535:
701:
41:
3254:
2692:
32:
786:-inch 1.44 MB floppy disk drives, which IBM introduced in its 80286-based and higher PS/2 models. The upgrade from DOS 3.2 to 3.3 was completely written by IBM, with no development effort on the part of Microsoft, who were working on "Advanced DOS 1.0". DOS 3.30 was the last version designed with the IBM XT and floppy-only systems in mind; it became one of the most popular versions and many users preferred it to its buggy successor.
3265:
720:(MB) floppy disks. Planned networking capabilities in DOS 3.00 were judged too buggy to be usable and Microsoft disabled them prior to the OS's release. In any case, IBM's original plans for the AT had been to equip it with a proper next-generation OS that would use its extended features, but this never materialized. PC DOS 3.1 (released March 1985) fixed the bugs in DOS 3.00 and supported IBM's Network Adapter card on the
342:
1985, the joint development agreement (JDA) between IBM and
Microsoft for the development of PC DOS had each company giving the other company a completely developed version. Most of the time branded versions were identical, but there were some cases in which each of the companies made minor modifications to their version of DOS. In the fall of 1984, IBM gave all the source code and documentation of the internally developed
1872:(xvii+1053 pages; 29 cm) (NB. This original edition contains flowcharts of the internal workings of the system. It was withdrawn by Microsoft before mass-distribution in 1986 because it contained many factual errors as well as some classified information which should not have been published. Few printed copies survived. It was replaced by a completely reworked edition in 1988.
621:
In late 1981, Paterson, now at
Microsoft, began writing PC DOS 1.10. It debuted in May 1982 along with the Revision B IBM PC. Support for the new double-sided drives was added, allowing 320 KB per disk. A number of bugs were fixed, and error messages and prompts were made less cryptic.
846:
PC DOS remained a rebranded version of MS-DOS until 1993. IBM and
Microsoft parted ways—MS-DOS 6 was released in March, and PC DOS 6.1 (separately developed) followed in June. Most of the new features from MS-DOS 6.0 appeared in PC DOS 6.1 including the new boot menu support and
322:
The reasons were internal. We had a terrible problem being sued by people claiming we had stolen their stuff. It could be horribly expensive for us to have our programmers look at code that belonged to someone else because they would then come back and say we stole it and made all this money. We had
660:
in place of the CP/M-derivative file control blocks and loadable device drivers could now be used for adding hardware beyond that which the IBM PC BIOS supported. BASIC and most of the utilities provided with DOS were substantially upgraded as well. A major undertaking that took almost 10 months of
341:
Over the history of IBM PC DOS, various versions were developed by IBM and
Microsoft. By the time PC DOS 3.0 was completed, IBM had a team of developers covering the full OS. At that point in time, either IBM or Microsoft completely developed versions of IBM PC DOS going forward. By
794:
PC DOS 4.0 (internally known as DOS 3.4 originally) shipped July 1988. DOS 4.0 had some compatibility issues with low-level disk utilities due to some internal data structure changes. DOS 4.0 used more memory than DOS 3.30 and it also had a few glitches. Newly added EMS drivers were only
302:
The IBM task force assembled to develop the IBM PC decided that critical components of the machine, including the operating system, would come from outside vendors. This radical break from company tradition of in-house development was one of the key decisions that made the IBM PC an industry
566:, which Microsoft was helping IBM to write. IBM had more people writing requirements for the computer than Microsoft had writing code. O'Rear often felt overwhelmed by the number of people he had to deal with at the ESD (Entry Systems Division) facility in
823:
option to display command syntax. Aside from IBM's PC DOS, MS-DOS was the only other version available as OEM editions vanished since by this time PCs were 100% compatible so customizations for hardware differences were no longer necessary.
1925:; Rubin, Darryl; Ryan, Ralph; Schulmeisters, Karl; Shah, Rajen; Shaw, Barry; Short, Anthony; Slivka, Ben; Smirl, Jon; Stillmaker, Betty; Stoddard, John; Tillman, Dennis; Whitten, Greg; Yount, Natalie; Zeck, Steve (1988). "Technical advisors".
956:
PC-DOS 2000 was the last version of IBM PC-DOS that was sold at retail. IBM advertised it as a Y2K compliant DOS. As it reports itself as "IBM PC-DOS 7 Revision 1", it is often refereed to as "IBM PC-DOS7R1" or just "PC-DOS7R1".
1840:; Tomlin, Jim; Vian, Kathleen; Wolverton, Van. Beley, Jim; Preppernau, Barry; Beason, Pam; Lewis, Andrea; Rygmyr, David (eds.). Microsoft Reference Library. Vol. 1 (Original withdrawn ed.). Redmond, Washington, USA:
716:, its next-generation machine. Along with this was DOS 3.00. Despite jumping a whole version number, it again proved little more than an incremental upgrade, adding nothing more substantial than support for the AT's new 1.2
323:
lost a series of suits on this, and so we didn't want to have a product which was clearly someone else's product worked on by IBM people. We went to
Microsoft on the proposition that we wanted this to be their product.
952:
and other fixes applied. To applications, PC DOS 2000 reports itself as "IBM PC DOS 7.00, revision 1", in contrast to the original PC DOS 7, which reported itself as "IBM PC DOS 7.00, revision 0".
661:
work, DOS 2.0 was more than twice as big as DOS 1.x, occupying around 28 KB of RAM compared to the 12 KB of its predecessor. It would form the basis for all
Microsoft consumer-oriented OSes until 2001, when
932:. An algebraic command line calculator and a utility program to load device drivers from the command line were added. PC DOS 7 also included many optimizations to increase performance and reduce memory usage.
691:
and licensed their own OEM version of DOS 1.10 (quickly replaced by DOS 2.00) from
Microsoft. Other PC compatibles followed suit, most of which included hardware-specific DOS features, although some were generic.
763:
In June 1985, IBM and
Microsoft signed a long-term Joint Development Agreement to share specified DOS code and create a new operating system from scratch, known at the time as Advanced DOS. On 2 April 1987
591:
1.x and most of its architecture, function calls and file-naming conventions were copied directly from the older OS. The most significant difference was the fact that it introduced a different file system,
2183:
An additional undocumented feature added to the User
Interface is the ability to drop directly out to a DOS prompt. Pressing F3 (there is no prompt for this) will exit the recovery utility and go to a DOS
1901:; Borman, Reuben; Borman, Rob; Butler, John; Carroll, Chuck; Chamberlain, Mark; Chell, David; Colee, Mike; Courtney, Mike; Dryfoos, Mike; Duncan, Rachel; Eckhardt, Kurt; Evans, Eric; Farmer, Rick;
314:
IBM wanted
Microsoft to retain ownership of whatever software it developed, and wanted nothing to do with helping Microsoft, other than making suggestions from afar. According to task force member
1152:. This is particularly important for DOS 7, because various features introduced in MS-DOS 7.0 and 7.1 are not supported in PC DOS 7.x, and vice versa, e.g., MS-DOS does not support
327:
IBM first contacted Microsoft to look the company over in July 1980. Negotiations continued over the months that followed, and the paperwork was officially signed in early November.
286:. Both operating systems were identical or almost identical until 1993, when IBM began selling PC DOS 6.1 with new features. The collective shorthand for PC DOS and MS-DOS was
1909:; McKinney, Bruce; Martin, Pascal; Mathers, Estelle; Matthews, Bob; Melin, David; Mergentime, Charles; Nevin, Randy; Newell, Dan; Newell, Tani; Norris, David; O'Leary, Mike;
1905:; Geary, Michael; Griffin, Bob; Hogarth, Doug; Johnson, James W.; Kermaani, Kaamel; King, Adrian; Koch, Reed; Landowski, James; Larson, Chris; Lennon, Thomas; Lipkie, Dan;
338:
operating systems. IBM's expectation proved correct: one survey found that 96.3% of PCs were ordered with the $ 40 PC DOS compared to 3.4% with the $ 240 CP/M-86.
1969:(xix+1570 pages; 26 cm) (NB. This edition was published in 1988 after extensive rework of the withdrawn 1986 first edition by a different team of authors.
799:, a full-screen utility designed to make the command-line OS more user-friendly. Microsoft took back control of development and released a bug-fixed DOS 4.01.
1937:; Rabinowitz, Chip; Tomlin, Jim; Wilton, Richard; Wolverton, Van; Wong, William; Woodcock, JoAnne (Completely reworked ed.). Redmond, Washington, USA:
834:
This was the last version of DOS that IBM and Microsoft shared the full code for, and the DOS that was integrated into OS/2 2.0's, and later Windows NT's,
1741:
1712:
2196:
2726:
1873:
2355:
901:
3129:
2319:
768:
was announced as the first product produced under the agreement. At the same time, IBM released its next generation of personal computers, the
672:
In October 1983 (officially 1 November 1983) DOS 2.1 debuted. It fixed some bugs and added support for half-height floppy drives and the new
995:
were not released in retail, but used in products such as the IBM ServerGuide Scripting Toolkit. A build of this version of DOS appeared in
795:
compatible with IBM's EMS boards and not the more common Intel and AST ones. DOS 4.0 is also notable for including the first version of the
3310:
1983:
2023:
315:
1309:
2024:"Microsoft Operating System/2 With Windows Presentation Manager Provides Foundation for Next Generation of Personal Computer Industry"
1584:
3269:
912:
PC DOS 7 was released in April 1995 and was the last release of DOS before IBM software development (other than the development
291:
2139:
1680:
1659:
1634:
1609:
1559:
1534:
1509:
1463:
1438:
1413:
1045:
3295:
2315:
1363:
3325:
940:
The most recent retail release was PC DOS 2000 – released from Austin in 1998 – which found its niche in the
924:, which extended a standard 1.44 MB floppy disk to 1.86 MB. SuperStor disk compression technology was replaced with
579:
discussed rumors of a forthcoming personal computer with "a CP/M-like DOS ... to be called, simply, 'IBM Personal Computer DOS
180:
English (US), English (UK), Danish, Dutch, Finnish, French, German, Italian, Norwegian, Portuguese, Russian, Spanish, Swedish
1102:
Formally known as "The IBM Personal Computer DOS" from versions 1.0 through 3.30, as reported in those versions' respective
2719:
3330:
2766:
2348:
1078:
2057:
Intel Corporation, "NewsBit: Microsoft, Intel Develop Power Standard", Microcomputer Solutions, March/April 1992, page 1
2540:
2118:
648:) began work on PC DOS 2.0. Completely rewritten, DOS 2.0 added subdirectories and hard disk support for the new
2761:
2327:
2301:
1946:
1849:
1233:
1073:
992:
558:. O'Rear got 86-DOS to run on the prototype PC in February 1981. 86-DOS had to be converted from 8-inch to 5.25-inch
3320:
3300:
3258:
2879:
2712:
2495:
1133:
587:
IBM PC DOS 1.0 for its August 1981 release with the IBM PC. The initial version of DOS was largely based on
1186:
3315:
2695:
2341:
2225:
1748:
1705:
1970:
652:, which debuted in March 1983. A new 9-sector format bumped the capacity of floppy disks to 360 KB. The
2204:
3089:
1061:
3174:
3124:
2490:
2436:
921:
152:
129:
1183:
Remi's Classic Computers - My collection of vintage computers, game consoles, history, specs and repairs
3204:
1057:
1049:
2168:
1036:
allow one to prepare FAT32 disks. Additional utilities are taken from PC DOS 2000, where needed.
2794:
1781:
828:
547:
195:
2604:
2545:
2500:
2394:
1706:"86-DOS version 0.3 (1980-11-15) License Agreement between Seattle Computer Products and Microsoft"
984:
649:
76:
3119:
3094:
1281:
975:
products had a copy of the latest version of PC DOS in their Rescue and Recovery partition.
2092:
2078:
1225:
1214:
3290:
2904:
2535:
2446:
2441:
2431:
2384:
2031:
945:
884:, such as Central Point Backup Utility (CPBACKUP). PC DOS 6.1 reports itself as DOS 6.00.
878:
215:
1929:. By Duncan, Ray; Bostwick, Steve; Burgoyne, Keith; Byers, Robert A.; Hogan, Thom; Kyle, Jim;
3305:
2735:
2627:
2453:
1336:
1253:
1044:
In 1986, IBM announced PC DOS support for client access to the file services defined by
769:
757:
358:
350:
267:
263:
2771:
2389:
1221:
1083:
849:
330:
Although IBM expected that most customers would use PC DOS, the IBM PC also supported
235:
67:
8:
3064:
2147:
881:
835:
816:
812:
624:
567:
290:, which is also the generic term for disk operating system, and is shared with dozens of
232:
2066:
3044:
3039:
2884:
2776:
2408:
2404:
1836:. By Bornstein, Howard; Bredehoeft, Lawrence; Duncan, Ray; Morris, Carol; Rose, David;
1764:
1728:
1488:
1249:
861:
739:
604:
598:
1767:
case as exhibit #2/#3. The document also carries a typed date stamp as of 1981-07-22.)
3184:
2485:
2416:
2323:
2297:
1960:
1952:
1942:
1922:
1863:
1855:
1845:
1825:
1229:
949:
941:
772:(PS/2). PC DOS 3.3, released with the PS/2 line, added support for high density
688:
645:
346:
for DOS to Microsoft so that Microsoft could more fully understand how to develop an
271:
201:
72:
1254:"The Man Behind The Machine? A PC Exclusive Interview With Software Guru Bill Gates"
892:
PC DOS 6.3 followed in December. PC DOS 6.3 was also used in OS/2 for the
2658:
2653:
2555:
2364:
925:
808:
227:
175:
2934:
1938:
1934:
1918:
1841:
1314:
920:
programming language was added, as well as support for a new floppy disk format,
684:
575:
347:
573:
Perhaps the first public mention of the operating system was in July 1981, when
2889:
2704:
2520:
2229:
1890:
1829:
1392:
1064:
was added to PC DOS when they became available on the DDM server systems.
1000:
721:
641:
208:
2599:
2045:
1052:
available on IBM System/36, IBM System/38 and IBM mainframe computers running
534:
3284:
3179:
3034:
2929:
2614:
2525:
2376:
1930:
1910:
1906:
1898:
1867:
1817:
1813:
870:
551:
335:
104:
1964:
3054:
3009:
2679:
2648:
2463:
2333:
2008:
1914:
1821:
1777:
996:
913:
559:
555:
2233:
700:
3199:
2864:
2559:
2505:
1341:
1286:
1258:
1103:
1024:
709:
657:
610:
354:
343:
219:
40:
1742:"86-DOS Sales Agreement between Seattle Computer Products and Microsoft"
2949:
2939:
2836:
2826:
2622:
1902:
1894:
1837:
1809:
1805:
1018:
1012:
874:
666:
662:
637:
308:
51:
31:
3194:
3149:
3024:
3019:
3014:
3004:
2036:(NB. A copy of Microsoft's 1987-04-02 press release announcing OS/2.)
1178:
1149:
897:
796:
713:
584:
304:
279:
56:
2169:"How to use the pre-boot service partition to recover your software"
738:-inch double-density 720 KB floppy disk drives, supporting the
3224:
3189:
2989:
2974:
2969:
2914:
2909:
2799:
2643:
2567:
2530:
1010:
Most builds of this version of DOS are limited to the kernel files
972:
717:
673:
615:
1048:(DDM). This enabled programs on PCs to create, manage, and access
3239:
3209:
3164:
3139:
3074:
3069:
3059:
2964:
2954:
2944:
2924:
2894:
2869:
2846:
2841:
2831:
2756:
2589:
2515:
2426:
2421:
1119:
960:
929:
893:
855:
588:
331:
247:
2110:
1956:
3219:
3214:
3114:
3104:
3099:
3079:
3029:
2994:
2919:
2874:
2816:
2789:
2753:
2473:
2458:
2287:
IBM Disk Operating System Version 5.0. User Guide and Reference
2172:
1859:
1004:
866:
680:
550:(SCP), which was modified for the IBM PC by Microsoft employee
543:
283:
3234:
3169:
3159:
3144:
3109:
2999:
2959:
2821:
2811:
2584:
2577:
2510:
2311:. Margaret Averett, 1995. Part number 83G9260 (S83G-9260-00).
1913:; Olsson, Mike; Osterman, Larry; Ostling, Ridge; Pai, Sunil;
1216:
Hard Drive: Bill Gates and the Making of the Microsoft Empire
988:
618:(KB) 5.25-inch floppies were the only disk format supported.
593:
628:
was now able to load files greater than 64 KB in size.
3229:
3154:
3134:
3084:
3049:
2899:
2594:
2478:
2143:
1889:
1153:
1053:
917:
807:
DOS 5 debuted in June 1991. DOS 5 supported the use of the
765:
653:
563:
334:, which became available six months after PC DOS, and
1834:
MS-DOS (Versions 1.0-3.2) Technical Reference Encyclopedia
2857:
2663:
2468:
2368:
2200:
2140:"Drivers and Software for Legacy (Discontinued) Products"
1684:
1638:
1613:
1588:
1563:
1538:
1513:
1467:
1442:
1417:
1370:
1141:
287:
275:
188:
86:
60:
2273:
Getting Started with Disk Operating System Version 4.00
2046:
History of Microsoft Windows and MS-DOS (Miscellaneous)
1156:, and PC DOS 7 and 2000 do not support LBA access.
756:-inch floppy disks, released April 1986, and later the
608:
commands were separate executables rather than part of
2111:"Information and history about PC DOS and MS-DOS"
1039:
1804:
554:
with assistance from SCP (later Microsoft) employee
311:, was eventually selected for the operating system.
636:Later, a group of Microsoft programmers (primarily
2294:IBM PC DOS and Microsoft Windows User's Guide
1213:
1003:. Version 7.1 indicates support for FAT32 also in
278:from the early 1980s into the 2000s. Developed by
1927:The MS-DOS Encyclopedia: versions 1.0 through 3.2
1364:"Product Announcement: The IBM Personal Computer"
3282:
2734:
2197:"IBM ServerGuide Scripting Toolkit, DOS Edition"
1393:"IBM Personal Computer DOS Version 1.1.0 (1982)"
1329:
815:(UMBs) on 80286 and later systems to reduce its
538:User manual and diskette for IBM PC DOS 1.1
2296:. Suzanne Weixel, 2nd ed., Indianapolis, 1995.
2189:
1211:
819:usage. Also all DOS commands now supported the
2218:
1885:
1883:
1881:
1698:
1310:"The IBM Personal Computer: First Impressions"
1207:
1205:
1203:
353:, overlapping windows (for its development of
2720:
2349:
2289:. IBM Corporation, 1991. Part number 07G4584.
2282:. IBM Corporation, 1988. Part number 15F1371.
2275:. IBM Corporation, 1988. Part number 15F1370.
2268:. IBM Corporation, 1987. Part number 94X9575.
2261:. IBM Corporation, 1987. Part number 80X0933.
1770:
2363:
2015:
944:market and elsewhere. PC DOS 2000 is a
1975:
1878:
1734:
1301:
1242:
1200:
252:IBM Personal Computer Disk Operating System
3264:
2727:
2713:
2356:
2342:
1798:
827:The POWER.EXE was introduced that has the
2132:
1369:(Press release). White Plains, New York:
1273:
1114:
1112:
542:Microsoft first licensed, then purchased
2280:Using Disk Operating System Version 4.00
2232:. 2004-01-03. TECH108761. Archived from
2203:. 2008-01-24. MIGR-53564. Archived from
2104:
2102:
2039:
1776:
1046:Distributed Data Management Architecture
699:
533:
2021:
1307:
1248:
1170:
3283:
2161:
1981:
1660:"Announcement Letter Number ZP95-0102"
1585:"Announcement Letter Number ZP91-0432"
1390:
1212:Wallace, James; Erickson, Jim (1992).
1109:
963:used PC DOS 2000 in their legacy
282:, it was also sold by that company as
2708:
2337:
2099:
2001:
1279:
596:. Unlike all later DOS versions, the
2264:IBM Corporation and Microsoft, Inc.
2257:IBM Corporation and Microsoft, Inc.
2009:"DOS 2.0 and 2.1 | OS/2 Museum"
1681:"Announcement Letter Number 298-169"
1635:"Announcement Letter Number 294-263"
1610:"Announcement Letter Number 293-347"
1560:"Announcement Letter Number 288-380"
1535:"Announcement Letter Number 287-098"
1510:"Announcement Letter Number 286-129"
1464:"Announcement Letter Number 284-283"
1439:"Announcement Letter Number 283-389"
1414:"Announcement Letter Number 283-034"
1176:
724:. PC DOS 3.2 added support for
3311:Floppy disk-based operating systems
2226:"Create a Standard Ghost Boot Disk"
1079:Comparison of DOS operating systems
1040:PC DOS as a distributed file client
708:In August 1984, IBM introduced the
13:
2251:
2108:
1824:; Peters, Chris; Phillips, Bruce;
1096:
983:PC DOS 7.1 added support for
364:
274:. It was manufactured and sold by
14:
3342:
1074:Timeline of DOS operating systems
900:disk compression technology from
877:. It also licensed components of
292:disk operating systems called DOS
3263:
3253:
3252:
2691:
2690:
896:. PC DOS 6.3 also featured
307:, founded five years earlier by
157:
134:
45:Version 1.10 (1982) command line
39:
30:
2121:from the original on 2020-02-21
2085:
2071:
2060:
2051:
1812:; King, Adrian; Larson, Chris;
1718:from the original on 2020-02-18
1673:
1652:
1627:
1602:
1577:
1552:
1527:
1502:
1481:
1456:
1431:
1406:
1337:"CP/M-86 Price Plunges to $ 60"
1189:from the original on 2019-08-04
3296:Discontinued operating systems
2316:PC DOS 7 Technical Update
2266:DOS 3.30: Reference (Abridged)
2022:Necasek, Michal (2004-06-24).
1917:; Perez, Gary; Peters, Chris;
1832:(1986). "Technical advisors".
1763:(NB. Published as part of the
1727:(NB. Published as part of the
1384:
1356:
1308:Lemmons, Phil (October 1981).
1056:. In 1988, client support for
935:
742:, IBM's first computer to use
1:
3326:Proprietary operating systems
1391:Sedory, Daniel (2008-08-13).
1280:Edlin, Jim (June–July 1982).
1163:
978:
887:
841:
789:
704:Retail box of IBM PC DOS 3.30
695:
631:
529:
1747:. 1981-07-27. Archived from
7:
2795:Multitasking MS-DOS 4.0/4.1
1982:Morgan, Chris (July 1981).
1782:"Is DOS a Rip-Off of CP/M?"
1662:(Press release). 1995-02-28
1345:. February 1983. p. 56
1067:
991:partitions. Various builds
907:
802:
524:
162:; 21 years ago
139:; 26 years ago
116:; 43 years ago
10:
3347:
3331:Assembly language software
3205:Technical Support SuperDOS
2309:PC DOS 7 User's Guide
873:was replaced with the IBM
831:standard in version 5.02.
656:-inspired kernel featured
297:
3248:
2982:
2855:
2752:
2743:
2688:
2672:
2636:
2613:
2554:
2403:
2375:
1984:"IBM's Personal Computer"
548:Seattle Computer Products
226:
207:
194:
184:
174:
151:
128:
110:
100:
92:
82:
66:
50:
38:
29:
16:Computer operating system
2605:Red Hat Enterprise Linux
2546:Red Hat Enterprise Linux
2395:Red Hat Enterprise Linux
2079:"IBM PC DOS VERSION 6.1"
1089:
1062:hierarchical directories
985:Logical Block Addressing
562:and integrated with the
1252:(February–March 1982).
1028:. The updated programs
916:) moved to Austin. The
3321:Microcomputer software
3301:Disk operating systems
2905:Datapac System Manager
2736:Disk operating systems
2442:DOS/360 and successors
2259:DOS 3.30: User's Guide
2146:. 2009. Archived from
2093:"IBM PC DOS Version 7"
705:
539:
325:
270:, its successors, and
216:Command-line interface
3316:IBM operating systems
2454:OS/360 and successors
1828:; Stillmaker, Betty;
1395:. The Starman's Realm
1222:John Wiley & Sons
1058:stream-oriented files
1050:record-oriented files
770:IBM Personal System/2
758:IBM Personal System/2
703:
537:
351:operating environment
320:
268:IBM Personal Computer
264:disk operating system
1731:case as exhibit #1.)
1179:"The History of DOS"
1118:For PC DOS the
1084:List of DOS commands
993:from 1999 up to 2003
969:Hitachi Feature Tool
869:was dropped and the
262:, is a discontinued
236:proprietary software
3065:DEC BATCH-11/DOS-11
2744:MS-DOS, IBM PC DOS,
2028:The History of OS/2
1250:Bunnell, David Hugh
971:(2.15) until 2009.
836:virtual DOS machine
817:conventional memory
813:Upper Memory Blocks
614:. Single-sided 160
568:Boca Raton, Florida
96:No longer supported
26:
3045:Concurrent DOS V60
3040:Concurrent DOS 68K
2885:Concurrent CP/M-86
2746:compatible systems
2109:Brooks, Vernon C.
1765:Comes v. Microsoft
1729:Comes v. Microsoft
965:Drive Fitness Test
740:IBM PC Convertible
706:
540:
426:September 14, 1984
272:IBM PC compatibles
24:
3278:
3277:
2785:
2784:
2702:
2701:
2365:Operating systems
2314:IBM Corporation.
2307:IBM Corporation.
2292:Que Corporation.
2285:IBM Corporation.
2278:IBM Corporation.
2271:IBM Corporation.
2115:PC DOS Retro
1921:; Pollock, John;
1683:(Press release).
1637:(Press release).
1612:(Press release).
1587:(Press release).
1562:(Press release).
1537:(Press release).
1512:(Press release).
1489:"IBM PC DOS 3.10"
1466:(Press release).
1441:(Press release).
1416:(Press release).
942:embedded software
847:the new commands
689:IBM PC compatible
687:, the first 100%
522:
521:
506:February 28, 1995
254:), also known as
241:
240:
202:Monolithic kernel
137:/ April 1998
73:Assembly language
3338:
3267:
3266:
3256:
3255:
2750:
2749:
2729:
2722:
2715:
2706:
2705:
2694:
2693:
2358:
2351:
2344:
2335:
2334:
2245:
2244:
2242:
2241:
2222:
2216:
2215:
2213:
2212:
2193:
2187:
2186:
2180:
2179:
2165:
2159:
2158:
2156:
2155:
2136:
2130:
2129:
2127:
2126:
2106:
2097:
2096:
2089:
2083:
2082:
2075:
2069:
2064:
2058:
2055:
2049:
2043:
2037:
2035:
2030:. Archived from
2019:
2013:
2012:
2005:
1999:
1998:
1996:
1995:
1979:
1973:
1968:
1935:Petzold, Charles
1919:Petzold, Charles
1887:
1876:
1871:
1802:
1796:
1795:
1793:
1792:
1774:
1768:
1762:
1760:
1759:
1753:
1746:
1738:
1732:
1726:
1724:
1723:
1717:
1710:
1702:
1696:
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1692:
1677:
1671:
1670:
1668:
1667:
1656:
1650:
1649:
1647:
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1631:
1625:
1624:
1622:
1621:
1606:
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1599:
1597:
1596:
1581:
1575:
1574:
1572:
1571:
1556:
1550:
1549:
1547:
1546:
1531:
1525:
1524:
1522:
1521:
1506:
1500:
1499:
1497:
1496:
1485:
1479:
1478:
1476:
1475:
1460:
1454:
1453:
1451:
1450:
1435:
1429:
1428:
1426:
1425:
1410:
1404:
1403:
1401:
1400:
1388:
1382:
1381:
1379:
1378:
1368:
1360:
1354:
1353:
1351:
1350:
1333:
1327:
1326:
1324:
1323:
1305:
1299:
1298:
1296:
1295:
1277:
1271:
1270:
1268:
1267:
1246:
1240:
1239:
1219:
1209:
1198:
1197:
1195:
1194:
1177:Jakobsen, Remi.
1174:
1157:
1147:
1139:
1128:
1123:
1116:
1107:
1100:
1035:
1031:
1027:
1021:
1015:
926:Stac Electronics
864:
858:
852:
822:
809:High Memory Area
785:
784:
780:
777:
755:
754:
750:
747:
737:
736:
732:
729:
669:) was released.
627:
613:
607:
601:
582:
416:November 1, 1983
369:
368:
170:
168:
163:
147:
145:
140:
124:
122:
117:
114:August 1981
43:
34:
27:
23:
21:Operating system
3346:
3345:
3341:
3340:
3339:
3337:
3336:
3335:
3281:
3280:
3279:
3274:
3244:
2983:Other platforms
2978:
2935:NetWare PalmDOS
2851:
2781:
2745:
2739:
2733:
2703:
2698:
2684:
2668:
2632:
2609:
2550:
2399:
2371:
2362:
2254:
2252:Further reading
2249:
2248:
2239:
2237:
2224:
2223:
2219:
2210:
2208:
2195:
2194:
2190:
2177:
2175:
2167:
2166:
2162:
2153:
2151:
2138:
2137:
2133:
2124:
2122:
2107:
2100:
2091:
2090:
2086:
2077:
2076:
2072:
2067:IBM PC DOS 5.02
2065:
2061:
2056:
2052:
2044:
2040:
2020:
2016:
2007:
2006:
2002:
1993:
1991:
1980:
1976:
1949:
1939:Microsoft Press
1923:Reynolds, Aaron
1891:Zbikowski, Mark
1888:
1879:
1852:
1842:Microsoft Press
1830:Zbikowski, Mark
1826:Reynolds, Aaron
1803:
1799:
1790:
1788:
1775:
1771:
1757:
1755:
1751:
1744:
1740:
1739:
1735:
1721:
1719:
1715:
1708:
1704:
1703:
1699:
1690:
1688:
1679:
1678:
1674:
1665:
1663:
1658:
1657:
1653:
1644:
1642:
1633:
1632:
1628:
1619:
1617:
1608:
1607:
1603:
1594:
1592:
1583:
1582:
1578:
1569:
1567:
1558:
1557:
1553:
1544:
1542:
1533:
1532:
1528:
1519:
1517:
1508:
1507:
1503:
1494:
1492:
1491:. PCjs Machines
1487:
1486:
1482:
1473:
1471:
1462:
1461:
1457:
1448:
1446:
1437:
1436:
1432:
1423:
1421:
1412:
1411:
1407:
1398:
1396:
1389:
1385:
1376:
1374:
1366:
1362:
1361:
1357:
1348:
1346:
1335:
1334:
1330:
1321:
1319:
1306:
1302:
1293:
1291:
1278:
1274:
1265:
1263:
1247:
1243:
1236:
1210:
1201:
1192:
1190:
1175:
1171:
1166:
1161:
1160:
1145:
1137:
1130:Get DOS version
1126:
1121:
1117:
1110:
1101:
1097:
1092:
1070:
1042:
1033:
1029:
1023:
1017:
1011:
981:
938:
910:
890:
879:Central Point's
860:
854:
848:
844:
820:
805:
792:
782:
778:
775:
773:
752:
748:
745:
743:
734:
730:
727:
725:
698:
685:Compaq Portable
634:
623:
609:
603:
597:
580:
532:
527:
386:August 12, 1981
367:
365:Version history
348:object-oriented
300:
210:
166:
164:
161:
143:
141:
138:
120:
118:
115:
111:Initial release
59:
46:
22:
17:
12:
11:
5:
3344:
3334:
3333:
3328:
3323:
3318:
3313:
3308:
3303:
3298:
3293:
3276:
3275:
3273:
3272:
3261:
3249:
3246:
3245:
3243:
3242:
3237:
3232:
3227:
3222:
3217:
3212:
3207:
3202:
3197:
3192:
3187:
3182:
3177:
3172:
3167:
3162:
3157:
3152:
3147:
3142:
3137:
3132:
3127:
3122:
3117:
3112:
3107:
3102:
3097:
3092:
3087:
3082:
3077:
3072:
3067:
3062:
3057:
3052:
3047:
3042:
3037:
3032:
3027:
3022:
3017:
3012:
3007:
3002:
2997:
2992:
2986:
2984:
2980:
2979:
2977:
2972:
2967:
2962:
2957:
2952:
2947:
2942:
2937:
2932:
2927:
2922:
2917:
2912:
2907:
2902:
2897:
2892:
2890:Concurrent DOS
2887:
2882:
2877:
2872:
2867:
2862:
2860:
2853:
2852:
2850:
2849:
2844:
2839:
2834:
2829:
2824:
2819:
2814:
2809:
2804:
2803:
2802:
2797:
2786:
2783:
2782:
2780:
2779:
2774:
2769:
2764:
2759:
2747:
2741:
2740:
2732:
2731:
2724:
2717:
2709:
2700:
2699:
2689:
2686:
2685:
2683:
2682:
2676:
2674:
2670:
2669:
2667:
2666:
2661:
2656:
2651:
2646:
2640:
2638:
2634:
2633:
2631:
2630:
2625:
2619:
2617:
2611:
2610:
2608:
2607:
2602:
2597:
2592:
2587:
2582:
2581:
2580:
2570:
2564:
2562:
2552:
2551:
2549:
2548:
2543:
2538:
2533:
2528:
2523:
2518:
2513:
2508:
2503:
2498:
2493:
2488:
2483:
2482:
2481:
2476:
2471:
2466:
2461:
2451:
2450:
2449:
2439:
2434:
2429:
2424:
2419:
2413:
2411:
2401:
2400:
2398:
2397:
2392:
2387:
2381:
2379:
2373:
2372:
2361:
2360:
2353:
2346:
2338:
2332:
2331:
2312:
2305:
2290:
2283:
2276:
2269:
2262:
2253:
2250:
2247:
2246:
2217:
2188:
2160:
2131:
2098:
2084:
2070:
2059:
2050:
2048:TACKtech Corp.
2038:
2034:on 2010-04-10.
2014:
2000:
1974:
1947:
1931:Letwin, Gordon
1907:McDonald, Marc
1899:Ballmer, Steve
1877:
1850:
1814:Letwin, Gordon
1797:
1780:(2007-08-08).
1769:
1733:
1711:. 1981-01-06.
1697:
1672:
1651:
1626:
1601:
1576:
1551:
1526:
1501:
1480:
1455:
1430:
1405:
1383:
1355:
1328:
1300:
1282:"CP/M Arrives"
1272:
1241:
1234:
1199:
1168:
1167:
1165:
1162:
1159:
1158:
1108:
1094:
1093:
1091:
1088:
1087:
1086:
1081:
1076:
1069:
1066:
1041:
1038:
980:
977:
937:
934:
909:
906:
889:
886:
843:
840:
804:
801:
791:
788:
722:IBM PC Network
697:
694:
646:Aaron Reynolds
642:Mark Zbikowski
633:
630:
583:". 86-DOS was
531:
528:
526:
523:
520:
519:
517:
514:
510:
509:
507:
504:
500:
499:
497:
496:April 27, 1994
494:
490:
489:
487:
484:
480:
479:
477:
474:
470:
469:
467:
464:
460:
459:
457:
454:
450:
449:
447:
444:
440:
439:
437:
434:
430:
429:
427:
424:
420:
419:
417:
414:
410:
409:
407:
404:
400:
399:
397:
394:
390:
389:
387:
384:
380:
379:
376:
373:
366:
363:
299:
296:
239:
238:
230:
224:
223:
213:
211:user interface
205:
204:
199:
192:
191:
186:
182:
181:
178:
172:
171:
155:
153:Latest preview
149:
148:
132:
130:Latest release
126:
125:
112:
108:
107:
102:
98:
97:
94:
90:
89:
84:
80:
79:
70:
64:
63:
54:
48:
47:
44:
36:
35:
20:
15:
9:
6:
4:
3:
2:
3343:
3332:
3329:
3327:
3324:
3322:
3319:
3317:
3314:
3312:
3309:
3307:
3304:
3302:
3299:
3297:
3294:
3292:
3291:1981 software
3289:
3288:
3286:
3271:
3262:
3260:
3251:
3250:
3247:
3241:
3238:
3236:
3233:
3231:
3228:
3226:
3223:
3221:
3218:
3216:
3213:
3211:
3208:
3206:
3203:
3201:
3198:
3196:
3193:
3191:
3188:
3186:
3183:
3181:
3180:Sinclair QDOS
3178:
3176:
3173:
3171:
3168:
3166:
3163:
3161:
3158:
3156:
3153:
3151:
3148:
3146:
3143:
3141:
3138:
3136:
3133:
3131:
3128:
3126:
3123:
3121:
3118:
3116:
3113:
3111:
3108:
3106:
3103:
3101:
3098:
3096:
3093:
3091:
3088:
3086:
3083:
3081:
3078:
3076:
3073:
3071:
3068:
3066:
3063:
3061:
3058:
3056:
3053:
3051:
3048:
3046:
3043:
3041:
3038:
3036:
3035:Commodore DOS
3033:
3031:
3028:
3026:
3023:
3021:
3018:
3016:
3013:
3011:
3008:
3006:
3003:
3001:
2998:
2996:
2993:
2991:
2988:
2987:
2985:
2981:
2976:
2973:
2971:
2968:
2966:
2963:
2961:
2958:
2956:
2953:
2951:
2948:
2946:
2943:
2941:
2938:
2936:
2933:
2931:
2930:Multiuser DOS
2928:
2926:
2923:
2921:
2918:
2916:
2913:
2911:
2908:
2906:
2903:
2901:
2898:
2896:
2893:
2891:
2888:
2886:
2883:
2881:
2878:
2876:
2873:
2871:
2868:
2866:
2863:
2861:
2859:
2854:
2848:
2845:
2843:
2840:
2838:
2835:
2833:
2830:
2828:
2825:
2823:
2820:
2818:
2815:
2813:
2810:
2808:
2805:
2801:
2798:
2796:
2793:
2792:
2791:
2788:
2787:
2778:
2775:
2773:
2770:
2768:
2765:
2763:
2760:
2758:
2755:
2754:
2751:
2748:
2742:
2737:
2730:
2725:
2723:
2718:
2716:
2711:
2710:
2707:
2697:
2687:
2681:
2678:
2677:
2675:
2671:
2665:
2662:
2660:
2657:
2655:
2652:
2650:
2647:
2645:
2642:
2641:
2639:
2635:
2629:
2626:
2624:
2621:
2620:
2618:
2616:
2615:Point of sale
2612:
2606:
2603:
2601:
2598:
2596:
2593:
2591:
2588:
2586:
2583:
2579:
2576:
2575:
2574:
2571:
2569:
2566:
2565:
2563:
2561:
2557:
2553:
2547:
2544:
2542:
2539:
2537:
2534:
2532:
2529:
2527:
2524:
2522:
2519:
2517:
2514:
2512:
2509:
2507:
2504:
2502:
2499:
2497:
2494:
2492:
2489:
2487:
2484:
2480:
2477:
2475:
2472:
2470:
2467:
2465:
2462:
2460:
2457:
2456:
2455:
2452:
2448:
2445:
2444:
2443:
2440:
2438:
2435:
2433:
2430:
2428:
2425:
2423:
2420:
2418:
2415:
2414:
2412:
2410:
2406:
2402:
2396:
2393:
2391:
2388:
2386:
2383:
2382:
2380:
2378:
2377:Supercomputer
2374:
2370:
2366:
2359:
2354:
2352:
2347:
2345:
2340:
2339:
2336:
2329:
2328:0-7384-0677-5
2325:
2321:
2317:
2313:
2310:
2306:
2303:
2302:0-7897-0276-2
2299:
2295:
2291:
2288:
2284:
2281:
2277:
2274:
2270:
2267:
2263:
2260:
2256:
2255:
2236:on 2014-02-13
2235:
2231:
2227:
2221:
2207:on 2016-03-11
2206:
2202:
2198:
2192:
2185:
2174:
2170:
2164:
2150:on 2014-03-04
2149:
2145:
2141:
2135:
2120:
2116:
2112:
2105:
2103:
2095:. 1995-02-28.
2094:
2088:
2081:. 1993-06-29.
2080:
2074:
2068:
2063:
2054:
2047:
2042:
2033:
2029:
2025:
2018:
2010:
2004:
1989:
1985:
1978:
1971:
1966:
1962:
1958:
1954:
1950:
1948:1-55615-049-0
1944:
1940:
1936:
1932:
1928:
1924:
1920:
1916:
1915:Paterson, Tim
1912:
1908:
1904:
1900:
1896:
1892:
1886:
1884:
1882:
1874:
1869:
1865:
1861:
1857:
1853:
1851:0-914845-69-1
1847:
1843:
1839:
1835:
1831:
1827:
1823:
1822:Paterson, Tim
1819:
1815:
1811:
1807:
1801:
1787:
1786:DosMan Drivel
1783:
1779:
1778:Paterson, Tim
1773:
1766:
1754:on 2014-09-05
1750:
1743:
1737:
1730:
1714:
1707:
1701:
1686:
1682:
1676:
1661:
1655:
1640:
1636:
1630:
1615:
1611:
1605:
1590:
1586:
1580:
1565:
1561:
1555:
1540:
1536:
1530:
1515:
1511:
1505:
1490:
1484:
1469:
1465:
1459:
1444:
1440:
1434:
1419:
1415:
1409:
1394:
1387:
1372:
1365:
1359:
1344:
1343:
1338:
1332:
1317:
1316:
1311:
1304:
1289:
1288:
1283:
1276:
1261:
1260:
1255:
1251:
1245:
1237:
1235:0-471-56886-4
1231:
1227:
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486:July 26, 1993
485:
482:
481:
478:
476:June 11, 1991
475:
472:
471:
468:
466:July 19, 1988
465:
462:
461:
458:
456:April 2, 1987
455:
452:
451:
448:
446:April 2, 1986
445:
442:
441:
438:
436:April 2, 1985
435:
432:
431:
428:
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406:March 8, 1983
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336:UCSD p-System
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105:Closed source
103:
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93:Working state
91:
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71:
69:
65:
62:
58:
55:
53:
49:
42:
37:
33:
28:
19:
3306:DOS variants
3055:Cromemco DOS
3010:Apple ProDOS
2806:
2680:Fedora Linux
2649:Workplace OS
2572:
2506:System/88 OS
2320:IBM Redbooks
2308:
2293:
2286:
2279:
2272:
2265:
2258:
2238:. Retrieved
2234:the original
2220:
2209:. Retrieved
2205:the original
2191:
2182:
2176:. Retrieved
2163:
2152:. Retrieved
2148:the original
2134:
2123:. Retrieved
2114:
2087:
2073:
2062:
2053:
2041:
2032:the original
2027:
2017:
2003:
1992:. Retrieved
1987:
1977:
1926:
1833:
1800:
1789:. Retrieved
1785:
1772:
1756:. Retrieved
1749:the original
1736:
1720:. Retrieved
1700:
1689:. Retrieved
1687:. 1998-05-26
1675:
1664:. Retrieved
1654:
1643:. Retrieved
1641:. 1994-04-27
1629:
1618:. Retrieved
1616:. 1993-06-29
1604:
1593:. Retrieved
1591:. 1991-06-11
1579:
1568:. Retrieved
1566:. 1988-07-19
1554:
1543:. Retrieved
1541:. 1987-04-02
1529:
1518:. Retrieved
1516:. 1986-04-02
1504:
1493:. Retrieved
1483:
1472:. Retrieved
1470:. 1984-08-14
1458:
1447:. Retrieved
1445:. 1983-11-01
1433:
1422:. Retrieved
1420:. 1983-03-08
1408:
1397:. Retrieved
1386:
1375:. Retrieved
1373:. 1981-08-12
1358:
1347:. Retrieved
1340:
1331:
1320:. Retrieved
1318:. p. 36
1313:
1303:
1292:. Retrieved
1290:. p. 43
1285:
1275:
1264:. Retrieved
1262:. p. 16
1257:
1244:
1215:
1191:. Retrieved
1182:
1172:
1129:
1098:
1043:
1009:
997:Norton Ghost
982:
968:
964:
959:
955:
948:of 7.0 with
939:
914:IBM ViaVoice
911:
891:
845:
833:
826:
806:
793:
762:
707:
678:
671:
658:file handles
635:
620:
574:
572:
560:floppy disks
556:Tim Paterson
541:
516:May 29, 1998
375:Release date
359:multitasking
340:
329:
326:
321:
313:
301:
259:
255:
251:
243:
242:
176:Available in
101:Source model
18:
3200:SpartaDOS X
2560:workstation
1990:. p. 6
1911:O'Rear, Bob
1903:Gates, Bill
1895:Allen, Paul
1838:Socha, John
1818:O'Rear, Bob
1810:Gates, Bill
1806:Allen, Paul
1342:PC Magazine
1287:PC Magazine
1259:PC Magazine
1224:. pp.
1144:instead of
1104:COMMAND.COM
1025:COMMAND.COM
967:(4.15) and
936:PC DOS 2000
710:Intel 80286
611:COMMAND.COM
396:May 7, 1982
378:References
355:Windows 2.0
344:IBM TopView
220:COMMAND.COM
135:PC DOS 2000
3285:Categories
2950:PC-MOS/386
2940:Novell DOS
2837:SISNE plus
2827:Novell DOS
2807:IBM PC DOS
2767:Comparison
2240:2014-02-13
2211:2014-02-13
2199:. 1.3.07.
2178:2014-02-11
2154:2014-02-13
2125:2014-01-10
1994:2013-10-18
1791:2014-02-13
1758:2013-04-01
1722:2013-04-01
1691:2023-02-08
1666:2023-02-08
1645:2023-02-08
1620:2023-02-08
1595:2023-02-08
1570:2023-02-08
1545:2023-02-08
1520:2023-02-08
1495:2023-02-08
1474:2023-02-08
1449:2023-02-08
1424:2023-02-08
1399:2023-02-08
1377:2023-02-08
1349:2017-10-11
1322:2016-07-12
1294:2016-07-12
1266:2016-07-12
1193:2017-11-10
1164:References
1019:IBMDOS.COM
1013:IBMBIO.COM
987:(LBA) and
979:PC DOS 7.1
946:slipstream
888:PC DOS 6.3
842:PC DOS 6.1
811:(HMA) and
790:PC DOS 4.x
696:PC DOS 3.x
667:Windows NT
665:(based on
663:Windows XP
638:Paul Allen
632:PC DOS 2.x
552:Bob O'Rear
530:PC DOS 1.x
453:3.3 (3.30)
443:3.2 (3.20)
433:3.1 (3.10)
413:2.1 (2.10)
393:1.1 (1.10)
309:Bill Gates
303:standard.
244:IBM PC DOS
233:Commercial
158:PC DOS 7.1
68:Written in
25:IBM PC DOS
3195:SpartaDOS
3150:NewDos/80
3025:Atari TOS
3020:Atari DOS
3015:Apple SOS
3005:Apple DOS
2409:mainframe
1868:635600205
1150:Microsoft
1125:function
898:SuperStor
797:DOS Shell
760:in 1987.
714:IBM PC/AT
712:-derived
679:In 1983,
625:DEBUG.EXE
585:rebranded
316:Jack Sams
305:Microsoft
280:Microsoft
185:Platforms
83:OS family
57:Microsoft
52:Developer
3259:Category
3225:TurboDOS
3190:SmartDOS
3130:MicroDOS
2990:AmigaDOS
2975:TurboDOS
2970:Towns OS
2915:K8918-OS
2910:DOS Plus
2800:MS-DOS 7
2772:Commands
2762:Timeline
2696:Category
2659:Trillian
2654:Monterey
2644:Taligent
2637:Projects
2568:Textpack
2322:, 1995.
2230:Symantec
2119:Archived
1965:16581341
1957:87-21452
1713:Archived
1187:Archived
1132:returns
1120:DOS INT
1068:See also
1034:FORMAT32
1001:Symantec
973:ThinkPad
908:PC DOS 7
882:PC Tools
875:E Editor
803:PC DOS 5
718:megabyte
674:IBM PCjr
616:kilobyte
525:Versions
266:for the
3240:Z80-RIO
3210:Top-DOS
3165:RealDOS
3140:MSX-DOS
3075:DOS/360
3070:DIP DOS
3060:CSI-DOS
2965:SCP1700
2955:REAL/32
2945:OpenDOS
2925:MP/M-86
2895:CP/M-86
2870:4690 OS
2865:4680 OS
2847:FreeDOS
2842:PTS-DOS
2832:ROM-DOS
2673:Related
2628:4690 OS
2623:4680 OS
2556:Desktop
2486:VM line
2432:TSS/360
2427:TOS/360
2422:BOS/360
1860:86-8640
1106:outputs
1030:FDISK32
961:Hitachi
930:STACKER
902:Addstor
894:PowerPC
856:DELTREE
781:⁄
751:⁄
733:⁄
589:CP/M-80
372:Version
332:CP/M-86
298:History
260:IBM DOS
248:acronym
228:License
209:Default
165: (
144:1998-04
142: (
121:1981-08
119: (
3268:
3257:
3220:TRSDOS
3215:TR-DOS
3115:iS-DOS
3105:IDEDOS
3100:GEMDOS
3080:DOS XL
3030:BW-DOS
2995:AMSDOS
2920:FlexOS
2875:86-DOS
2856:Other
2817:DR-DOS
2790:MS-DOS
2573:PC DOS
2521:zLinux
2474:OS/390
2459:OS/VS1
2405:Server
2326:
2300:
2184:prompt
2173:Lenovo
1963:
1955:
1945:
1866:
1858:
1848:
1232:
1022:, and
1005:MS-DOS
867:QBasic
859:, and
850:CHOICE
681:Compaq
650:IBM XT
544:86-DOS
357:) and
284:MS-DOS
256:PC DOS
196:Kernel
160:/ 2003
3235:Z-DOS
3170:SB-80
3160:PTDOS
3145:MyDOS
3110:IMDOS
3000:ANDOS
2960:SB-86
2822:H-DOS
2812:DOS/V
2777:Games
2738:(DOS)
2585:PC/IX
2578:DOS/V
2541:SRTOS
2511:IBM i
2417:IBSYS
1752:(PDF)
1745:(PDF)
1716:(PDF)
1709:(PDF)
1367:(PDF)
1136:code
1090:Notes
999:from
989:FAT32
594:FAT12
546:from
3270:List
3230:UDOS
3185:RDOS
3155:OS/M
3135:MP/M
3125:MDOS
3120:ISIS
3095:FLEX
3085:Edos
3050:CP/M
2900:CP/K
2880:ADOS
2595:OS/2
2531:DPPX
2526:DPCX
2479:z/OS
2324:ISBN
2298:ISBN
2144:HGST
1988:BYTE
1961:OCLC
1953:LCCN
1943:ISBN
1864:OCLC
1856:LCCN
1846:ISBN
1315:Byte
1230:ISBN
1154:REXX
1148:for
1140:for
1060:and
1054:CICS
1032:and
918:REXX
862:MOVE
766:OS/2
654:Unix
644:and
622:The
605:TIME
602:and
599:DATE
576:Byte
564:BIOS
513:2000
250:for
246:(an
198:type
167:2003
3175:SCP
3090:EOS
2858:x86
2757:API
2664:K42
2600:AOS
2590:AIX
2536:SSP
2516:AIX
2501:CPF
2496:TPF
2491:ACP
2469:MVS
2464:SVS
2447:VSE
2437:RAX
2390:CNK
2385:INK
2369:IBM
2367:by
2201:IBM
1685:IBM
1639:IBM
1614:IBM
1589:IBM
1564:IBM
1539:IBM
1514:IBM
1468:IBM
1443:IBM
1418:IBM
1371:IBM
1226:190
1146:FFh
1142:IBM
1138:00h
1134:OEM
1127:30h
1122:21h
950:Y2K
922:XDF
829:APM
503:7.0
493:6.3
483:6.1
473:5.0
463:4.0
423:3.0
403:2.0
383:1.0
318::
288:DOS
276:IBM
258:or
189:x86
87:DOS
61:IBM
3287::
2558:,
2407:,
2318:.
2228:.
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2117:.
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1933:;
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