Hi, How I can read data from my PC COM1 port using MPLAB and C18(using C programming language) 1. is it possible to use inline assembly to read COM1 port using MPLAB, beacause i couldn't find any library function in MPLAB that used to read COM1 port of a PC 2.my virtual gps is conected to COM2(COM1 and COM2 connected using virtual serial port kit). regards srinil kumar -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist