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1991-02-05
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Number: A3TH090790U604
Subject: Proteon 16-bit Cards That Do Busmastering
Date: February 1, 1991
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GENERAL
INFORMATION: Listed below, are Proteon 16-bit ISA cards that do
busmastering:
P-1347, P-1346, P-1345, P-1344
These cards will not work in an EISA machine (or any other
machine) with over 16MB of RAM with NetWare 386 v3.1 unless
the STARTUP.NCF contains the following setable;
"SET AUTO REGISTER MEMORY ABOVE 16 MEGABYTES = OFF."
The reason for this parameter is that NetWare v3.1
arbitrarily assigns DMA and busmastering memory addresses
anywhere it likes. These cards will not see memory
addresses above 16MB.
The NetWare 386 v3.1 README file states the following:
"EISA computers: If your EISA file server contains more
than 16MB of RAM, do not use 8-bit PC or 16-bit AT boards in
the file server if the board uses busmastering or DMA.
Check with the manufacturer for more information."
This can apply to any file server that contains more than
16MB of RAM, not just with EISA machines. If you use 8-bit
or 16-bit AT cards, the above "SET" command must be present
in the STARTUP.NCF or these cards will not work in file
servers with over 16MB of RAM. This will force the DMA or
busmastering memory assignments made by the operating system
to occur below the 16MB RAM location.
(X) This information was verified by Engineering.