Messages in this thread | | | Date | Tue, 14 Sep 1999 11:25:06 +0200 | From | Vojtech Pavlik <> | Subject | Re: Designing a keyboard controller |
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On Tue, Sep 14, 1999 at 09:41:01AM +0200, J.D. Bakker wrote:
> That looks like a good solution. The question remains then: what does an > 8042 'look like', as seen from Linux ? I want to mimic the ISA side of a > regular keyboard controller (without actually cramming a 40pin DIL chip on > my 7.5x10cm PCB :-P). Does anyone have pointers to documents on this ?
If you really want to present an i8042 interface to Linux (as crappy as it is), I think the VIA VT82C42 could work, since it's also available in SMD packaging.
> A semi-related question: is it possible for multiple different devices on > an ISA-ish bus to share an interrupt *on the processor side* ? For example, > say I have a custom PIC which multiplexes (logic OR) the interrupt output > of a keyboard controller with the interrupt output of an IDE controller > onto one interrupt line for the processor. Does this work, or do I break > any hidden assumptions in either the keyboard or the IDE driver ?
As far as I know, there isn't any problem with the keyboard driver. Don't know about the IDE driver, though.
Vojtech
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