Bunsen, I'd say the Alpha Syntauri was the the most advanced synth to run on an 8-bit personal computer, but even in it's day it was only a poor man's Prophet (Profit?) Five. The Mountain Computer cards make other sounds than square waves a'la ALF and C-64, but the wave tables consist of 256 8-bit samples each, so they are pretty gritty. Given musical talent like Herbie Hancock, it would make wonderful noise. HH owned and played one, and in fact he noodled around on mine once. I'm hoping some archaeology will uncover that floppy.
It seems all A][ to Mac programs are for ProDOS. My hard disks and 800K disks are all DOS, and can't be converted without copying first file-by-file to 5" floppies which ProDOS can read. The Syntauri disks are copy-protected DOS 3.3. ProDOS Convert utility won't work on them. Is there any way other than serial transfer to get from DOS 3.3 to Mac? Otherwise, everything has to be converted to / from ProDOS on 800K floppies which a Mac can read under System 7 or 8. Is there a Mac XModem program which runs on a modern USB-equipped Mac? Is there AppleTalk for DOS?
The RAM Disk card is indeed a Slinky. I think it will be a useful addition to my setup, and the "new" //e is all cleaned up and running with a new PSU. Here's hoping the synth hardware which has been on a shelf in the garage for 20 years is salvageable, too.