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Author Topic: Model M for Maybe  (Read 1937 times)

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Offline Vortex324

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Model M for Maybe
« on: Thu, 21 July 2016, 15:52:04 »
I was told that I can have the Model M keyboard if I can replace it with another keyboard that will work with a IBM Display Terminal (PN: 66G1725). I tried just plugging in a PS2 keyboard but that didn't work. The keyboard looks like it's plugged into an RJ45 jack. Someone help!



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Offline E TwentyNine

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    • Some of My Keyboards
Re: Model M for Maybe
« Reply #1 on: Thu, 21 July 2016, 16:38:21 »
You normally can't hotswap a PS/2 keyboard.   If you didn't try it with the terminal off and the keyboard plugged in before turning it on, try that.

Don't think those supported mice, but if they did could be a port for that or something else entirely...
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Daily driver: SSK or Tenkeyless IBM AT
1984 Model M Industrial Prototype ⌨ 1992 Black Oval Industrial SSK ⌨ 1982 5251 Beam Spring ⌨ 89 Key "SSK" ⌨ M13 triplets

Offline y11971alex

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Re: Model M for Maybe
« Reply #2 on: Thu, 21 July 2016, 18:13:40 »
I'm under the impression that you need the specific model of keyboard shipped with the terminal for it to work properly, if your terminal predates Set 3 protocol. IBM made a large variety of terminals and different keyboards to go with them.  So if you were to acquire that Model M, you might just need to replace it with another identical Model M.
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Keyboards owned: IBM Selectric | 3278 | 3101 | 5251 | Model F XT | AT | 122 (6110344) | Model M 1390120 | 1390131 | 1391472 | 1392464 (DisplayWriter SSK) | 1395100 (SSK) | Honeywell RD IBM 09F4230 | Leading Edge DC-2014 (Blue Alps) | Chicony 5891 (Monterey Blue) | E&E-101 (KPT Blue) | BTC 5100 | 5100C | 5369 | DEC VT100 (Hi-tek Linear) | Burroughs TP109 (Hall) | Realforce 87 (55g)

Keyboards wanted: IBM Model F 104 (Unsaver) | Model M 1391401

Offline fohat.digs

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Re: Model M for Maybe
« Reply #3 on: Thu, 21 July 2016, 18:59:07 »
Quote from: y11971alex on Thu, 21 July 2016, 18:13:40

you need the specific model of keyboard shipped with the terminal for it to work properly

Precisely why Orihalcon, standing on the shoulders of Soarer, has given the world such an extraordinary set of tools.
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"However, even though I was born in the Mesozoic, I do know what anyone who wants to reach out to young people should say: Billionaires took your money. They took your chance to buy a home. They took your chance at a good education. They stole your opportunities. Billionaires took the things you want in life. If you really want those things, you have to take them back.
That's the message. That's the whole message. Say that every day, not just to reach America's frustrated young white men, but people of every age, race, and gender.
Late-stage capitalism is a wealth-concentration engine, focused on vacuuming up every dollar and putting it in as few hands as possible. Republicans are helping that vacuum suck.
How does a tiny fraction of the population get away with this? They do it by dividing the other 99% of Americans against themselves."
- Marc Sumner 2025-05-30

Offline y11971alex

  • Posts: 402
  • Location: Toronto, Canada
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Re: Model M for Maybe
« Reply #4 on: Thu, 21 July 2016, 19:57:02 »
Quote from: fohat.digs on Thu, 21 July 2016, 18:59:07
Quote from: y11971alex on Thu, 21 July 2016, 18:13:40

you need the specific model of keyboard shipped with the terminal for it to work properly

Precisely why Orihalcon, standing on the shoulders of Soarer, has given the world such an extraordinary set of tools.
If this is a terminal Model M, I scarcely think it would be worth the expense to purchase one from Orihalcon. 
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Keyboards owned: IBM Selectric | 3278 | 3101 | 5251 | Model F XT | AT | 122 (6110344) | Model M 1390120 | 1390131 | 1391472 | 1392464 (DisplayWriter SSK) | 1395100 (SSK) | Honeywell RD IBM 09F4230 | Leading Edge DC-2014 (Blue Alps) | Chicony 5891 (Monterey Blue) | E&E-101 (KPT Blue) | BTC 5100 | 5100C | 5369 | DEC VT100 (Hi-tek Linear) | Burroughs TP109 (Hall) | Realforce 87 (55g)

Keyboards wanted: IBM Model F 104 (Unsaver) | Model M 1391401

Offline fohat.digs

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Re: Model M for Maybe
« Reply #5 on: Thu, 21 July 2016, 20:21:55 »
Quote from: y11971alex on Thu, 21 July 2016, 19:57:02

I scarcely think it would be worth the expense to purchase one from Orihalcon. 

Whatever. For slightly less than the price of an Orihalcon, you can build:
https://geekhack.org/index.php?topic=58941.msg1348717#msg1348717
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"However, even though I was born in the Mesozoic, I do know what anyone who wants to reach out to young people should say: Billionaires took your money. They took your chance to buy a home. They took your chance at a good education. They stole your opportunities. Billionaires took the things you want in life. If you really want those things, you have to take them back.
That's the message. That's the whole message. Say that every day, not just to reach America's frustrated young white men, but people of every age, race, and gender.
Late-stage capitalism is a wealth-concentration engine, focused on vacuuming up every dollar and putting it in as few hands as possible. Republicans are helping that vacuum suck.
How does a tiny fraction of the population get away with this? They do it by dividing the other 99% of Americans against themselves."
- Marc Sumner 2025-05-30

Offline E TwentyNine

  • Posts: 884
    • Some of My Keyboards
Re: Model M for Maybe
« Reply #6 on: Thu, 21 July 2016, 20:29:51 »
Quote from: y11971alex on Thu, 21 July 2016, 18:13:40
I'm under the impression that you need the specific model of keyboard shipped with the terminal for it to work properly, if your terminal predates Set 3 protocol.

Note that it has got a PS/2 port on it, so it postdates set 3.  Even if that port isn't used for a keyboard.

Even if predates it, there's only a few variations of the terminal boards (two? three?), and there were/are aftermarket versions.

But if the ps/2 port is enabled for keyboard use all that's moot.  If it's not I'd be curious why it's there.

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Daily driver: SSK or Tenkeyless IBM AT
1984 Model M Industrial Prototype ⌨ 1992 Black Oval Industrial SSK ⌨ 1982 5251 Beam Spring ⌨ 89 Key "SSK" ⌨ M13 triplets

Offline y11971alex

  • Posts: 402
  • Location: Toronto, Canada
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Re: Model M for Maybe
« Reply #7 on: Thu, 21 July 2016, 21:33:31 »
Quote from: E TwentyNine on Thu, 21 July 2016, 20:29:51
Quote from: y11971alex on Thu, 21 July 2016, 18:13:40
I'm under the impression that you need the specific model of keyboard shipped with the terminal for it to work properly, if your terminal predates Set 3 protocol.

Note that it has got a PS/2 port on it, so it postdates set 3.  Even if that port isn't used for a keyboard.

Even if predates it, there's only a few variations of the terminal boards (two? three?), and there were/are aftermarket versions.

But if the ps/2 port is enabled for keyboard use all that's moot.  If it's not I'd be curious why it's there.
Are we sure that is the PS/2 port?  Aren't there other applications of the 6-pin Mini-DIN plug elsewhere?  :D
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Keyboards owned: IBM Selectric | 3278 | 3101 | 5251 | Model F XT | AT | 122 (6110344) | Model M 1390120 | 1390131 | 1391472 | 1392464 (DisplayWriter SSK) | 1395100 (SSK) | Honeywell RD IBM 09F4230 | Leading Edge DC-2014 (Blue Alps) | Chicony 5891 (Monterey Blue) | E&E-101 (KPT Blue) | BTC 5100 | 5100C | 5369 | DEC VT100 (Hi-tek Linear) | Burroughs TP109 (Hall) | Realforce 87 (55g)

Keyboards wanted: IBM Model F 104 (Unsaver) | Model M 1391401

Offline Vortex324

  • Thread Starter
  • Posts: 2
Re: Model M for Maybe
« Reply #8 on: Fri, 22 July 2016, 01:24:48 »
So I'm hearing that I'll have to wait till the equipment gets retired and should just buy one.

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