You can use OpenOCD which supports many low cost programmers like those based on FTDI device. It can both program and debug many ARM MCU/MPUs. Regards, Xiaofan --=20 Xiaofan --=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 .