    AST RESEARCH, INC.        TECHNICAL BULLETIN # 1647          12/19/96

    TITLE:  3COM 3C90X and XMS Error Message

    ISSUE

       When the Bravo MS/MS-T system is warm booted after the network
       drivers are loaded, the system will either hang or produce the
       following error message:

          "Himem.sys has detected unreliable XMS memory
           at address xxxxxxx"

       This issue affects various systems regardless of manufacturer.

    BACKGROUND

       This issue only applies when the 3C90X.COM driver  dated 5-29-96
       and various versions of LSL are loaded into high memory.

    ACTION

       Users experiencing this issue should download the following file
       from 3COM's Web site: 3C90XN.EXE. The file is located at
       www.3com.com. Select Customer Support, then Software Library, and
       double-click on Latest Adapter Files.

       This file is the install utility for the 3C90X.COM family of
       products. After the file has been extracted, go to the NWCLIENT
       subdirectory and replace your existing 3C90X driver with this
       one.

    NOTES

       Previous versions of the driver would not "shutdown" the card
       after a warm boot was initiated. The new driver allows the card
       to accept a warm boot without any adverse affect to the XMS memory.

    TAN 001516PS

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