wouter van ooijen wrote: >>I haven't read the article, but it sounds like they should >>have done some >>form of readback to verify correct loading of the parameters, >>but that is >>not always possible either. > > > Where possible a write-to-temporary-storage, readback, > write-to-working-storage cycle is often used. But IIRC from the article > in this case the communication window was shorter than the round-trip > delay ... But this wouldn't have helped since the readback would have given the correct data back even though the supplied address was WRONG! R -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist