Oscar T. wrote:
>>I use a keyboard matrix ....
>>                                       .... of a number of other peripherals which are
>>less timing sensitive.
>>
> 
> 
> That seems ok, but what is it the erroneous behaviour?
> 
> Oscar

Sometimes keys get detected that haven't been pressed. I suspect this is 
some sort of interrupt-based problem. Some variable involved is getting 
corrupted, or something like that. It doesn't exhibit this behaviour if 
I don't use interrupts. That's why I'm suspecting that not all the 
registers are properly saved before entering the interrupt handler.


Andrew
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