> Besides of the common 4, 10 and 20 Mhz types, I thought > I should have som of the ones that makes baudrate > calculations (and timer based RTC setups) easier and > more accurate. well for serial there isn't much point, as long as you are within a couple of percent you should be just fine. as for RTC thats not that hard to do accurately whatever the crystal frequency. The trick for accuracy is to just count the ticks and don't try resetting the timer. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist