@kenshirriff BTW that looks like the video board - which used 14 shift memory ICs (7 bit ASCII, two chips per bit).

This is a memory card from the d2200 recreation I’m currently working on. It’s not engineered for the power hungry 1405s which I’ll need to emulate with a daughter board.

Decoder board is already done, processor board is at the layout stage. I’m adding as many blinkenlights as I can fit on 🙂