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AST RESEARCH, INC.          TECHNICAL BULLETIN # 1383                1-3-96

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    Premmia GX P/90 Corrupt Packets/Phantom MAC Addresses with Microsoft 
			     Client for Netware


PROBLEM

The Premmia GX P/90 system may send corrupt packets/phantom MAC 
addresses while using Microsoft Client for Netware from within Win 95.  


CAUSE

The Bus Timer selection in Windows 95, for the AMD ethernet adapter, is set 
to "default (six micro seconds)" at the time of setup.
The integrated AMD adapter used on the Premmia GX P/90 is susceptible to 
bus timing issues between itself and other bus mastering devices that occupy 
the motherboard, such as the floppy controller.


SOLUTION

If corrupt packets or phantom MAC addresses are seen, AST recommends 
BUS timing value settings be changed to eleven micro seconds, by doing the 
following:

1. From the Control Panel, Network, select AM2100/Properties/Advanced.

2. Change the BUS TIMER from Default to 11 micro seconds for optimum 
   performance on the bus, when using the MS Network module.



SYSTEMS AFFECTED
AST PART NUMBER AND DESCRIPTION

501457-XXX      Premmia GX P/90