> This depends on how the receivers are implemented... they > should be edge > triggered and respond to the start bit, but some have a fixed > sampling point > synchronized to a clock.. That sounds like synchronous transmission with a separate clock. Can you point me to one UART that works that way? Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: www.voti.nl/hvu -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist