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AST RESEARCH, INC.          TECHNICAL BULLETIN # 1163                5-2-95

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				UPDATE PROCEDURE MANHATTAN P/V BIOS 1.09


PROBLEM

When updating the Manhattan P/V BIOS to BIOS 1.09, the system does not 
properly update all BIOS features.


CAUSE

BIOS Release 1.09 includes newly added features and BIOS fields. 
An example of such a field is the addition of memory paging in Manhattan V 
systems with non-ECC memory.

The AST implementation of flash BIOS will only update existing BIOS fields.  
Newly added fields in the flash BIOS are not automatically added by the BIOS 
update utility.  The CMOS memory must be cleared in order to load all of the 
BIOS fields.


SYSTEMS AFFECTED
AST PART NUMBER AND DESCRIPTION

All Manhattan P and V systems.


SOLUTION

It is necessary to clear the EISA CMOS before performing the flash BIOS 
update.


CAUTION

Ensure that all EISA and System Setup options have been printed or recorded 
before erasing the EISA CMOS.  It is recommended that the EISA settings be 
saved to a System Configuration File (.SCI), for reloading after the flash 
procedure is completed.  All EISA configuration information will be cleared 
in performing this procedure. 


NOTE

The EISA CMOS memory must be cleared, regardless of whether EISA 
adapter boards are installed in the system.


To perform the flash BIOS procedure:

1. Open the system and located switch block SW1 on the system board. 
   See AST Manhattan P/V Series User's Manual (P/N 003027-001) for more 
   information.

2. With the system powered OFF, clear EISA CMOS memory by changing switch 
   SW1-4 on the system board to the ON position.  The EISA CMOS will be 
   cleared when the system is powered ON.

3. Allow the system to count the system memory.  The system will then 
   indicate that the EISA CMOS memory has been lost.

4. Power OFF the system, and move SW1-4 back into the OFF position.

5. Power the system ON and enter the System Setup program, by pressing 
   <F2> during system POST.

6. Ensure that the Boot Device field is set to "Try Floppy First."

7. Exit System Setup choosing Save, Exit, and Update Flash BIOS.

8. A message will appear providing instructions to complete the BIOS 
   update. 

9. When the BIOS update has completed, remove the BIOS update diskette 
   from the floppy drive, and reconfigure the system using System Setup and 
   the EISA Configuration Utility.  For more information see the Manhattan P 
   and V Series User's Manual (P/N 003027-001).