                                                             Last Revised
    AST RESEARCH, INC.        TECHNICAL BULLETIN # 1757          09/09/97

    TITLE:  BravoMS 6233,6266,6300Win3.11,Syst Hang

    ISSUE

       After the customer installs DOS version 6.22, and Windows For
       Workgroups version 3.11 (WFW) on a Bravo MS 6233, 6266, or 6300,
       the system may hang when booting to Windows. When this occurs,
       the system may display the Windows logo for about thirty seconds,
       and display an error message on a black screen. For example:

          "Error loading mmsound.drv"

       This incompatibility issue occurs only under the following three
       conditions:

          1. Installing DOS version 6.22.
          2. Using Ultra Direct Memory Access (UDMA)
             hard disk drives.
          3. Loading into Windows 3.11.

       This issue applies to the following systems: 503368-101,
       503368-201, 503370-101, 503370-201, 503502-101, and 503502-201.

    BACKGROUND

       No failure occurs with Non-UDMA drives.

    ACTION

       To avoid the issue described above, remove from the
       AUTOEXEC.BAT file, the line referencing the SMARTDRV.EXE file. An
       example of this line may be:

          C:\DOS\SMARTDRV.EXE /X

    NOTES

       If the customer must use SMARTDRV, the options below will
       work:

       1. Load SMARTDRV High.
       2. Run MEMMAKER (once) prior to starting Windows.

       AST is currently investigating this issue and, once the
       information becomes available, we will update this bulletin.

    TAN OPR 61JJ

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