Dwayne Reid wrote : > I'll give a specific example: one of our products uses either > a 12c508 or a 12f675, depending upon which variant is being > produced. These are built several hundred at a time with > blank chips. We use a PS+ to program the chips in circuit... Does the PS+ perform verify over the full Vcc range ? (As a "production programmer" does ?) And, if not, is that a (potential) problem ? Or is it just a "it depends" issue ? :-) Regards Jan-Erik. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads