AFAIK all 10/100 NICs are CardBus type, i.e. PCI style - so not hardware compatible w/ A600/1200 (100BaseTx doesn't make sense w/o PCI).
You'll have to look out for older cards that use old PCMCIA 2.x (ISA style) host connection. If they're compatible with NE2000 or 3C50x you've got a chance to find a driver.
