Eight CPUs from the 1970s and 1980s, sharing one 64K bus, an Apple-1 style monitor on the front, and a paper tape station. Open it in your browser and poke around.

I picked up a boxed Timex Sinclair 2068 that wouldn’t boot. An oscilloscope, a BackBit tester, and a fresh Z80 later, it was running. Then I ported Charles Bond’s 1981 maze algorithm from the C64 to Sinclair BASIC.