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AST RESEARCH, INC.        TECHNICAL BULLETIN # 1359                 11-9-95

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                  Bravo MS Memory Problems Using IBM SIMMs


PROBLEM

The Bravo MS system may experience erroneous problems when using 4 MB 
and 8 MB SIMMs.  For example: 

     The program may fail.
     The system may not boot.
     Files may be corrupted.


CAUSE

Some SIMMs manufactured by IBM have shown to emit non-standard 
amounts of noise.  This noise has adverse effects on the performance and 
durability of the Bravo MS system, passing invalid information to the CPU.


SOLUTION

The solution is as follows:

1. If experiencing memory-related problems on any Bravo MS system, 
identify the SIMM manufacturer.  The IBM SIMMs are identified by an IBM 
sticker.

2. If the SIMMs are not identified as IBM 'BE' series, they may need to be 
replaced.  The 'BE' is placed to the right of the IBM logo.

To replace the SIMMs, call AST's Technical Support at (800) 727-1278 and 
request a Return Authorization Number (RAN) for IBM's 4 MB or 8 MB 
upgrade or SIMM kit.  


SYSTEMS AFFECTED
AST PART NUMBER AND DESCRIPTION

All Bravo MS systems.