geekhack
geekhack Community => Keyboards => Topic started by: PlayBox on Mon, 11 July 2022, 13:14:27
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my friends found amiga 500 (maybe +) in their attic or something and im really ijnterested in the keyboard element of it tge switches seem to be mitsumi kpr type linear switches they are linear but progressive and mushy i love the 10u spacebar but they got it in qwertz german layout. i need more info about the keyboard, desktority wiki not helpful. thx in advance
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The space bar is 9u. What info is missing on the DT Wiki that you want to know?
There is a membrane under the switches, with contacts bridged by the rubber contacts at the bottom of the sliders. The membrane is single-sided except for a couple "jumpers" glued on.
An older type of the switch used printed circuit boards instead of membranes.
The keyboard matrix and the protocol are the same for all Amiga keyboard models: they are documented in the Amiga Hardware Reference Manual.
Similar types of switches were also in a variant of Apple Keyboard II and in keyboards for PC.