I subscribed to Byte magazine when I was in high school and college, and I owned this book. When I graduated with a BSEE degree in 1985, I designed my own Z80 computer but used this book as a reference. However, just before I started buying parts, I realized a 68000 microprocessor wasn't that much more expensive, so I went that route and built it. I never did anything with the it, but it was a fun exercise.
I had some "seed" 68K code to work with, and then I augmented it heavily. There was a monitor program that I added features to, including adding an assembler and disassembler. But other than getting the monitor and memory test programs working, adding a clock, and a few small utilities, I never built it up to do anything useful.
