Mostly not ASCII, which is where the trouble lies, at least until everybody is Unicode and the code page madness goes away. Only 0-127 are ASCII, and even there it is common to repurpose 0-31.
________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Rick Troth <tro...@gmail.com> Sent: Tuesday, October 10, 2023 4:15 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: TN3270, EBCDIC and ASCII Not late at all. The copy-n-paste point makes me wonder if the fonts are actually mapped to ASCII values. I don't know graphical environments well enough to analyze it. But it would mean that, yes, there *is* A/E translation happening even in the graphical 3270 emulators. (In hopes of not steering Juan wrong with what I said before.) -- R; <>< On 10/10/23 14:19, Steve Thompson wrote: > 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 >> >> ---------------------------------------------------------------------- >> For IBM-MAIN subscribe / signoff / archive access instructions, >> send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
