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    AST RESEARCH, INC.         TECHNICAL BULLETIN # 1414                1-30-96

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          Bravo MS Pentium Problem Reading Toshiba CD-ROM on Secondary
    		    Controller under OS/2 Warp Connect

    PROBLEM

    1. Under OS/2 Warp Connect, the Bravo MS Pentium may not recognize the
       CD-ROM drive returning a "Shadow Initialization" error, or the drive may
       work erratically.

    2. The Bravo MS Pentium may not recognize the CD-ROM under Windows NT.

    CAUSE

    On the secondary IDE controller, the "First Hard Drive" type defaults to
    "None".

    SOLUTION

    When a Toshiba 5302 CD-ROM drive is connected to the secondary IDE
    controller, the "First Hard Drive" type must be set to "Auto" in the system
    Setup menu.

    The BIOS design also requires that the Toshiba CD-ROM be jumpered as "master".

    SYSTEMS AFFECTED
    AST PART NUMBER AND DESCRIPTION

    501772-XXX      Bravo MS P/75
    501774-XXX      Bravo MS P/100
    501777-XXX      Bravo MS-T P/100
    501814-XXX      Bravo MS P/120
    501815-XXX      Bravo MS P/133
    501860-XXX      Bravo MS-T P/133

    Pentium is a Registered Trademark of the Intel Corporation.