Patrik,
At reset the interrupts are initialised to point to the CPU so by default the interrupt will go the CPU. From the intial conditions the steps are:
add a vector into the CPU vector table
create an interrupt service routine
and enable interrupts.
The various approaches are discussed in a thread here: http://forums.freescale.com/freescale/board/message?board.id=16BITCOMM&message.id=111 and identify useful app notes that include code.
Thanks a lot!
Now I got it working
Patrik