> Can anyone explain why I have 2 systems, both with 2 serial ports which I
> use, yet I get the following:
>
> crucible:~$ cat /proc/interrupts
> 0: 31742599 timer
> 1: 75862 keyboard
> 2: 0 cascade
> 5: 710241 3c509
> 12: 174002 PS/2 Mouse
> 13: 1 math error
> 14: 565977 + ide0
>
> Where are IRQ 3 and 4 ?????
>
> The serial drivers unregister the IRQ when they're done using it, and
> register the IRQ when they need it. Hence, they only show up in
> /proc/interrupts when the com ports are in use.
>
Many thanks to everyone who cleared this up for me... Boy do I feel silly.
Steve