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                                                                   EXHIBIT 10.31

(BANK ONE LOGO)                                      NOTE MODIFICATION AGREEMENT


This agreement is made and entered into on March 31, 2003, (the "Agreement
Date"), to be effective as of March 31, 2003 (the "Effective Date"), by and
between TeraForce Technology Corporation alone, and its successors (the
"Borrower") and Bank One, NA, with its main office in Chicago, IL (the "Bank").

WHEREAS, the Borrower executed a Line of Credit Note as evidence of indebtedness
in the original face amount of Two Million Seven Hundred Thousand and 00/100
Dollars ($2,700,000.00), dated September 27, 2002 owing by the Borrower to the
Bank, as same may have been amended or modified from time to time (the "Note"),
which Note has at all times been, and is now, continuously and without
interruption outstanding in favor of the Bank; and,

WHEREAS, the Borrower has requested and the Bank has agreed that the Note be
modified to the limited extent as hereinafter set forth;

NOW THEREFORE, in mutual consideration of the agreements contained herein and
for other good and valuable consideration, the parties agree as follows:

1. ACCURACY OF RECITALS. The Borrower acknowledges the accuracy of the Recitals
stated above.

2. MODIFICATION OF NOTE.

         2.1 From and after the Effective Date, a portion of the provision
captioned "PROMISE TO PAY" is hereby amended to read as follows:

         Notwithstanding any other provision in this Note, the maximum principal
         amount available under this Note shall reduce to the following
         amount(s) on and after the following date(s): Two Million Six Hundred
         Nine Thousand Nine Hundred Ninety-Nine and 92/100 Dollars
         ($2,609,999.92) on April 27, 2003: One Million Seven Hundred
         Ninety-Nine Thousand Nine Hundred Ninety-Nine and 92/100 Dollars
         ($1,799,999.92) on June 27, 2003; One Million Three Hundred Forty-Nine
         Thousand Nine Hundred Ninety-Nine and 92/100 Dollars ($1,349,999.92) on
         September 27, 2003; Eight Hundred Ninety-Nine Thousand Nine Hundred
         Ninety-Nine and 92/100 Dollars ($899,999.92) on December 31, 2003; and
         Eight Hundred Ninety-Nine Thousand Nine Hundred Ninety-Nine and 92/100
         Dollars ($899,999.92) on March 26, 2004. The Borrower shall, on or
         before each such date, make such principal payments as are needed to
         reduce the outstanding principal balance under this Note as of each
         such date to an amount not exceeding the applicable maximum principal
         amount.

         2.2 Each of the Related Documents is modified to provide that it shall
be a default or an event of default thereunder if the Borrower shall fail to
comply with any of the covenants of the Borrower herein or if any
representation or warranty by the Borrower or by any guarantor herein is
materially incomplete, incorrect, or misleading as of the date hereof. As used
in this agreement, the "Related Documents" shall include the Note and all loan
agreements, credit agreements, reimbursement agreements, security agreements,
mortgages, deeds of trust, pledge agreements, assignments, guaranties, or any
other instrument or document executed in connection with the Note or in
connection with any other obligations of the Borrower to the Bank.

         2.3 Each reference in the Related Documents to any of the Related
Documents shall be a reference to such document as modified herein.

3. RATIFICATION OF RELATED DOCUMENTS AND COLLATERAL. The Related Documents are
ratified and reaffirmed by the Borrower and shall remain in full force and
effect as they may be modified herein. All real or personal property described
as security in the Related Documents shall remain as security for the Note and
the obligations of the Borrower in the Related Documents.

4. BORROWER REPRESENTATIONS AND WARRANTIES. The Borrower represents and
warrants to the Bank:

         4.1 No default or event of default under any of the Related Documents
as modified hereby, nor any event that, with the giving of notice or the
passage of time or both, would be a default or an event of default under the
Related Documents as modified herein has occurred and is continuing.

         4.2 There has been no material adverse change in the financial
conditions of the Borrower or any other person whose financial statement has
been delivered to the Bank in connection with the Note from the most recent
financial statement received by the Bank.

         4.3 Each and all representations and warranties of the Borrower in the
Related Documents are accurate on the date hereof.
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         4.4 The Borrower has no claims, counterclaims, defenses, or setoffs
with respect to the loan evidenced by the Note or with respect to the Related
Documents as modified herein.

         4.5 The Note and the Related Documents as modified herein are the
legal, valid, and binding obligations of the Borrower, enforceable against the
Borrower in accordance with their terms.

         4.6 The Borrower, other than any Borrower who is a natural person, is
validly existing under the laws of the State of its formation or organization.
The Borrower has the requisite power and authority to execute and deliver this
agreement and to perform the obligations described in the Related Documents as
modified herein. The execution and delivery of this agreement and the
performance of the obligations described in the Related Documents as modified
herein have been duly authorized by all requisite action by or on behalf of the
Borrower. This agreement has been duly executed and delivered by or on behalf
of the Borrower.

5. BORROWER COVENANTS. The Borrower covenants with the Bank:

         5.1 The Borrower shall execute, deliver, and provide to the Bank such
additional agreements, documents, and instruments as reasonably required by the
Bank to effectuate the intent of this agreement.

         5.2 The Borrower fully, finally, and forever releases and discharges
the Bank and its successors, assigns, directors, officers, employees, agents,
and representatives from any and all causes of action, claims, debts, demands,
and liabilities, of whatever kind or nature, in law or equity, of the Borrower,
whether now known or unknown to the Borrower, (i) in respect of the loan
evidenced by the Note and the Related Documents, or of the actions or omissions
of the Bank in any manner related to the loan evidenced by the Note or the
Related Documents and (ii) arising from events occurring prior to the date of
this agreement.

         5.3 The Borrower shall pay to the Bank:

                  5.3.1 All the internal and external costs and expenses
incurred by the Bank in connection with this agreement (including, without
limitation, inside and outside attorneys, appraisal, appraisal review,
processing, title, filing, and recording costs, expenses, and fees).

6. EXECUTION AND DELIVERY OF AGREEMENT BY THE BANK. The Bank shall not be bound
by this agreement until (i) the Bank has executed this agreement and (ii) the
Borrower performed all of the obligations of the Borrower under this agreement
to be performed contemporaneously with the execution and delivery of this
agreement.

7. INTEGRATION, ENTIRE AGREEMENT, CHANGE, DISCHARGE, TERMINATION, OR WAIVER.
The Note and the Related Documents as modified herein contain the complete
understanding and agreement of the Borrower and the Bank in respect of the loan
and supersede all prior representations, warranties, agreements, arrangements,
understandings, and negotiations.  No provision of the Note or the Related
Documents as modified herein may be changed, discharged, supplemented,
terminated, or waived except in a writing signed by the party against whom it
is being enforced.

8. GOVERNING LAW AND VENUE. This agreement is delivered in the State of Texas
and governed by Texas law (without giving effect to its laws of conflicts). The
Borrower agrees that any legal action or proceeding with respect to any of its
obligations under the Note or this agreement may be brought by the Bank in any
state or federal court located in the State of Texas, as the Bank in its sole
discretion may elect. By the execution and delivery of this agreement, the
Borrower submits to and accepts, for itself and in respect of its property,
generally and unconditionally, the non-exclusive jurisdiction of those courts.
The Borrower waives any claim that the State of Texas is not a convenient forum
or the proper venue for any such suit, action or proceeding. This agreement
binds the Borrower and its successors, and benefits the Bank, its successors
and assigns. The Borrower shall not, however have the right to assign the
Borrower's rights under this agreement or any interest therein, without the
prior written consent of the Bank.

9. COUNTERPART EXECUTION. This agreement may be executed in multiple
counterparts, each of which, when so executed shall be deemed an original, but
all such counterparts, taken together, shall constitute one and the same
agreement.

                 [THIS SPACE HAS BEEN INTENTIONALLY LEFT BLANK]





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10. NOT A NOVATION. This agreement is a modification only and not a novation.
In addition to all amounts hereafter due under the Note and the Related
Documents as they may be modified herein, all accrued interest evidenced by the
Note being modified by this agreement and all accrued amounts due and payable
under the Related Documents shall continue to be due and payable until paid.
Except for the above-quoted modification(s), the Note, any Related Documents,
and all the terms and conditions thereof, shall be and remain in full force and
effect with the changes herein deemed to be incorporated therein. This
agreement is to be considered attached to the Note and made a part thereof.
This agreement shall not release or affect the liability of any guarantor,
surety or endorser of the Note or release any owner of collateral securing the
Note. The validity, priority and enforceability of the Note shall not be
impaired hereby. References to the Related Documents and to other agreements
shall not affect or impair the absolute and unconditional obligation of the
Borrower to pay the principal and interest on the Note when due. The Bank
reserves all rights against all parties to the Note.


                                    BORROWER:

Address: 1240 E. Campbell Road      TeraForce Technology Corporation
         Richardson, TX 75081

                                    By: /s/ ROBERT P. CAPPS
                                       ----------------------------------------
                                    Robert P. Capps    Executive Vice President
                                    -------------------------------------------
                                    Printed Name                        Title



BANK'S ACCEPTANCE

The foregoing agreement is hereby agreed to and acknowledged this ___ day of
_____________, 20__.

                                    BANK:

                                    Bank One, NA, with its main office in
                                    Chicago, IL



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

                                       ----------------------------------------
                                       Printed Name                  Title





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