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From: romkey@ftp.UUCP (John Romkey)
Newsgroups: comp.protocols.tcp-ip.ibmpc
Subject: 3COM 3c503 (Etherlink II) -- info needed.
Message-ID: <8711190347.AA00818@spdcc.COM>
Date: Wed, 18-Nov-87 21:43:04 EST
Article-I.D.: spdcc.8711190347.AA00818
Posted: Wed Nov 18 21:43:04 1987
Date-Received: Sat, 21-Nov-87 15:33:53 EST
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The 3C503 uses the National Semiconductor DP8390 Ethernet controller
chip; the 3C501 uses something completely different - it's been long
enough that I can't remember what the chip is even called. I think
it's the LANCE chip. I try to forget as much about writing my 3C501
driver as I can. If you send me your US Mail address I can send you a
document about programming the 3C501, but it won't help any in dealing
with the 3C503. The two boards are completely different.

You can get specs on the DP8390 from your local National distributor,
but you'll need more than that to program the 3C503. You may be able
to get technical specs on the 3C503 from your 3COM rep, under
non-disclosure.  FTP Software has a 3C503 version of PC/TCP (our
commercial PC/IP) in beta test now, and if the stuff we got from 3COM
isn't under non-disclosure, I can give you a copy of that, too.

I don't know of any 3C503 drivers that are available as part of the
publically available PC/IP.
				- john romkey
				 ftp software