[ros-diffs] [sir_richard] 46628: [HALACPI]: Begin rough implementation of the Hal ACPI PnP Driver. Will probably need some changes to the ReactOS PnP Manager to work properly (it is not initialized yet). [HAL]: Implement helper registry routine. [HAL]: Implement function to set ACPI mode the "Windows way", which is to enable/disable the firmware mapper. PnP Manager should probably check this in the future.