I want to simulate the reception of 4 bytes (rs232 format 9600 baud with 1 stop, and 1 start bit) by a 16C84 in MPSIM. I'm running the PIC at 4Mhz so the bits are 104 steps long. I don't know how to do the timing or how to make a pin stay high for a bit-long period of time. Can anyone tell me how to setup the stimulus file? I'd like to recieve these 4 bytes about 40 cycles into the program. Thanks very much in advance for any help/pointers. Scott