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- Newsgroups: comp.os.linux
- Path: sparky!uunet!super!becker
- From: becker@super.org (Donald J. Becker)
- Subject: Re: 3c501 cards
- Message-ID: <1992Dec14.184134.4910@super.org>
- Sender: news@super.org (USENET News System)
- Nntp-Posting-Host: metropolis
- Organization: IDA Supercomputing Research Center
- References: <724336546.AA26409@remote.halcyon.com>
- Date: Mon, 14 Dec 1992 18:41:34 GMT
- Lines: 43
-
- In article <724336546.AA26409@remote.halcyon.com> Jim.Corbett@f35.n152.z1.fidonet.org (Jim Corbett) writes:
- > > I have recently come into a rather large quantity of
- > > 3c501 cards
- > > (~30). I would be happy to sell them for $20 plus
- > > shipping. Buy 5 or
- > > more and get a discount! I realize that currently the
- > > 3c501 drivers
- > > haven't been released even in alpha yet, but I have
- > > been given to
- > > understand that they are in progress.
- >
- >I am not familur with that card, what is it, 8 bit, 16 bit?
- >
- > * Origin: Intermittent Connection, Eugene OR 503-344-9838 (1:152/35)
- >
-
- It's a first generation 8 bit ethernet card using the SEEQ 8001 chip.
-
- I would not recommend using a 3c501 for several reasons:
-
- The 3c501 is far too braindamaged to use. It can only do one thing
- at a time -- while you are removing one packet from the single-packet
- buffer it cannot receive another packet, nor can it receive a
- packet while are loading a transmit packet. This was fine for
- a network between two 8088-based computers where processing a packet
- took 10's of msecs. (10Mb/sec was faster than the IBM-PC bus!)
- but in an environment where machines are expected to send and
- receive streams of back-to-back packets the 3c501 just cannot
- function.
-
- If he is referring to my pre-alpha 3c501 driver -- it's not finished,
- its low on my list of priorities, and I'll never release it
- beyond alpha when I do finish it because of the performance problems.
-
- Documentation on the 3c501 is a problem. 3Com no longer prints the
- 3c501 documentation. They have a limited number of old copies, but
- even those have a warning on the front that they (3Com) didn't have
- their usual technical documentation on the board.
-
- --
- Donald Becker becker@super.org
- Supercomputing Research Center
- 17100 Science Drive, Bowie MD 21114 301-805-7482
-