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Advanced Configuration and Power Interface (ACPI) is an open standard that operating systems can use to discover and configure computer hardware components, to perform power management (e.g. putting unused hardware components to sleep), auto configuration (e.g. Plug and Play and hot swapping), and status monitoring. It was first released in ...
BIOS Boot Specification: 1.01 [2] 1996/01 BIOS Enhanced Disk Drive Specification (INT 13H) 3.0 [3] 1998/04/20 Bluetooth: 5.0 2010/06/30 Boot Integrity Services API 1.0 [4] 1998/12/28 BTX Chassis Design Guidelines 1.1 2007/02 BTX Interface Specification 1.0b 2005/07 BTX System Design Guide 1.1 2007/02/20 Chassis Air Guide (CAG) 1.1 2003/09 ...
SFI has CPU, APIC, Memory Map, Idle, Frequency, M-Timer, M-RTC, OEMx, Wake Vector, I²C Device, and a SPI Device table. SFI provides access to a standard ACPI XSDT (Extended System Description Table). XSDT is used by SFI to prevent namespace collision between SPI and ACPI. It can access standard ACPI tables such as PCI Memory Configuration ...
There is a utility called 'mptable' which can be used to examine the MPS table on motherboards. Since most newer machines support Advanced Configuration and Power Interface (ACPI) which subsumes the MPS functionality, MPS has for the most part been supplanted by ACPI. MPS can still be useful on machines or with operating systems that do not ...
Defective BIOSes may not set up interrupt routing properly, or provide incorrect ACPI tables and Intel MultiProcessor Specification (MPS) tables. The APIC can also be a cause of system failure when the operating system does not support it properly. On older operating systems, the I/O and local APICs often had to be disabled.
At least one Asus board [which?] is known to have faulty BIOSes with corrupt ACPI IVRS tables; for such cases, under Linux, it is possible to specify custom mappings to override the faulty and/or missing BIOS-provided ones through the use of the ivrs_ioapic and ivrs_hpet kernel parameters. [102]
An option ROM for the PC platform (i.e. the IBM PC and derived successor computer systems) is a piece of firmware that resides in ROM on an expansion card (or stored along with the main system BIOS), which gets executed to initialize the device and (optionally) add support for the device to the BIOS.
Processor performance states are defined by the Advanced Configuration and Power Interface (ACPI) specification, an open standard supported by all major operating systems; no additional software or drivers are required to support the technology. [1] The design concept behind Turbo Boost is commonly referred to as "dynamic overclocking". [2]