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From: terry@spcvxb.spc.edu (Terry Kennedy, Operations Mgr.)
Subject: Re: help - multiple enet cards in P100
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References: <4c0slu$1gi6@darwin.nbnet.nb.ca>
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Organization: St. Peter's College, US
Date: Sat, 30 Dec 1995 09:16:24 GMT
Message-ID: <1995Dec30.041624.1@spcvxb.spc.edu>
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In article <4c0slu$1gi6@darwin.nbnet.nb.ca>, tony_mcneill@miti.nb.ca (Tony McNeill) writes:
> during bootup, dmesg says that the 3com is set to 250 irq 15. I read
> that bsdi defaults the card to irq 15 but I had set it to 270 and irq
> 10 using 3c5x9cfg.exe in dos. Is the message correct or is it lying
> to me?
The 3C509's DOS config utility settings for IRQ, I/O port, "maximum modem
speed" and connector type are ignored by BSD/OS (except that if you talk to
a card with the config utility, you need a hard reset or power cycle to make
the card visible to BSD/OS).
The default kernel only supports 1 ISA 3c5x9 (note that ef1 and ef2 in the
generic kernel config file are "at eisa?"). You can modify your kernel config
to support more cards. I have a number of boxes that run with 2, and I've
played with as many as 4 at one time.
You shouldn't need to specify an interrupt in the config file unless your
motherboard is taking an interrupt that the driver wants to use. An example
is motherboards with PS/2 mouse support, which usually steals IRQ 12.
3C509's are configured in order of ascending hardware Ethernet address.
There's a "mailbox port" used for configuration - I think it's 100. If you
have anything at that port, all bets are off.
Terry Kennedy Operations Manager, Academic Computing
terry@spcvxa.spc.edu St. Peter's College, Jersey City, NJ USA
+1 201 915 9381 (voice) +1 201 435-3662 (FAX)