    AST RESEARCH, INC.            TECHNICAL BULLETIN #0908                3-22-94

                          AST POWEREXEC SYSTEM SETUP CHANGE

    PROBLEM:       The PowerExec Power Station does not recognize a Colorado
                   Memory Systems 250 MB Jumbo Tape Drive. The error message:

                           "Error 87 No Tape Drive Detected"

                   is displayed while trying to do a Tape Status, Format, and
                   Directory of Tape. The version of Colorado tape software is v.
                   3.03 for DOS.

    CAUSE:         An incompatibility between the I/O address of the Powerstation
                   and the Colorado Tape Drive.

    SYSTEMS
    AFFECTED:      Power Station PWRE.

    SOLUTION:      Colorado Memory Systems has provided instructions on modifying
                   their code to enable the selection of a secondary I/O address.
                   This involves using DEBUG.  The following are the steps to
                   allow the Colorado JUMBO 250MB tape drive to work with the AST
                   PowerStation/PowerExec:

                      AST PowerExec System Setup Change

                   1) Go to System Setup and press +.
                   2) Select System Configuration and press .
                   3) Select PowerStation Options: Floppy Drive B.
                   4) Select 1.2 MB 5.25" and press .
                   5) Select Exit To Main Menu and press .
                   6) Select Exit System Setup and press .
                   7) Select Exit and Save Changes. Press .

                      Colorado Software Change

                   This change applies to Colorado tape backup software for DOS,
                   version 3.03.

                   1) Go to the subdirectory that contains the tape software
                      (TAPE).
                   2) Type: DEBUG TAPE.CFG and press .
                   3) Type:  and press . This changes the
                      address from F0 to 70.
                   4) Type: W and press . This writes the change to the
                      file.
                   5) Type: Q and press . This quits debug.
                   6) Reboot system.