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AST RESEARCH, INC.         TECHNICAL BULLETIN # 1221                6-20-95

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NETWORK ADAPTERS WITH BOOTROM ON BRAVO MS


PROBLEM

The BootROM uses a portion of conventional memory to execute its 
initialization code overwriting the MCB (Memory Control Blocks).  This causes 
POST errors and the system to lock up.


CAUSE

The new version of Plug-n-Play BIOS uses more space and increases the 
probability of a collision.


SYSTEMS AFFECTED
AST PART NUMBER AND DESCRIPTION

501534-XXX      BRAVO MS P/90
501651-XXX      BRAVO MS-L P/90
501660-XXX      BRAVO MS-T P/90 
501701-XXX      BRAVO MS P/75
501702-XXX      BRAVO MS-L P/75
501703-XXX      BRAVO MS-T P/75
501754-XXX      BRAVO MS P-100


SOLUTION

Update the system BIOS to version 2.0 (AST part number 905541-310).

To obtain the current system BIOS, contact an AST Authorized Service Center, 
or download file 05541310.EXE from AST's BBS (817) 230-6850, in the "Systems" 
file area.  AST's BBS supports modem speeds up to 28.8k bps.
The above file will also be posted on:

CompuServe 
Go ASTSUPPORT

AST Worldwide Web Site
http://www.ast.com

For additional information on the Bravo MS P60/90, Premmia MX Pentium System 
Flash BIOS Update, see Software Bulletin # 0185 in the SBS library or 
AST's BBS.