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AST RESEARCH, INC.          TECHNICAL BULLETIN # 1275                8-1-95

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        DPT PM3224 DOES NOT WORK WITH IRQ 2 (9) IN SOME PCI YSTEMS


PROBLEM

When a DPT PM3224 PCI DAC is installed in the top PCI slot (closest to the 
CPU board) in a Manhattan P (non DAC model with p/n 202620-002 system 
board), the following occur:

1.  The system hangs after the DPT PM3224 BIOS is initialized.
2.  No SCSI devices are shown
3.  The system does not complete a boot to be able to load the operating 
     system.  
4.  The number 98 is displayed on the 4 digit display.  
5.  The 9th LED on the PM3224 is lit.  


CAUSE

There is an IRQ conflict between the PM3224/90 and IRQ 2 in some PCI systems. 


SYSTEMS AFFECTED
AST PART NUMBER AND DESCRIPTION

501502-XXX      MANHATTAN P 5090


SOLUTION

This problem is fixed with the latest Manhattan P/V BIOS revision 1.10 or 
higher (AST part number 905547-039), and EISA Configuration Utilities 
revision 1.07 or higher (AST part number 911371-038). 

Obtain the following part numbers by calling AST Technical Support at 
(800) 717-1278 or downloading the files from AST's BBS.

File 05547039.EXE MANHATTAN P/V flash BIOS revision 1.10, and
File 11371038.EXE EISACU for AST PCI/EISA based systems revision 1.07 
can be found on AST's BBS (817) 230-6850.  
AST's BBS supports modem speeds up to 28.8k bps.  The above files will also 
be posted on: 

CompuServe 
Go ASTSUPPORT

AST Worldwide Web Site
http://www.ast.com

For additional information on the Manhattan P/V flash BIOS, see Software 
Bulletin 0178D.  
For additional information on the EISACU for AST PCI/EISA based systems, 
see Software Bulletin 0211B.

The above mentioned bulletins are located in the SBS library of AST's BBS.