> -----Original Message----- > From: piclist-bounces@mit.edu > [mailto:piclist-bounces@mit.edu] On Behalf Of Vitaliy > > Guys, there wasn't a single reply -- did this post make it to > the list? It has hit the list but the C18 experts have not seen it. ;-) Maybe Microchip Forum is another place to post the questions. I am quite new to C18 but it seems that the code is not the same as what I see in the examples. I tried to use the simulator but I have yet to learn how to use the simulator effectively yet. From the simulator run, it seems that you have an overrun error here (USART_Status.OVERRUN_ERROR = 1) with the helloworld line. When you uncomment the helloworld line, you do not have have that error. I remember there is a thread related to this problem in the C18 forum. You may want to check it out. Regards, Xiaofan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist