I beeen working on 8048 Homebrew Simulation. Originally, it was a Z-80 simulation. I wrote this in 1997 as a way for people to experience programming a computer with toggle switches. The Coprolite Z-80 Homebrew Computer was a bit steep to get running for most people. In 2001 I got a bunch of surplus 8048s and built the 8048 Development System. I have so many that I’ll stick to this particular piece of coprolite. I converted the machine code over to 8048. Just ignore the fact that the 8048 does not directly address 64k. 🙂 Have fun.