To paraphrase Emperor Palpatine…
“And now, witness the power of this fully ARMED and OPERATIONAL … Z80 computer!”
OK, so running at the current 40kHz system clock, it’s got more milliamps than megaflops — but at least it’s running properly on one board (CPU, memory, controls, and LEDs all together.)
More about the milliamps to come: it’s currently drawing over half an amp(!) at 5V — almost all of which is going into keeping the 74LS245s warm. The parts should be in tomorrow to give it a quick “Energy Star” upgrade.
Click the image for a larger version. (The dials on the right are, from top to bottom, address-high-byte, address-low-byte, and data.)