You're way ahead of me. I did find a disassembler for the Super Nintendo
(SNES) called DSFX131.zip. Apparently the SNES also used the 65C816. Next
time I see one at Goodwill I'm going to buy it and open it up. Maybe it has
some useful parts.
I was able to run DSFX on the Vulcan binary, but assy language is gibberish
to me.
I'll offer a nice Apple IIc+ or Apple High Speed SCSI card to anyone who can
disassemble the Vulcan EPROM and modify it to work with other drives. I can
supply the binaries to work on, and I'll ship the prize free to the winner.
If you can do this, but want something else, let me know. Perhaps I have it.
-Paul