Agreed, tools for assembly on the Atmel chip are available and mature. https://www.youtube.com/watch?v=3DAu2eSyEVKsA (using the Arduino IDE and inline assembly, shows half the flash space for a blinky) Also worth paying attention to the linker map file, to find out what is brought in. --=20 James Cameron http://quozl.netrek.org/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .