irq settings
 

hi
i'm trying to install a linmodem, on a toshiba satellite 1550cds, i almost got it done, but it's telling me it's the wrong IRQ, and it says it's defaulted to IRQ9, i looked in the BIOS, and i cannt pick IRQ9, does anyone know how to change the IRQ to 3

As root do:

cat /proc/interrupts

to see what device is using what intterupt. This will only show what IRQ's ARE being used by the kernel.

Apparently your linmodem doesn't like IRQ 9 so you have to change it either by the jumpers on the modem(if their are any) or by using some sort of diagnostic program offered by the vender.