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View Full Version : Using a PS/2 KB on an IBM 5150/5160?



Springbok
October 29th, 2013, 06:46 AM
Hey guys,

I bought a PS/2 to AT conversion cable (see link below). However, when I type, nothing but random garbage characters appear. Is it an issue with the cable? I was under the impression that this cable would allow me to use my M-Clicky PS/2 KB on my 5150.

www.ebay.com/itm/300982067728

mbbrutman
October 29th, 2013, 06:50 AM
Hey guys,

I bought a PS/2 to AT conversion cable (see link below). However, when I type, nothing but random garbage characters appear. Is it an issue with the cable? I was under the impression that this cable would allow me to use my M-Clicky PS/2 KB on my 5150.

www.ebay.com/itm/300982067728

This should be a FAQ ...

The 5150 and 5160 keyboards do not use the same scan codes and protocol as the later 5170 and PS/2 keyboards. You need more than a simple adapter.

There are variants of the Model M that can use both scan codes and protocols and they auto-switch. The earlier ones are more likely to do this. Your best bet is to find the Model M designed for the last revision of the 5160; that one is distinctive because it has no indicator lights on it. The FRU or part number is 1390120.

There is also an intelligent adapter project you can find on the forums that converts the scan codes correctly.

Springbok
October 29th, 2013, 07:35 AM
Sigh... are there any other KB's that will work with the 5150? There are a bunch of IBM KBs on eBay that have an AT Connector. Are you saying though that just because a KB has an AT Connector, it does not mean it will work on a 5150? There are also a bunch of M Clicky KB's without the lights, but that don't have the Model number you listed. Would those work?

Stone
October 29th, 2013, 07:49 AM
Hey guys,

I bought a PS/2 to AT conversion cable (see link below). However, when I type, nothing but random garbage characters appear. Is it an issue with the cable? I was under the impression that this cable would allow me to use my M-Clicky PS/2 KB on my 5150.

www.ebay.com/itm/300982067728 (http://www.ebay.com/itm/300982067728)Why? The description states:

'This handy adapter will let you use a PS/2 keyboard on your favorite old AT PC.'

5150/5160 ╪ AT.

But you already knew that. :-)

GottaLottaStuff
October 29th, 2013, 03:32 PM
I was about to say, "why not just get an 83 key 5150 keyboard", and then I looked at the prices on ebay. Ouch. Look for XT / AT switchable keyboards, they should be cheaper.

http://www.ebay.com/itm/NMB-101-Key-XT-AT-Switchable-Keyboard-5-Pin-Din-AT-Connector-RT-101-/261289779237?pt=US_Network_Switches&hash=item3cd615a025

For example. Although I don't know if I would pay that much, I'm cheap. :) If you like to dig though junk shops, Goodwill, and flea markets, you're looking for the big AT plug and a switch hidden on the back, usually under one of the feet. PC = XT on the example from ebay.

Chuck(G)
October 29th, 2013, 04:03 PM
There's a AT to XT converter kit offered here on this forum. Uses a 12F series 8-pin PIC and a handful of components. Small and simple.

vwestlife
October 29th, 2013, 04:34 PM
This listing is mislabeled as a PS/2 keyboard, but assuming what you see in the photos is what you'll get, then it could be a bargain:

http://www.ebay.com/itm/331055094028