    AST RESEARCH, INC.         TECHNICAL BULLETIN #0757                  06-09-92

                         AST PREMIUM 486/33 WITH SQL SERVER

    PROBLEM:       SQL Server version 4.2 hangs during installation or log-on
                   while using the system administrators facility (SAF) with a
                   486DX processor card.  This error occurs either in an ISA or
                   EISA system.

    CAUSE:         The problem has been isolated to the current version of BIOS.
                   If CMOS byte 41, bit 4 is high (co-processor disabled), SQL
                   Administrator will hang.

    AFFECTED
    SYSTEMS:       486DX/25 or 33 ISA or EISA.

    SOLUTION:      The following are two solutions available until a new version
                   of BIOS is released:

                   1) Using Debug type in the following instructions to determine
                      the status of the byte 41:

                      o 70 41    ;point to byte 41
                      i 71       ;get the byte

                   Then adjust the value so that bit 4 is low (example: F8h
                   becomes E8h).  Write the new value back to CMOS using the
                   following instructions:

                      o 70 41     ;point to the byte
                      o 71 xx     ;xx=new value in hex

                   2) Temporarily install a 386DX or SX processor board. Boot and
                      go into setup.  Tab down to the field for Enable/Disable
                      Co-processor.  Set to enable.  Save and  exit.  Then,
                      reinstall the 486 processor board.