I can't speak to how the 3274 would deal with the 3270PC, but would think
it needs the same kind of configuration support the 3290 did. On the 3174,
you can customize it to assign basically any device address to any coax
port, and up to five of them per port. You wouldn't need to leave ports
open.

On Thu, Jul 30, 2026 at 7:38 AM rpinion865 <
[email protected]> wrote:

> Anybody remember the IBM 3270 PC?  I worked on one in the mid 1980s.
> IIRC, it could have 4 sessions with one coax attached to the 3x74.
> Again IIRC, the next three coax locations on the 3x74 had to be
> empty.  I assume there was some sort of configuration done to the
> 3x74 to make this work.
>
> Richard Pinion
>
> "Confidentially doc, I am the wabbit."
>
> Bugs Bunny
>
> Sent with Proton Mail secure email.
>
> On Thursday, July 30th, 2026 at 2:30 PM, Jay Maynard <
> [email protected]> wrote:
>
> > "Smile when you say that, podnuh" is an Old West (probably just movies,
> not
> > real life) cliche for "That's usually insulting, but it's the truth for
> me
> > and I'm proud to own it". Never let it be said this list isn't culturally
> > educational.
> >
> > For my paying job, I use ZOC exclusively. Kinda hard to run coax from
> > Austin to southern Minnesota, and the z16 we run doesn't have any 3x74s
> on
> > it anyway. For a few years around Y2K, I worked for a company that did
> > console consolidation, and emulated 3278-2s over coax (as well as VT100s)
> > with a custom card and an S3-based microcontroller. I still have the
> > firmware source for that somewhere around here. Aside from that, though,
> I
> > didn't do mainframes professionally after 1995, and even then I had a PC
> > with an IRMA card. That landed on my desk in 1993.
> >
> > On Thu, Jul 30, 2026 at 6:47 AM Radoslaw Skorupka <
> > [email protected]> wrote:
> >
> > > Now I learnt new word: podnuh. Thanks!
> > > Hard to find in the translators and google's first answer is... some
> > > Internet service with some movies...
> > > However I have found the correct meaning.
> > >
> > > To keep the discussion on topic: how many of us still use *real*
> > > terminals? I'm not talking about models, just "hard" terminal,
> > > coax-attached, etc. Not an emulator.
> > >
> > > Personally I've been using it for MVS consoles till z196. Then migrated
> > > to PC, because my 3174's were ESCON attached and z196 was the last
> > > machine supporting that channel. FICON/ESCON converter was waaay to
> > > expensive for that purpose. I also had 2074 (got it for free!), but it
> > > was also ESCON-attached.
> > > Obviously I migrated to ICC, but that mean use of emulators. Or
> > > appliances - with built-in emulators, etc.
> > >
> > > I have never had real terminal on my desktop. It was always some
> emulator.
> > >
> > > --
> > > Radoslaw Skorupka
> > > Lodz, Poland
> > >
> > >
> > >
> > > W dniu 30.07.2026 o 00:52, Jay Maynard pisze:
> > > > Smile when you say that, podnuh. I'd love to have a 3290 on my desk.
> > > Right
> > > > next to the 3279-S3G-1 that I use daily.
> > > >
> > > > On Wed, Jul 29, 2026 at 3:45 PM Radoslaw Skorupka <
> > > > [email protected]> wrote:
> > > >
> > > >> 3290 - the only person who remember this dev is Shmuel (that's a
> joke).
> > > >>
> > >
> > > ----------------------------------------------------------------------
> > > For IBM-MAIN subscribe / signoff / archive access instructions,
> > > send email to [email protected] with the message: INFO IBM-MAIN
> > >
> >
> >
> > --
> > Jay Maynard
> >
> > ----------------------------------------------------------------------
> > For IBM-MAIN subscribe / signoff / archive access instructions,
> > send email to [email protected] with the message: INFO IBM-MAIN
> >
>
> ----------------------------------------------------------------------
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-- 
Jay Maynard

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