=

AST RESEARCH, INC.           TECHNICAL BULLETIN # 1235              6-22-95

=


MANHATTAN G590 TWO NCR 8150 DUPLICATES DEVICE INFORMATION 


PROBLEM

When two NCR 8150 SCSI controllers are installed in the Manhattan G590, the 
system will display all devices attached to the two controllers at boot. 
If the system is warm-booted, the information will be displayed twice for 
the first 8150 and its devices, but no information will be displayed for the 
second 8150.


CAUSE

The NCR SCSI BIOS reads the SCSI device information from the board with the 
highest IRQ assignment on a warm re-boot.  The system senses that two 8150 
controllers are installed in the system, but the information for the first 
controller is duplicated and no information is displayed for the second 
controller.

There is no reduction in functionality or reliability in this configuration. 
The duplication of the SCSI device information does not indicate any 
condition that will lead to failures or problems with the system.


SYSTEMS AFFECTED
AST PART NUMBER AND DESCRIPTION           REVISION
	
501723-XXX       MANHATTAN G590           All Models


SOLUTION

The duplication of the SCSI information will not lead to any problem or 
reduction in functionality; these messages should be ignored.

There are no plans to remove this message from the boot-up sequence of 
systems using the above configuration.