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    AST RESEARCH, INC.           TECHNICAL BULLETIN # 1235              6-22-95

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    MANHATTAN G590 TWO NCR 8150 DUPLICATES DEVICE INFORMATION

    PROBLEM

    When two NCR 8150 SCSI controllers are installed in the Manhattan G590, the
    system will display all devices attached to the two controllers at boot.
    If the system is warm-booted, the information will be displayed twice for
    the first 8150 and its devices, but no information will be displayed for the
    second 8150.

    CAUSE

    The NCR SCSI BIOS reads the SCSI device information from the board with the
    highest IRQ assignment on a warm re-boot.  The system senses that two 8150
    controllers are installed in the system, but the information for the first
    controller is duplicated and no information is displayed for the second
    controller.

    There is no reduction in functionality or reliability in this configuration.
    The duplication of the SCSI device information does not indicate any
    condition that will lead to failures or problems with the system.

    SYSTEMS AFFECTED
    AST PART NUMBER AND DESCRIPTION           REVISION

    501723-XXX       MANHATTAN G590           All Models

    SOLUTION

    The duplication of the SCSI information will not lead to any problem or
    reduction in functionality; these messages should be ignored.

    There are no plans to remove this message from the boot-up sequence of
    systems using the above configuration.