https://github.com/ancientcomputing/rc2014
Small computer central
https://medium.com/@formix/my-z80-linux-development-stack-2a4f32727fa2
https://raw.githubusercontent.com/inaciose/asm80/
dd if=zt80mon.z80.bin of=zt80mon4_.z80.bin bs=1 count=2047
dd if=zt80mon.z80.bin of=zt80mon4_.z80.bin bs=1 skip=1024 count=2047