Hello, I've been a few months around pics, though I consider myself as a complete ignorant on the subject. I'd like to know if there's anywhere I cand find a boot file's source code so I can study it, burn it, try it and learn how all of this work together with userspace applications (just flashing a led is mi goal by now). What I'm using is a pic18f4550, I've already seen microchip's usb project zip for building it with MPLAB, though I've left usb right appart by now as it's way too much the knowledge I have at the moment. Appart from it, I'm not using windows but linux. So I wonder if is there somewhere users could find sdcc, or gpasm bootfiles' source code for this model of PIC? any close model would also be helpful Thanks so much for any pointers or advises. Best Regards, -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist