After being inspired by Ben Eater's excellent video series on building a CPU on a breadboard, I decided to build my own. It uses a minimal number of chips, so physically it's much smaller than Ben's version. You can find the details here if you are interested. Cheers, Warren
P.S. Thanks for the people who answered my questions here, which helped in the design and build.
P.S. Thanks for the people who answered my questions here, which helped in the design and build.