    AST RESEARCH, INC.            TECHNICAL BULLETIN #0902                3-15-94

                             BRAVO LC HANGS DURING BOOT

    PROBLEM:       The Bravo LC hangs during boot with one of two symptoms.
                   Either a beep code nineteen is issued by the system, or there
                   will be no activity on the screen at all.

    CAUSE:         These situations occur when an Intel non SL-Enhanced processor
                   is installed in the processor upgrade socket.  These types of
                   processors may initialize with a non-defined state of the NMI
                   (Non Maskable Interrupt), which is not supported by the Bravo
                   LC motherboard.

    SYSTEMS
    AFFECTED:      Bravo LC and Advantage! Pro.

    SOLUTION:      Replace the non-SL-Enhanced processor with an SL-Enhanced
                   processor available from Intel.  The system board part number
                   is 202594-XXX.