Just going from memory here, so take this with a grain of salt till I can
get home and check it...
The "processor interconnect kit" was four 12566 (GRD TRU +/-) cards, two in
each cpu, and two special cables to go between them. If you can find the
right edge card connectors (or scavenge the connectors from other less
important HP cables), the special cables can be fabricated.
You wouldn't be able to run 2000/Access, as that requires the IOP firmware,
which to my knowledge was only officially produced for the 2100 cpu and the
21mx M SERIES ONLY. There is talk among some here about trying to port the
microcode for the IOP firmware to make it run on the E or F 21MX's. Then you
could run Access on the cpu's you have... oh.. and, don't forget.. there is
one hard to find thing needed for every single version of TSB ever
produced... the 3 card set called a 12920/12921 mux. It's what all the user
terminals were connected to. THAT seems to be the real devil to find. I do
have a working set, perhaps copies could be fabricated from scratch? Way
beyond my expertise. Or, if the source for Access or E or C, C', F is around
perhaps the code could be modified to work with other mux's that HP made.
Jay West