> You sure about that? >More likely it adjusts the software clock tics by adding or dropping >them as needed. The HARDWARE tic clock is not tweakable in a PC. >(Ok, it is, but not very granular, and not with a system API. >It is VERY hardware specific. >14.31818 Mhz/12/65536 =18.20650736 Hz system tic rate.) That is under all the DOS based systems. My understanding is that the NT based systems change the divisor to something like a 1mS tick. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist