Home of the original IBM PC emulator for browsers.
Released in 1984 by COMPAQ Computer Corp, this early version of MS-DOS displays the following messages on boot:
The COMPAQ Personal Computer MS-DOS
Version 2.11
(C) Copyright COMPAQ Computer Corp. 1982, 83, 84
(C) Copyright Microsoft 1981, 82, 83
A directory listing of the diskette is provided below. We also have copies of the original COMPAQ MS-DOS Version 2 Documentation.
[PCjs Machine "ibm5160-compaq211"]
Waiting for machine "ibm5160-compaq211" to load....
Volume in drive A is COMPAQ DOS
Directory of A:\
IBMBIO COM* 5120 5-30-84 12:00p
IBMDOS COM* 17408 5-30-84 12:00p
COMMAND COM 18272 5-30-84 12:00p
ANSI SYS 1593 5-30-84 12:00p
FORMAT COM 6496 5-30-84 12:00p
CHKDSK COM 6468 5-30-84 12:00p
SYS COM 1600 5-30-84 12:00p
DISKCOPY COM 2122 5-30-84 12:00p
DISKCOMP COM 1850 5-30-84 12:00p
COMP COM 2259 5-30-84 12:00p
EDLIN COM 8096 5-30-84 12:00p
MODE COM 3342 5-30-84 12:00p
FDISK COM 5760 5-30-84 12:00p
BACKUP COM 5097 5-30-84 12:00p
RESTORE COM 5217 5-30-84 12:00p
PRINT COM 4506 5-30-84 12:00p
RECOVER COM 2439 5-30-84 12:00p
ASSIGN COM 946 5-30-84 12:00p
TREE COM 2122 5-30-84 12:00p
GRAPHICS COM 702 5-30-84 12:00p
SORT EXE 1632 5-30-84 12:00p
FIND EXE 6331 5-30-84 12:00p
MORE COM 4380 5-30-84 12:00p
BASIC COM 1074 5-30-84 12:00p
BASICA COM 1072 5-30-84 12:00p
BASICA EXE 64240 5-30-84 12:00p
EXE2BIN EXE 1649 5-30-84 12:00p
LINK EXE 42368 5-30-84 12:00p
DEBUG COM 12171 5-30-84 12:00p
DEMO BAT 14 5-30-84 12:00p
DEMO BAS 5447 5-30-84 12:00p
DEMO1 BAS 15114 5-30-84 12:00p
DEMO2 BAS 15261 5-30-84 12:00p
DEMO3 BAS 20987 5-30-84 12:00p
DEMO4 BAS 4977 5-30-84 12:00p
USA DAT 16128 5-30-84 12:00p
TEST EXE 19502 5-30-84 12:00p
INTEREST BAS 384 5-30-84 12:00p
WORDS 1306 5-30-84 12:00p
39 file(s) 335452 bytes
7168 bytes free
Unlike COMPAQ’s 1.x releases, which used system files IOSYS.COM
and MSDOS.COM
, COMPAQ switched to IBM’s naming convention: IBMBIO.COM
and IBMDOS.COM
. However, COMPAQ opted to use an OEM signature of CCC 2.1
instead of IBM 2.0
.
The boot sector of the COMPAQ MS-DOS 2.11 disk image contains the following bytes:
00000000 eb 35 90 43 43 43 20 20 32 2e 31 00 02 02 01 00 |.5.CCC 2.1.....|
00000010 02 70 00 d0 02 fd 02 00 09 00 02 00 00 00 df 02 |.p..............|
00000020 25 02 09 2a ff 50 f6 00 02 00 00 00 00 00 00 00 |%..*.P..........|
00000030 00 be 8c 01 e9 15 01 c4 5c 08 33 ed b8 c0 07 8e |........\.3.....|
00000040 d8 0a d2 79 12 89 1e 29 00 8c 06 2b 00 88 16 2d |...y...)...+...-|
00000050 00 c7 06 2f 00 02 00 8e c5 8e d5 bc 00 7c fc bf |.../.........|..|
00000060 78 00 b8 1e 00 ab 8c d8 ab a1 16 00 d1 e0 40 01 |x.............@.|
00000070 06 29 00 11 2e 2b 00 e8 67 00 bb 00 05 53 b0 01 |.)...+..g....S..|
00000080 e8 94 00 5f be 76 01 b9 0b 00 f3 a6 75 a3 83 c7 |..._.v......u...|
00000090 15 b1 0b f3 a6 75 9a a1 11 00 b1 04 d3 e8 01 06 |.....u..........|
000000a0 29 00 11 2e 2b 00 ff 36 29 00 c4 1e 72 01 e8 30 |)...+..6)...r..0|
000000b0 00 00 06 2e 00 e8 5f 00 01 06 29 00 11 2e 2b 00 |......_...)...+.|
000000c0 80 3e 2e 00 11 72 e7 cd 11 d1 e0 d1 e0 80 e4 03 |.>...r..........|
000000d0 b9 02 00 74 04 fe c4 8a cc a1 2f 00 5b ff 2e 72 |...t....../.[..r|
000000e0 01 a1 18 00 f6 26 1a 00 91 a1 29 00 8b 16 2b 00 |.....&....)...+.|
000000f0 f7 f1 92 8b 0e 18 00 f6 f1 fe c4 86 cc d0 ce d0 |................|
00000100 ce 0a ce 8a ea 8a f0 8a 16 2d 00 51 80 e1 3f 2a |.........-.Q..?*|
00000110 e1 fe c4 8a c4 59 c3 98 96 56 bf 05 00 b8 01 02 |.....Y...V......|
00000120 cd 13 72 0a 80 c7 02 fe c1 4e 75 f1 58 c3 80 fc |..r......Nu.X...|
00000130 11 75 0f 1e b8 00 c8 8e d8 81 3e ea 1f 43 4f 1f |.u........>..CO.|
00000140 74 e2 33 c0 cd 13 4f 75 d4 be d6 01 e8 1d 00 be |t.3...Ou........|
00000150 ac 01 e8 17 00 33 c0 cd 16 26 c7 06 72 04 34 12 |.....3...&..r.4.|
00000160 ea 00 00 ff ff b4 0e bb 07 00 cd 10 ac 3c 24 75 |.............<$u|
00000170 f4 c3 00 00 70 00 49 42 4d 42 49 4f 20 20 43 4f |....p.IBMBIO CO|
00000180 4d 49 42 4d 44 4f 53 20 20 43 4f 4d 0a 0d 4e 6f |MIBMDOS COM..No|
00000190 6e 2d 53 79 73 74 65 6d 20 64 69 73 6b 20 6f 72 |n-System disk or|
000001a0 20 64 69 73 6b 20 65 72 72 6f 72 24 0a 0d 52 65 | disk error$..Re|
000001b0 70 6c 61 63 65 20 61 6e 64 20 73 74 72 69 6b 65 |place and strike|
000001c0 20 61 6e 79 20 6b 65 79 20 77 68 65 6e 20 72 65 | any key when re|
000001d0 61 64 79 0a 0d 24 0a 0d 44 69 73 6b 20 62 6f 6f |ady..$..Disk boo|
000001e0 74 20 66 61 69 6c 75 72 65 24 43 6f 70 72 2e 20 |t failure$Copr. |
000001f0 43 4f 4d 50 41 51 20 31 39 38 33 2c 38 34 55 aa |COMPAQ 1983,84U.|