operating system

CP/M (Control Program for Microcomputers[3]) was an Operating System for computers used in the 1970s and early 1980. Originally, it supported up to 64 kb of main memory. It was command-line based, and came before MS-DOS.

A screenshot of CP/M-80.
DeveloperDigital Research, Inc. / Gary Kildall
Written inPL/M
Working stateHistoric
Source modelOriginally closed source, now open source[1]
Latest release3.1 / 1983[2]
PlatformsIntel 8080, Intel 8085, Zilog Z80, Intel 8086, Motorola 68000
Kernel typeMonolithic kernel
user interface
Command line interface
LicenseOriginally proprietary, now BSD-like
Official websiteDigital Research official CP/M page

Sources change

  1. CP/M collection is back online with an Open Source licence The Register, November 26, 2001
  2. Mann, Stephen (15 August 1983). "CP/M Plus, a third, updated version of CP/M". Info World. 5 (33): 49ff. ISSN 0199-6649.
  3. Newton, Harry (2000). Newton's Telecom Dictionary. New York, NY: CMP Books. pp. 228. ISBN 1-57820-053-9.