Putting the CPU card aside for a while, I put some effort into the front panel card this weekend. First pass is already done, which is record time for a first pass. I guess all the work on the CPU card translated pretty well into basic layout and library stuff, which I could reuse.

SCELBI Front Panel PCB

Next up will probably be the input card, which has a ton of complexity for a card with only 11 chips. Hopefully I can get a first pass of that card done in two weekends.