I am replying a bit late to this.
However, when you do a copy/paste from the TN3270 screen to
Notepad (as an example), it then becomes "ASCII". Same for copy
to Word.
Now, if you copy from your workstation and paste into the TN3270
emulator, it gets converted/translated to "EBCDIC" and watch out
for the ] [, and others becoming goofy.
Just thought you might need that bit of info. I've used QWS3270,
EXTRA, VISTA, HOD (Host On Demand), and one or two others.
Steve Thompson
On 10/10/2023 12:18 PM, jgmauta...@yahoo.com.ar wrote:
Hi!
I want to understand how TN3270 emulation works regarding convertion of
characters (between EBCDIC and ASCII, and viceversa).
This is how I think it works (more or less), but I am not sure at all. So
please let me know about any mistakes.
Let suppose that you use a TN3270 emulator program to access the ISPF browser to display a dataset.
Let also assume, to simplify, that it contains just a single character, an "A".In DASD,
what is indeed stored is X'C1' or, to be more accurate, BINARY'1100 0001'. When you BROWSE the
dataset, then the Mainframe sends to the TN3270 PC client exactly X'C1' (BIN'1100 0001'). No
convertion is done at the Mainframe side. Then, when the TN3270 client receives X'C1', because it
knows that this is a TN3270 session and that its configured CODEPAGE is say 500, it realizes that
X'C1' corresponds to an "A" displayable character. And, before sending the instruction to
display it on the PC screen, it converts X'C1' to X'41'.
Is this more or less how this works?
Thanks in advnace for your help,
Juan Mautalen
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