I am seriously thinking of scanning and loading all this stuff into a
web site and making it public domain if anyone is interested.
As far as I can tell the 68008 and the 68901 and the 4501s are still
all available. The rest of it is all 74 series TTL except for one 555
timer chip.
My design, was heavily influenced and inspired by the Motorola design
note but is clearly significantly different and original.
The main problem with building another one or more would be finding a
viable Apple II prototyping board that is big enough.
The 68008 software is assembly language in the AT&T syntax that was
accepted by the BSD UNIX system at work and the public domain 68K
assembler for CP/M I used on my Z/80 coprocessor (Softcard, then
Applicard). Yes, the 68008 co-existed with the Z/80 cards...
I no longer have an Apple II. In order to build or play with one of
these a bus extender is very valuable because you'll wear out your
backplane slot with too many insertions and extractions otherwise...
Jim, I'd be very interested in your design. It is considerably more
capable than the 68008 card I acquired several years ago! That card
had a single 8-bit port, with handshaking--pretty slow communication.
I think it would be a great idea to scan in the documentation and make
it available on the web.