-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Back when I was in grad school I used to debate with people which is the best way to teach programming and general purpose computing: from the transistor up or the language down. Both camps had valid points.
Sent from ProtonMail mobile \-------- Original Message -------- On Apr 6, 2020, 10:04 AM, Seymour J Metz < [email protected]> wrote: > > > > I hope not. > > > \-- > Shmuel (Seymour J.) Metz > http://mason.gmu.edu/~smetz3 > > > \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ > From: IBM Mainframe Discussion List <[email protected]> on behalf of > Charles Mills <[email protected]> > Sent: Monday, April 6, 2020 12:37 PM > To: [email protected] > Subject: Re: Free 3270 emulator for Mac OS > > If there's a market for BSC-based 3270 emulators, let me know. I've written > two. (Well, one I only wrote the BSC to/from screen buffer part; my > associate John wrote the keyboard and display part. > > <g> > > Charles > > > \-----Original Message----- > From: IBM Mainframe Discussion List \[mailto:[email protected]\] On > Behalf Of Timothy Sipples > Sent: Sunday, April 5, 2020 6:59 PM > To: [email protected] > Subject: Re: Free 3270 emulator for Mac OS > > Seymour J. Metz wrote: > >A few more notes on nomenclature. TN3270 and TN3270E (upper case) > >are protocols published by the IETF; programs implimenting those > >protocols are TN3270 clients, not TN3270 emulators. TN3270 clients > >are not 3270 emulators, because they do not support any of the link > >protocols that real 3270s do, e.g., BSC, CUT, DFT, SDLC. > > I disagree with the last sentence, and IBM (among many others) does too, > evidently. You'll see "emulator" in the IBM Host On-Demand (HOD) > documentation, for example. I don't recall HOD ever communicating via BSC > or SDLC. "Emulator" has a different meaning than the word "clone," which > is the word you might have been looking for. > > If you want to be pedantic about it, per Wikipedia "IBM 3270" refers to a > family of IBM terminals ("displays"), printers, and controllers (following > the IBM 2260 family) that IBM refined and improved over several years. All > modern "3270" terminal emulators are necessarily partial emulators in > certain respects, but practically all of them exceed the capabilities of > the last physical/classic 3270 family of products in certain respects, > too. > > Anyway, if you want to describe various 3270 emulators as "partially" > emulating the IBM 3279 (for example), that makes sense to me. However, the > word "emulator(s)" is perfectly acceptable and appropriate in this context > \-- in my view and with broad consensus agreement as far as I can tell. > > "TN3270 emulator" (or "TN3270E emulator") is confusing and not generally > correct. If you're using TN3270(E) protocol then you're probably not > emulating it. > > A TN3270(E) client need not be a 3270 terminal emulator. I think most > people would not describe an automated test tool that works via a > TN3270(E) connection as a "3270 emulator," for example. They'd probably > describe it as a "3270 test(ing) tool." > > \- - - - - - - - - - > Timothy Sipples > I.T. Architect Executive > Digital Asset & Other Industry Solutions > IBM Z & LinuxONE > \- - - - - - - - - - > E-Mail: [email protected] > > \---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > > \---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > > \---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > -----BEGIN PGP SIGNATURE----- Version: ProtonMail wsBmBAEBCAAQBQJei2ZhCRBiYga9B/zq3QAKCRBiYga9B/zq3RExB/0Vouer F/v7e5U7vb+Lje1CAJrIryAkTMJBda462HJtZ4oTrzx6wwyYIN3Zg1JQXIee /osE6jePzW2W8ujuWaPVgHFobhnw6MIzljE3szbePa9OT4RQOksRqhcib13N pQfi055nm4R3MqHN7Pld97++o0SvJnJ1i/ZpPinHEI7GeqRKCbMXNlvB2yAV IgV50PJIBoS7Pd5CwCUje0QPGZY7nyeufpFLDcWm5a1erDdKgJbaoo0/ugDf chO8SjMQP0Y5SLmxxmlAqA7DJ2FYIQb4WOp1AfN1wSFagz/Yvnf053OGO4iJ td92RJtTGR3YBbcy4dphtWQnLYtdoszw1kQK =4+29 -----END PGP SIGNATURE----- ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
