Is it possible for the C18 compiler to generate assembly listings from the compiled C code? I know gcc and MS VC do have such an option. If you wanted to know why I want this, it is simply to better understand the C samples, e.g. like rom struct.... what is rom keyword ram struct... what is ram keyword extern volatile far BDT ep0Bo what is far, what is volatile are all these explained somewhere? Will -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist