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Text of the page (random words):
run in 16 kb if necessary more commands were built into the command line shell making ms dos somewhat faster and easier to use on floppy based computers although one of the first peripherals for the ibm pc was a softcard like expansion card that let it run 8 bit cp m software 67 infoworld stated in 1984 that efforts to introduce cp m to the home market had been largely unsuccessful and most cp m software was too expensive for home users 68 in 1986 the magazine stated that kaypro had stopped production of 8 bit cp m based models to concentrate on sales of ms dos compatible systems long after most other vendors had ceased production of new equipment and software for cp m 69 cp m rapidly lost market share as the microcomputing market moved to the ibm compatible platform and it never regained its former popularity byte magazine at the time one of the leading industry magazines for microcomputers essentially ceased covering cp m products within a few years of the introduction of the ibm pc for example in 1983 there were still a few advertisements for s 100 boards and articles on cp m software but by 1987 these were no longer found in the magazine later versions of cp m 86 made significant strides in performance and usability and were made compatible with ms dos to reflect this compatibility the name was changed and cp m 86 became dos plus which in turn became dr dos zcpr edit zcpr 70 the z80 command processor replacement was introduced on 2 february 1982 as a drop in replacement for the standard digital research console command processor ccp and was initially written by a group of computer hobbyists who called themselves the ccp group they were frank wancho keith petersen the archivist behind simtel at the time ron fowler charlie strom bob mathias and richard conn richard was in fact the driving force in this group all of whom maintained contact through email zcpr1 was released on a disk put out by sig m special interest group microcomputers a part of the amateur computer club of new jersey zcpr2 was released on 14 february 1983 it was released as a set of ten disks from sig m zcpr2 was upgraded to 2 3 and also was released in 8080 code permitting the use of zcpr2 on 8080 and 8085 systems zcpr3 71 was released on 14 july 1984 as a set of nine disks from sig m the code for zcpr3 could also be compiled with reduced features for the 8080 and would run on systems that did not have the requisite z80 microprocessor in january 1987 richard conn stopped developing zcpr and echelon asked jay sage who already had a privately enhanced zcpr 3 1 to continue work on it thus zcpr 3 3 was developed and released zcpr 3 3 no longer supported the 8080 series of microprocessors and added the most features of any upgrade in the zcpr line features of zcpr as of version 3 included shells aliases i o redirection flow control named directories search paths custom menus passwords on line help zcpr3 3 also included a full complement of utilities with considerably extended capabilities while enthusiastically supported by the cp m user base of the time zcpr alone was insufficient to slow the demise of cp m east bloc cp m derivatives edit cp m derivate scp running on an east german robotron pc 1715 cp j version 2 21 running on an elwro 804 junior a number of cp m 80 derivatives existed in the former east bloc under various names including scp single user control program de scp m cp a 72 cp kc cp l cp ksob cp z microdos bcu880 zoaz os m tos m zsdos m os cos psa dos psa csoc csos cz cpm and others 73 74 there were also cp m 86 derivatives named scp1700 cp k and k8918 os 74 they were produced by the east german veb robotron and others 74 73 72 legacy edit a number of behaviors exhibited by microsoft windows are a result of backward compatibility with ms dos which in turn attempted some backward compatibility with cp m the drive letter and 8 3 filename conventions in ms dos and early windows versions were originally adopted from cp m 75 the wildcard matching characters used by windows and are based on those of cp m 76 as are the reserved filenames used to redirect output to a printer prn and the console con the drive names a and b were used to designate the two floppy disk drives that cp m systems typically used when hard drives appeared they were designated c which survived into ms dos as the c command prompt 77 the control character z marking the end of some text files can also be attributed to cp m 78 various commands in dos were modelled after cp m commands some of them even carried the same name like dir ren rename or type and era erase in dr dos source code releases edit in 1997 and 1998 caldera released some cp m 2 2 binaries and source code under an open source license also allowing the redistribution and modification of further collected digital research files related to the cp m and mp m families through tim olmstead s the unofficial cp m web site since 1997 79 80 81 after olmstead s death on 12 september 2001 82 the distribution license was refreshed and expanded by lineo who had meanwhile become the owner of those digital research assets on 19 october 2001 83 84 1 85 in october 2014 to mark the 40th anniversary of the first presentation of cp m the computer history museum released early source code versions of cp m 86 hobby and retro computing edit as of 2018 update there are a number of active vintage hobby and retro computer people and groups and some small commercial businesses still developing and supporting computer platforms that use cp m mostly 2 2 as the host operating system see also edit 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 edit a b gasperson tina 2001 11 26 cp m collection is back online with an open source licence walk down memory lane the register archived from the original on 2017 09 01 a b mann stephen 1983 08 15 cp m plus a third updated version of cp m infoworld 5 33 49ff issn 0199 6649 a b c sandberg diment erik 1983 05 03 personal computers the operating system in the middle the new york times a b c markoff john 1994 07 13 gary kildall 52 crucial player in computer development dies the new york times a b shustek len 2016 08 02 in his own words gary kildall remarkable people computer history museum archived from the original on 2016 12 17 a b c kildall gary arlen 2016 08 02 1993 kildall scott kildall kristin eds computer connections people places and events in the evolution of the personal computer industry manuscript part 1 kildall family archived from the original on 2016 11 17 retrieved 2016 11 17 newton harry 2000 newton s telecom dictionary new york new york usa cmp books pp 228 isbn 1 57820 053 9 oldcomputers com compupro 8 16 archived from the original on 2016 01 03 retrieved 2011 07 13 cole maggie 1981 05 25 gary kildall and the digital research success story infoworld palo alto california usa 3 10 52 53 issn 0199 6649 freiberger paul 1982 07 05 history of microcomputing part 3 software genesis infoworld palo alto california usa 4 26 41 issn 0199 6649 the official book for the commodore 128 since cp m was one of the first operating systems a large number of hobbyists hackers and esoteric programmers purchased cp m computers and began to write programs for themselves it was offered on the free market in the form of floppy disks distributed at computer user groups cp m the dos that would not die 80 micro magazine magazine cover august 1986 retrieved 2021 07 19 cp m emulators for dos www retroarchive org cpm luis basto archived from the original on 2016 07 09 retrieved 2016 07 06 davis randy december 1985 january 1986 written at greenville texas usa the new nec microprocessors 8080 8086 or 8088 pdf micro cornucopia 27 bend oregon usa micro cornucopia inc pp 4 7 issn 0747 587x archived pdf from the original on 2020 02 11 retrieved 2020 02 11 a b cp m operating system manual pdf a b c cp m plus cp m version 3 operating system programmers guide pdf 2 ed digital research april 1983 january 1983 archived pdf from the original on 2016 11 25 retrieved 2016 11 25 a b cp m plus cp m version 3 operating system user s guide a b c d e kildall gary arlen june 1975 cp m 1 1 or 1 2 bios and bdos for lawrence livermore laboratories an excerpt of the bdos plm file header in the pl m source code of cp m 1 1 or cp m 1 2 for lawrence livermore laboratories lll c p m b a s i c i o s y s t e m b i o s copyright c gary a kildall june 1975 b a s i c d i s k o p e r a t i n g s y s t e m b d o s copyright c gary a kildall june 1975 a b c d e kildall gary arlen january 1980 the history of cp m the evolution of an industry one person s viewpoint dr dobb s journal vol 5 no 1 41 pp 6 7 archived from the original on 2016 11 24 retrieved 2013 06 03 the first commercial licensing of cp m took place in 1975 with contracts between digital systems and omron of america for use in their intelligent terminal and with lawrence livermore laboratories where cp m was used to monitor programs in the octopus network little attention was paid to cp m for about a year in my spare time i worked to improve overall facilities by this time cp m had been adapted for four different controllers in 1976 glenn ewing approached me with a problem imsai incorporated for whom glenn consulted had shipped a large number of disk subsystems with a promise that an operating system would follow i was somewhat reluctant to adapt cp m to yet another controller and thus the notion of a separated basic i o system bios evolved in principle the hardware dependent portions of cp m were concentrated in the bios thus allowing glenn or anyone else to adapt cp m to the imsai equipment imsai was subsequently licensed to distribute cp m version 1 3 which eventually evolved into an operating system called imdos cp m builtin commands discordia org uk archived from the original on 2008 04 12 retrieved 2009 01 28 a b c d e f g h brown david k strutynski kathryn wharton john harrison 1983 05 14 tweaking more performance from an operating system hashing caching and memory blocking are just a few of the techniques used to punch up performance in the latest version of cp m system design software computer design the magazine of computer based systems vol 22 no 6 littleton massachusetts usa pennwell publications pennwell publishing company pp 193 194 196 198 200 202 204 issn 0010 4566 oclc 1564597 coden cmpda ark 13960 t3hz07m4t retrieved 2021 08 14 7 pages section 4 cp m dynamic debugging tool cp m 2 2 archived from the original on 2015 06 17 retrieved 2014 08 29 cp m dynamic debugging tool ddt user s guide pdf digital research 1978 1976 archived pdf from the original on 2014 10 28 retrieved 2014 08 29 shael 2010 06 26 2009 12 09 ddt utility archived from the original on 2015 12 08 retrieved 2014 08 29 whole earth software catalog archived from the original on 2015 07 04 lieber eckhard von massenbach thomas 1987 cp m 2 lernt dazu modulare systemerweiterungen auch für das alte cp m c t magazin für computertechnik part 1 in german heise verlag 1987 1 124 135 lieber eckhard von massenbach thomas 1987 cp m 2 lernt dazu modulare systemerweiterungen auch für das alte cp m c t magazin für computertechnik part 2 in german heise verlag 1987 2 78 85 huck alex 2016 10 09 rsm für cp m 2 2 homecompuer ddr in german archived from the original on 2016 11 25 retrieved 2016 11 25 johnson herbert r 2009 01 04 cp m and digital research inc dri history www retrotechnology com archived from the original on 2008 08 20 retrieved 2009 01 28 warren jim april 1976 first word on a floppy disk operating system dr dobb s journal menlo park california usa 1 4 5 subtitle command language facilities similar to decsystem 10 digital research 1978 cp m pacific grove california usa digital research oclc 221485970 a b kathryn betty strutynski monterey herald obituary 2010 06 19 archived from the original on 2021 08 14 retrieved 2021 08 10 via legacy com at dri kathryn watched excitedly as gary completed work on the first computer operating system known as cp m kathryn stayed on at dri and continued to write code for new versions of cp m she worked on cp m 2 0 and cp m plus she made many contributions to cp m 2 2 the largest money spinner for dri including a background spooler for printing simple multi tasking and system guides in fact in one book kathryn is called the mother of cp m 2 2 for the hundreds and hundreds of hours she put in with dave brown john pierce bob silberst ei n and others perfecting kildall s original design kathryn was also the project manager for cp m 86 and concurrent cp m 86 1 a b hogan thom 1981 09 14 state of microcomputing some horses running neck and neck pp 10 12 retrieved 2019 04 08 wise deborah 1982 05 10 mainframe makers court third party vendors for micro software infoworld pp 21 22 archived from the original on 2015 03 18 retrieved 2015 01 25 a b meyer edwin w 1982 06 14 the xerox 820 a cp m operated system from xerox infoworld pp 101 104 retrieved 2019 03 30 da cruz frank 1984 04 27 new release of kermit for cp m 80 info kermit digest mailing list kermit project columbia university archived from the original on 2021 04 17 retrieved 2016 02 23 2 clarke a eaton j m david d powys lybbe 1983 10 26 cp m the software bus a programmer s companion sigma press isbn 978 0905104188 johnson herbert r 2014 07 30 cp m and digital research inc dri history swaine michael 1997 04 01 gary kildall and collegial entrepreneurship dr dobb s journal archived from the original on 2007 01 24 retrieved 2006 11 20 bunnell david february 1982 the man behind the machine a pc exclusive interview with software guru bill gates pc magazine p 16 archived from the original on 2013 05 09 retrieved 2012 02 17 pl i language programmer s guide pdf digital research mace scott 1984 01 09 ibm pc clone makers shun total compatibility infoworld pp 79 81 archived from the original on 2015 03 16 retrieved 2015 02 04 pournelle jerry june 1983 zenith z 100 epson qx 10 software licensing and the software piracy problem byte 8 6 p 411 archived from the original on 2014 06 09 retrieved 2013 10 20 a b derfler frank j 1982 10 18 kaypro ii a low priced 26 pound portable micro infoworld p 59 archived from the original on 2014 01 01 retrieved 2013 10 22 loguidice bill 2012 07 28 more on avalon hill computer games on heath zenith platforms armchair arcade archived from the original on 2015 07 23 retrieved 2015 07 22 sblendorio francesco 2015 12 01 gorillas for cp m archived from the original on 2016 02 05 retrieved 2015 07 22 pournelle jerry april 1982 the osborne 1 zeke s new friends and spelling revisited byte p 212 retrieved 2021 05 24 waite mitchell lafore robert w volpe jerry 1985 the cp m mode the official book for the commodore 128 personal computer howard w sams co p 98 isbn 0 672 22456 9 now a complete cp m pascal for only 29 95 byte...