    AST RESEARCH, INC        TECHNICAL BULLETIN #0914                  4-18-94

               POWEREXEC EXTENDED MEMORY ERRORS WITH CheckIt SOFTWARE

    PROBLEM:        When using CheckIt 3.0 software from Touchstone Software
                    Corporation, on a 4/25 SL PowerExec, memory errors occur
                    during extended mode test.

    CAUSE:          CheckIt 3.0 software incompatibility when selecting extended
                    mode test.

    SYSTEMS             AST                                     REVISION
    AFFECTED:       PART NUMBER     DESCRIPTION                   LEVEL

                    500936          386/25 SL POWEREXEC Mono        All
                    500937          386/25 SL POWEREXEC Color       All
                    501259          4/25 SL POWEREXEC Mono          All
                    501260          4/25 SL POWEREXEC ColorPlus     All
                    501191          4/33 SL POWEREXEC Mono          All
                    501192          4/33 SL POWEREXEC ColorPlus     All

    SOLUTION:       Upgrade to CheckIt PRO software.