> y = (T1 - ((ZCal * T2) / T2Cal) / T2Cal You've got a missing parenthesis in there somewhere. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu