Category : Communication (modem) tools and utilities
Archive   : DSZWIN.ZIP
Filename : WINDSZ.TXT

Output of file : WINDSZ.TXT contained in archive : DSZWIN.ZIP

DSZ & Microsoft Windows 3/14/1988

Running DSZ With Micosoft Windows 2.03

DSZ can be an inexpensive alternative to the few (but growing!)
number of comm programs out there that run under Windows. As on
now, the only comm programs that run under Windows are Palantir's
InTalk and the commercial and public domain versions of Proteus.
Proteus will not even run under Windows 2.03 so that is out.
Palantir's powerful InTalk is quite expensive, even though it has
the ability to create script files. You could of course run
Qmodem or ProComm Plus Test Drive under Windows, in a window, but
these are DOS applications and therefore will not background too
nicely... Those are out. The answer? Windows Terminal combined
with DSZ!

This unlikely combination works out very nicely in the end. DSZ
does not take over the screen, so it can run in a window. DSZ has
Zmodem, Y-Modem, and X-Modem protocols implemented in it so the
flexibility is there. The latest version can even act as a
small terminal with auto Zmodem downloading. Speed? Well DSZ
Zmodem is the fastest protocol around. Even under Windows 2.03
you can expect 112 cps & up (at 1200 baud). This speed is perhaps
5 to 7 cps slower than what you would get with downloading with
Qmodem and DSZ. But that is because it must go through Windows,
then to DSZ. That's the price you pay for background transfers! I
would no recommend doing an Excel recalc while doing a 100K

Setting up the DSZ PIF

To begin, you must create the DSZ PIF file with the PIFEDIT.EXE
program included with Windows. I went ahead and ARCed the PIF
file with this text file for you. The key to the PIF file is NOT
to check the com ports in the "Directly modifies" section. If you
do, Windows will give you a ! message saying that an applica-
tion is already using COM2 or whatever. When you use DSZ for an
upload or download it "captures" the modem carrier from the
"parent" program. The parent program does not know what is going
on while it does this. Kind of like a TSR, but not as volatile!
In the parameters part of the PIF file type a question mark (?).
This makes Windows prompt you for parameters when you double
click on the PIF or COM file in the MS-DOS executive. Then in the
box you can put

port 2 rz (use port 2, receive via Zmodem)
port 1 t (use port 2, talk to host)
etc... (more examples can be found in the
DSZ.DOC file included with DSZ)

Also, don't select the "Close window on exit?" box. If you do,
Windows will close the windows before you have a chance to read


DSZ & Microsoft Windows 3/14/1988

any error messages. The DSZ.DOC file states that DSZ can run in
"a modest window" of 66k under Desqview. As far as I know, I'm
the first one to play with it under Windows so I went ahead and
used 66k in both of the memory boxes in the PIF file.


Now you can add X-Modem, Z-Modem, and Y-Modem to the Terminal
program included with Windows! It works very nicely. To do it,
just set up terminal to dial your favorite BBS, on your correct
com port. Then connect, and through all the formalities to
download. When the host says ready to download, double click on
DSZ.PIF in the MS-DOS Manager. A small dialog box should pop up
prompting you for parameters. If it does not, disconnect and
check your DSZ.PIF file to make sure that there is a question (?)
mark in the prompting box of the PIF file. In the dialog box type
"port x" and the necessary arguments and parameters IN LOWER
CASE. A DSZ box will pop up, DSZ will print it's information, and
then proceed to do the file transfer. I'm not sure how Windows
2.03 uses the DOS environment, so it may be a good idea to type
in the port parameter for good measure. If you don't, DSZ will
default to COM1, which in my case is my mouse. Nothing's going to
come from there! It would really be nice if the Terminal program
had the ability to be closes, but did not drop the carrier. I
tried to do a download with DSZ and Terminal. DSZ was doing a
Zmodem download so I tried to see if Terminal would drop carrier.
It promptly did, and froze the computer too.


Using DSZ with other small comm programs

You can use the "t" (alk) option of DSZ to create a small ter-
minal by itself with auto-Z-modem download capabilities. (The
registered version has ANSI terminal capabilities.) To do this
you must have a small utility to talk to your modem from the MS-
DOS command line. I used a small pair of utilities by Donavon
Kuhn & Jon Niedfeldt called AT.COM and DTR.COM. These utilities
are used to control your modem from the DOS command line, or in
our case, a window. To use these you must create PIF files for
each of the programs. They do not take over the screen. Again,
place a question mark (?) in the parameters field so that Windows


DSZ & Microsoft Windows 3/14/1988

will ask you for parameters. (I have included the PIF files for
you.) Now for the fun part! DTR.COM allows you to talk to your
modem. You MUST run this first so that the modem knows that you
are trying to talk to it. When you double click on the PIF file
it will ask you for parameters. I put:

com2: on (Turns DTR on in COM2)
com2: off (Turns DTR off on COM2)

Note, if you don't specify any parameter, DTR will proceed to
tell you how to use itself. (Same with AT.COM.) The AT.COM PIF
file is set up the same way. Don't check the com ports in the PIF
file for either of them. AT.COM allows you to sent commands to
your modem. To dial up Hound's Haven in New Hartford, CT, you
would click on AT.PIF and enter DT 1-203-738-0306 in the box.
The little program will dial the number, then quit. Now you
must catch the carrier with DSZ. Double click on DSZ, enter
"port x t" in the box, and you will now have a very small Z-modem
terminal which you can use as any other terminal. You can use
COMMAND.COM running in a window to dial out also. Just enter


Then run DSZ to pick up the carrier.


Those are just a few ways of using DSZ with Windows 2.03. It's a
quick and easy, assuming you know how to use DSZ, way to add
background file transfer to Windows. It would be interesting if a
developer took DSZ and built a small Windows interface around it.
(hint! Any takers of the project??) You could also add other ex-
ternal protocols to Windows, such as CIS QuickB or Megalink, but
how much memory they use and whether or not they can be back-
grounded is up to the author. Please send any suggestions,
PIF files, applause, or comments to:

Hound's Haven BBS (The BEST place to find Windows p.d. Software!)
c/o Bryan Kinkel
New Hartford, CT
(203) 738-0306

DSZ is available from Hound's Haven
AT.COM and DTR.COM are available from Hound's Haven in the file

Bryan Kinkel
Simsbury, CT


  3 Responses to “Category : Communication (modem) tools and utilities
Archive   : DSZWIN.ZIP
Filename : WINDSZ.TXT

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: