Practical Electronics CHAMP/Tangerine Microtan 65

From: Brian Chase <vaxzilla_at_jarai.org>
Date: Fri May 23 03:16:00 2003

On Thu, 22 May 2003, Tony Duell wrote:

> > Since you mention it, I had been thinking about
> > designing and building a processor from scratch from
> > TTL devices. I am slowly accumulating TTL chips as I
>
> It's not that hard. There have been several commercial 12 or 16 bit
> processors built using appoximately 100 TTL packages (perhaps with some
> small PROMs as control store too). Designing such a processor is not a
> difficult job either...

I'd really like to design and build a PDP-8 clone, since the real
ones command such hefty prices on eBay. I've mostly given up on
getting my own 8/F or 8/M.

It's a simple enough architecture that it could be done without
too much trouble. And I'd have the benefit of being able to make
use of the exisiting library of PDP-8 software. The difficult
parts are a) knowing where to even begin, b) finding the time to
figure out how to do it, and c) finding the time to actually do it.

-brian.
Received on Fri May 23 2003 - 03:16:00 BST