It looks like what I?m looking for from CSPI (aka CSP, Inc.) is the ?SuperKit? board
support, function, and RPC library for the SuperCard SC-3XL and SC-4XL, along with their
documentation.
There are mentions of it in the Wayback Machine for
http://www.cspi.com/ and the vendor is
still around, but there?s obviously no mention anywhere on the current web site of this
stuff, and I doubt contacting their support would do any good?
Does anyone have more detail? Or do I have to reverse-engineer any ROMs that happen to be
on these boards?
? Chris