AST RESEARCH, INC.        TECHNICAL BULLETIN # 1638          12/10/96 
 
 
 
TITLE:  Bravo MS Video Conflict w/Stealth64 PCI
 
 
ISSUE 
 
   After installing the Diamond Stealth64 2001TV PCI video adapter 
   into a Bravo MS/MS-T system, the video adapter may cause a 
   conflict with the integrated ATI Mach64 video controller. 
   
   The conflict occurs when the Diamond Stealth64 video adapter card 
   attempts to use the same memory address as the System Board 
   Extension for the Plug-and-Play (PnP) BIOS.
   
   During boot, with the Diamond Stealth64 installed, the following 
   error message is displayed:
   
      "12.35  The computer encountered an error during the 
       resource autoconfiguration process." 
   
   Windows 95 continues to load, and eventually displays the 
   following message: 
   
      "Your display adapter conflicts with another device in 
       your computer." 
   
   The system then prompts the user to run the Hardware Conflict 
   Troubleshooter. Examination of the Display Adapter section in 
   Device Manager reveals both video adapters with yellow 
   exclamation marks, representing the conflict.
   
   This issue affects the following systems: 501951, 501952, 501954, 
   503088, 501955, 501956, 501972, and 503043.    

 
BACKGROUND 
 
   Resources on the Stealth64 are allocated as follows:
   
   No conflict
   
   Memory Range      C0000-C7FFF
   Memory Range      A0000-AFFFF
   Memory Range      B0000-BFFFF
   I/O Range         3B0-3BB
   I/O Range         3C0-3DF
   IRQ               11
   Memory Range      F8000000-FBFFFFFF
   
   Conflict
   
   Memory Range      00000000-03FFFFFF used by System Board 
                     Extension for PnP BIOS    

 
ACTION 
 
   The conflict may be resolved by clearing non-volatile memory. 
   From a command prompt, run the utility CLEARNVS.EXE (AST filename 
   12493031.EXE), available from any AST On Line! services.    

 
NOTES 
 
   N/A    

 
TAN TPR 400CK 
 
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