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intpm - Intel PIIX4 Power Management controller driver
This driver provides access to Intel PIIX4 PCI Controller function 3,
Power management controller. Currently, only smbus controller function
is implemented. But it also have bus idle monitoring function. It will
display mapped I/O address for bus monitoring function when attaching.
The intpm driver first appeared in FreeBSD 3.4.
This manual page was written by Takanori Watanabe
This device requires IRQ 9 exclusively. To use this, you should enable
ACPI function in BIOS configuration, or PnP mechanism assigns conflicted
IRQ for PnP ISA card. And do not use IRQ 9 for Non-PnP ISA cards.