* urban@boquist.net [2001-02-28 13:59:52]
> /netbsd: ex0 at cardbus0 dev 0 function 0: 3Com 3c575B-TX Ethernet
> /netbsd: ex0: MAC address 00:50:04:5e:0c:4b
> /netbsd: ex0: can't allocate download descriptors, error = 12
> 
> This exact card worked just fine with -current about a year ago.

Memory allocation failure (errno 12 = ENOMEM).  Free some memory
(quitting a web browser is usually a good way) and then re-insert the
card.  It happens to a Xircom card I have as well (tlp driver).

dme.