6 Mar
2002
6 Mar
'02
8:53 a.m.
I _think_ I have some 7400-series chips from 1967, but
no earlier. They'd
be in a PDP-8/L if, in fact, I am remembering correctly.
I don't know when the 7400 line was kicked off, but I could believe late
1967.
Indeed... I am looking for some (and not expecting to
find any) to
build a replica of a DW08, DEC's pre-TTL TTY interface made from W-series
and R-series logic.
Frankly, I think you will spend less time and resources just finding an
original DW08. The 700 series chips are out there if one looks carefully,
but so are the two DEC boards.
William Donzelli
aw288(a)osfn.org