Superiotool is a GPL'd user-space helper tool for LinuxBIOS development purposes (but may also be useful for other things). It allows you to detect which Super I/O you have on your mainboard, and it can provide detailed information about the register contents of the Super I/O.
$ svn co svn://linuxbios.org/repos/trunk/util/superiotool $ make $ sudo make install
Currently the tool will automatically try to detect which Super I/O you have, and also dump the register contents.
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