M220B (PDP-8/I) schematics available

From: Ethan Dicks <erd_6502_at_yahoo.com>
Date: Thu Jul 10 15:46:00 2003

--- Tony Duell <ard_at_p850ug1.demon.co.uk> wrote:
> > > Is the 7474 a 'dog'?
>
> I can remember replacing many 7474s in the RK11-C when I was getting that
> going. Oh, and a 7482 adder, which was impossible to find [1]...

One of these days, I need to get my RK11-C up and working (I have a
working RK11D that's been used recently - I've had the -C since 1984
and haven't ever had the occasion to power it on).

I should probably build a KM-11 clone first.

-ethjan
Received on Thu Jul 10 2003 - 15:46:00 BST

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