Z80 computer update

It ALMOST lives. I'm currently working on the IO interface, which is just some latches and buffer logic with two ports of 8 LEDS and 8 switches. This "terminal" is connected via rainbow ribbon to a socket on the IO board:

The board is yet to be wired, which will be done in the style of the memory board.

The system as of writing looks like this:

The card labeled "memory card" is the memory card, and likewise with the others. You probably guessed that, though. I haven't made/bought the PSU yet, so it is powered by a variable psu, adjusted with a DMM. The ribbon is supposed to go to an angled front plate.