NVSRAM-based replacement for 24 kiloword PDP-12 core memory expansion normally accomplished with an expansion chassis and up to 6 MM8I modules. This design is potentially compatible with PDP-8i machines, although the memory timing signals are slightly different. Requires appropriate Memory Extension Control module (MC12 for the PDP-12).
Flat-flex cable version of the W021 intended for use with the MM24I
First attempt at PCB design, intended to simplify probing a PDP backplane with an oscilloscope
