EXHIBIT 10.25

                                ELXSI Corporation
                              3600 Rio Vista Avenue
                                     Suite A
                             Orlando, Florida 32805

                                              As of December 30, 1999
ELX Limited Partnership
3600 Rio Vista Avenue
Suite A
Orlando, Florida  32805

                 $909,150 PROMISSORY NOTE DUE DECEMBER 30, 1999

Dear Sirs:

         Reference is made to that certain $909,150 Promissory Note, dated
December 30, 1996 (the "ELX->ELXSI Corp. Note"), of ELX Limited Partnership, a
Delaware limited partnership ("ELX"), payable to the undersigned ELXSI
Corporation, a Delaware corporation ("ELXSI Corp."). The ELX->ELXSI Corp. Note
matures today, and the accrued and unpaid interest thereunder amounts to
$241,809.09 ("Unpaid Interest").

         1. CAPITALIZATION OF INTEREST. ELX hereby: (A) acknowledges and agrees
that, effective from and after this day,

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the Unpaid Interest is added to the principal of the ELX->ELXSI Corp. Note and,
consequently (without limitation), shall bear interest as provided thereunder,
and (B) ratifies and confirms its principal indebtedness to ELXSI Corp. under
the ELX->ELXSI Corp. Note in the aggregate amount of $1,150,959.09.

         2. EXTENSION. ELXSI Corp. hereby agrees that the "Maturity Date" under
(and as defined in) the ELX->ELXSI Corp. Note is hereby extended by
approximately three years, to December 31, 2002.

         3. FURTHER ASSURANCES. The foregoing provisions shall for all purposes
be effective as an amendment of the ELX->ELXSI Corp. Note. Accordingly, in the
event that ELXSI Corp. wishes to assign or otherwise transfer the ELX->ELXSI
Corp. Note to any third party, ELXSI Corp. shall advise such third party of such
amendments, and/or take such other reasonable actions, as may be reasonably
necessary, in order to render such amendment binding and effective on such third
party. In addition, from time to time after the date hereof, as and when
requested by either party hereto, the other party hereto shall execute and
deliver, or cause to be executed and delivered, such documents and instruments
and shall take, or cause to be taken, such further or other actions as such
requesting party may reasonably deem necessary or desirable in order to further
effect or evidence the transactions contemplated hereby or to otherwise carry
out the intent and purposes of this agreement.

         4. GOVERNING LAW. This agreement shall be interpreted, construed and
enforced in accordance with the laws of the State of New York.

         Kindly indicate your acceptance of and agreement with the foregoing by
executing a counterpart of this letter in the space provided below, whereupon it
shall become a binding agreement between us.

                               Very truly yours,

                               ELXSI CORPORATION


                               By: _________________________
                                    David M. Doolittle
                                    Vice President & Chief
Financial Officer


ACCEPTED AND AGREED TO, as of the date first above written:

ELX LIMITED PARTNERSHIP


By:________________________
     Alexander M. Milley
     Sole General Partner