Thanks - it seems to have done the trick alright - I think the problem was
that the pins were being held at the "low" state in the simulator and then
when I did the async. stimulus of bringing the pin low, there was no change
and thus no interrupt.


At 08:51 AM 6/1/98 +0200, you wrote:
>Make sure your interrupt register is set up correctly.  When I use the async
>stimulus I choose the bit to 'toggle' rather than just to set the bit to one
>state e.g. low.  Try this, it works with me (I use C though, not assembler)
>
>Maritz Cloete
>710 2831 (w)
>8552837 (h)
>Quote of the year: "A closed mouth gathers no feet."