i made 256 bytes of memory
connecting all the layers would be a bit easier if i could hold a keybind to make intersections of the new wire and the wires already there into wire crossings instead of just making them connected together (basically doing xor instead of or for each pixel the line is on)
also it seems like if i have a single wire that is very big, all placing/deleting gets very laggy even when far away from that very big wire, to me it seems like you might be recalculating every wire every time a pixel is changed (i haven't seen the source code so not 100% sure)