AST RESEARCH, INC.        TECHNICAL BULLETIN # 1560          08/27/96 
 
 
 
TITLE:  Bravo MS/LC and ATI Video
 
 
SUMMARY 
 
   The Bravo MS system may experience screen flicker when opening a 
   DOS window.
   
   This issue affects the following systems: 501772, 501773, 501774, 
   501775, 501776, 501777, 501778, 501784, 501814, 501815, 501816, 
   501860, 501861, 501916, 501926, and 501950. See Software 
   Bulletin # 0326.
   
   This issue also affects the following systems: 501749 and 501841. 
   See Software Bulletin # 0327.    


ISSUE 
 
   1. The user may experience a 0.5 second delay in video 
      synchronization when switching between the GUI (Graphical User
      Interface) and a DOS window under OS/2.
   
   2. The monitor may experience excessive switching of video modes 
      during boot up of Windows 95.    

 
BACKGROUND 
 
   The ATI video BIOS 1.055, which is part of the system BIOS, has 
   an excessive amount of delay when switching between video modes.    

 
ACTION 
 
   Update the system BIOS to version 1.07 (AST part number 
   905591-032) or later. File <A HREF="ftp://ftp.ast.com/D-BIOS/05591032.EXE">05591032.EXE</A> is available from one 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 
 
   BIOS v1.07 incorporates ATI video BIOS v1.073.    

 
TAN 000732MC, 000200DO 
 
--------------------------------------------------------------------- 
The information in this data sheet is subject to change without  
notice. AST Research, Inc. shall not be liable for technical or  
editorial errors or omissions contained herein; nor for incidental or  
consequential damages resulting from the furnishing, performance,  
or use of this material. This material contains information protected  
by copyright. No part of this material may be reproduced in any form 
without prior written consent from AST Research, Inc.  
All rights reserved. 
---------------------------------------------------------------------