    AST RESEARCH, INC.         TECHNICAL BULLETIN #0786                  11-16-92

                          POWER EXEC AND FLASH BIOS UPDATE

    When updating the Power Exec's Flash BIOS, be sure that no devices are
    attached to the Power Exec's parallel port.  Certain devices, (e.g., parallel
    port loopback plug), attached to the parallel port during the BIOS update
    will cause the BIOS loader to fail and issue a beep error code, (Floppy disk
    controller error) of 2 long and 3 short beeps.

    If this error occurs, be sure to remove any device or loopback plug attached
    to the Power Exec's parallel port and repeat the BIOS update.  If the problem
    persists, follow the corrective actions indicated in the AST Power Exec
    Hardware Maintenance Manual (AST part number 001617-001).