Quintin Beukes wrote: > I will send code to reproduce. Why? The concept is clearly flawed to begin with. It is no surprise that calling EXIT causes messed up UART transmission. > When you send E it will do exit(0) Again, why? What do you think it means to exit the process and return to the OS when there is only one process running on the machine and there is no OS? The concept makes no sense. ******************************************************************** 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