TORRENS SR wrote: > Hi, > I am building a project using the PIC 16c74. > Part of it involves interfacing to a PC, I am not to sure how to do > this. I am thinking of using the Serial Communications Interface > (SCI), configured as a full duplex asynchronous system, and a > MAX232 to level shift to RS-232. > Could someone explain the nature of operation and how I should > implement it? Hi Ross I did a project that has comms to a rs232 port on the pc from the pic. Works asynchronous at 2400 baud. We simply used Hyperterminal to display the ascii from the pic. My program had to recognise commands from the pc and react to it. Let me know if you want the code. It's written in C, but should be a breeze in asm. -- Eric van Es | Cape Town, South Africa mailto:vanes@ilink.nis.za | http://www.nis.za/~vanes LOOKING FOR TEMPORARY / HOLIDAY ACCOMODATION? http://www.nis.za/~vanes/accom.htm