Yes, but it will make calls to the library routines -- will the =20 disassembler give me the breakdown (disassembly) of those delay =20 routines? That would be nice... I'll have to check when I'm at that =20 computer. Quoting Marcel Duchamp : > On 11/28/2013 12:03 PM, Neil wrote: > If you think it's down to the difference between the two delay routines, > I would compile each version and examine the output assembly listing. > --=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 .