SMT PDP-8 (was Re: group buy for homebrew CPUs?)

[woodelf]

Josef Chessor wrote:

> On a related note, but a separate question, does anyone actually have
> the wiring schedule for a PDP-8/S backplane?  A long time ago, I was
> willing to start constructing flip chip modules that made up a PDP-8,
> but I could never find the wiring schedule for the backplane online so
> that I could truly build the computer.

I think if you are building a replica is to design your own Flip/Chips
and build a clean design from scratch. A PDP-8/S does not look that
impressive, I know I seen one in the flesh once,as compared to a
PDP-8/e. If you go with 20 I/O pins, (and sneaky pcb pinout )a simple
GAL (SMT) could make up a generic card and be re-programmed for
what ever logic you want.