thanks for your qick answer friend .
i was looking for a example code in this forum and saw many examples and wanted to make it for my pic 16F876 i have forund that code here in the forum and it was and also they said that it is working code.but can you say where is my problem on that code it is not working

http://www.picbasic.co.uk/forum/show...ghlight=dmx%2A