Olin Lathrop wrote : > Do you know of overlapping IDs within a family? That would=20 > be really bad. I'm not the one that you call "you", but anyway... :-) I think there are some PIC18 types where there is one "base" modell and then a very similar model with just some extra peripherial. Might have been one of the "motor control" modells. I think it was Rob Hammerling=A8 that reported this. The base model and the one with the "motor controll" peripherial shared IDs. And as far as I know, they are completely similar from the point of view of the HEX file, one had just a few extra SFRs. Now, of course it *could* be interesting to know which of them is currently in the programmer ! :-) Jan-Erik. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist