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    AST RESEARCH, INC.          TECHNICAL BULLETIN # 0992               9-21-92

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      PCBENCH DIAGNOSTICS TOOL REPORTING CYRIX PROCESSOR ON THE BRAVO MT 4/100

    PROBLEM:        When running the PCBENCH diagnostics tool, the system's
                    information test reports the 4/100 Intel processor as a Cyrix
                    processor.

    CAUSE:          Both the Intel P24C (in Bravo 100 Mhz) and the Cyrix CPU have
                    the same CPU ID of 480h.  The same address location causes the
                    PCBENCH diagnostics tool to read the processor as a Cyrix and
                    not an Intel.

    SYSTEMS
    AFFECTED:           AST
                    PART NUMBER        DESCRIPTION

                    501278-XXX      BRAVO MT 486DX/33
                    501310-XXX      BRAVO MT 486DX-2/50
                    501279-XXX      BRAVO MT 486DX-2/66

    SOLUTION:       Since the PCBENCH diagnostics tool identifies a Cyrix
                    processor, use another diagnostics tool to confirm that you
                    have an Intel processor.