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1987-12-10
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Z-MODEM with Procomm
Z-modem is a super fast file transfer protocol. It supports
a crash recovery feature that enables you to pick up where you
left of should you have to abort the transfer for any reason. I
recommend using it whenever possible.
Many think, well my terminal program doesn't include Z-modem,
so I won't be able to take advantage of it. Wrong. With this
mini-tutorial perhaps I can help you to use Z-Modem. Although
this is titled as Zmodem for Procomm, these procedures will work
equally well with TELIX, Qmodem, or any other terminal program
that allows a "JUMP to DOS". And if you use BOYAN simply place
DSZ.COM the same directory and it will pop up on your protocol
list the next time you go to upload or download.
You should find the following files in ZPACK.ARC
ZPACK.DOC.....This file
RZ.BAT........For receiving files with hard disk.
RZF.BAT.......For receiving files with floppy disk.
SZ.BAT........For sending files with either system.
Z-END.COM.....A sound program to alert you that the
transfer is complete.
Other files you will need:
DSZ1126.ARC...Latest version of DSZ.COM.
This version of DSZ was the latest available when this was
written, subsequent versions of DSZ will also work with this
procedure. Please note that this procedure uses DSZ.COM. You
can also find DSZ.EXE which I believe was written for high speed
modems. The .EXE version also uses more memory.
DOWNLOADING
To download a file go through the usual motions with the
host system i.e. select your file, select the protocol etc. Most
systems will then give you a message to start the download
procedure from your end. If you don't see such a message, don't
worry wait a few seconds and you should see something like this:
<00000000fe62
<00000000fe87
Or something like that. Anyway whether you get the message or
not really doesn't matter. To initiate the download do this with
PROCOMM:
ALT-F4...Jumps to DOS, wait for the DOS prompt, then;
RZ.......Type the name of the batch file you are using
Here is a listing of the batch file and an explanation of
each line:
ECHO OFF ;Cuts off screen viewing of the rest of the
batch file.
PATH=C:\PROCOMM\DSZ.COM ;This tells the batch file
where to find Z-modem
DSZ rz -r C:/TEMP ;This command starts Zmodem. DSZ
is the program name, rz is the
command to receive (download)
files, -r invokes crash recovery,
C:/TEMP sends the download to
the directory of your choice (you
can change TEMP to whatever
directory you use).
C:\PROCOMM\ ;Returns you to the directory that your
terminal program is located. (you may
also change this to the directory you
use).
PATH=C:\;\DOS...etc ;resets your default path.
Z-END ;Runs the alarm file to let you know that the
transfer is complete.
EXIT ;Returns you to the PROCOMM terminal screen.
If you are using a floppy based system do the same thing except
type RZF at the DOS prompt. Keep in mind that to be able to
"JUMP to DOS" you must have Procomm on a system disk (if your
Procomm disk is self-bootable your OK). The following is listing
of RZF.BAT:
ECHO OFF ;Cuts off screen viewing of the rest of the
batch file.
DSZ rz -r B:/ ;This command starts Zmodem. DSZ
is the program name, rz is the
command to receive (download)
files, -r invokes crash recovery,
B:/ sends the download to the b:
drive.
Z-END ;Runs the alarm file to let you know that the
transfer is complete.
EXIT ;Returns you to the PROCOMM terminal screen.
UPLOADING
To upload, do your thing with the Host i.e. tell the host
the file name, write your file description (this could be before
or after the file transfer) wait for the message to begin or the
cryptic <0000000000fe6 then once again type:
ALT-F4 then at the DOS prompt,
SZ B:BUBBA.ARC ; Its very important that you type
path and or drive along with the
filename of the file wish to
upload, Zmodem is a batch
protocol that will send all the
files in your default directory
if you don't specify!
Here is the listing for SZ.BAT:
ECHO OFF ;same as above
DSZ sz %1 ;invokes Zmodem, DSZ the program
name, sz send files (upload), %1
enables you to name the file you
wish to transfer.
Z-END ;Sounds the end of transfer
EXIT ;Returns you to Procomm.
NOTES
The use of Z-END is entirely optional, it is a program that
I wrote with my trusty Pascal compiler, One of the things that I
didn't like about jump to dos transfers was the fact that the
computer could not let you know when the transfer was over. I
don't know about you but I don't want to sit and stare at the
computer while I'm waiting for a thirty minute file transfer!
So use Z-END and go do what the heck you want. However, if you
don't want to use it simply delete the Z-END command line from
the enclosed batch files.
I hope you find this helpful. Now transfer something!
If you have any comments or complaints let me know. Just leave a
message on the Trans-continental BBS (803)763-1109.
Jerry Clark
Summerville, S.C.