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AST RESEARCH, INC.          TECHNICAL BULLETIN # 1147              4-19-95

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   INTEL ETHEREXPRESS PRO/100 PCI CAUSES ERROR MESSAGE ON BRAVO MS 4/XXX


PROBLEM

When using an Intel EtherExpress Pro/100 ethernet adapter in a Bravo MS 4/100t 
system, when loading EMM386 or using the Memory Browser in MSD, the system 
will display the error message:

[12.03] The computer has a memory problem and needs to be serviced.

CAUSE

When an application attempts to write to the memory space used by the Intel 
Pro/100 adapter, the adapter generates a Target Abort signal to the PCI bus 
controller.  The PCI bus controller sees this signal and generates a system 
error signal.  The system error signal is redirected to the NMI line which 
finally generates the parity error message displayed on the screen.

SYSTEMS AFFECTED
AST PART NUMBER AND DESCRIPTION

501442-001                             BRAVO MS 4/100

SOLUTION

Run the ICU program that comes with the computer, and look for the address 
space used by the Intel PCI Pro/100 Adapter.  By INCLUDING that memory area, 
(see below) current versions of EMM386 will not attempt to write to that 
memory area, and will also create a UMB or EMS page frame OVER that memory 
area and eliminate the error message. 

C:\DOS\EMM386.EXE I=C800-C9FF  (The shared area may differ form yours)