hostap_cs on 486 - SWSUPPORT0 error

[Drew]

This is hostap 0.1.3 on Debian on a 486/33Mhz:

There are 2 Senao 200mW cards in a dual pcmcia isa reader (sbi-d2p) and 
the cards both work fine for awhile, until after several hours it gets 
this error:

hostap_cs: wlan1: resetting card
wlan1: Interrupt, but SWSUPPORT0 does not match: FFFF != 8A32 - card
removed?s
wlan : hfa384x_cmd - timeout - reg=0xffff
host p_cs: first command failed - is the card compatible?
host p_cs: wlan1: resetting card

The first time, it locked the machine up, the second time it didn't.

Any ideas?