For those that are interested, PicNPoke now has an Address Mode Tutor. This is an animated tutorial to help beginners learn about addressing RAM and ROM in the PIC chips, specifically the 16F84. It covers the INDF, FSR, PCLATH, PCL and STATUS registers. You can run a Quick See mode where the computer does the tutorial, or you can manually enter values into the registers and run the animation to see how the changes affect addressing. Registered users, get your upgrades from Dontronics free. Regards Tony For the beginner.... PicNPoke Multimedia 16F84 Simulator Assembler, and Tutorial. Now with PicNPlay circuit simulator. Plus animated Address Mode Tutor. http://www.dontronics.com/picnpoke.html