AST RESEARCH, INC.        TECHNICAL BULLETIN # 1537           7-19-96 
 
 
 
TITLE: Toshiba 5402B CD-ROM and Bravo MS
 
 
SUMMARY 
 
   The user may experience intermittent CD-ROM access failures when 
   the Toshiba CD-ROM drive is configured as a Master in the Secondary
   IDE Channel.
 
   This issue applies to all Bravo MS systems. 


ISSUE 
 
   When using the Toshiba 5402B CD-ROM drive in the Bravo MS system, 
   data errors may occur when some programs are started from CD-ROM.
   The PIO mode used by the Bravo MS system transfers data at 
   Programmed Input Output (PIO) mode 3.  In this mode, the CD-ROM may
   show intermittent READ errors.


BACKGROUND 
 
   The Toshiba 5402B CD-ROM drive did not ship with these AST systems
   and may not be fully compatible with Bravo MS system.
 
 
ACTION 

   AST recommends using the CD-ROM drive supplied as an option with 
   this system.  The Toshiba 5403B CD-ROM drive has been tested and 
   approved for use with these systems.
 
 
NOTES 
 
   N/A
 
 
TAN 000438PB
 
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