I've picked up an IBM keyboard clone BTC KB3270. Keyboard is similar to Keytronic KB3270 described here http://www.seasip.info/VintagePC/kb3270.html, but it has 14 DIP switches and spring mechanism. Does anybody know the function of all these switches? How to test this keyboard? Just plug it to an old 486 computer and hope for the best? Thank you for your answers/discussion.
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