On Wed, Nov 2, 2016 at 7:20 PM, Jon Elson <el...@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.