(Come to think of it, my father’s PDP-8 had core memory cards that I vaguely remember seeing as a kid. The sheer wiring required for 4KB was ridiculous.) Now back to [Brek]’s project.

Like the DEC PDP-8, this is a 12-bit machine, but instead of the diode-transistor logic of the DEC, the substantially smaller Q2 uses a simple NMOS approach. Also, the DEC has core memory ...