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AST RESEARCH, INC.         TECHNICAL BULLETIN # 1109               3-24-95

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	    PREMMIA SE AND 32MB SIMM PROBLEM UNDER WINDOWS NT 3.1 & 3.5


PROBLEM

With 2 or more 32MB SIMMs installed in the Premmia SE system, Windows NT 3.1 
and 3.5 aborts to a blue screen with the following messages:

	Hardware Malfunction
	NMI: Parity check / Memory Parity Error
	NMI: EISA IOCHKERR board 6
	The system has halted 
	Kernel Debugger Using:  Com 2 port 0xeF8, Baud rate 19200  

CAUSE

SIMM module, part number 104000-204, contains Toshiba DRAM.  The Toshiba SIMM 
part numbers are:

	THM 368020SG-70 
	THM 364020S-70

Additional reference number found on actual DRAM chip is a Toshiba DRAM part 
number 

	TC5117400J-70

PARTS AFFECTED
AST PART NUMBER AND DESCRIPTION

501159-005     SIMM Kit 64MB x36 70ns/72pin JEDEC
520131-005     32MB 70ns PRM SIMM CFG

SOLUTION

If your Premmia SE system has been upgraded to 2 or more 32MB SIMMs 
(P/Ns THM 368020SG-70 and THM 364020S-70), and your system is experiencing 
problems with Windows NT 3.1 or Windows NT 3.5, replace the SIMMs with SIMM 
Kit P/N 501159-005.