Hi Argiris, I did some work on precise delays a while back and posted it on my page. It should get you an exact 1 sec delay. Note that the type of delay I have posted there is the kind where the PIC can't bne doing anything else (including interrupts!) at the same time. If you want interrupt-based timing, let me know, I can help you there,too. Have a look at: http://www.people.cornell.edu/pages/shb7/lop.html Good luck, Sean On Mon, 3 May 1999, Lalakis Parafyadas wrote: > Hi there. I'm interested in a routine in ASM that causes a delay of one = > second (exactly) before something happens. I need it to be as accurate = > as possible. Thanks in advance, Argiris >