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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