Through the ether, Laine Stump formed these words:
!: At 02:03 PM 2/1/00 -0600, Tim D. Bandy wrote:
!: >Hey,
!: >I updated my patch to dev/cardbus/if_ex_cardbus.c (changed one line to
!: >make the 3c575c entry more like the 3c575b, and am no longer having
!: >device timeout problems.  However, I still have no link.  Do you have
!: >the exphy device attaching, or are you able to use the ukphy?
!: 
!: This is what I get:
!: 
!: ex0 at cardbus0 dev 0 function 0: 3Com 3c575B-TX Ethernet
!: ex0: interrupting at 11
!: ex0: MAC address 00:50:04:5c:32:e7
!: tqphy0 at ex0 phy 0: 78Q2120 10/100 media interface, rev. 3
!: tqphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
!: ex0: supplying EUI64: 00:50:04:ff:fe:5c:32:e7

Well, there is some progress.  I did not have the tqphy device in my
kernel config for some odd reason, but it is there now, so the phy
device now is recognized as tqphy0.
I am still getting "no carrier".  However, I can ifconfig the device,
assign it an ip address, and ping it.  I just can't ping out.  Any
idea where I should look?