Hi there Piclisters, l have a question regarding v-ref on RA3 on the 16c73a. The data book states 3V min, but can they be run at 2.5v as there are not many 3v refs and plenty of 2.5v available. If this can be done, can it be done reliably, Also a question on Protel eastrax. l have a Demo copy of Advanced pcb version 2.0 When l try to upload one of my easytrax files it tells me "out of range data found" Any clues would be appreciated Cheery pic'n Kevin Harris