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    AST RESEARCH, INC.          TECHNICAL BULLETIN # 1183               5-15-95

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    		    MANHATTAN G P60 SYSTEM HANGS WITH PCI IRQ CONFLICTS

    PROBLEM

    The NCR SCSI PCI controller and other PCI devices have a sharing problem
    with the same IRQ.  Under NetWare, the Manhattan G system automatically
    dismounts SYS volume or reports a lost hardware interrupt error.

    CAUSE

    The system is using a BIOS prior to revision 1.05, and the CMOS held Last
    Working Configuration (LWC) needs to be cleared.

    SYSTEMS AFFECTED
    AST PART NUMBER AND DESCRIPTION

    501530-XXX MANHATTAN G 5060 - ALL MODELS

    SOLUTION

    1) Use the most current Manhattan G system BIOS, release 1.05 (AST BIOS
    part number 905555-032 A).  Request the part number from AST Spare Parts
    (800) 727-1278, the local AST Authorized Service Center, or download file
    555032.EXE from AST's BBS (817) 230-6850, "Systems" file area.  AST's BBS
    supports modem speeds up to 28.8k bps.  The above file will also be posted
    on:

    CompuServe
    Go ASTSUPPORT

    AST Worldwide Web Site
    http://www.ast.com

    For additional information on the Manhattan G System BIOS, see Software
    Bulletin # 0220 in the SBS library of AST's BBS.

    2.) After the new BIOS is flashed into the system, remove the battery to drain
    the CMOS storage.  This will clear the ESCD for the PCI/Plug-n-Play CMOS
    RAM.

    After these steps are taken, the system will use different IRQs for the add-in
    cards performing to designed specifications.

    NOTE

    Even though a new BIOS is flashed into the system, the new BIOS will continue
    to use the old BIOS's LWC which is stored in the CMOS RAM. The system can
    only be completely reconfigured if the CMOS battery is removed and the LWC is
    erased.