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 was shipped with the disk models of the Amstrad CPC and the DDI-1 disc drive on one or two System Disks.
CP/M versions relating to the Amstrad CPC
MicroDOS
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).
Videos
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 PocketTerm") via serial port.
- CP/M Introduction
{{#ev:youtube|BQq6ad9F3Xk|450}}
- CP/M Programming Environment
{{#ev:youtube|YQNHg1XuFR4|450}}
- Changing CP/M's RAM Size
{{#ev:youtube|DJvT-9Gykm8|450}}
- CP/M Application Demos
{{#ev:youtube|_19ks4I5XwE|450}}