> But OK, just this once. I'll make sure my next question is a WWOT! > In short though, what you are describing doesn't make sense. That was my idea too, but I had to check. In the meantime the guy who=20 asked me explained that what I read as a crystal was actually a=20 piezo-speaker. So the full explanation is 'that arrangement can work,=20 but only when the fuses are set for internal RC oscillator :)'. --=20 Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: www.voti.nl/hvu --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .