11 Jun
2003
11 Jun
'03
8:21 a.m.
--- Andreas Freiherr <Andreas.Freiherr(a)Vishay.com> wrote:
Ethan,
there's a M720 circuit diagram on microfiche in my collection. I'll try
to take a picture of the fiche viewer's screen with my digital camera,
but it's a bit difficult due to illumination varying widely across the
screen. In addition, the newer rev level is printed blurry on the film.
I'll try again tonight, if I get out of the office in time.
That's OK. Al Kossow sent me a copy. It's in his scanned docs for the
PDP-12.
As far as I can remember from looking at the fiche
yesterday, there are
three SN7400N chips and one SN7460N in the circuit, together with four
transistors, a couple of diodes and passive parts. Doesn't look too
complicated.
Nope... it looks pretty straightforward. All I need are some 7460s. :-)
Thanks for looking, though.
-ethan