12 Jan
2019
12 Jan
'19
6:46 p.m.
Ben said
I am building a TTL computer from 1973 as I said
earlier. This is to
compiete
with the PDP 11 and the PDP 8. Major design features a single memory bus
and character I/O (10 bits) and word/character addressing.
It sounds like you are building a machine similar to the EDUC-8, which was a hardwired
machine built from 96 TTL ICs and unashamedly based on the PDP-8. Here's the front
cover of
Electronics Australia magazine, December 1974 showing it in front of a Straight 8 at
Fairfax
publishing, Sydney. The project construction articles started a few months earlier in
August,
pipped by the Mark-8 by just a month. The construction articles are still available as a
small
book.
http://www.surfacezero.com/g503/uploads/612/EA_Dec_1974_cover.jpg
Steve.
