Find here my summary of CP/M [emphasis: AMSTRAD PCW aka JOYCE] pages
Not all of the pages are translated to English, sorry
![[CP/M]](../../gif/CPM_will_nev_die.gif)
Find here a compilation of excerpts refering to the 8 bit operation system CP/M found in the web.
| Wikipedia | Operating System Documentation Project | Computer Museum Munich German |
From Wikipedia: CP/M was an operating system originally created for Intel 8080/85 based microcomputers by Gary Kildall of Digital Research, Inc.
Initially confined to single tasking on 8-bit processors and no more than 64 kilobytes of memory, later versions of CP/M added multi-user variations, and were migrated to 16-bit processors.
CP/M stood for either Control Program/Monitor or Control Program for Microcomputers
From Operating System Documentation Project: Gary A. Kildall developed for the company Intel the PL/M programming language for the Intel 8008, derived of PL/I in 1973. In the same year he developed the operating system CP/M (Control Program for Microprocessors) in PL/M. It was the first operating system for Intel based computers. Kildall set up with his wife Dorothy McEwen the company DR Inc. (Digital Research Incorporation) in 1976. At first CP/M was designed by DR only as a pure file manager program for 8-bit x86 computer and sold by Intel. In 1976 there was a CP/M Bios for Intel 8080 computers. At this time CP/M was the dominating operating system on the market and used by the most computer manufacturers on theyre computers to. In 1981 dozens of computer machine types competed under various operating systems like CP/M in numerous variations. Additional there were proprietary operating systems and UNIX variations. CP/M was used in 1985 worldwide approximately 4 million times in different versions. CP/M was renamed to DR-DOS after few other releases in 1988.
CP/M was available in many different versions for numerous application purposes. Technical further advancements of processors and the trend towards multi-user systems also were included in the development. MP/M II brought additional commands, multi-user ability with programs like CONSOLE, DISKRESET, SPOOL, SHED and ATTACH. CP/M plus (CP/M 3.0) could address 1 mbyte of main memorie by segmentation the memory areas, harddisk storage up to 16 mbyte was also possible.
| 1973 | CP/M 1.0 | |
| --- | CP/M 1.4 | |
| 1979 | CP/M 2.0 | |
| --- | CP/M 2.2 | served as the base for MS/DOS |
| 1982 | CP/M 3.0 | 8-bit operating system |
From the Computer Museum Munich:
| 1973 | Gary Kildall programmiert das erste standardisierte Betriebssystem CP/M (Control Program for Microcomputers) für den Prozessor Z80 von Zilog. Als Entwicklungssprache verwendet er PL/M, welches wiederum von PL/I abgeleitet war. Im gleichen Jahr setzt er auch eben jenes PL/M auf den Intel 8008 um. |
| 1974 | Gary Kildall setzt sein Betriebssystem CP/M auf den neuen Intel-Prozessor 8080 um und beginnt im gleichen Jahr, CP/M kommerziell zu vermarkten. |
| 1976 | Gary Kildall gründet Digital Research und lizenzsiert sein eigenes Betriebssystem CP/M. Die Versionen CP/M 1.3 und 1.4 erscheinen. |
| 1979 | Digital Research bringt CP/M 2.0 (CP/M-80). Diese Version sollte die Grundlage für das spätere MS-DOS bilden. |
| 1983 | CP/M 3.0, die Grundlage für das spätere DR-DOS, kommt auf den Markt. |