One more bit of info to go with that last message.
>From /proc/pci:
Bus 3, device 14, function 0:
Ethernet controller: DEC DC21142 (rev 48).
Medium devsel. Fast back-to-back capable. IRQ 9. Master Capable. Latency=165. Min Gnt=20.Max Lat=40.
I/O at 0xec00.
Non-prefetchable 32 bit memory at 0xfedff800.