=

AST RESEARCH, INC.         TECHNICAL BULLETIN # 1318                12-1-95

=


	 Manhattan P5090 System With 3COM EtherLink III Products


PROBLEM

3COM Etherlink III PCI/ISA/EISA cards on the Manhattan P5090 system may lose 
network binding after 2 hours or less of operation.


CAUSE

1. Under BIOS 1.10 (p/n 905547-039), the number of "packet receive buffers" 
   may gradually build up and once they reach their limit, the network 
   connection may be interrupted and broken.  
2. This problem may also be caused by improper termination.  
3. Prior to BIOS 1.12, the PCI to the EISA Bridge (PCEB) register 40H bit 2 
   as also set improperly.


SOLUTION

BIOS 1.12 (p/n 905547-310) fixes this problem with 3COM's EtherLink III 
products.  File 05547310.EXE is available for download from AST's BBS
(817) 230-6850.  AST's BBS supports modem speeds up to 28.8k bps.  
The above file will also be posted on: 

CompuServe 
Go ASTSUPPORT

AST Worldwide Web Site
http://www.ast.com

For additional information on the Manhattan P/V BIOS, see Software 
Bulletin # 0178.


SYSTEMS AFFECTED
AST PART NUMBER AND DESCRIPTION

501502-XXX   Manhattan P5090  All Models