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    AST RESEARCH, INC.        TECHNICAL BULLETIN # 1072                2-15-95

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    				USE OF CMD640X.SYS WITH AST SYSTEMS

    PROBLEM
    Use of the CMD640X.SYS driver may cause sporadic errors and other
    non-destructive failures in otherwise functional systems.

    CAUSE
    Unstable driver.  The functionality and purpose of this driver are obsolete.

    SYSTEMS AFFECTED
    AST PART NUMBER AND DESCRIPTION

    501680-001     2  BMS P90/1003C AA STIN 16MB256K
    501533-304     C  BMS P-60/423W 8MB/1MB FRA 230V
    501534-204     C  BMS P-90/423W 8MB/1MB FRA 230V
    501534-404     4  BMS P/90  543W 8MB/1MB   230V FRA
    501701-404     B  BMS P/75  543W 8MB/1MB   230V FRA
    501701-504     B  BMS P/75  1003W 16MB/1MB 230V FRA
    501533-307     C  BMS P-60/423W 8MB/1MB GER 230V
    501534-207     C  BMS P-90/423W 8MB/1MB GER 230V
    501534-407     4  BMS P/90  543W 8MB/1MB   230V GER
    501701-407     B  BMS P/75  543W 8MB/1MB   230V GER
    501701-507     B  BMS P/75  1003W 16MB/1MB 230V GER
    501533-308     C  BMS P-60/423W 8MB/1MB ITL 230V
    501534-208     C  BMS P-90/423W 8MB/1MB ITL 230V
    501534-408     4  BMS P/90  543W 8MB/1MB   230V ITL
    501701-408     B  BMS P/75  543W 8MB/1MB   230V ITL
    501701-508     B  BMS P/75  1003W 16MB/1MB 230V ITL
    501533-309     C  BMS P-60/423W 8MB/1MB NOR 230V
    501534-209     C  BMS P-90/423W 8MB/1MB NOR 230V
    501534-409     4  BMS P/90  543W 8MB/1MB   230V NOR
    501701-409     B  BMS P/75  543W 8MB/1MB   230V NOR
    501701-509     B  BMS P/75  1003W 16MB/1MB 230V NOR
    501533-310     C  BMS P-60/423W 8MB/1MB SPN 230V
    501534-210     C  BMS P-90/423W 8MB/1MB SPN 230V
    501534-410     4  BMS P/90  543W 8MB/1MB   230V SPN
    501701-410     B  BMS P/75  543W 8MB/1MB   230V SPN
    501701-510     B  BMS P/75  1003W 16MB/1MB 230V SPN
    501533-311     C  BMS P-60/423W 8MB/1MB SWD 230V
    501534-211     C  BMS P-90/423W 8MB/1MB SWD 230V
    501534-411     4  BMS P/90  543W 8MB/1MB   230V SWD
    501701-411     B  BMS P/75  543W 8MB/1MB   230V SWD
    501701-511     B  BMS P/75  1003W 16MB/1MB 230V SWD
    501533-302     3  BMS P-60/423W 8MB/1MB UK 230V
    501533-303     3  BMS P-60/423W 8MB/1MB INTL 230V
    501534-202     3  BMS P-90/423W 8MB/1MB UK 230V
    501534-203     3  BMS P-90/423W 8MB/1MB INTL 230V
    501534-402     4  BMS P/90  543W 8MB/1MB   230V UK
    501534-403     4  BMS P/90  543W 8MB/1MB   230V INT
    501701-402     B  BMS P/75  543W 8MB/1MB   230V UK
    501701-502     B  BMS P/75  1003W 16MB/1MB 230V UK
    501533-313     3  BMS P-60/423W 8MB/1MB DUT 230V
    501534-213     3  BMS P-90/423W 8MB/1MB DUT 230V
    501534-413     4  BMS P/90  543W 8MB/1MB   230V DUT
    501701-413     B  BMS P/75  543W 8MB/1MB   230V DUT
    501701-513     B  BMS P/75  1003W 16MB/1MB 230V DUT
    501533-312     C  BMS P-60/423W 8MB/1MB LAT 115V
    501534-212     C  BMS P-90/423W 8MB/1MB LAT 115V
    501534-412     4  BMS P/90  543W 8MB/1MB   115V LAT
    501701-412     B  BMS P/75  543W 8MB/1MB   115V LAT
    501701-512     B  BMS P/75  1003W 16MB/1MB 115V LAT
    501533-305     C  BMS P-60/423W 8MB/1MB SWF 230V
    501534-205     C  BMS P-90/423W 8MB/1MB SWF 230V
    501534-405     4  BMS P/90  543W 8MB/1MB   230V SWF
    501701-405     B  BMS P/75  543W 8MB/1MB   230V SWF
    501701-505     B  BMS P/75  1003W 16MB/1MB 230V SWF
    501533-306     C  BMS P-60/423W 8MB/1MB SWG 230V
    501534-206     C  BMS P-90/423W 8MB/1MB SWG 230V
    501534-406     4  BMS P/90  543W 8MB/1MB   230V SWG
    501701-406     B  BMS P/75  543W 8MB/1MB   230V SWG
    501701-506     B  BMS P/75  1003W 16MB/1MB 230V SWG
    501533-401     3  BMS P-60/733C 16MB/1MB 115V
    501534-301     3  BMS P-90/733C 16MB/1MB 115V
    501533-404     C  BMS P-60/733C 16MB/1MB FRA 230V
    501534-304     C  BMS P-90/733C 16MB/1MB FRA 230V

    SOLUTION
    AST recommends that users remove the CMD640X.SYS reference from their
    CONFIG.SYS file.  Functionality provided by this driver has been incorporated
    in the AST system BIOS.  Configuration of advanced features can be achieved
    with the Admin Tools Utility program.  The file name is 775033.EXE.
    These utilities may be found on various on-line services including:  AST's BBS
    (817) 230-6850, in the "Systems" file area.  AST's BBS supports modem speeds
    up to 28.8k bps.  The above file will also be posted on:

    CompuServe
    Go ASTSUPPORT

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

    For further information on the Administrator Tools, see Software Bulletin
    # 0202 located on AST's BBS, in the "Systems" file area.