CP/M (mostly 2.2) as the host operating system. See also Amstrad CP/M Plus character set CPMulator CP/NET and CP/NOS Cromemco DOS, an operating system independently derived from CP/M Eagle Computer IMDOS List of machines running CP/M MP/M MP/NET and MP/NOS Multiuser DOS Pascal/MT+ SpeedStart CP/M 86-DOS References Further reading (NB. This PBS series includes the details of IBM's choice of Microsoft DOS over Digital Research's CP/M for the IBM PC) External links The Unofficial CP/M Web site (founded by Tim Olmstead) - Includes source code Gaby Chaudry's Homepage for CP/M and Computer History - includes ZCPR materials CP/M Main Page - John C. Elliott's technical information site CP/M Internals - CP/M internals MaxFrame's Digital Research CP/M page ftp://ftp.uni-bayreuth.de/pub/pc/caldera/cpm2.2/ How to transfer CP/M floppy disks CP/M variants Microcomputer software Disk operating systems Digital Research operating systems Discontinued operating systems Floppy disk-based operating systems Free software operating systems History of computing 1974 software Formerly proprietary software