Coffee. You can sleep when you're dead.

I stayed up all night in late December 2008 and soldered for a few hours. The data lines are yellow, address lines are green. Power lines are red. Ground lines are black (ok, a couple are blue). You are looking at the wiring of the CPU, ROM, 74LS138 Address Decoder, and the 7404 inverter. With programmed ROM, this computer should be able to run and step through a program. Also wired are a HALT momentary switch, and a RESET momentary switch.