Somewhere...I had my answer and now I can't find it again. I need to tristate output pins as the code is running....if I recall there is something to do with using the TRIS command, but I thought it was related to the entire port and not just bits. I need to basically talk to one bus, but with two pins, so can't have them on at the same time or else contention. _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads