On Thu, 24 Apr 2003 16:32:04 -0400, you wrote: >I am using the upper interrupts to time stamp IR transitions, and >so far the data has been quite repeatable. > Thats funny, that's what I use the high priority interrupt on one of my PIC18F452 projects. Seems to work fine even with other services using the low priority interrupt. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.