On Thu, 3 Apr 2008, John Temples wrote: > You have your logic backwards. TRMT is high until you write something > to TXREG. Ahh! So I almost had it right... I switched it and see nice square waves on my scope now. The other device is not seeing it but at least I have somewhre to go from now. Thanks for the help and example code that was posted. -- Ian Smith -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist