Haveing done two commercial designs with the part I have most of that
including a copy of the MARK-8 article. Never like the part it was just
on the cusp of 60 ICs for s system using it or 150 ICs or so to do it
I've got a hugely simpler design that uses the 8008:
http://www.jkearney.com/tiny8demo/
The display devices are slightly anachronistic, but the state and address
decoding in this design is pretty slick, I think.
Jim