Unknown DEC indicator panel

Eric Smith spacewar at gmail.com
Wed Nov 2 22:39:37 CDT 2016

On Wed, Nov 2, 2016 at 7:20 PM, Jon Elson <elson at pico-systems.com> wrote:

> Yup, in fact, I think you could turn a PDP-5 into a PDP-8 with about 25
> boards
> (one tray of system building blocks) and some wire.  Mostly, add an
> electronic
> instruction counter register and alter the instruction fetch logic to stop
> accessing
> location zero.  That's the only difference visible to the programmer, I
> think.

And changing the interrupt location, which IIRC was 0001 on the PDP-5.

More information about the cctech mailing list