Bad ? Not necessarily Idea ? Definitely Microchip themselves say that unused peripheral registers can be used as storage space. And why not - they just RAM. But sometimes I'd not trust Microchip if they said GPRs could be used for storage You might get hit from behind in a dark alley one day if you don't test thoroughly. For example, registers like ADRES *shouldn't* change on their own and *should* be safe to use Joe --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .