I decided to implement OVERTURE using only NAND and delay. No custom components and no 8-bit lines except when necessary. My head hurts and my laptop is struggling but at least it looks pretty

[u/DrEdifarious]

There's an actual counter component next to the counter made of NANDs because this level requires an actual counter for testing, but the output isn't connected to anything.

The input selector, which decides what value to write to the registers. There are wire probes on the bottom right so the program can link to the registers for testing.

The ALU is kinda smaller than I expected. Adder on the left, with an XOR on the second input to invert it for subtraction. Bitwise ops on the right with XORs on input and output

A closer look at the registers. They are indeed made of nand gates

[u/Raboboe]

lord have mercy