Paul wrote:Are these CP/M versions emulating a 8080 or z80 processor?
The Z80 is code compatible with 8080 code.
CP/M itself as supplied by Digital Research should run on either a 8080, 8085 or a Z80.
However, system specific code (the low level input/output code written for a Z80 system) and some applications were written for Z80 CPU's and as such will not run on 8080 systems or 8085 systems.
I assume these QL CP/M packages supplied the correct low level system specific code.