uaca man wrote: > However, I tried disabling the reset pin using the MCLRDIS > instruction There is no such instruction. You may be confusing configuration settings with instructions. The two are very different and you need to learn the distinction. > and it didn`t work without connecting pin 4 to the +5v > supply. And pin 4 is ..? You can't expect us to look up the datasheet for your particular chip just to answer a basic PIClist question. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist