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2003-04-04
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This list is far from complete. Please e-mail me <steve@dosius.zzn.com> with comments.
APPEND 3.3,X
/X syntax extended, /PATH added 5.0
ASSIGN 2.0,X (Fundamentally unchanged)
ATTRIB 3.0,X
H and S attribs added 5.0
BACKUP 2.0,X
Removed 6.0, replaced with MSBACKUP (crippled Norton Backup)
CHKDSK 1.0,X
/F, /V added 2.0
CHOICE 6.0,X (Fundamentally unchanged)
The program, for some strange reason, checks for DOS 4 (!) as the
minimum OS required. However, I have cajoled it into running on
DOSPLUS, which claims DOS 2.11 compatibility (and isn't too good
at that either).
COMP 1.0,X
Rewritten 5.0, switches were not supported before then
Removed 6.0
DEBUG 1.0,X
Mini-assembler added 2.0
DEFRAG 6.0,X (Fundamentally unchanged)
DELTREE 6.0,X (Fundamentally unchanged)
DISKCOMP 1.0,X
/1 added 1.1, /8 added 2.0
DISKCOPY 1.0,X
/1 added 1.1, /8 added 2.0
DISPLAY.SYS 3.3,D (Fundamentally unchanged)
DRIVER.SYS 3.2,D (Fundamentally unchanged)
FASTHELP 5.0,X (was called HELP in 5; current name from 6.0)
FASTOPEN 3.3,X (Fundamentally unchanged)
FC 2.11,X (Fundamentally unchanged)
"Special Edition Using MS-DOS 6.22 Second Edition" says this is new
to 3.3 - sorry, but that's false. Before IBM DOS 5.0, it was only
included with Microsoft's version of DOS; however, I have found FC
in Tandy, Osborne and Victor OEM versions of DOS 2.11. It was
certainly not included in DOS 1.25, although a similar program
called FILCOM is present in the Corona OEM and bears a Microsoft
copyright. I also spotted FC in Seiko-Epson MS-DOS 3.2.
FDISK 2.0,X
This wasn't included in a lot of early OEM versions of DOS (prior
to 3.2, anyway). Some OEMs rolled their own FDISK replacements,
such as Zenith. IBM uses a different codebase from MS, although
their programs are similar in interface.
FIND 2.0,X (Fundamentally unchanged until PC DOS 7)
FORMAT 1.0,X
/V modified 4.0
/Q, /U added 5.0
/N, /T added 3.3
/8 added 2.0
/4 added 3.1
/1 added 1.1
Undocumented switch /H in DOS 3.30 only?
Undocumented switches /AUTOTEST, /BACKUP, /SELECT in 4.0
and later; some combinations of these switches do not
work in 4.0-6.22 or in 95> but do work in PC DOS 7.
Prior to version 2, the syntax for FORMAT varied dramatically from
machine to machine. Zenith MS-DOS 1.25 had a whole slew of options
that were not in standard FORMAT; one /C option looked to be similar
to the /Q option provided in DOS 5!
GRAFTABL 3.0,X
Removed 6.0
GRAPHICS 2.0,X
Some formats and switches added around DOS 3.2?
Extended with additional formats and external config file
in DOS 4.0
HELP 6.0,X
JOIN 3.2,X
KBDBUF.SYS DOS 6 Supplemental,D
KEYB 3.3,X
LABEL 3.0,X
MEM 4.0,X
Rewritten for DOS 5. DOS 4 accepts the /DEBUG, /PROGRAM switches;
DOS 5 takes these plus /CLASSIFY; DOS 6 removes /PROGRAM and adds
/PAGE, /FREE and /MODULE module. All switches can be abbreviated
to one letter.
MODE 1.1,X
Over time, MODE has evolved to support new DOS features. This are
frequent and I am not going to mention the differences from version
to version. There are also so many different functions, and I
expect these are well-known already.
MORE 2.0,X
Windows 95 takes an optional filename; AFAIK no other versions of
DOS support that syntax (FD excluded). Also, in DR DOS, MORE is
an internal command (!).
MOVE 6.0,X
MSCDEX 6.0,X
MSD 6.0,X
MSHERC 5.0,X
Only in 5.0 and various versions of MS compiled BASIC
This program provides a BIOS extension (mode 8 for int10?) which
can be used to easily access the graphics mode on the Hercules
video adapter. It has no use on other systems. There is one
switch, /HALF, which prevents the CGA memory area from being used
as Hercules memory (?). It is mainly for programs written in
variants of QuickBasic 4 and later (including VBDOS 1 and QBasic).
NLSFUNC 3.3,X
PRINT 2.0,X
RECOVER 2.0,X
This is so dangerous that it's not even on DOS 6's Supplemental
Disk! Actually, SCANDISK has assumed the functionality of RECOVER
and does a much better job.
REPLACE 3.2,X
RESTORE 2.0,X
SCANDISK 6.2,X
SORT 2.0,X
SUBST 3.1,X
SYS 1.0,X
Before DOS 5, COMMAND.COM was not copied by SYS. There are
additional restrictions prior to DOS 4.
TREE 2.0,X
Rewritten 4.0
UNDELETE 5.0,X
Crippled except in PC DOS 7
UNFORMAT 5.0,X
XCOPY 3.2,X