On 23 December 2016 at 05:45, drlegendre . <drlegen...@gmail.com> wrote: urs was no exception, and I thank you for it. > > For one, I hadn't known that CP/M was written originally to the 8080.. I'd > always assumed it originated on the Z80.
There are only 8080 instructions in CP/M, not a single Z80-specific instruction. CP/M came about around 1974, the Z80 in 1976. All the CP/M computers I used had a Z80, but that's just shows what was popular at the time.