Just started playing with MPLAB Simulator, and set up a watch window which includes "W". However, I noticed that W does not change as it should in that window, but the W in Special Function Register Window works properly. So far, I've not found anything in the helpfile that "fixes" this. Any ideas? Cheers, -Neil. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.