ACPICA

The ACPI Component Architecture ACPICA provides an operating system (OS)-independent reference implementation of the Advanced Configuration and Power Interface. It can be adapted to any host OS. The ACPICA code is meant to be directly integrated into the host OS, as a kernel-resident subsystem. Hosting the ACPICA requires no changes to the core ACPICA code. However, it does require a small OS-specific interface layer, which must be written specifically for each host OS.

The complexity of the ACPI specification leads to a lengthy and difficult implementation in OS software. The purpose of the ACPI Component Architecture is to simplify ACPI implementations for operating system vendors (OSVs) by providing major portions of an ACPI implementation in OS-independent ACPI modules that can be easily integrated into any OS.

External links

• ACPICA Website
• ACPICA Programmer Reference. Explains how to integrate it in your OS.