I just came into ownership (well, I've have it a
couple of days) of a
Supermac Technology Enhance card that was an internal upgrade for a Mac128K.
Sounds like a tough nut to crack, and these old accelerator played and
important part of the early mac history. I have a pair of mac SE with Levco
accelerators, and haven't had much luck finding drivers or much
information, EXCEPT that they specifically were the fastest mac for nearly
a year. ;(
Try the mac driver museum, and make sure to ask on some of the "general"
vintage mac support areas.
http://members.xoom.com/macdrivers/accel.html