    AST RESEARCH, INC.            TECHNICAL BULLETIN #0933                 6-8-94

                             POWEREXEC COLORPLUS SCREEN FLICKER

    PROBLEM:        Some PowerExec ColorPlus LCD screens may experience screen
                    flicker in either a DOS or a Windows application.

    CAUSE:          The Western Digital 90C26 video chip used on the PowerExec
                    needs to have its own specific driver loaded to fully optimize
                    its performance.

    SYSTEMS
    AFFECTED:           AST
                    PART NUMBER     DESCRIPTION
                    501114-XXX      PWRE 386SL25/3/4 US C+/8
                    501115-XXX      PWRE 486SL25/3/4 US C+/9
                    501165-XXX      PWRE 386SL25/3/4 US C+/9
                    501192-XXX      PWRE 486SL33/3/4 US C+/9

    SOLUTION:       To optimize the PowerExec’s video performance, do the following:

                    1. Install the AST PowerExec Video Driver. This driver is
                       available on the AST BBS, in the Systems file area.
                       The file name is PEVID1.EXE.
                    2. Load Windows to load the driver.
                    3. Reboot the system into either DOS or Windows. Once loaded,
                       the driver ensures the proper video operation on the
                       PowerExec ColorPlus system.