    AST RESEARCH, INC.        TECHNICAL BULLETIN # 1537           7-19-96

    TITLE: Toshiba 5402B CD-ROM and Bravo MS

    SUMMARY

       The user may experience intermittent CD-ROM access failures when
       the Toshiba CD-ROM drive is configured as a Master in the Secondary
       IDE Channel.

       This issue applies to all Bravo MS systems.

    ISSUE

       When using the Toshiba 5402B CD-ROM drive in the Bravo MS system,
       data errors may occur when some programs are started from CD-ROM.
       The PIO mode used by the Bravo MS system transfers data at
       Programmed Input Output (PIO) mode 3.  In this mode, the CD-ROM may
       show intermittent READ errors.

    BACKGROUND

       The Toshiba 5402B CD-ROM drive did not ship with these AST systems
       and may not be fully compatible with Bravo MS system.

    ACTION

       AST recommends using the CD-ROM drive supplied as an option with
       this system.  The Toshiba 5403B CD-ROM drive has been tested and
       approved for use with these systems.

    NOTES

       N/A

    TAN 000438PB

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