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Home of the original IBM PC emulator for browsers.

IBM PC DOS 2.00

PC DOS 2.00 was released in March 1983.

Directory Listings of the two 360Kb distribution diskettes, Documentation, and Feature Summary are provided below.

[PCjs Machine "ibm5160-pcdos200"]

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Directory of PC DOS 2.00 (Disk 1)

 Volume in drive A has no label
 Directory of A:\

IBMBIO   COM*     4608   3-08-83  12:00p
IBMDOS   COM*    17152   3-08-83  12:00p
COMMAND  COM     17664   3-08-83  12:00p
ANSI     SYS      1664   3-08-83  12:00p
FORMAT   COM      6016   3-08-83  12:00p
CHKDSK   COM      6400   3-08-83  12:00p
SYS      COM      1408   3-08-83  12:00p
DISKCOPY COM      2444   3-08-83  12:00p
DISKCOMP COM      2074   3-08-83  12:00p
COMP     COM      2523   3-08-83  12:00p
EDLIN    COM      4608   3-08-83  12:00p
MODE     COM      3139   3-08-83  12:00p
FDISK    COM      6177   3-08-83  12:00p
BACKUP   COM      3687   3-08-83  12:00p
RESTORE  COM      4003   3-08-83  12:00p
PRINT    COM      4608   3-08-83  12:00p
RECOVER  COM      2304   3-08-83  12:00p
ASSIGN   COM       896   3-08-83  12:00p
TREE     COM      1513   3-08-83  12:00p
GRAPHICS COM       789   3-08-83  12:00p
SORT     EXE      1280   3-08-83  12:00p
FIND     EXE      5888   3-08-83  12:00p
MORE     COM       384   3-08-83  12:00p
BASIC    COM     16256   3-08-83  12:00p
BASICA   COM     25984   3-08-83  12:00p
       25 file(s)     143469 bytes
                       31232 bytes free

Directory of PC DOS 2.00 (Disk 2)

 Volume in drive A has no label
 Directory of A:\

EXE2BIN  EXE      1664   3-08-83  12:00p
LINK     EXE     39936   3-08-83  12:00p
DEBUG    COM     11904   3-08-83  12:00p
ART      BAS      1920   3-08-83  12:00p
SAMPLES  BAS      2304   3-08-83  12:00p
MORTGAGE BAS      6272   3-08-83  12:00p
COLORBAR BAS      1536   3-08-83  12:00p
MUSIC    BAS      8704   3-08-83  12:00p
DONKEY   BAS      3584   3-08-83  12:00p
CIRCLE   BAS      1664   3-08-83  12:00p
PIECHART BAS      2304   3-08-83  12:00p
SPACE    BAS      1920   3-08-83  12:00p
BALL     BAS      2048   3-08-83  12:00p
COMM     BAS      4352   3-08-83  12:00p
       14 file(s)      90112 bytes
                       87040 bytes free

Documents

IBM PC Disk Operating System 2.00
[Source]

Feature Summary

New features:

Subdirectory support
Volume label support
Device driver support (device driver command codes 00h-0Ch)
File handle support
I/O redirection support
Simple memory management and MCBs
Environment variables (COMMAND.COM uses COMSPEC, PATH and PROMPT)
BIOS parameter block (BPB) support
180KB single-sided and 360KB double-sided floppy disk support
Hard disk support up to 10MB (FAT12: partition type 01h)
File attributes: volume label (08h), subdirectory (10h) and archive (20h)
Zero byte indicates end of directory to speed up searches
Print spooler
Internal block device driver for disks
Parent PSP segment, job file table and environment segment added to PSP
Current directories are appended to each DPB
SYSVARS and SFT structures
Disk buffering

New CONFIG.SYS commands:

AVAILDEV
BREAK
BUFFERS
DEVICE
FILES
SHELL
SWITCHAR

New internal commands:

BREAK
CHDIR (CD)
CLS
CTTY
ECHO
EXIT
FOR
GOTO
IF
MKDIR (MD)
PATH
PROMPT
RMDIR (RD)
SET
SHIFT
VER
VERIFY
VOL

New external commands:

ASSIGN
BACKUP
FDISK
FIND
GRAPHICS
MORE
PRINT
RECOVER
RESTORE
SORT
TREE

New internal character devices:

AUX
CLOCK$
COM1
COM2
CON
LPT1
LPT2
LPT3
NUL
PRN

New device drivers:

ANSI.SYS

New functions:

INT 21h functions 2Fh-57h
INT 21h function 4Bh (execute or load program) implemented in COMMAND.COM
INT 25h, INT 26h, INT 27h now implemented in the DOS kernel
INT 28h idle call
INT 29h fast console output
INT 2Eh reload transient (COMMAND.COM)
INT 2Fh PRINT support

[GitHub Source]