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On hardware platforms that have an ACPI BIOS, the HAL brings about Acpi.sys being loaded during system startup at The bottom of your device tree. Acpi.sys functions given that the interface concerning the functioning procedure as well as ACPI BIOS. Acpi.sys is clear to another drivers in the machine tree.
Objects from the ACPI namespace can either Have got a right defined price, or be evaluated from the AML interpreter. The AML interpreter, directed by the OS, evaluates objects after which you can interfaces with program components to execute vital click here operations.}