I’m doing something similar right now. The eZ80 is a modern implementation of the Z80 that runs 50MHz, is pipelined like a modern CPU, and runs most instructions in a single cycle rather than 5-10 like the Z80. It’s also 24 bit in both data and address. So it’s a lot easier to program and a LOT faster than the original.
The 68000 is also a processor from a simpler time that is easy to source and still being made. There’s a CMOS version with a static core too so you can spin down the frequency to 1Hz and it will still work.
The 68000 is also a processor from a simpler time that is easy to source and still being made. There’s a CMOS version with a static core too so you can spin down the frequency to 1Hz and it will still work.