    AST RESEARCH, INC.        TECHNICAL BULLETIN # 1716          05/13/97

    TITLE:  High Temperature Alert in DPT Event Log

    ISSUE

       The DPT PM3224 SCSI Controller may report High Temperature Alerts
       in the DPT Event Log while the system is operating within the
       tolerances of the Ambient Temperature specification.

       This issue applies to the following systems: 501502, 501503,
       501830, 501832, and 503076.

    BACKGROUND

       The threshold setting for the temperature logic on the DPT PM3224
       controller has been set too low.

    ACTION

       To resolve the issue, upgrade the BIOS and firmware on the DPT
       controller to v3.DS/7H7.

       WARNING: AST highly recommends that all system drives be
       backed-up prior to upgrading the DPT BIOS and firmware.

       The BIOS and firmware on the PM3224 are not "flashable";
       therefore, you must replace the EPROM.

       Contact an AST Authorized Service Center and request a
       replacement DPT SCSI Controller with BIOS v3.DS and firmware
       v7H7.

       Replacement P/Ns:

       234067-004 for system P/Ns 501830, 501503, 501502.

       234440-005 for system P/Ns 501832, 503076.

       NOTE: DPT BIOS v3.DS requires a newer version of the DPTDDL.SYS
       driver for DOS. Storage Manager v1.kn contains the new DPTDDL.SYS
       driver for BIOS v3.DS. This driver is contained in the following
       files:

          12794037.EXE
          12794038.EXE
          12794039.EXE
          12794310.EXE

       The files mentioned above are available from any of AST's
       On-Line! services as follows:

          AST WWW Site:  http://www.ast.com
          AST On-Line! BBS*:  See IB0001.TXT
          CompuServe:  GO: ASTFORUM
          Prodigy:   JUMP: ASTSUPPORT

          * Refer to IB0001.TXT for a list of AST's
            international BBS numbers.

          To decompress this file, create a temporary directory
          on your hard drive, copy the downloaded file to that
          directory, and run the file.

       AST recommends that all DPT SCSI drivers be updated after
       upgrading the DPT BIOS and firmware, regardless of operating
       system used.

       For additional information, see Software Bulletin # 0308, which
       is available on any of AST's On-Line! services.

    NOTES

       N/A

    TAN 000300EB

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