By the way here is a link to DT's interrupts page: http://darreltaylor.com/DT_INTS-18/home.html That is for PIC18, PIC16 devices can be found through a link at the top left of the page.

and here is the pic timer calculator : http://www.mikroe.com/forum/viewtopi...15663&start=15

Well worth a look, makes using interrupts very easy, and the pic timer calculator opend up a whole new world for me. I was afraid to try either before I found out about these two things.

Regards
Bob