If one wants to do coin mining on a 68K Amiga, the only practical way I can think of is to use one or more USB ASIC coin miners with a compatible USB Amiga card (Thylacine, Subway, Deneb). It's not 'cheating' to do this, as the coin mining software would be 68K code running on the machine, accessing the ASIC(s). It's the only practical way the Powerbook G4 I'm writing this on could mine coins, as a 1.67Ghz processor is also too slow for that sort of thing. This to my mind is the best path to take with 68K or PPC Amigas regarding virtual coin mining.