CP/M, DR-DOS Operating System

352 words [ 26 Screenshots ] [ 21 Versions ] [ 6 Weblinks ] - Last update: 2016-08-29 Page created: 2004-03-04 [SB]



CP/M, DR-DOS

Digital Research Logo 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. The strengths of CP/M are the high portability on all sorts of hardware configurations. Base functions were programmed hardware-independently, depending on the aimed platform the special feature were only programmed additionally.

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. This year the operating system was used approximately on 200,000 microcomputers in more than 3,000 different configurations. 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. CP/M 86 managed max. 1 mbyte main memorie without segmentation and stood into competition with MS DOS. CP/M 68 K was designed for 68 K RISC CPUs and not able for multi-user or multitasking.



Screenshots

CP/M, DR-DOS Operating System screenshot 1CP/M, DR-DOS Operating System screenshot 2CP/M, DR-DOS Operating System screenshot 3CP/M, DR-DOS Operating System screenshot 4
DR-DOS website 2007DR DOS 3.41, Digital Research, Welcome to installationDR DOS 3.41, Select the storage driveDR DOS 3.41, Select the country and keyboard layout
CP/M, DR-DOS Operating System screenshot 5CP/M, DR-DOS Operating System screenshot 6CP/M, DR-DOS Operating System screenshot 7CP/M, DR-DOS Operating System screenshot 8
DR DOS 3.41, Search for previous DR DOS copiesDR DOS 3.41, Default installation directoryDR DOS 3.41, Search path configurationDR DOS 3.41, Additional options
CP/M, DR-DOS Operating System screenshot 9CP/M, DR-DOS Operating System screenshot 10CP/M, DR-DOS Operating System screenshot 11CP/M, DR-DOS Operating System screenshot 12
DR DOS 3.41, Current settingsDR DOS 3.41, Installation finishedDR DOS 3.41, Command lineDR DOS 3.41, Command line
CP/M, DR-DOS Operating System screenshot 13CP/M, DR-DOS Operating System screenshot 14CP/M, DR-DOS Operating System screenshot 15CP/M, DR-DOS Operating System screenshot 16
DR-DOS 7.02, Caldera DR-OS installation programDR-DOS 7.02, Release NotesDR-DOS 7.02, End User License AgreementDR-DOS 7.02, Name and Serial Number
CP/M, DR-DOS Operating System screenshot 17CP/M, DR-DOS Operating System screenshot 18CP/M, DR-DOS Operating System screenshot 19CP/M, DR-DOS Operating System screenshot 20
DR-DOS 7.02, Select Software to installDR-DOS 7.02, Configure DR-DOS setupDR-DOS 7.02, Installation ready to beginDR-DOS 7.02, Installation is complete
CP/M, DR-DOS Operating System screenshot 21CP/M, DR-DOS Operating System screenshot 22CP/M, DR-DOS Operating System screenshot 23CP/M, DR-DOS Operating System screenshot 24
DR-DOS 7.02, Restart now or view boot filesDR-DOS 7.02, Command lineDR-DOS 7.02, Command lineDR-DOS 7.02, Command line
CP/M, DR-DOS Operating System screenshot 25CP/M, DR-DOS Operating System screenshot 26
DR-DOS 7.02, NetWars gameDR-DOS 7.02, NetWars game

Versions

Date - Version
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
1982 - CP/M 3.1, 16-bit operating system, DR DOS Basis
1985 - DOS-Plus 1.0 was introduced
198? - DOS-Plus 1.2
1986 - DOS-Plus 2.01
1988, May - DR DOS 3.31 was introduced, first MS-DOS compatible version
1988 - DR DOS 3.32
1988 - DR DOS 3.40
1989, Jan. - DR DOS 3.41 OEM Release
1990, May - DR DOS 5.0 (leopard) ready, with Viewmax
1991 - DR DOS 5.11
1991, Sept. - DR DOS 6.0 ready, Superstor, Delwatch, NetWare Lite support, DOS prompt task switcher (Taskmax)
1993, Dec. - DR DOS 7.00 (Novell DOS), network support, memory management
1997, Feb. - DR DOS 7.01 (OpenDOS)
1998, Sept. - DR DOS 7.02 (OpenDOS)
1999, March - DR DOS 7.03 (OpenDOS)
2004, March - DR DOS 8.0, FAT 32 and large harddisks are supported, can be installed to a ROM or FLASH-disk (embedded systems), various DOS programs, multitasking (with 386 CPU or better), DPMS memory manager for 286/386/486/Pentium, data storage compression, EMM386 memory manager