Date: Mon, 13 Apr 1998 09:28:40 -0700 From: Tom Wadlow <wadlow@tw.com> To: jmb@FreeBSD.ORG Cc: freebsd-hackers@hub.freebsd.org Subject: Re: A strange problem Message-ID: <199804131628.JAA02252@hotspur.tw.com>
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Apologies for a typo in the message below. It is a 3C589D card.
--Tom
Tom Wadlow wrote:
> I have three laptops, all running FreeBSD 2.2.5. An NEC 6030H, an NEC
> 6030X and an NEC 5080X. I have installed the PAO extensions for 2.2.5
> on all three. I am trying to get a PCMCIA Ethernet card to work on them.
> I have two choices of cards: the Megahertz CC10BT/2 and the 3Com 3C509D.
>
> The two 6030 machines work just fine. I plugged the card in, and it
> was correctly detected. It didn't work the first time, but once I
> shifted it to work off IRQ 11 it was happy. Pinging from it to another
> machine on the same network returned times of < 1ms. All is well.
>
> The 5080X, however is a different story. I can find IRQs which cause the
> PAO code to recognize the device. In fact, it works on IRQ 11, like the others.
> But pinging from that machine to another host on the local network starts with
> a random time of several hundred or thousand milliseconds, and decreases by
> 10ms with every subsequent ping. When zero is reached, it starts back at the
> original number and does it again. After a large number of pings, it chokes.
>
> My first thought was that this was an IRQ conflict. I'd seen this a long time ago
> with the PAO boot floppy for 2.2.1. So I exhaustively checked all IRQs. Same
> thing. It either failed (IRQ in use by something else), or it worked as described
> above.
>
> My next thought was that the PCIC IRQ was wrong in some way. So I exhaustively
> checked the combination of PCIC and board IRQs. Same thing. I also set the PCIC
> IRQ to 0, which apparently only allows the board to be detected on boot. Same problem.
>
> I've stripped everything else out of the kernel to see if there are conflicts there.
> No luck. At this point, I'm out of ideas. Do you have any?
>
> Thanks for any help you can provide. --Tom
>
>
>
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