Difference between revisions of "Developer Manual/Super IO"
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In order to access any configuration register you'll have to use two special registers: | In order to access any configuration register you'll have to use two special registers: | ||
* Index register ( | * Index register (I/O port 0x2E or 0x4E, depending on the chip) | ||
* Data register ( | * Data register (I/O port 0x2F or 0x4F, obtained by adding 1 to the Index register) | ||
The Index register is used to specify which of the configuration registers you want to access. | The Index register is used to specify which of the configuration registers you want to access. | ||