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    AST RESEARCH, INC.          TECHNICAL BULLETIN # 1110               3-24-95

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    			    PREMMIA SE AND 16MB SIMM PROBLEM UNDER OS/2

    PROBLEM

    The Premmia SE server may lock up while running OS/2 with error Trap 0002,
    during high volume data transfers.The system may also experience intermittent
    parity errors.

    CAUSE

    SIMM module, part number 104000-195, contains Toshiba DRAM.  The Toshiba part
    numbers are:

    	THM 364020S-70
    	THM364020SG-70

    Additional reference number found on actual DRAM chip:

    Toshiba DRAM part number TC5117400J-70

    PARTS AFFECTED
    AST PART NUMBER AND DESCRIPTION

    501159-004     SIMM Kit 32MB x36 70ns/72pin JEDEC
    520131-004     16MB 70ns PRM SIMM CFG

    SOLUTION

    If your Premmia SE system has been upgraded to 2 or more 16MB SIMMs
    (P/Ns THM 368020SG-70 and THM 364020S-70), and your system is experiencing
    problems running OS/2 or intermittent parity errors, replace the SIMMs with
    SIMM Kit P/N 501159-004.