Hi I am using PicBasicPro within MPLAB. I compiled using mpasmdos as the assembler. It took a long time and I was getting misc errors, but it still said "Build successfully completed". I chose the PM assembler and it compiled quicker and told me how many words had been used. What is the difference? Which one should I be using? If Build results says 1000 words used, is that exact or if it is over 1000 will it still display 1000? Thanks Jon