I had some pointers on getting an A600/A1200 online for next to nothing. I know some people would like this serial solution for An A500-type machine, but the load on the CPU and the max. speed of the com port would make it impossibly slow. For A500's and the like, sourcing one of those few network cards that were available would probably be a better choice. For big box machines, the options are greater still.
My guide:
http://amigaworld.net/modules/newbb/viewtopic.php?topic_id=26191&forum=25
