This is totally unrelated two my two previous posts.

What I would like to do is use an interupt to read a control sequence from an IR demodulator. I would like the interupt to trigger on the start bit of the sequence (the first time the IR demodulator pin goes low).

However, if the INT5 pin is triggered on a high-to-low pulse across the pin (assuming its possible) how do I keep the INT5 from triggering 13 times in sucession? (the pulse goes high and low for each bit, 13 bits total)

In other words, once inside an interupt vector, can I include a command to disable all interupts (via IE I assume) so that no other interupts (or the same one) will trigger in the routine, and then re-enable the INTs directly before RETI ?