>> the ICD code may 1) still work at the different frequency, 2) work marginally, or 3) fail miserably. << Good thing we've got that nailed right down! ******************************************************************** Olin Lathrop, embedded systems consultant in Littleton Massachusetts (978) 742-9014, olin@embedinc.com, http://www.embedinc.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.