At 06:54 AM 2/19/2012, PICdude wrote: >Some years ago I fat-fingered movwf as movfw instead and it compiled >w/o an error. Apparently it's the same as "movf ...,W" and was >leftover from an earlier time. Still works, but I don't use it as >it's undocumented so unsure when/if it'll be dropped. 'movwf' is a pseudo-op that is supported by MPASM as well as some=20 other assemblers. In other words, its not a 'real' instruction with=20 a specific op-code. You will find it and several other pseudo-ops documented in the MPASM=20 documentation files. And yes - I use 'movwf' exclusively, as opposed to 'movf XX,W'. Its=20 much easier for my brain to recognize. dwayne --=20 Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .