I am new in using PIC and got problem using a PIC16C74 to read serial data that is transmitted by from a 8051. Even though, I see the data been transmitted on a scope at the receive pin of the PIC. Sometimes, I get an interrupt and sometimes I don't. I was wondering If has something to do with the FIFO and I don't think that I understand how read serial by using a PIC16C74. I was wondering if anyone have any suggestion of how I can handle that problem. That would be very help Thanks N. Edouard