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CP/M, DR-DOS
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.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
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 memory by segmentation the memory areas, harddisk storage up to 16 mbyte was also possible. CP/M 86 managed max. 1 mbyte main memory without segmentation and stood into competition with MS DOS. CP/M 68 K
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was designed for 68 K RISC CPUs and not able for multi-user or multitasking.DR-DOS website 2007 | DR DOS 3.41, Digital Research, Welcome to installation | DR DOS 3.41, Select the storage drive | DR DOS 3.41, Select the country and keyboard layout |
DR DOS 3.41, Search for previous DR DOS copies | DR DOS 3.41, Default installation directory | DR DOS 3.41, Search path configuration | DR DOS 3.41, Additional options |
DR DOS 3.41, Current settings | DR DOS 3.41, Installation finished | DR DOS 3.41, Command line | DR DOS 3.41, Command line |
DR-DOS 7.02, Caldera DR-OS installation program | DR-DOS 7.02, Release Notes | DR-DOS 7.02, End User License Agreement | DR-DOS 7.02, Name and Serial Number |
DR-DOS 7.02, Select Software to install | DR-DOS 7.02, Configure DR-DOS setup | DR-DOS 7.02, Installation ready to begin | DR-DOS 7.02, Installation is complete |
DR-DOS 7.02, Restart now or view boot files | DR-DOS 7.02, Command line | DR-DOS 7.02, Command line | DR-DOS 7.02, Command line |
DR-DOS 7.02, NetWars game | DR-DOS 7.02, NetWars game |
Versions
--- - 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
Weblinks
[ Unofficial CP/M Web site ][ Digital Research Website ][ DR-DOS ][ Gabys CP/M Homepage ][ DR-DOS ][ shaneland ]Free Disk Cleaner For Pc
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