2.00

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page	IBM PC DOS 2.00	/disks/pcx86/dos/ibm/2.00/	id type config resume autoMount autoType ibm5160-pcdos200 pcx86 /devices/pcx86/machine/5160/cga/256kb/machine.xml 1 A B name PC DOS 2.00 (Disk 1) name PC DOS 2.00 (Disk 2) $date\r$time\r

IBM PC DOS 2.00

PC DOS 2.00 was released in March 1983.

A Feature Summary, along with Directory Listings of the two 360Kb distribution diskettes, are provided below.

{% include machine.html id="ibm5160-pcdos200" %}

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

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)     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)     87040 bytes free