> I've seen this problem on a NetFinity 5000 with 1.6_BETA3.
>
> I thought Jason's commit in rev 1.10 of sys/dev/pci/if_pcn.c had
> fixed this (which I pulled up to -1-6 as rev 1.9.4.1), but obviously
> not.
>
> Try booting the machine on 1.6_RC1 without the cable plugged in, and
> then plugging the cable in after boot.  It is still likely to fail,
> but it may not panic immediately.

Wow. If I boot up with the cable unplugged, it boots up fine and the phy
gets all the possible media types:

pcn0 at pci1 dev 5 function 0: AMD PCnet-PCI Ethernet
pcn0: Am79c971 PCnet-FAST rev 5, Ethernet address 00:60:94:57:3b:b9
pcn0: interrupting at irq 14
nsphy0 at pcn0 phy 1: DP83840 10/100 media interface, rev. 1
nsphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto

Then I can plug the cable in and configure the interface, and it
appears to work fine!  What else can I do to help debug this problem?

Thanks,
	Rick