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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