The registry consists of three 32K blocks of flash used as primary, secondary and baseline parameter sections. The primary and secondary sections provide a redundant backup for reading and writing registry keys ( or parameters ) while the baseline section provides a baseline for the registry keys ( or parameters ). Since only entire sectors of flash can be erased, registry keys cannot be overwritten. As parameters are written to the registry, the previous registry key becomes inactive and a new registry key becomes active. As registry keys are written to the registry, eventually the registry fills with inactive registry keys.
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