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    AST RESEARCH, INC.          TECHNICAL BULLETIN # 1175                5-8-95

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    BRAVO MS P-60 P.O.S.T. BEEP 3-6-3 WITH PCI VIDEO PRO LIGHTNING

    PROBLEM

    When a PCI Video Card Pro Lightning is installed in a Bravo MS P-60,
    the system may beep (3-6-3) at POST.  The 3-6-3 sequence means there is no
    video RAM detected.

    CAUSE

    Colorgraphics discovered a bus timing issue with a PAL chip on their PCI
    video adapter.

    SYSTEMS AFFECTED
    AST PART NUMBER AND DESCRIPTION

    501443-XXX     BRAVO MS 4-100T

    SOLUTION

    Upgrade the PAL at location U24 on the Colorgraphics PCI video adapter.
    The new PAL puts the bus timing back in syncronization by increasing the
    nano seconds from 7 to 15 on the PAL chip itself.

    For further information call Colorgraphics at 404-455-3921.