CMOS NVRAM addresses 256 bytes (minus 16 for the clock). Unfortunately that's not enough. Maybe things could be stored smarter, given that the data should have

CMOS NVRAM addresses 256 bytes (minus 16 for the clock). Unfortunately that's not enough. Maybe things could be stored smarter, given that the data should have some structure, but the raw format is ~2000 bytes, IIRC.