    AST RESEARCH, INC.        TECHNICAL BULLETIN # 1691          03/25/97

    TITLE:  Crystal Chip and CD Audio

    ISSUE

       Users may experience difficulties hearing music when playing
       games from Mixed Mode CDs on AST computers that use the Crystal
       CS4232 sound chip. Many of  today's games use the Mixed Mode
       format.

       This issue affects the following systems: 501768, 501962, 501856,
       501962, 501964, 501966, and 501968.

    BACKGROUND

       Some of these games reset the CS4232 Mixer CD audio volume to
       zero when initializing the CD-ROM drive. The  result is, the user
       cannot hear any CD music through the speakers.

    ACTION

       To resolve the issue, run the file CS32MIX.EXE. This file will
       increase the CD audio volume. Prior to running the game, enter
       the following from the command prompt:

           CS32MIX /C=15,15

       The user may also place this command in the AUTOEXEC.BAT file.

       To obtain file CS32MIX.EXE, download the following files:

           11950035.EXE
           11950036.EXE

       These files are available from any of AST's On-Line! services as
       follows:

          AST WWW Site:  http://www.ast.com
          AST On-Line! BBS*:  See IB0001.TXT
          CompuServe:  GO: ASTFORUM
          Prodigy:   JUMP: ASTSUPPORT

          * Refer to IB0001.TXT for a list of AST's
            international BBS numbers.

       To decompress this file, create a temporary directory on your
       hard drive, copy the downloaded file to that directory, and run
       the file.

    NOTES

       N/A

    TAN EPR 137GL
    JF/BB
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