Messages in this thread | | | Date | Thu, 21 Aug 2003 17:29:22 +0200 | From | Vojtech Pavlik <> | Subject | Re: Input issues - key down with no key up |
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On Thu, Aug 21, 2003 at 05:03:33PM +0200, Maciej W. Rozycki wrote:
> I meant: how does the translation work if there is only a single onboard > controller that does scanning of the embedded keyboard and presents set #1 > of codes directly? But after a bit of thinking I suppose it does support > translation for an external keyboard (which presents set #2 by default and > a lot of PC software expects set #1) and probably a pass-through mode for > it as well. > > What the big fault of all these limited implementations is, there is no > reliable way to query what is supported. If a device does not support > mode switching or a particular mode, it should NAK a command that does it, > or at least report the original mode if queried afterwards.
Most do, most do ...
> Another > possibility is to return a different device ID -- IBM chose a single value > of 256 possible for its PS/2 keyboards -- why couldn't the incompatible > others have chosen something different, sigh?...
Some do ...
-- Vojtech Pavlik SuSE Labs, SuSE CR - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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