ether=irq,base_addr,mem_start,mem_end
This shouldn't be necessary for many cards, however. An example would look like:
ether=11,0x360
Please Note: The last two parameters can be left out most (if not all) of the time. Also, linux will only recognize the first ethernet card in a system. To get it to see two, you must use a LILO boot: parameter (not a module parameter) similar to:
boot: linux ether=0,0,eth1
(For more information about using more than one ethernet card, see the Multiple-Ethernet mini-HOWTO.)