I asked about this on port-i386, but didn't get much help.  Maybe
there are more people with relevant experience on this list:

I've got an i386 running -current from Dec. 1, and it has two 4-port
TULIP cards in it.  Each card works on the first port, and none of the
others.  The two "first ports," de0 and de4, are using different
IRQ's, and each one shares its IRQ with another (non-working) de?
device.  When I try to ifconfig any of the other six ports, the
machine hangs solid:  Doesn't respond to any keyboard interrupts,
including caps lock, etc.

Is anybody willing to work with me in solving this problem?  Thanks.

Chris

-- 
-----------------------------------------------------cjones@math.montana.edu
Chris Jones                                          cjones@honors.montana.edu
           Mad scientist at large                    cjones@nervana.montana.edu
"Is this going to be a stand-up programming session, sir, or another bug hunt?"