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    AST RESEARCH, INC.           TECHNICAL BULLETIN # 1023                 10-5-94

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               MANHATTAN SMP ERROR CODE G9 WITH SCO UNIX RELEASE 3.2v4.x

    PROBLEM:        When booting SCO UNIX, release 3.2v4.x, on the Manhattan SMP,
                    the system hangs at error code G9.  This problem occurs
                    intermittently.

    CAUSE:          The "G" portion of the failure code is an initialization
                    routine and it is defined by SCO as "Initializes the
                    Programmable Interrupt Controllers (PIC) chips and
                    multiprocessors."

    SYSTEMS
    AFFECTED:           AST
                    PART NUMBER           DESCRIPTION

                    520092-XXX      MANHATTAN SMP 486DX/50
                    520155-XXX      MANHATTAN SMP PENTIUM/60

    SOLUTION:       Because this problem is extremely intermittent, the problem is
                    resolved by pressing the reset button to reset the system.
                    AST's Technical Support Organization should be contacted for
                    troubleshooting assistance if the symptom continues to occur
                    after pressing the reset button.