What program in asembler can send 4 bytes through rs422 port to PIC16F627A, and then this pic send this bytes (4 x 8bits)to LEDs (8 LEDs in 4 groups). Thank You for your help. jolanta_szarzynska@o2.pl -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist