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1993-11-30
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JP Software
4DOS 5.0 rev A ==> 5.0 rev B Patch Documentation
November 30, 1993
Copyright 1988 - 1993, JP Software Inc., All Rights Reserved. Published
by JP Software Inc., P.O. Box 1470, E. Arlington, MA 02174 USA, (617)
646-3975. 4DOS is a registered trademark of JP Software Inc.
This file explains how to install the 4DOS 5.0 rev B patch.
To use the patch, you must have JP Software's PATCH.EXE program. This
program is in a separate file, PATCH.ZIP (on CompuServe) or 4DPATCH.ZIP
(on bulletin boards and the Internet).
To use this patch, copy the PAT50B.RTP file to the directory where your
4DOS.COM file for version 5.0 rev A is stored. Make sure JP Software's
PATCH.EXE is in the same directory, or in a directory on your PATH, then
enter the command:
patch pat50b
The patch update converts your current copy of 4DOS 5.0 rev A to version
5.0 rev B. It modifies 4DOS.COM, 4DOS.DOC, 4DOS.HLP, 4HELP.EXE, and
UPDAT50.DOC. If you run the patch in a directory which does not contain
all of these files, PATCH will report some errors, but the files that
are present will be patched correctly. If this occurs you can copy the
missing files to the patch directory and and re-run the patch; PATCH will
detect the files that were patched the first time, and will not attempt
to re-patch them.
Branding (name and serial number) information in your 4DOS.COM file will
be preserved in the modified file. Any changes you have made to the
help colors with HELPCFG will also be preserved in the modified
4HELP.EXE. All modified files will show a new date and time
(11-30-93 at 5:00 am).
If you want to test 4DOS.COM to make sure the patch worked, use the
VER /R command. This command will report "4DOS Revision A" or "4DOS
Revision B" in its output.
Version 5.0 revision B fixes the following minor bugs and anomalies in
version 5.0 revision A:
* The DO command had several minor anomalies:
- The UNTIL test was reversed.
- The condition did not work if == was used with no spaces
around it.
- ITERATE would give "Unknown command ENDDO" errors under
certain conditions if used in a DO UNTIL.
* The IF and IFF commands did not properly handle a condition which
included a variable function, if there was an .AND. or .OR.
later in the command.
* The INPUT /E command did not use the existing variable value
if the variable name was over 8 characters long.
* The LOG /H ON command did not work properly.
* Aborting a batch file with Ctrl-C did not work properly if you
entered "Y" to the "Cancel batch job" prompt ("N" and "A"
responses did work).
* The %@REPEAT variable function would crash 4DOS if the second
argument (the count) was negative.
* The DirWinOpen, ListHex, and ListInfo directives in 4DOS.INI did
not work properly.
* There were several minor cosmetic problems in the help system.
Also the documentation for DO UNTIL has been revised to explain how
the test works more clearly.
* There were a couple of typographical errors in 4DOS.DOC and
UPDAT50.DOC.