I just bought an m6805, burned a shiny new KNOPPIX_V3.3-2004-02-16-EN.iso, put it in the drive and rebooted.

It got to APM, then stopped cold. I added the noapm cheatcode, it still stopped. Tried failsafe, still no go.

I haven't given up, and I'll post back here if I get it to work.