ZSDOS provides replacements for two of the three parts of a CP/M system: BDOS and CPR. The existing BIOS should work perfectly with these replacements, and the

ZSDOS provides replacements for two of the three parts of a CP/M system: BDOS and CPR. The existing BIOS should work perfectly with these replacements, and the BIOS is the only part that is machine specific. IOW it should run just fine, unless the simulator is written to hook into CP/M itself. I have my own z80 based system emulator where the BIOS is basically breakpoints into host code, and I didn't need to change anything to switch from DR's OS to ZSDOS.