I would start with RFC 2355, TN3270 Enhancements <https://datatracker.ietf.org/doc/rfc2355/>
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 עַם יִשְׂרָאֵל חַי נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Mike Schwab <000005962a42dc49-dmarc-requ...@listserv.ua.edu> Sent: Thursday, August 15, 2024 11:12 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: 3270 programming https://www.ibm.com/docs/en/zos-basic-skills?topic=terminal-3270-data-stream Specifically listed but no link, On Thu, Aug 15, 2024 at 7:45 PM Tom Brennan <t...@tombrennansoftware.com> wrote: > > I don't think TN3270/TN3270E protocols are related to this manual. > They're basically just a layer used to pass the binary 3270 data stream > back and forth. > > But Lennie has a good point. I have a printed copy -05 from 1990 and > it's pretty beat up. I seem to remember it on an IBM doc site until > (guessing) 2005 or so, then it was suddenly gone. Maybe someone made a > mistake in removing it, because it's certainly required for anybody who > wants to code their own 3720 screens, or simply wants to know how things > work. > > On 8/15/2024 5:33 PM, Ken Bloom wrote: > > 3270 is supported via tn3270 and tn3270E. That’s the protocol supported > > by IBM OSA or Visara CCA3074 etc. You can probably find some old coax > > manuals for native 3270. > > > > Ken > > > > > > Kenneth A. Bloom > > CEO > > Avenir Technologies Inc > > /d/b/a Visara International > > 203-984-2235<tel:203-984-2235> > > bl...@visara.com<mailto:bl...@visara.com> > > http://www.visara.com/<http://www.visara.com/> > > > > > > On Aug 15, 2024, at 8:22 PM, Lennie Bradshaw <lennie-brads...@outlook.com> > > wrote: > > > > So if the protocol is still supported, and still used, and still a valid > > programming interface, why is there no *current* manual available from IBM > > documenting it? > > > > Lennie > > > > -----Original Message----- > > From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of > > Jay Maynard > > Sent: 15 August 2024 23:02 > > To: IBM-MAIN@LISTSERV.UA.EDU > > Subject: Re: 3270 programming > > > > I think IBM still supports 3270 access, if not the 3270s themselves. > > > > But if the data stream hasn't changed since the -7 manual was published, > > there's no need for an update... > > > > On Thu, Aug 15, 2024 at 4:54 PM Paul Gilmartin < > > 0000042bfe9c879d-dmarc-requ...@listserv.ua.edu> wrote: > > > > On Thu, 15 Aug 2024 15:16:15 -0500, Mike Schwab wrote: > > > > There have been no updates. > > > > Does IBM continue to support the device? If not, there's little > > business case to provide user's manuals. > > > > Regardless, some documentation is necessary as long as IBM products > > depend on 3270 data streams. > > > > -- > > gil > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, send > > email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > > > > > > > -- > > Jay Maynard > > > > ---------------------------------------------------------------------- > > 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 -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- 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
