I've just finally started to use MPLAB. (I couldn't peel myself from DOS MPSIM) It's pretty good I suppose, but frustrating at times as well. It caught me a real beaut. It doesn't display a RED error bar after compiling if your code runs of the end of the ROM space available for the chip selected. It just gives a warning which may be written past the end of the page size on the compile results screen. I couldn't work out why the code kept failing, until I finally simulated it and found the problem. I didn't expect any errors because of the GREEN error bar, but it pays to check every one of those result lines I suppose. -- Best regards Tony http://www.picnpoke.com mailto:sales@picnpoke.com