Fixing a Timex Sinclair 2068 and Porting the Bond Maze

I picked up a boxed Timex Sinclair 2068 that wouldn&rsquo;t boot. An oscilloscope, a BackBit tester, and a fresh Z80 later, it was running. Then I ported Charles Bond&rsquo;s 1981 maze algorithm from the C64 to Sinclair BASIC.