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geekhack Projects => Making Stuff Together! => Topic started by: oxidized on Mon, 26 January 2015, 10:10:42

Title: Adapting Olivetti ANK 2502 to PS/2 or USB
Post by: oxidized on Mon, 26 January 2015, 10:10:42
Hello everyone, i recently came in possession of an old Olivetti ANK 2502 (http://digiphotostatic.libero.it/infom97/med/ae307cc81f_5741975_med.jpg) (similar to a 25-102), apparently it's an olivetti m240/280's keyboard. Unfortunately the cable hasn't got the pc plug, it only has the keyboard plug (http://i.imgur.com/xJwnYDj.jpg) so i don't know whether it uses an AT, XT or Serial plug on the other end, but i'd say either an AT or a Serial plug. Rubber/mech keyswitches (http://i.imgur.com/X3XdJcR.jpg), Double-shot injection molding keycaps (http://i.imgur.com/xlc0FCF.jpg), so what i want to do is, make it work on my computer, but i'm not sure the keyboard works itself cause, i retrieved it into my old school, and it was among other old electronic stuff, pc, etc...

I tried soldering a PS/2 connector to the other end on the cable, i checked all the connections, i'm pretty sure i connected in the right way, VCC and GND, since if i plug it into the pc, the LEDs turn on, but it's all that happens, no response from pc or keyboard, i checked if all the ICs and the uC (an old intel D8749H) get supplied, and they all do, i checked if all the resistors work, and if the electrolytic cap is ok, and everything seems fine, so i'm pretty sure it's all about the Data cables. The plug has 6 wires (5 used), 1 is VCC, 1 is GND, there's another GND wire for some reason, so only 2 left, i suppose both for keyboard control, i tried connecting them both to clock and data, nothing seems to change.

Red: VCC
Green: control (clock? data?)
Yellow: control (clock? data?)
White: GND
Blue: GND

Could be possible that the keyboard is supplied with 12V but i'm not sure, i checked all the datasheets, and except one that should be supplied at 7V, the others are all 5V.
Any idea?

more pics: http://imgur.com/a/70WYZ
Title: Re: Adapting Olivetti ANK 2502 to PS/2 or USB
Post by: pasph on Mon, 26 January 2015, 10:25:26
It uses an Olivetti protocol
http://www.1000bit.it/support/manuali/olivetti/m24.pdf
http://www.retrocomputing.eu/parts/olivetti/m240/M240_Keyboard.jpg
Title: Re: Adapting Olivetti ANK 2502 to PS/2 or USB
Post by: oxidized on Mon, 26 January 2015, 10:32:03
Quote from: pasph on Mon, 26 January 2015, 10:25:26
It uses an Olivetti protocol
http://www.1000bit.it/support/manuali/olivetti/m24.pdf
http://www.retrocomputing.eu/parts/olivetti/m240/M240_Keyboard.jpg

meaning what? i can't do anything to adapt it?
Title: Re: Adapting Olivetti ANK 2502 to PS/2 or USB
Post by: pasph on Mon, 26 January 2015, 10:41:01
Vedi se questi possono esserti di aiuto
http://www.win.tue.nl/~aeb/linux/kbd/scancodes-2.html
http://www.retrogaminghistory.com/archive/index.php?t-7147.html

casomai prova a chiedere a Soarer
Title: Re: Adapting Olivetti ANK 2502 to PS/2 or USB
Post by: oxidized on Mon, 26 January 2015, 10:44:02
Quote from: pasph on Mon, 26 January 2015, 10:41:01
Vedi se questi possono esserti di aiuto
http://www.win.tue.nl/~aeb/linux/kbd/scancodes-2.html
http://www.retrogaminghistory.com/archive/index.php?t-7147.html

casomai prova a chiedere a Soarer

ok vedo, grazie
Title: Re: Adapting Olivetti ANK 2502 to PS/2 or USB
Post by: oxidized on Mon, 26 January 2015, 11:16:35
any other tip?  :-[
Title: Re: Adapting Olivetti ANK 2502 to PS/2 or USB
Post by: pevalcas on Tue, 24 October 2017, 08:13:02
Hello,

I sent you a PM. Are you Italian?

Ciao, Vincent.