21 Feb
2014
21 Feb
'14
7:08 p.m.
Another mystery board in my junk box... this one should definitely be
for a PDP-8 because it has no signals on the F connector fingers.
I've googled all the numbers on it and can't figure out what it's for.
It has a Z80 CPU, some RAM and ROM, and a lot of bus drivers. There's
an empty 40-pin socket at U1, don't know if it had another Z80 or
what.
http://s1181.photobucket.com/user/DrCharlesMorris/media/PDP-8/P02-21-14_205…
The output(?) connectors are unique at least to me:
http://s1181.photobucket.com/user/DrCharlesMorris/media/PDP-8/P02-21-14_205…
Looks like four pin plugs would seat in those sockets (they aren't
coaxial).
Any clues?
thanks
Charles
