I've done it in software using an Amiga500 with an MTec Viper/030 clocked at 50MHz using 40ns simms rated for 133MHz. Running at full speed no less. The key, don't use any screenmode past 4 colors and avoid overscanning. I've also done software mp3 playing using a Derringer030 overclocked from 50MHz to 66MHz. The Derringer was a much nicer accel (features wise), but the MTec Viper was definately built better.
:pint:
