:: Software USART did not work at all on the 12F629 and it looks like :: will be very hard to make it work. Which bit (no pun intended) didn't work? Was it timing? Was this Pic to Pic or Pic to an RS232 driver? Are you wanting to stay with the 12F series? Colin -- cdb, colin@btech-online.co.uk on 12/08/2009 Web presence: www.btech-online.co.uk Hosted by: www.1and1.co.uk/?k_id=7988359 -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist