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SubjectRe: Compaq Presario Notebook Keyboard "Extensions"
On Thu, 13 Sep 2001, Erich Schubert wrote:

> Compaq Presario Notebooks (i don't know which ones, at least my Presario
> 1400 and a friend's Presario 1200) have some additional Keys on the keyboard
> These keys apparently do not generate scancodes, i also noticed no
> interrupts being generated.
> I also tried using "kbd-init", but it didn't help either.

Exactly the same here. I've been playing some time with extra keys,
either on PC keyboards and notebooks. My Compaq Presario 1926 just acts
like yours when I hit these extra keys: nothing to be seen. Maybe a
dedicated I/O port? Haven't tried yet.

I've also seen two other cases: keys generating NMIs (yes!) and keys
directly "attacking" hardware. In either case, showkey -s doesn't show
anything. On all desktop PC keyboards that I could lay my hands on
otherwise, it generates e0 xx scancodes on press and e0 (xx | 0x80) on
release. Some of these scancodes even seem to be standard (volume up and
down, play and pause key...). I made a dedicated driver to handle these
keys for 2.2 already. Not yet ported to 2.4.

Francis Galiegue, - Normand et fier de l'être
"Programming is a race between programmers, who try and make more and more
idiot-proof software, and universe, which produces more and more remarkable
idiots. Until now, universe leads the race" -- R. Cook

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