> I would generate the DMX in software, but at 250kbps, a bit is only > 4uS, which doesn't leave much time to do anything else. Using an 18F at 40 Mhz that is 40 instructions, not much but probably doable. Using an SX at 75 MHz it is 300 instructions :) Or maybe mis-use the SPI port? Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.