Timers and interruption.

[Noah]

I'm still learning how to use PIC , and I need Help for this problem . I need to know exectly the time between two events. Like when a external output , turn 0 to 1 , I use set_timer1(0) , and when other output turn 0 to I use the get_timer1(). The time diference between these two events its like 0.1- 0.5 miliseconds .
So I need to hold the routine to wait for a output turn 0 to 1, and when this event happen , start the counter immediately, then wait till other event happen to stop the counter right away . I'm using PIC16f877.
So could someone please help me , I don't know how to use interruptions well.
Thank you,
Noah

[PCM programmer]

See these two CCS examples which show how to measure a pulse:

c:\program files\picc\examples\ex_pulse.c

c:\program files\picc\examples\ex_ccpmp.c

[Noah]

Thanks for your help :\program files\picc\examples\ex_pulse.c
it's pretty much what I need.