness,
reorganization, composition or extension by or against Borrower or such other
person or entity (including, without limitation, under or pursuant to the United
States Bankruptcy Code, as amended, or under any similar law at any time
enacted), or if any corporate action shall be taken for the purpose of effecting
any of the foregoing.
         1.8 "Inventory" shall mean all of Borrower's (or other entities', as
applicable) inventory (as defined in the Uniform Commercial Code as enacted in
the State of Alabama, or in any other jurisdiction), including, without
limitation, all goods, merchandise and other personal property now owned or
hereafter acquired by Borrower (or other entities, as applicable) which are held
for sale, lease, or rental or are furnished or to be furnished under a contract
of service and all raw materials, work in process, and materials or supplies
used or to be used, or consumed or to be consumed, in Borrower's (or other
entities', as applicable) business, and all goods represented thereby, and all
such goods that may be reclaimed or repossessed from or returned by Borrower's
(or other entities', as applicable) customers wheresoever the same may be
located, and all shipping and packaging materials relating to any of the
foregoing.
         1.9 "Liabilities" shall mean any and all obligations, indebtedness and
liabilities of Borrower to Bank of every kind and description, whether direct or
indirect, absolute or contingent, joint or several, due or to become due,
liquidated or unliquidated, now existing or hereafter arising, and all
extensions, modifications, renewals, and refinancings thereof, regardless of how
such Liabilities arise or by what agreement or instrument (if any) they may be
evidenced and include obligations to perform acts and refrain from taking
actions as well as obligations to pay money. Without limiting the foregoing,
Liabilities shall specifically include all liabilities and obligations of
Borrower hereunder and the obligation to repay the indebtedness evidenced by the
Note executed by Borrower in favor of Bank on the date thereof.
         1.10 "Loan Documents" shall mean and include the Note, this Agreement
and any other agreement, document or instrument now or hereafter evidencing,
securing, guaranteeing (including, without limitation, Continuing Limited
Guaranties executed in connection herewith by Dennis and Sheila Sierk (up to
$150,000.00) and Charles and Kerry Garrett (limited to $25,000.00) (such
individuals and entities are jointly and severally included within the term
"guarantor" as the same is used in this Agreement)) or relating to the Revolving
Line or any other Liability, obligation or indebtedness of Borrower to Bank, as
the same may be amended.
         1.11 "Proceeds" shall mean all forms of payment received by or due to
Borrower, et al. from the collection of Accounts Receivable or sale or exchange
of Inventory or other property constituting Collateral hereunder and any and all
claims against any third party for loss of or damage to any Collateral,
including insurance, contract and tort claims, and further, without limiting the
generality of the foregoing, Proceeds shall include all Accounts, checks, cash,
money orders, drafts, chattel paper, instruments, notes and other documents
evidencing payment obligations to Borrower for the sale, lease, rental or
exchange of Collateral.
         1.12 "Net Worth" and "Current Maturities of Long Term Debt" shall be
defined and calculated in accordance with generally accepted accounting
principles consistently applied as of the date hereof.
         1.13 "Tangible Net Worth" shall mean Borrower's Net Worth less (i) any
and all loans and other advances to affiliates, subsidiaries, owners, parent,
employees, officers, stockholders, directors or other related entities; (ii)
notes, notes receivable, accounts, accounts receivable, inter-company
receivables, and other amounts owing from affiliates, subsidiaries, owners,
parent, employees, officers,

<PAGE>   4
stockholders, directors or other related entities; and (iii) any and all
intangibles plus subordinated debt.
         1.14 "Total Debt" shall mean all of Borrower's indebtedness and
liabilities owing to Bank or any other person or entity, whether now or
hereafter existing, created or arising, absolute or contingent, direct or
indirect, joint or several, including without limitation, the Liabilities.
         1.15 "Total Debt to Tangible Net Worth Ratio" shall be defined as the
ratio of Borrower's Total Liabilities to Borrower's Tangible Net Worth.
         1.16 Any terms used to describe Bank's security interest hereunder not
specifically defined herein shall have the meanings and definitions given those
terms under the Uniform Commercial Code of Alabama as in effect on the date
hereof.

         SECTION 2. BORROWER'S REPRESENTATIONS AND WARRANTIES; CERTAIN
                    COVENANTS.
         To induce Bank to enter into this Agreement, Borrower represents,
warrants and covenants as follows:
         2.1 Borrower (a) is a duly organized corporation, validly existing
under the laws of the State of Alabama; (b) has all necessary licenses and
corporate power and authority to own its assets and conduct its business as now
conducted or presently proposed to be conducted; (c) has no subsidiaries; and
(d) is duly qualified and in good standing (and will remain so qualified and in
good standing) in every jurisdiction in which it is or shall be doing business
or in which the failure so to qualify and remain in good standing would or could
have an adverse effect on its business or properties or Bank.
         2.2 The execution, delivery, and performance hereof are within
Borrower's corporate powers, have been duly and validly authorized and are not
in contravention of the law or the terms of Borrower's charter, by-laws, or
other incorporation papers, or of any indenture, agreement, or undertaking or
any law, regulation or order to which Borrower is a party or by which it or any
of its properties is or may be bound. Upon execution and delivery hereof, this
Agreement will be a valid and binding obligation of Borrower enforceable in
accordance with its terms.
         2.3 Except for the security interests granted to Bank hereby or by any
of the other Loan Documents in favor of Bank, Borrower is and, as to Accounts
Receivable, Inventory and other Collateral arising or to be acquired after the
date hereof, shall be the sole and exclusive owner of the Accounts, the
Inventory, and each and every other item of Collateral free from any lien,
claim, charge, security interest, mortgage, secondary financing or encumbrance,
and Borrower shall defend the Accounts, the Inventory, and each and every other
item of Collateral and all Proceeds and products thereof against all claims and
demands of all persons at any time claiming the same or any interest therein
adverse to the interests of Bank.
         2.4 Borrower will promptly pay all taxes or charges levied on or with
respect to, and will at all times keep the Accounts, the Inventory, and each and
every other item of Collateral, free and clear of all liens, claims, charges,
security interests, mortgages, secondary financing and encumbrances whatsoever,
other than the security interests granted to Bank hereby or by any of the other
Loan Documents. Borrower agrees to take all actions that Bank may request to
establish and maintain a valid title and security interest in the Accounts, the
Inventory, and each and every other item of Collateral, free and clear of all
other liens, claims, charges, security interests, mortgages, secondary financing
and encumbrances whatsoever. If such taxes or other assessments remain unpaid
after the date fixed for the payment of same, or if any lien, claim, charge,
security interest, mortgage, secondary financing or encumbrance shall arise, or
be claimed or asserted with respect to the Accounts, the Inventory, or any other
item of Collateral, Bank may, without notice to Borrower, pay such taxes,
assessments, charges or claims, or take any and all other actions (including the
payment of money) deemed desirable by Bank to remove any such lien, claim,
charge, security interest, mortgages, secondary financing or encumbrance, and
Borrower agrees that the amounts thereof, along with any amounts necessary to
perfect and note Bank's interest in any Collateral, shall be charged to
Borrower's Loan Account created hereby and shall bear interest at the rate of
interest borne by Borrower's obligations under the Note.
         2.5 Borrower will not (and will not allow or suffer to occur any other
person or entity to) sell (except for the sale of Inventory in the normal and
ordinary course of Borrower's business), transfer, lease, convey or otherwise
dispose of the Collateral, any portion thereof, or any interest therein (or any
of the Proceeds thereof, whether money, checks, money orders, drafts, notes,
instruments, documents,

<PAGE>   5

chattel paper, Accounts, returns or repossessions), without Bank's prior written
consent.
         2.6 Borrower will deliver to Bank, so long as any of the Liabilities
shall remain outstanding, the following:
         (a)  on or before the fifteenth (15th) day of each calendar month,
              detailed reports in form acceptable to Bank of all Accounts
              Receivable as of the last day of the immediately preceding
              calendar month, and the period of time which has elapsed with
              respect to such Accounts Receivable since the invoice date with
              respect thereto;
         (b)  on or before the fifteenth (15th) day of each calendar month,
              summaries of all Inventory (segregating such Inventory as to raw
              materials, work-in-process, supplies, and finished goods) as of
              the last day of the immediately preceding calendar month,
              including the period of time such has been held in Inventory by
              Borrower, and the value thereof;
         (c)  such other documents, instruments, data or information of any type
              requested by Bank with respect to the Accounts Receivable,
              Inventory and any other collateral.
         2.7 At the time any Account becomes subject to a security interest in
favor of Bank, said Account shall be a good and valid Account representing an
undisputed, bona fide indebtedness incurred by the Account Debtor named therein,
for merchandise held subject to delivery instructions or theretofore shipped or
delivered pursuant to a contract of sale, or for services theretofore performed
by Borrower with or for said Account Debtor; there shall be no set-offs,
counterclaims, or disputes against any such Account except as indicated in some
written list, statement or invoice furnished to Bank with reference thereto; and
Borrower shall be the lawful owner of all such Accounts and shall have good
right to subject the same to a security interest in favor of Bank. No such
Account shall be sold, assigned, or transferred to any person other than Bank or
in any way encumbered except to Bank, and Borrower shall defend the same against
the lawful claims and demands of all persons other than Bank. If any Account
shall be in violation of any one or more of the warranties expressed in this
section, it shall not be deemed an Account Receivable for purposes of this
Agreement.
         2.8 At the time Borrower pledges, sells, assigns or transfers to Bank
any instrument, document of title, security, chattel paper or other property, or
any interest therein, Borrower shall be the lawful owner thereof and shall have
good right to pledge, sell, assign or transfer the same; none of such property
shall have been pledged, sold, assigned or transferred to any person other than
Bank or in any way encumbered, and Borrower shall defend the same against the
lawful claims and demands of all persons other than Bank.
         2.9 Borrower shall give Bank written notice of each location at which
Inventory and other tangible Collateral are or will be kept, whether for
storage, like purposes or otherwise. Except as such notice is given, all
Inventory and other tangible Collateral are and shall be kept at Borrower's
principal place of business as noted on the first page of this Agreement.
         2.10 Borrower shall give Bank written notice of each office of Borrower
at which records of Borrower pertaining to Accounts Receivable, general
intangibles and contract rights are kept. Except as such notice is given, all
records of Borrower pertaining to Accounts Receivable, general intangibles and
contract rights are and shall be kept at Borrower's chief executive office as
noted on the first page of this Agreement.
         2.11 Subject to any limitations stated therein or in connection
therewith, all balance sheets, earnings statements and other financial data
which have been or may hereafter be furnished to Bank to induce it to enter into
this Agreement, or otherwise furnished in connection herewith, do or shall
fairly represent the financial condition of Borrower (or other person or entity,
as applicable) as of the dates and results of operations for the periods for
which the same are furnished in accordance with generally accepted accounting
principles consistently applied, and all other information, reports and other
papers and data furnished to Bank shall be accurate, as of the relevant date,
and correct in all material respects and complete insofar as completeness may be
necessary to give Bank a true and accurate knowledge of the subject matter.
         2.12 With respect to any and all equipment which may now or hereafter
constitute Collateral hereunder, Borrower shall maintain possession of same,
keep the same in good repair, and maintain casualty insurance on the same naming
Bank as loss

<PAGE>   6

payee under a New York Standard (long-form) loss payable endorsement.
         2.13 Borrower's name is and has always been as set forth on the first
page of this Agreement, except as otherwise disclosed in writing to Bank.
Borrower will promptly advise Bank in writing of any change in Borrower's name.
         2.14 On or prior to September 30, 1999 (the "Compliance Date"),
Borrower shall have taken all actions necessary to ensure that the automated
systems used by Borrower that are material to its operations (collectively,
"Mission-Critical Systems"), including, without limitation, software, hardware
and other data processing devices, shall not fail, malfunction or produce
incorrect results with respect to date, calculations and other processing
involving date before, as of or after December 31, 1999, regardless of the form
the date data is received or processed (collectively, "Year 2000 Compliant" or
"Year 2000 Compliance"). Without limiting the generality of the foregoing, on or
prior to the Compliance Date, Borrower shall test and certify that its
Mission-Critical Systems are Year 2000 Compliant in accordance with commercially
reasonable practices and industry standards. Borrower agrees that upon the
reasonable request of the Bank, Borrower will make its employees, consultants,
premises, records and documentation available to Lender with respect to
Borrower's Year 2000 Compliance efforts. Nothing in this Section 2 shall be
deemed to extend the availability of the Revolving Line beyond the time noted in
Section 14 hereof.

         SECTION 3.  BANK'S AGREEMENT TO MAKE ADVANCES.
         3.1 From the date hereof until June 1, 2000, or such future date to
which the expiration date of the Revolving Line may be extended, subject to the
terms and conditions of this Agreement and Borrower's and all guarantor's
performance of and compliance with each of the Loan Documents, and so long as no
event of default hereunder or under any of the other Loan Documents shall have
occurred or be continuing, Bank agrees to extend to Borrower an open-end credit
line on the basis of the following advance formula (such advance formula being
hereinafter referred to as the "Borrowing Base"): eighty percent (80%) of the
value of Borrower's Eligible Accounts Receivable, not to exceed $650,000.00 at
any one time outstanding, plus fifty percent (50%) of the value of Borrower's
Eligible Inventory, not to exceed the lesser of $250,000.00 or fifty percent
(50%) of the outstanding principal balance owed on the Revolving Line, and
provided that in no event shall the aggregate sum of all advances made by Bank
to Borrower at any one time outstanding hereunder exceed the sum of $650,000.00.
Within such limits and subject to the terms of this Agreement, Borrower may
borrow, repay without penalty or premium, and reborrow hereunder, from the date
of this Agreement until the Maturity Date. It is expressly understood and agreed
that Bank shall have no obligation to make an advance under the Revolving Line
if the amount of such advance together with the amount outstanding under the
Revolving Line exceeds or would exceed the lesser of (i) $650,000.00 or (ii) the
Borrowing Base.
         3.2 All borrowings under this Revolving Line shall be made by entering
such advances as debits to Borrower's Loan Account. Bank shall also record in
Borrower's Loan Account other charges, expenses and items properly chargeable to
Borrower hereunder, all payments made by Borrower on account of indebtedness
under the Revolving Line and other appropriate debits and credits. The debit
balance of Borrower's Loan Account shall reflect the amount of Borrower's
indebtedness from time to time hereunder. At least once each month, Bank shall
render a statement of account for Borrower's Loan Account which statement shall
be considered correct and accepted by Borrower and binding upon Borrower unless
Borrower notifies Bank to the contrary within sixty (60) days of Bank's sending
said statement to Borrower.
         3.3 If at any time the outstanding balance of Borrower's Loan Account
exceeds $650,000.00, then Borrower shall immediately remit to Bank good funds
sufficient to eliminate such excess and, if Bank requests, deliver to Bank
additional collateral of a value and character satisfactory to Bank.
         3.4 In the event that the availability of advances hereunder expires by
the terms of this Agreement, or by the terms of any agreement extending the
expiration date of this Agreement, Bank may, in its sole discretion, make
requested advances; however, it is expressly acknowledged and agreed that, in
such event, Bank shall have the right, in its sole discretion, to decline to
make any requested advance and may require payment in full of Borrower's Loan
Account at any time without prior notice to Borrower and the making of any such
advances shall not be construed as a waiver of such right by Bank.
Nothing in this Section 3 shall be deemed to extend the availability of the
Revolving
<PAGE>   7

Line beyond the time noted in Section 14 hereof.

         SECTION 4.  INSPECTION OF RECORDS; FURTHER ASSURANCE.
         4.1 Borrower shall allow Bank, by or through any of its officers,
agents, employees, attorneys or accountants to (i) examine, inspect and make
extracts from Borrower's books and records; (ii) analyze Borrower's financial
statements; (iii) arrange for verification of Borrower's Accounts Receivable and
Inventory under reasonable procedures, directly with Account Debtors or by other
methods; and (iv) inspect and audit Borrower's Inventory and other Collateral at
any time during normal business hours, without prior notice to Borrower; and
Borrower shall allow, do, make, execute and deliver all such additional and
further acts, things, deeds, assurances and instruments which Bank may require
more completely to vest in and assure to Bank its rights hereunder or in any
Collateral.

         SECTION 5.  SECURITY INTEREST OF BANK IN COLLATERAL.
         5.1 As security for the payment and performance of all Liabilities,
Bank shall have and is hereby granted a continuing lien on and security interest
in the following Collateral:
         (a)  all Borrower's Accounts and Accounts Receivable, whether now or
              hereafter owned, existing, created, arising or acquired;
         (b)  all Borrower's Inventory, equipment, machinery and furnishings,
              whether now or hereafter owned, existing, created, arising or
              acquired;
         (c)  all Borrower's contract rights, documents, instruments, and
              general intangibles, whether now or hereafter owned, existing,
              created, arising or acquired;
         (d)  all goods, instruments, notes, notes receivable, documents,
              documents of title, policies and certificates of insurance,
              securities, chattel paper, deposits, cash and other property now
              or hereafter owned by Borrower or in which it now or hereafter has
              an interest, which are now or may hereafter be in the possession
              of Bank, or which are otherwise assigned to Bank, or as to which
              Bank may now or hereafter control possession by documents of title
              or otherwise; and
         (e)  all substitutions, accessions, additions, parts, accessories,
              replacements, Proceeds and products of, for and to any and all of
              the foregoing, including, without limitation, insurance and tort
              proceeds, and any and all such substitutions, accessions,
              additions, parts, accessories, replacements, proceeds and products
              in the form of any of the property described or referenced in (a)
              through (d) above.

         No submission by Borrower to Bank of any schedule or other particular
identification of Collateral shall be necessary to vest in Bank title to or a
security interest in each and every item of Collateral now existing or hereafter
created or acquired, but rather, such title and security interest shall vest in
Bank immediately upon the creation or acquisition of any item of Collateral,
without the necessity for any other or further action by Borrower or Bank;
provided, however, that Borrower shall execute such other and additional
documents, instruments and agreements as reasonably may be required by Bank to
evidence the security interests contemplated hereby.
         5.2 To the extent allowable under applicable law, the Uniform
Commercial Code of Alabama shall govern the security interests provided for
herein. In connection therewith, Borrower shall take such steps and execute and
deliver (or cause the execution and delivery of) such financing statements,
continuation statements, agreements (including, without limitation, security
agreements and landlord, creditor and mortgagee subordination agreements),
documents, and papers (all in form and substance acceptable to Bank) as Bank may
from time to time request to perfect or preserve the perfection and priority of
Bank's security interests granted hereby or by any of the other Loan Documents.
         5.3 If, by reason of location of Collateral or otherwise, the creation,
validity, or perfection of security interests provided for herein are governed
by the law of a jurisdiction other than Alabama, Borrower shall take such steps
and execute and deliver such documents, agreements, papers and financing
statements as Bank may from time to time request to comply with the Uniform
Commercial Code, the Uniform Trust Receipts Act, the Factors Lien Act, or other
laws of other states or jurisdictions. Borrower hereby appoints and empowers
Bank, or any employee of Bank

<PAGE>   8

which Bank may designate for the purpose, as its attorney-in-fact, to execute
(and file, as appropriate) on its behalf any documents, agreements, papers and
financing statements which, in Bank's sole judgment, are necessary to be
executed and/or filed in order to perfect or preserve the perfection and
priority of Bank's security interests granted hereby or by any of the other Loan
Documents.
         5.4 Borrower shall not pledge, mortgage, or create or suffer to exist a
security interest in any of the Collateral or any Proceeds or products thereof,
or sell, assign, or create a security interest in any of the Collateral or any
Proceeds or products thereof in favor of any person other than Bank unless such
security interest is expressly subordinate to Bank's security interest therein
and Bank has approved in writing the existence and priority of such security
interest.
         5.5 Upon demand from Bank at any time or times that Borrower is liable
to Bank, Borrower shall assign, transfer or deliver to Bank additional
Collateral of a value and character satisfactory to Bank, or make such payment
on account of Liabilities as Bank may require. Nothing in this Section 5 shall
be deemed to extend the availability of the Revolving Line beyond the time noted
in Section 14 hereof.

         SECTION 6.  COLLECTION OF ACCOUNTS RECEIVABLE.
         6.1 Until Bank requests that Account Debtors on Accounts Receivable of
Borrower be notified of Bank's security interest therein, Borrower shall
continue to collect such Accounts Receivable. Upon Bank's request, Borrower
shall notify Bank of such collections as received and shall hold the same in
trust for Bank without commingling the same with other funds of Borrower and
shall turn the same over to Bank immediately upon receipt in the identical form
received. Proceeds so transmitted to Bank may be handled and administered in and
through a remittance or special account; the maintenance of any such account
shall be solely for the convenience of Bank, and Borrower shall not have any
right, title, or interest in or to any such account or in the amounts at any
time appearing to the credit thereof. Bank shall not be required to credit
Borrower's Loan Account with the amount of any check or other instrument
constituting provisional payment until Bank has received final payment thereof
at its office in cash or solvent credits accepted by Bank. Borrower shall, at
the request of Bank, notify the Account Debtors of the security interest of Bank
in any Account and shall instruct Account Debtors to remit payments directly to
Bank, and Bank may itself at any time so notify Account Debtors.
         6.2 Borrower agrees that no court action or other legal proceeding or
garnishment, attachment, repossession of property, detinue or any other attempt
to repossess any merchandise covered by an Account shall be attempted by
Borrower except by or under the direction of competent legal counsel. Borrower
hereby agrees to indemnify and hold Bank harmless for any loss or liability of
any kind or character which may be asserted against Bank by virtue of any suit
filed, process issued, or any repossession or attempted repossession done or
attempted by Borrower or by virtue of any other actions or endeavors which
Borrower may make to collect any Accounts or repossess any such merchandise.

         SECTION 7.  ADDITIONAL AFFIRMATIVE COVENANTS.
         Until all indebtedness of Borrower to Bank has been paid in full and
all Liabilities have been satisfied:
         7.1 Borrower shall submit or cause to be submitted to Bank such
financial and other information which Bank shall request regarding Borrower, the
Collateral and any endorser, guarantor or surety of any of the Liabilities of
Borrower to Bank when and as requested by Bank, including without limitation:
(i) Borrower's internally prepared monthly financial statements including a
balance sheet and income statement within thirty (30) days after the close of
each month and attested to by an authorized officer of Borrower; (ii) Borrower's
annual compiled fiscal year end financial statements within one hundred twenty
(120) days after the close of each fiscal year, including a balance sheet as of
the close of such period, an income statement, and a reconciliation of
stockholder's equity prepared by an independent certified public accountant
acceptable to Bank and analyzed in accordance with generally accepted accounting
principles; and (iii) annual personal financial statements of Dennis and Sheila
Sierk and Charles and Kerry Garrett.
         7.2 Borrower shall (i) maintain insurance (written by insurance
companies acceptable to Bank) in form, amount and substance acceptable to Bank,
including, without limitation, extended multi-peril hazard, worker's
compensation, general

<PAGE>   9

liability insurance and insurance upon Borrower's property, all facets of its
businesses and all the Collateral; (ii) furnish to Bank, upon request, a
statement of the insurance coverage; (iii) obtain other or additional insurance
promptly, upon request of Bank, to the extent that such insurance may be
available; (iv) cause Bank to be named as loss payee as to all insurance
covering Collateral hereunder, pursuant to a New York Standard (long form) loss
payable endorsement. All insurance policies shall provide for a minimum of ten
(10) days' written cancellation notice to Bank and, at Bank's request, all
policies shall be delivered to and held by Bank. Bank is hereby made
attorney-in-fact for Borrower to obtain, adjust, and settle, in its sole
discretion, such insurance and to endorse any drafts or checks issued in
connection with such insurance. In the event of failure to provide and maintain
insurance required by this Agreement, Bank may, at its option, provide such
insurance and charge the costs and expenses incurred to Borrower's Loan Account.
         7.3 Borrower does and shall at all times while any Liabilities remain
unsatisfied comply with all laws, ordinances, rules and regulations of any
governmental authority or entity governing or affecting Borrower, any of its
property, the Collateral or any part thereof, and shall immediately notify Bank
of any and all alleged or asserted violations of any such laws, ordinances or
regulations. In the event of failure to provide and maintain insurance required
by this Agreement, Bank may, at its option, provide such insurance and charge
the costs and expenses incurred to Borrower's Loan Account.
         7.4 Borrower shall maintain a minimum Tangible Net Worth of not less
than $550,000 between the date hereof and December 30, 1999, inclusive, and to
increase to $600,000 at December 31, 1999.
         7.5 Borrower's Total Debt to Tangible Net Worth Ratio shall not exceed
2.00 to 1.00. Nothing in this Section 7 shall be deemed to extend the
availability of the Revolving Line beyond the time noted in Section 14 hereof.

         SECTION 8.  ADDITIONAL NEGATIVE COVENANTS.
         Until all indebtedness of Borrower to Bank has been paid in full and
all Liabilities have been satisfied:
         8.1 Borrower shall not create or permit the creation of any lien upon
any of its property, except for (i) liens for taxes, assessments or governmental
charges not yet payable; and (ii) security interests in equipment, provided that
they are limited to those securing a portion of the purchase price of said
equipment.
         8.2 Borrower shall not borrow any money other than for trade credit and
the purchase of equipment in the ordinary course of business unless such loans
shall be fully subordinated hereto, and Borrower shall not guarantee, endorse or
assume, either directly or indirectly, any indebtedness of any other
corporation, person, or entity.
         8.3 Borrower shall not purchase or in any manner acquire any of its
outstanding shares without Bank's prior written consent.
         8.4 Borrower shall not purchase or acquire, directly or indirectly, any
shares of stock, any substantial part of the assets of, any interest in,
evidences of indebtedness or other securities of any person, corporation or
other entity, except in settlement of customers' Accounts.
         8.5 Borrower shall not (i) liquidate, discontinue or materially reduce
its normal operations with intention to liquidate; (ii) cause, allow or suffer
to occur (a) the merger or consolidation of or involving Borrower with or into
any corporation, partnership, or other entity, or (b) the sale, lease, transfer
or other disposal of all or any substantial part of its assets, or any of its
Accounts Receivable; (iii) acquire any corporation, partnership or other entity
(or any interest therein), whether by stock or asset purchase or acquisition or
otherwise, without the prior written consent of Bank; or(iv) cause, allow, or
suffer to occur any change in the ownership, nature, corporate structure or
management of Borrower without the prior written consent of Bank.
         8.6 Borrower shall not make any payment upon any subordinated
indebtedness in any subordination agreement delivered to Bank. Nothing in this
Section 8 shall be deemed to extend the duration of the Revolving Line beyond
the time noted in Section 14 hereof.

         SECTION 9.  EVENTS OF DEFAULT; ACCELERATION.
         Any or all of the liabilities of Borrower to Bank, including, without
limitation, the Liabilities, shall be, at the option of Bank and notwithstanding
any

<PAGE>   10

time or credit allowed by any instrument evidencing any of the Liabilities,
immediately due and payable without notice or demand, and the obligation of Bank
to make advances hereunder shall immediately cease and terminate upon the
occurrence of any of the following events of default:
         (a)  default in the payment or performance, when due or payable, of any
              of the Liabilities of Borrower, or of any liability or obligation
              (whether now or hereafter existing, arising or incurred, direct or
              indirect, conditional or unconditional) of any endorser,
              guarantor, or surety for any of the Liabilities of Borrower to
              Bank;
         (b)  failure by Borrower or any other person or entity, as applicable,
              to (i) pay or perform any act or obligation imposed hereby or by
              any of the other Loan Documents, or (ii) comply with any of the
              terms, conditions, covenants or requirements contained or
              referenced in one or more of the Loan Documents;
         (c)  failure of Borrower or any other person or entity, as applicable,
              to pay when due (i) any tax or (ii) any premium on any (a)
              insurance policy assigned to Bank, or (b) any insurance covering
              any Collateral;
         (d)  if any warranty or representation contained herein shall prove
              false or misleading or if Borrower or any endorser, guarantor or
              surety for any of the Liabilities of Borrower to Bank made or
              makes any other misrepresentation to Bank for the purpose of
              obtaining credit or any extension of credit;
         (e)  failure of Borrower or any endorser, guarantor, or surety for any
              of the Liabilities of Borrower to Bank to furnish financial
              information or to permit the inspection of the books or records or
              Collateral of Borrower or of any endorser, guarantor or surety for
              any of the Liabilities of Borrower to Bank;
         (f)  issuance of an injunction or attachment against property of, the
              general assignment by, judgment against or filing of petition in
              bankruptcy by or against Borrower or any endorser, guarantor or
              surety for any of the Liabilities of Borrower to Bank; the filing
              of an application in any court for a receiver for Borrower or any
              endorser, guarantor or surety for any of the Liabilities of
              Borrower to Bank; or the dissolution, incapacity or liquidation of
              Borrower or of any endorser, guarantor or surety for any of the
              Liabilities of Borrower to Bank;
         (g)  calling of a meeting of creditors, appointment of a committee of
              creditors or liquidation agents, or offering of a composition or
              extension to creditors by, for or of Borrower or by, for or of any
              endorser, guarantor or surety for any of the Liabilities of
              Borrower to Bank;
         (h)  Bankruptcy or Insolvency of Borrower or of any of Borrower's
              shareholders, or of any endorser, guarantor or surety for any of
              the Liabilities of Borrower to Bank;
         (i)  any change in the ownership, nature, structure, management or
              control of Borrower without the prior written consent of Bank;
         (j)  failure of Borrower or any other person or entity, as applicable,
              to maintain any insurance required hereunder and/or assigned or
              pledged to Bank in connection herewith;
         (k)  occurrence or continuation of any default or event of default by
              or attributable to Borrower under or in connection with any
              mortgage, lease, security agreement, indenture or similar
              agreement to which Borrower is now or may hereafter be a party or
              by which Borrower or any of its property (including, without
              limitation, the Collateral) is now or may hereafter be bound or
              affected;
         (l)  fraud or misrepresentation by or on behalf of Borrower in its
              transactions with Bank;
         (m)  such a change in the condition or affairs (financial or otherwise)
              of Borrower or of any endorser, guarantor or surety for any of the
              Liabilities of Borrower to Bank or of the Collateral or any other
              source of repayment of or security for any of the Liabilities
              which, in the opinion of Bank, impairs Bank's security or
              increases its risk;
         (n)  violation of or failure to abide by any covenant, term or
              provision of this Agreement, the Note or any of the other Loan
              Documents; or the

<PAGE>   11

              termination, cancellation or revocation of any Loan Document
              without Bank's consent or the determination that any of the Loan
              Documents is void, voidable or unenforceable; or
         (o)  any default or event of default under the Note or any of the other
              Loan Documents.

         SECTION 10.  POWER TO SELL OR COLLECT COLLATERAL.
         Upon the occurrence of any of the above events of default and at any
time thereafter, Bank shall have, in addition to all other rights and remedies,
the remedies of a secured party under the Uniform Commercial Code of Alabama
(regardless of whether the Uniform Commercial Code has been enacted in the
jurisdiction where rights or remedies are asserted), including, without
limitation, the right to take possession of the Collateral, and for that purpose
Bank may, so far as Borrower can give authority therefor, enter upon any
premises on which the Collateral may be situated and remove the same therefrom
or take possession of same and/or store the same on such premises pending
disposition under the terms of this Agreement or applicable law. Bank may
require Borrower to assemble the Collateral and make it available to Bank at a
place designated by Bank which is reasonably convenient to both parties. Unless
the Collateral is perishable or threatens to decline speedily in value or is of
a type customarily sold on a recognized market, Bank shall give to Borrower at
least five (5) days' written notice of the time and place of any public sale of
Collateral or of the time after which any private sale or any other intended
disposition is to be made. Bank may, at any time, in its discretion, transfer
any securities or other property constituting Collateral into its own name or
that of its nominee and receive the income therefrom and hold the same as
security for the Liabilities or apply it on principal, interest, charges or
expenses due on Liabilities in any manner deemed appropriate by Bank. Insofar as
Collateral shall consist of Accounts Receivable, insurance policies,
instruments, chattel paper, choses in action or the like, Bank may demand,
collect, receipt for, settle, compromise, adjust, sue for, foreclose or realize
upon Collateral as Bank may determine, whether or not Liabilities or Collateral
are then due, and for the purpose of realizing Bank's rights therein, Bank may
receive, open and dispose of mail addressed to Borrower and endorse notes,
checks, drafts, money orders, documents of title or other evidences of payment,
shipment or storage or any form of Collateral on behalf of and in the name of
Borrower as Borrower's attorney-in-fact for such purpose. Bank may apply
Collateral and the Proceeds from any Collateral against the Liabilities secured
hereby in any manner deemed appropriate by Bank. The enumeration of the
foregoing rights is not intended to be exhaustive, and the exercise of any right
shall not preclude the exercise of any other rights, all of which shall be
cumulative. As against the obligations secured hereby, Borrower hereby expressly
waives all claims and all rights to claim any exemptions, both as to personal
and real property, allowed or allowable under the Constitution or laws of the
United States, the State of Alabama or any other jurisdiction. Any notice to
Borrower of sale, disposition or other intended action by Bank, required by law
to be given to Borrower, sent to Borrower at the address of Borrower shown on
the first page of this Agreement or at such other address of Borrower as may
from time to time be shown on Bank's records, at least five (5) days prior to
such action, shall constitute reasonable notice to Borrower.

         SECTION 11.  SET OFF.
         Bank is hereby given a continuing lien as additional security for all
Liabilities upon any and all moneys, securities and other property of Borrower,
and the Proceeds thereof, now or hereafter held or received by or in transit to
Bank from or for Borrower, whether for safekeeping, custody, pledge,
transmission, collection or otherwise, and also upon any and all deposit
balances (general or special) and credits of Borrower with, and any and all
claims of Borrower against Bank at any time existing, and upon the occurrence of
an event of default hereunder, Bank may apply or set off the same against the
Liabilities and indebtedness hereby secured in any manner deemed appropriate by
Bank.

         SECTION 12.  WAIVERS.
         Borrower waives demand, notice of protest, notice of intent to
accelerate, notice of acceleration, notice of acceptance of this Agreement, and
notice of loans made, credit extended, Collateral received or delivered or other
action taken in reliance hereon and all other demands and notices of any
description. With respect

<PAGE>   12

both to the Liabilities and Collateral, Borrower assents to any extension or
postponement of the time of payment or any other indulgence, to any
substitution, exchange or release of any or all of the Collateral, to the
addition or release of any party or person primarily or secondarily liable, to
the acceptance of partial payments thereon and the settlement, compromising or
adjusting of any thereof, all in such manner and at such time or times as Bank
may deem advisable. Bank shall have no duty as to the collection or protection
of any or all of the Collateral or any income therefrom, nor as to the
preservation of any rights against prior parties, nor as to the preservation of
any rights pertaining thereto beyond the safe custody of Collateral in its
possession. Bank may exercise its rights with respect to Collateral without
resorting or regard to other Collateral or sources of reimbursement for the
Liabilities. Bank shall not be deemed to have waived any of its rights upon or
under any of the Liabilities or Collateral unless such waiver be in writing and
signed by Bank. No delay or omission on the part of Bank in exercising any right
shall operate as a waiver of such right or any other right. A waiver on any one
occasion shall not be construed as a bar to or waiver of any right on any
further occasion. All rights and remedies of Bank with respect to Liabilities or
Collateral, whether evidenced hereby, by any of the other Loan Documents or by
any other instrument or paper, shall be cumulative and may be exercised
singularly or concurrently.

         SECTION 13.  EXPENSES, PROCEEDS OF COLLATERAL.
         Irrespective of whether the proceeds of the Revolving Line are
disbursed, Borrower shall pay all fees and expenses, including, without
limitation, legal fees and expenses, filing fees, insurance premiums and
expenses, appraisal fees, recording costs and taxes incurred by Bank or Borrower
from time to time in connection with the preparation and closing, filing,
administration, amendment, and modification of the Revolving Line, this
Agreement, the Note, and other Loan Documents and those documents and
instruments associated with the perfection and creation of the security
interests granted pursuant hereto or pursuant to any of the other Loan
Documents. Borrower shall pay to Bank on demand any and all such fees and
expenses together with any and all fees, expenses and costs of (a) collection or
(b) otherwise incurred or paid by Bank in protecting or enforcing its rights
upon or with respect to any of the Liabilities, the Loan Documents or the
Collateral (including, without limitation, reasonable counsel fees). After
deducting all of said expenses, the residue of any proceeds of collection or
sale of Liabilities or Collateral shall be applied to the payment of principal
of, interest on, and charges and expenses related to the Liabilities in such
order or preference as Bank may determine, proper allowance for interest on
Liabilities not then due being made, and any excess shall be returned to
Borrower and Borrower shall remain liable for any deficiency.

         SECTION 14.  DURATION; EXTENSION.
         The Revolving Line shall terminate on June 1, 2000, at which time all
principal, interest, charges and expenses outstanding hereunder, under the Note
or under any of the other Loan Documents shall be due and payable in full unless
due sooner under the terms of the Note, this Agreement or any of the other Loan
Documents. It is understood that any extension hereof may require a revision of
certain portions of this Agreement. No modification or amendment of this
Agreement or extension of the termination date shall be effective unless placed
in writing and duly executed by Bank and Borrower. It is expressly agreed that
this Agreement shall survive the expiration or termination of the Revolving Line
in all respects necessary for Bank to exercise its rights and remedies hereunder
and with respect to the Collateral. The termination or expiration of the
Revolving Line shall in no way affect any transactions entered into or rights
created or obligations incurred prior to such termination or expiration; rather,
such rights and obligations shall be fully operative until the same are fully
disposed of, concluded and/or liquidated. Without limitation to the generality
of the foregoing, such termination or expiration shall not release nor diminish
any of (i) Borrower's obligations and agreements, or (ii) Bank's rights and
remedies arising hereunder or in connection herewith until full payment and
performance of all of the Liabilities. This Agreement shall be a continuing
agreement in every respect.

         SECTION 15.  GENERAL.
         Any demand upon or notice to Borrower that Bank may elect to give shall
be effective upon delivery if such notice is given personally, or upon dispatch
if deposited in the mails or delivered to a telegraph, wireless or radio company

<PAGE>   13

addressed to Borrower at the address noted on the first page of this Agreement
or, if Borrower has notified Bank in writing of a change of address, to
Borrower's last address so notified. Demands or notices addressed to Borrower's
address at which Bank customarily communicates with Borrower shall also be
effective. If at any time or times by assignment or otherwise Bank transfers any
Liability (either separately or together with the Collateral therefor), such
transfer shall carry with it Bank's powers and rights under this Agreement with
respect to the Liability and/or Collateral transferred, and the transferee shall
become vested with said powers and rights whether or not they are specifically
referred to in the transfer. If and to the extent Bank retains any other
Liability or Collateral, Bank will continue to have the rights and powers herein
set forth with respect thereto. The Borrower agrees that the Revolving Line,
this Agreement and all of the other Loan Documents, including matters of
construction, validity and performance, shall be governed by and construed under
the laws of the State of Alabama. This Agreement has been negotiated and is
being executed and delivered in the State of Alabama, or if executed elsewhere,
shall become effective upon Bank's receipt and acceptance of the executed
original of this Agreement in the State of Alabama; provided, however, that Bank
shall have no obligation to give, nor shall Borrower be entitled to receive any
notice of such acceptance for this Agreement to become a binding obligation of
Borrower. It is intended, and Borrower and Bank specifically agree, that the
laws of the State of Alabama governing interest shall apply to this transaction.
Borrower hereby acknowledges that (i) the negotiation, execution, and delivery
of the Loan Documents constitutes the transaction of business within the State
of Alabama, (ii) any cause of action arising under any of said Loan Documents
will be a cause of action arising from such transaction of business, and (iii)
Borrower understands, anticipates, and foresees that any action for enforcement
of payment of the Revolving Line or the Loan Documents may be brought against it
in the State of Alabama. To the extent allowed by law, Borrower hereby submits
to jurisdiction in the State of Alabama for any action or cause of action
arising out of or in connection with the Revolving Line or the Loan Documents
and shall waive any and all rights under the laws of any state or jurisdiction
to object to jurisdiction or venue within Madison County, Alabama;
notwithstanding the foregoing, nothing contained in this paragraph shall prevent
Bank from bringing any action or exercising any rights against Borrower, any
guarantor, any security for the Revolving Line, or any of Borrower's or any
guarantor's properties in any other county, state, or jurisdiction. Initiating
such action or proceeding or taking any such action in any other state shall in
no event constitute a waiver by Bank of any of the foregoing. Nothing contained
herein, or in any of the documents contemplated hereby, shall be deemed to
render Bank on the one hand, and Borrower on the other hand, partners or
venturers for any purpose. This Agreement is intended to take effect as a sealed
instrument.

<PAGE>   14

         IN WITNESS WHEREOF, the parties hereto have hereunder set their hands
and seals on this 9th day of July, 1999.

                                            BORROWER:

Attest:                                     OPTIMATION, INC.

By: /s/ Charles W. Garrett                  By: /s/ Dennis A. Sierk
    --------------------------------            --------------------------------
Its:                                        Its:  President

[CORPORATE SEAL]

                                            BANK:
Witness:                                    COMPASS BANK

/s/ Kerry B. Garrett                        By: /s/ Arlene Stackhouse
-----------------------------------             -------------------------------
                                            Its: Vice President

STATE OF ALABAMA
COUNTY OF MADISON

         I, the undersigned, Notary Public in and for said County in said State,
hereby certify that Dennis Sierk, whose name as President of OPTIMATION, INC.,
an Alabama corporation, is signed to the foregoing instrument and who is known
to me, acknowledged before me on this day that, being informed of the contents
of the instrument, he, as such officer and with full authority, executed the
same voluntarily for and as the act of said corporation.

         Given under my hand this the 9th day of July, 1999.

                                         /s/ Jane M. Wasden
                                         ---------------------------------------
                                         Notary Public
[NOTARIAL SEAL]                          My Commission Expires: February 2, 2003

STATE OF ALABAMA
COUNTY OF MADISON

         I, the undersigned, Notary Public in and for said County in said State,
hereby certify that Arlene Stackhouse, whose name as Vice President of COMPASS
BANK, an Alabama banking corporation, is signed to the foregoing instrument and
who is known to me, acknowledged before me on this day that, being informed of
the contents of the instrument, she, as such officer and with full authority,
executed the same voluntarily for and as the act of said banking corporation.

         Given under my hand this the 9th day of July, 1999.

                                         /s/ Jane M. Wasden
                                         ---------------------------------------
                                         Notary Public
[NOTARIAL SEAL]                          My Commission Expires: February 2, 2003

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