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IBMDOS.COM

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959: 22: 923: 934: 366:/* 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 */ 293:
In case no source drive and path is given, SYS will assume the system files to reside on the drive containing the SYS.COM program. If this is a local drive, it will try to locate them in the root of this drive, otherwise it will search for them in the SYS.COM directory itself. /K Keep original
100:(from version 1.10 to 6.22) for the same purpose. DR DOS 3.31 to 3.41 used the equivalent DRBDOS.SYS file instead. (For compatibility purposes with some DOS applications the IBMDOS.COM file name was briefly also used by the IBM version of 256: 395: 1000: 306: 142:
attribute is set to keep the file from being accidentally invoked at the command prompt, which would lead to a crash. This is not necessary for
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also containing a tiny COM-style stub just displaying some version info and exiting gracefully when loaded inappropriately.
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attributes of system files (else set to +RSH). /3 or /5 Name either DRBIOS.SYS/DRBDOS.SYS or IBMBIO.COM/IBMDOS.COM.
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during the boot process, it contains the hardware-independent parts of the operating system, including the embedded
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set. As IBMDOS.COM is a binary image containing executable code rather than a true
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terminology, the kernel component of the operating system is called the
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DR-DOS 7.03 WHATSNEW.TXT - Changes from DR-DOS 7.02 to DR-DOS 7.03
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CP/M 1.1 or 1.2 BIOS and BDOS for Lawrence Livermore Laboratories
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file system specific code is called the FDOS in DRI terminology.
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of the bootable drive/partition (normally C:\) and has the
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and higher, because under these systems the file is a
299: 234: 232: 230: 228: 1011: 403: 330: 346:An excerpt of the BDOS.PLM file header in the 267: 265: 263: 225: 994: 389: 16:System file (DOS kernel) in PC DOS and DR-DOS 185:as well when referring to the kernel of the 260: 1001: 987: 933: 396: 382: 92:and higher (except for DR-DOS 7.06), with 73:code, as well as the code to provide the 20: 336: 115:By default, the file is located in the 1012: 50:. Loaded and initially invoked by the 377: 953: 278:MoHPC - the Museum of HP Calculators 271: 238: 13: 14: 1041: 272:Paul, Matthias R. (2017-08-14) . 239:Paul, Matthias R. (1997-10-02) . 957: 932: 922: 921: 360:Lawrence Livermore Laboratories 284:from the original on 2017-10-06 165:), a term originally coined by 1: 218: 973:. You can help Knowledge by 108:OS/2 kernel file as used by 66:and, in newer versions, the 7: 464:Multitasking MS-DOS 4.0/4.1 196: 163:Basic Disk Operating System 10: 1046: 952: 874:Technical Support SuperDOS 315:1998-12-24. Archived from 917: 651: 524: 421: 412: 104:, where it resembled the 213:List of DOS system files 43:is the filename of the 28:(second in the list of 1030:Operating system stubs 969:-related article is a 574:Datapac System Manager 405:Disk operating systems 189:operating system. The 181:). Microsoft has used 37: 24: 138:-style program, the 734:DEC BATCH-11/DOS-11 413:MS-DOS, IBM PC DOS, 338:Kildall, Gary Arlen 80:The file exists in 714:Concurrent DOS V60 709:Concurrent DOS 68K 554:Concurrent CP/M-86 415:compatible systems 175:Concurrent DOS 286 38: 982: 981: 947: 946: 454: 453: 77:to applications. 1037: 1003: 996: 989: 967:operating-system 961: 954: 936: 935: 925: 924: 419: 418: 398: 391: 384: 375: 374: 368: 364: 334: 328: 327: 325: 324: 303: 297: 296: 290: 289: 269: 258: 255: 253: 252: 243:. Archived from 236: 155:Digital Research 27: 1045: 1044: 1040: 1039: 1038: 1036: 1035: 1034: 1010: 1009: 1008: 1007: 950: 948: 943: 913: 652:Other platforms 647: 604:NetWare PalmDOS 520: 450: 414: 408: 402: 372: 371: 367: 350:source code of 335: 331: 322: 320: 305: 304: 300: 287: 285: 270: 261: 250: 248: 237: 226: 221: 199: 132:file attributes 25: 17: 12: 11: 5: 1043: 1033: 1032: 1027: 1022: 1006: 1005: 998: 991: 983: 980: 979: 962: 945: 944: 942: 941: 930: 918: 915: 914: 912: 911: 906: 901: 896: 891: 886: 881: 876: 871: 866: 861: 856: 851: 846: 841: 836: 831: 826: 821: 816: 811: 806: 801: 796: 791: 786: 781: 776: 771: 766: 761: 756: 751: 746: 741: 736: 731: 726: 721: 716: 711: 706: 701: 696: 691: 686: 681: 676: 671: 666: 661: 655: 653: 649: 648: 646: 641: 636: 631: 626: 621: 616: 611: 606: 601: 596: 591: 586: 581: 576: 571: 566: 561: 559:Concurrent DOS 556: 551: 546: 541: 536: 531: 529: 522: 521: 519: 518: 513: 508: 503: 498: 493: 488: 483: 478: 473: 472: 471: 466: 455: 452: 451: 449: 448: 443: 438: 433: 428: 416: 410: 409: 401: 400: 393: 386: 378: 370: 369: 365: 329: 298: 259: 223: 222: 220: 217: 216: 215: 210: 205: 198: 195: 117:root directory 15: 9: 6: 4: 3: 2: 1042: 1031: 1028: 1026: 1023: 1021: 1018: 1017: 1015: 1004: 999: 997: 992: 990: 985: 984: 978: 976: 972: 968: 963: 960: 956: 955: 951: 940: 931: 929: 920: 919: 916: 910: 907: 905: 902: 900: 897: 895: 892: 890: 887: 885: 882: 880: 877: 875: 872: 870: 867: 865: 862: 860: 857: 855: 852: 850: 849:Sinclair QDOS 847: 845: 842: 840: 837: 835: 832: 830: 827: 825: 822: 820: 817: 815: 812: 810: 807: 805: 802: 800: 797: 795: 792: 790: 787: 785: 782: 780: 777: 775: 772: 770: 767: 765: 762: 760: 757: 755: 752: 750: 747: 745: 742: 740: 737: 735: 732: 730: 727: 725: 722: 720: 717: 715: 712: 710: 707: 705: 704:Commodore DOS 702: 700: 697: 695: 692: 690: 687: 685: 682: 680: 677: 675: 672: 670: 667: 665: 662: 660: 657: 656: 654: 650: 645: 642: 640: 637: 635: 632: 630: 627: 625: 622: 620: 617: 615: 612: 610: 607: 605: 602: 600: 599:Multiuser DOS 597: 595: 592: 590: 587: 585: 582: 580: 577: 575: 572: 570: 567: 565: 562: 560: 557: 555: 552: 550: 547: 545: 542: 540: 537: 535: 532: 530: 528: 523: 517: 514: 512: 509: 507: 504: 502: 499: 497: 494: 492: 489: 487: 484: 482: 479: 477: 474: 470: 467: 465: 462: 461: 460: 457: 456: 447: 444: 442: 439: 437: 434: 432: 429: 427: 424: 423: 420: 417: 411: 406: 399: 394: 392: 387: 385: 380: 379: 376: 363: 361: 357: 353: 349: 343: 340:(June 1975), 339: 333: 319:on 2019-04-08 318: 314: 313:Caldera, Inc. 310: 309: 302: 295: 283: 279: 275: 268: 266: 264: 257: 247:on 2003-10-04 246: 242: 235: 233: 231: 229: 224: 214: 211: 209: 206: 204: 201: 200: 194: 192: 188: 184: 180: 176: 172: 168: 164: 160: 156: 151: 149: 145: 141: 137: 133: 130: 126: 122: 118: 113: 111: 107: 103: 99: 95: 91: 87: 83: 78: 76: 72: 69: 65: 61: 57: 53: 52:DOS BIOS 49: 46: 42: 35: 31: 23: 19: 975:expanding it 964: 949: 724:Cromemco DOS 679:Apple ProDOS 345: 341: 332: 321:. Retrieved 317:the original 307: 301: 292: 286:. Retrieved 277: 249:. Retrieved 245:the original 169:in 1975 for 167:Gary Kildall 152: 139: 128: 124: 120: 114: 79: 40: 39: 18: 869:SpartaDOS X 144:DR-DOS 7.02 71:file system 1020:DOS kernel 1014:Categories 619:PC-MOS/386 609:Novell DOS 506:SISNE plus 496:Novell DOS 476:IBM PC DOS 436:Comparison 323:2019-04-08 288:2017-10-06 251:2009-03-29 219:References 203:IBMBIO.COM 148:fat binary 106:OS2DOS.COM 90:DR DOS 5.0 82:PC DOS 1.0 56:IBMBIO.COM 41:IBMDOS.COM 34:IBM PC DOS 26:IBMDOS.COM 1025:DOS files 864:SpartaDOS 819:NewDos/80 694:Atari TOS 689:Atari DOS 684:Apple SOS 674:Apple DOS 208:MSDOS.SYS 183:this name 125:read-only 110:Microsoft 98:MSDOS.SYS 30:COM files 928:Category 894:TurboDOS 859:SmartDOS 799:MicroDOS 659:AmigaDOS 644:TurboDOS 639:Towns OS 584:K8918-OS 579:DOS Plus 469:MS-DOS 7 441:Commands 431:Timeline 356:CP/M 1.2 352:CP/M 1.1 282:Archived 197:See also 102:OS/2 1.0 909:Z80-RIO 879:Top-DOS 834:RealDOS 809:MSX-DOS 744:DOS/360 739:DIP DOS 729:CSI-DOS 634:SCP1700 624:REAL/32 614:OpenDOS 594:MP/M-86 564:CP/M-86 539:4690 OS 534:4680 OS 516:FreeDOS 511:PTS-DOS 501:ROM-DOS 187:MSX-DOS 75:DOS API 937:  926:  889:TRSDOS 884:TR-DOS 784:iS-DOS 774:IDEDOS 769:GEMDOS 749:DOS XL 699:BW-DOS 664:AMSDOS 589:FlexOS 544:86-DOS 525:Other 486:DR-DOS 459:MS-DOS 362:(LLL): 179:FlexOS 140:hidden 129:system 127:, and 121:hidden 96:using 94:MS-DOS 48:kernel 965:This 904:Z-DOS 839:SB-80 829:PTDOS 814:MyDOS 779:IMDOS 669:ANDOS 629:SB-86 491:H-DOS 481:DOS/V 446:Games 407:(DOS) 68:FAT32 64:FAT16 60:FAT12 32:) in 971:stub 939:List 899:UDOS 854:RDOS 824:OS/M 804:MP/M 794:MDOS 789:ISIS 764:FLEX 754:Edos 719:CP/M 569:CP/K 549:ADOS 358:for 348:PL/M 177:and 171:CP/M 159:BDOS 88:and 86:7.10 36:1.0. 844:SCP 759:EOS 527:x86 426:API 354:or 191:FAT 153:In 136:COM 112:.) 84:to 54:in 45:DOS 1016:: 344:, 311:. 291:. 280:. 276:. 262:^ 227:^ 123:, 62:, 1002:e 995:t 988:v 977:. 397:e 390:t 383:v 326:. 254:. 161:(

Index


COM files
IBM PC DOS
DOS
kernel
DOS BIOS
IBMBIO.COM
FAT12
FAT16
FAT32
file system
DOS API
PC DOS 1.0
7.10
DR DOS 5.0
MS-DOS
MSDOS.SYS
OS/2 1.0
OS2DOS.COM
Microsoft
root directory
file attributes
COM
DR-DOS 7.02
fat binary
Digital Research
BDOS
Basic Disk Operating System
Gary Kildall
CP/M

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