>For my high res timing in my PC programs I just >read (and poll) the PIT ticks, this is non invasive >and with one simple port read and subtract you get >exact time delay. I did 3 years as a PC games graphics >programmer and lived by the PIT chip. >I still live by the PIT chip now in my C programs >that use the high res timing to control/measure data >from the parallel port. :o) Under Windows??? I am aware of the PIT chip and the methods involved for reading it, but to try and use this method to drive events in an event driven program would be, well interesting... -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics