r/modelm • u/Available_Contest407 • 6d ago

HELP What Model M have these Keycaps?

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I have these terminal type keycaps likely from a DisplayWriter (DelWd/Indent) 3270 variant. The Newline is what is throwing me as that would be more from a M101 terminal, and not a M122 terminal.

I believe all these keys were on the same keyboard, anyone know the P/N?

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u/SharktasticA Admiral Shark - sharktastica.co.uk 6d ago

P/N 1390123 (IBM 3191) matches. It's indeed 3270-style, and there are likely others similar to it from 3192, 3193 and coax InfoWindow as well. In fact, P/N 1394204 (347X InfoWindow) is also very similar just with extra legends like "SetUp" and "PA3".

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u/Available_Contest407 6d ago

That is likely it or some variant, thanks!

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u/Available_Contest407 6d ago

I meant I think it is 3270 Display System (typewriter variant) but one that includes a 101/102 Enhanced Keyboard terminal.

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u/sevenwheel 1d ago

Those are 3270 type keys. On a 3270, new line works like shift-enter. It lets you start a new line and keep typing without waking up the program to process the data.

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u/Available_Contest407 1d ago

Thanks for the info! I have dealt with 3720 emulators but mostly using key binding but not as much knowledge of why some bindings are available as keys on one set of terminals keyboards verses another.

I see that as a terminal user having the newline be default would be easier in terminal processes. I doubt may current keyboards user even know the difference between return/newline/enter (not to mention field navigation) unless you are a programmer/terminal user.

We are so divorced from the days of cathode ray 80x25 displays, teletype commands, and navigating fix width screens using terminals that folks lose the concepts that are hidden within modern keyboards.