AST Research, Inc.          Technical Bulletin #1326               10/12/95  



         BRAVO MS PENTIUM MAY EXPERIENCE PROBLEMS WITH ISA BOARDS 

Problem:         Various issues, including ISA video adapters displaying 
		 garbled characters; SCSI add-in adapters do not detect SCSI 
		 hard drives. 

Cause:           The rise time in I/O Channel Ready may not be sufficient 
		 for some ISA adapter cards. The effect is insufficient 
		 initialization or no initialization at all.

Prerequisites:   A full backup of all data on the hard drive in the computer 
		 is strongly suggested. 

Solution:        Replace riser card P/N# 202720-001 with P/N# 202720-001 
		 Rev. A or greater. 

Systems 
Affected:        Part Number                 Description
		 ________________________________________
		 501533-XXX                  BRAVO MS P-60
		 501534-XXX                  BRAVO MS P-90
		 501679-XXX                  BRAVO MS P-60
		 501613-XXX                  BRAVO MS P-90
		 501765-XXX                  BRAVO MS P-90
		 501817-XXX                  BRAVO MS P-100
		 501754-XXX                  BRAVO MS P-100
		 501701-XXX                  BRAVO MS P-75
		 501543-XXX                  ADV!  RMS P-60
		 501544-XXX                  ADV!  RMS P-90
		 501710-XXX                  P III P-75
		 501861-XXX                  P III P-100
		 501926-XXX                  P III P-133
		 501695-XXX                  ADV! 6075P
		 501713-XXX                  ADV! 6060P

Instructions:    Removal and replacement of system " Field Replaceable 
		 Units (FRU) should only be performed according to 
		 installation procedures approved and prescribed by AST 
		 Research, Inc.