    AST RESEARCH, INC.           TECHNICAL BULLETIN # 0938                6-22-94

                                 AST DESKTOP QUICK TIME

    PROBLEM:        When running certain applications such as the “MYST” CD ROM
                    Windows game, which uses the “QUICK TIME” video decoding scheme,
                    the user may encounter a Windows Application Error.

    CAUSE:          The Windows Application Error is due to QUICK TIME incorrectly
                    using scratch video memory for caching.

    SYSTEMS
    AFFECTED:           AST                                                REVISION
                    PART NUMBER     DESCRIPTION                             LEVEL
                    501429-XXX      PREMMIA MX                               All
                    501430-XXX      PREMMIA MX                               All
                    501431-XXX      PREMMIA MX                               All
                    501432-XXX      PREMMIA MX                               All
                    501452-XXX      PREMMIA GX P/90 3                        All

    SOLUTION:       In the MACX section of the Windows’ SYSTEM.INI file add the
                    following line:

                         DeviceBitmap=Off

                    This will disable QUICK TIME to use Bitmap caching and the
                    problem will not occur.