It´s not that I want to use the 100Mbit on my a1200, but I´ve got a laptop rigth beside of it, so it would be nice to use 100Mbit on my laptop, and still being able to use the card in the amiga.
By the way, the bandwidth of the a1200 PCMCIA-port is 65536 bits/sec. and this is due to hardware in the to the port, not the processor.