CP/M is an operating system running on different computers with Intel 8080 and compatible CPUs. It was the most popular operating system for micro computers, before the 16 bit age started successfully with the IBM PC and MS-DOS. Most computer systems running CP/M were based on a Z80 CPU.
It was developed by Gary Kildall of Digital Research, Inc. as a private project from 1974 on, named Control Program/Monitor. When it became commercial software in November 1977 it was renamed to Control Program for Microcomputers.
CP/M versions relating to the Amstrad CPC
MicroDOS (Microcomputer Disc Operating System) is a CP/M clone made in East Germany (GDR) for computers of the brand Kleincomputer (KC). It was available for the KC Compact. Unfortunately it is not 100% compatible with CP/M.
CP/M on ROM
Graduate Software offered a service to copy your original CP/M package to a ROM (thus easier access and more disk space).
These four introduction videos show the basic usage and programming environment of CP/M on a modern Altair 8800 simulator connected to a terminal emulator ("Vince Briel PockeTerm") via serial port. (These videos are made by the person who sells these Altair simulators, so you can ignore the small sales pitch at the end of each video.)
- CP/M Introduction
- CP/M Programming Environment
- Changing CP/M's RAM Size
- CP/M Application Demos