Not sure what your point is. The displayable data in a 3270 data stream, as sent to a 3270 device, is not ASCII as far as I've ever seen. Of course a controller might rework it as an emulation thing, but I don't think any 3270s spoke ASCII, did they?

On June 18, 2026 10:33:44 PM Seymour J Metz <[email protected]> wrote:

"Data, commands, and orders transmitted between the control unit and the host system are in the form of interface codes. Two different codes are used in the United States:
extended binary-coded decimal interchange code (EBCDIC) and American National
Standard Code for Information Interchange (ASCII). The EBCDIC codes are also used in the World Trade countries (ASCII is available only in the U.S.); refer to IBM 3270
Information Display System: Character Set Reference, GA27-2837, for details. "


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Shmuel (Seymour J.) Metz
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From: IBM Mainframe Discussion List <[email protected]> on behalf of Phil Smith III <[email protected]>
Sent: Thursday, June 18, 2026 10:03 PM
To: [email protected] <[email protected]>
Subject: Re: Two TSO terminal I/O from Rexx questions


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Ehhhhh...the 3270DS itself still isn't doing ASCII, I don't think.

On June 18, 2026 9:36:18 PM Seymour J Metz <[email protected]> wrote:

That depends on the 3271 model.


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Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
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From: IBM Mainframe Discussion List <[email protected]> on behalf of
Paul Gilmartin <[email protected]>
Sent: Thursday, June 18, 2026 7:53 PM
To: [email protected] <[email protected]>
Subject: Re: Two TSO terminal I/O from Rexx questions


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On Thu, 18 Jun 2026 22:30:08 +0000, Seymour J Metz wrote:

My TSMBIRD was ASCII art on a 3277; is your ILRBIRD fancier?

ASCII ?  3277?
It's easier to believe EBCDIC character cell.
Or do 3277 data streams support ASCII?

--
gil

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