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Computer firmware interface standard
firmware-level ACPI has three main components: the ACPI tables, the ACPI BIOS, and the ACPI registers. The ACPI BIOS generates ACPI tables and loads ACPI tables
ACPI
Topics referred to by the same term
Look up ACPI in Wiktionary, the free dictionary. ACPI (Advanced Configuration and Power Interface) is a computer firmware standard. ACPI may also refer
ACPI_(disambiguation)
Hardware timer used in personal computers
can also use the processor's Time Stamp Counter (TSC), or ACPI Power Management Timer (ACPI PMTIMER), together with the RTC to provide operating system
High_Precision_Event_Timer
Technical specification for firmware architecture
to comply with Server Base Boot Requirements (SBBR). SBBR requires UEFI, ACPI and SMBIOS compliance. In October 2020, Arm announced the extension of the
UEFI
Low-power mode for electronic devices
hibernation on modern computers. Sleep mode corresponds to ACPI mode S3. When a non-ACPI device is plugged in, Windows will sometimes disable stand-by
Sleep_mode
Non-profit trade organization based in Oregon
Interface (ACPI) assets have also been transferred into the forum. The forum is responsible for the management and promotion of future ACPI specifications
UEFI_Forum
Hardware error handling mechanism
Reporting and firmware-provided interfaces such as the ACPI Platform Error Interface (APEI), introduced in ACPI 5.0. On Linux systems, APEI is implemented directly
Windows Hardware Error Architecture
Windows_Hardware_Error_Architecture
Asset management firm with offices in London, Jersey, and South Africa
ACPI Investments is an asset management firm serving private clients, trustees, charities, family offices, and institutions. The company has offices in
ACPI_Investments
Hardware signal sent to a processor to interrupt a running program and handle input
process PCI IRQ steering; later, the PIR table has been superseded by the ACPI _PRT (PCI routing table) protocol. On APIC with MSI systems, typically there
Interrupt_request
Series of specifications and Microsoft Windows features
specification that alleviates the need for user configuration of device resources. ACPI is the successor to Legacy Plug and Play. The Plug and Play standard requires
Legacy_Plug_and_Play
API for power management in IBM-compatible computers
Revision 1.2 was the last version of the APM specification, released in 1996. ACPI is the successor to APM. Microsoft dropped support for APM in Windows Vista
Advanced_Power_Management
Computer operating system
the Windows Driver Model, support for USB composite devices, support for ACPI, hibernation, and support for multi-monitor configurations. Windows 98 also
Microsoft_Windows
Mechanism for passing hardware information
device trees, relying instead on various auto configuration protocols (e.g. ACPI) to discover hardware. Systems which use device trees usually pass a static
Devicetree
International hardware and software company
with ACPI tables on certain AMIBIOS BIOSes supplied by Foxconn, ASUS, and MSI. The problem was related to the ACPI _OSI method, which is used by ACPI to
American_Megatrends
Topics referred to by the same term
but still under power and ready to activate on command Standby (or ACPI S3), an ACPI mode of a computer Modern Standby (or InstantGo), a computer power
Standby
Power management technique in computers
indicates, and vice versa. ACPI 1.0 (1996) defines a way for a CPU to go to idle "C states", but defines no frequency-scaling system. ACPI 2.0 (2000) introduces
Dynamic_frequency_scaling
Circuit handling system tasks in computers
problems) SCI from the embedded controller to inform the ACPI driver (in the OS) of an ACPI Event As a core system component, the embedded controller
Embedded_controller
Version of Windows Server, released in 2008
predecessor to Windows Server 2008 R2. It removed support for computers without ACPI, and is the first version that includes Hyper-V. It is the last version of
Windows_Server_2008
Version of Windows Server, released in 2003
processors without ACPI. IA-64 and x64 builds of Windows Server 2003 as well as Windows Server 2008 and later strictly require ACPI. Windows Server 2003
Windows_Server_2003
Feature of some electrical appliances
management and is built around a standard called ACPI which superseded APM. All recent computers have ACPI support. PC power management for computer systems
Power_management
Firmware for hardware initialization and OS runtime services
information about hardware monitoring through ACPI, in which case, the operating system may be using ACPI to perform hardware monitoring. In modern PCs
BIOS
The Association of Christian Philosophers of India (ACPI) was founded in 1976 in Aluva, Kerala, India, inspired by Dr Richard De Smet, SJ, and initiated
Association of Christian Philosophers of India
Association_of_Christian_Philosophers_of_India
Powering down a computer while retaining its state
sleeping mode S4 in the ACPI specification. On Windows computers, hibernation is available only if all hardware and device drivers are ACPI and plug-and-play–compliant
Hibernation_(computing)
128-bit number used to identify information in computer systems
for variant 1 (DCE) versions 6 and 7, standardized in RFC 9562. UEFI and ACPI are examples that use GUID. Birthday attack Object identifier (OID) Uniform
Universally_unique_identifier
ACPI replaced Advanced Power Management (APM), the MultiProcessor Specification, and the Plug and Play BIOS (PnP) Specification. Internally, ACPI advertises
History_of_personal_computers
Identifier for a file type
example: UEFI Forum for vendor in the ACPI ID Registry ACPI specification defines four-character identifiers in ACPI Source Language (ASL) Synopsys to tell
FourCC
Overclocking technology by Intel
performance states are defined by the Advanced Configuration and Power Interface (ACPI) specification, an open standard supported by all major operating systems;
Intel_Turbo_Boost
Mechanism to wake up computers via a network
Wireless LAN (WoWLAN). In most modern PCs, ACPI is notified of the waking up and takes control of the power-up. In ACPI, OSPM must record the wake source or
Wake-on-LAN
Simple two-wire bus for motherboards
a laptop's rechargeable battery subsystem (see Smart Battery System and ACPI). Other devices might include external master hosts, temperature sensor,
System_Management_Bus
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
MultiProcessor_Specification
Method of CPU communication
Coprocessor Direct memory access Advanced Configuration and Power Interface (ACPI) Speculative execution CPU vulnerabilities A memory that besides registers
Memory-mapped I/O and port-mapped I/O
Memory-mapped_I/O_and_port-mapped_I/O
Computer future
In Linux, the real time clock alarm can be set or retrieved using /proc/acpi/alarm or /sys/class/rtc/rtc0/wakealarm. Alternatively, the rtcwake utility
Real-time_clock_alarm
Subsystem of Apple computers
allowing macOS to identify when it is running on non-Apple hardware. SMC uses ACPI on Intel Macs and RTKIT on Apple silicon based Macs for communication. Embedded
System_Management_Controller
Amiga system for automatically setting up hardware peripherals
the need for jumper settings. It is analogous to PCI configuration through ACPI. Autoconfig is integrated within the Amiga's Kickstart firmware, usually
Autoconfig
1999 Microsoft operating system version
version to support hibernation at the operating system level (OS-controlled ACPI S4 sleep state) unlike Windows 98 which required special drivers from the
Windows_2000
Low-level protocol used for controlling hardware components
space, MCHI Description Table and control methods defined and exported via ACPI, and data structures exported via SMBIOS. Out-of-band management Intelligent
Management Component Transport Protocol
Management_Component_Transport_Protocol
ecosystem includes systems that boot with UEFI, handle power management with ACPI and run a variety of operating systems including Linux distributions such
RISC-V_ecosystem
Family of Intel's single-chip chipsets
EHCI controller. This can happen when AC power is removed after entering ACPI S4. Applying AC power back and resuming from S4 may result in non detected
Platform_Controller_Hub
1998 Microsoft operating system version
also supports 3DNow!, SSE, and Extended CPUID (ECPUID with ACPI). Windows 98 introduced ACPI 1.0 support which enabled Standby and Hibernate states. However
Windows_98
Fatal system error screen
of components, hardware running beyond its specification limits, or even ACPI compliance issues with the BIOS. In the Windows 9x line of operating systems
Blue_screen_of_death
Boot firmware for Intel Moorestown platform
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
Simple_Firmware_Interface
AES, Montgomery Multiplier, RNG) VIA PowerSaver supported with up to 8 ACPI P-states Idle power 500 mW All models support: MMX, SSE, SSE2, SSE3, NX bit
List of VIA Eden microprocessors
List_of_VIA_Eden_microprocessors
Topics referred to by the same term
(disestablished) the representation of the number 1 in Peano arithmetic ACPI S0 power state in computing S0 galaxy, an astronomical code for barless lenticular
S0
2021 Microsoft operating system version
requirements. ARM64 version of Windows 11 requires the UEFI firmware with ACPI protocol. Starting with version 24H2, IoT Enterprise editions have officially
Windows_11
Pseudo file system provided by the Linux kernel
manually using the mount command: mount -t sysfs sysfs /sys. ACPI Exports information about ACPI devices. PCI Exports information about PCI and PCI Express
Sysfs
Physical components of a computer
essential functions, including boot sequence and power management through the ACPI standard. However, most modern motherboards have transitioned to the Unified
Computer_hardware
Low-level computer software
Magazine. No. 162. May 2014. p. 9. Shuttleworth, Mark (March 17, 2014). "ACPI, firmware and your security". Archived from the original on March 15, 2015
Firmware
Operating system based on OS/2
is recommended to disable hyperthreading. As of version 5.0.8, ArcaOS is ACPI 6.1-compliant and includes the 20220331 release of ACPICA. Although ArcaOS
ArcaOS
Signal that activates a device via a telephone connection
wake up or turn on from a sleeping, hibernating or soft off state (e.g. ACPI state G1 or G2), and begin operation. The basic premise is that a special
Wake-on-ring
Unix-like software that manages kernel attributes
ASUSTeK AI Booster ACPI ATK0110 voltage, temperature and fan sensor". BSD Cross Reference. FreeBSD. 2010. "aibs -- ASUSTeK AI Booster ACPI ATK0110 voltage
Sysctl
Software designed to enable access to unauthorized locations in a computer
Loader" or "Windows Loader" software work in a similar way by injecting an ACPI SLIC (System Licensed Internal Code) table in the RAM-cached version of the
Rootkit
Watchdog (errant system detection) Existing specifications for USB, PCIe, ACPI, TPM, and other standards are incorporated to solidify the specification
Server Base System Architecture
Server_Base_System_Architecture
Software that hides details of hardware access
determined during startup; in fact since Windows Vista, Windows NT only allows ACPI based HAL. The Windows CE also has a HAL called OEM Adaptation Layer (OAL)
Hardware_abstraction
Operating system
of these efforts are included in version 2 of eComStation; among others: ACPI support. A new generic graphic card driver called Panorama. A bootable version
EComStation
Convention for naming Ethernet adapters in Linux
how system firmware can provide device naming to operating systems via the ACPI interface. The convention was implemented for Dell in a module called biosdevname
Consistent Network Device Naming
Consistent_Network_Device_Naming
Available computing resource
at little cost. On the boot process of the modern operating systems, the ACPI protocol or the Devicetree protocol is often used to deliver hardware resources
System_resource
Series of x86-compatible processor
core (based on Mobile Athlon XP-M). Power management: AMD PowerNow!, ACPI 1.0b and ACPI 2.0. 3DNow!, MMX and SSE instruction sets 0.13 μm (130 nm) fabrication
Geode_(processor)
Private bank and finance firm in Switzerland
July 2018, UBP expanded its activities in the UK with the acquisition of ACPI. In January 2019 the rating agency Moody's assigned UBP a long-term deposit
Union_Bancaire_Privée
Free and open-source operating system
driver for ECC memory Major network protocol stack and SMP improvements ACPI-related improvements 2.10 26 April 2011 Giant lock removed from every area
DragonFly_BSD
Class of I/O controller integrated circuits
consumer IR receiver A MIDI port Some GPIO pins Legacy Plug and Play or ACPI support for the included devices By combining many functions in a single
Super_I/O
Hardware cache of a central processing unit
management Boolean Digital Analog Quantum Switch Power management PMU APM ACPI Dynamic frequency scaling Dynamic voltage scaling Clock gating Performance
CPU_cache
Component of the Microsoft Windows operating system
chipset or have no set category (eg. Intel Management Engine, Disk controller, ACPI events) Video and Audio Capture devices: Devices used to route audio/video
Device_Manager
Free incomplete Windows NT-like operating system
improved SATA support, fixed graphics issues Unsupported: 0.3.14 2012-02-07 ACPI enabled by default, WiFi support (unencrypted and WEP), theme support, new
ReactOS
must have an ACPI IVRS table to enable the use of it. At least one Asus board[which?] is known to have faulty BIOSes with corrupt ACPI IVRS tables; for
List of IOMMU-supporting hardware
List_of_IOMMU-supporting_hardware
Software licensing for multiple users or computers
license data is stored in the computer's BIOS in an area referred to as the "ACPI_SLIC", so that KMS can detect the use of previous Microsoft products even
Volume_licensing
Operating system
Grechnikov or "Diamond". There are two development branches: KolibriACPI, which has extended ACPI support, and Kolibri-A, an exokernel version of KolibriOS optimized
KolibriOS
Family of RISC-based computer architectures
operating system interoperability for Advanced Configuration and Power Interface ACPI environments, where generic operating systems can be installed on either
Arm_architecture_family
Theory that some of our sense-data can accurately represent external objects
1831-1933, Cambridge UP, 1984, p. 209. Coelho, Ivo, 2010. "Critical Realism." ACPI Encyclopedia of Philosophy. Ed. Johnson J. Puthenpurackal. (Bangalore, ATC)
Critical realism (philosophy of perception)
Critical_realism_(philosophy_of_perception)
American manufacturing company
in November 2018 that Elkay's Wood Products Division would be acquired by ACPI. In October, 2019, Ric Phillips replaced Tim Jahnke as president and CEO
Elkay_Manufacturing
Computer component
management Boolean Digital Analog Quantum Switch Power management PMU APM ACPI Dynamic frequency scaling Dynamic voltage scaling Clock gating Performance
Translation_lookaside_buffer
Fatal error displays in operating systems
Another was in Windows 98 beta builds and was caused by an error with the ACPI. It also appears on the Atari Jaguar if there is a loading cartridge error
System_crash_screen
1998 video game
Conference on Games Based Learning. ACPI: 9. 2017. Retrieved 30 July 2023. Gaming in Corporate Learning Environments. ACPI. 2015. p. 10. doi:10.34190/GBL.19
Kula_World
Computer button
adjustable emulation rate. Modern PCs that support ACPI power management may provide software controls to switch ACPI performance states or other CPU throttling
Turbo_button
Combinational digital circuit
management Boolean Digital Analog Quantum Switch Power management PMU APM ACPI Dynamic frequency scaling Dynamic voltage scaling Clock gating Performance
Arithmetic_logic_unit
Operating system by Phoenix Technologies
existing OS is suspended to RAM by entering ACPI standby (S3) mode, but the OSM then intercepts and modifies the ACPI tables so that the second OS is loaded
HyperSpace_(software)
Operating mode of x86 central processor units
for newer functionality like Advanced Configuration and Power Interface (ACPI). Some uses of the System Management Mode are: Handle system events like
System_Management_Mode
Filipino animation festival
Philippines. Organized by the Animation Council of the Philippines, Inc. (ACPI), the festival features the animated works of veteran and novice Filipino
Animahenasyon
Automatically discovering of components without manual configuration
Specification in 1990s, the PCI BIOS Specification is superseded by the ACPI in 2000s. In 1995, Microsoft released Windows 95, which tried to automate
Plug_and_play
Type of random-access memory for computers
computer, but standardization work in 2014 and 2015, such as at JEDEC and ACPI, was based on the DDR4 interface. Xeon processors since Broadwell support
NVDIMM
American manufacturer of home improvement and building products
18, 2020. Retrieved April 11, 2026. Team, Digital (February 18, 2020). "acpi® & Masco Cabinetry Merge to Become Cabinetworks Group". Cabinetworks Group
Masco
Family of Intel southbridge microchips
variations existed: 82371SB (PIIX3) Intel SB82371SB (PIIX3) The PIIX4 introduced ACPI support, an improved IDE controller with Ultra DMA/33 support, and an integrated
PIIX
Filesystem in Unix-like operating systems
depending on the mode of power management (if at all), either directory, /proc/acpi or /proc/apm, which predate sysfs and contain various bits of information
Procfs
Family of instruction set architectures
x86-64: added 1 GB pages Extensions x87, IA-32, x86-64, MMX, 3DNow!, SSE, MCA, ACPI, SSE2, NX bit, SMT, SSE3, SSSE3, SSE4, SSE4.2, AES-NI, CLMUL, SM3, SM4, RDRAND
X86
Epistemological theory
Coelho, Ivo (2010). "Foundationalism". In Puthenpurackal, Johnson J. (ed.). ACPI Encyclopaedia of Philosophy. Asian Trading Corporation. ISBN 978-8-17086-574-2
Foundationalism
Restarting a computer system or process
power management features. With Advanced Configuration and Power Interface (ACPI), newer operating systems are able to manage different power states and thereby
Reboot
The Animation Council of the Philippines, Inc. (ACPI) is a non-profit and non-stock organization in the Philippines that specializes in 2D and 3D animation
Animation Council of the Philippines
Animation_Council_of_the_Philippines
System file used by Windows 9x operating systems
SYS, the file is located in the Windows directory. On systems with proper ACPI support and ATX power supply, the PC may power down instead. If the file
LOGO.SYS
filter driver, which may be added on top of the bus driver. For example, an ACPI bus filter is added to support power management for each device. Windows
Filter_driver
Open-source x86 virtualization application
Archived from the original on 2023-01-11. Retrieved 2017-03-28. "Win98SE with ACPI — Success At Last!". forums.virtualbox.org. Archived from the original on
VirtualBox
2000 Microsoft operating system version
suspend/resume operations: The OEM version of Windows Me supports OS-controlled ACPI S4 sleep state (hibernation) and other power management features without
Windows_Me
L2 cache BUS a 400 MHz Supports up to 1 GB of DDR 266 MHz memory Supports ACPI 2.0 and APM 1.2 System Power Management 1.3–1.2 V (SpeedStep) Power: 1.2 GHz
List_of_Intel_processors
Aluminocopiapite (IMA symbol: Acpi) is an aluminium iron sulfate mineral with the chemical formula Al2/3Fe3+4(SO4)6(OH)2·20H2O. Its type localities are
Aluminocopiapite
Type-1 hypervisor
migration for HVM guests, XenAPI 3.2 January 17, 2008 PCI passthrough and ACPI S3 standby mode for the host system. 3.3 August 24, 2008 Improvements for
Xen
Environmentally sustainable computing and information technology
higher compression ratios. The Advanced Configuration and Power Interface (ACPI), an open industry standard, allows an operating system to directly control
Green_computing
Computer instruction which pauses execution
the next hardware interrupt. Advanced Configuration and Power Interface (ACPI) Advanced Power Management (APM) Computer architecture Halt and Catch Fire
HLT_(x86_instruction)
Technical standard in computing
used. Host controller is not managing itself with onboard firmware, but via ACPI and USB4 standard with generic OS drivers, such as Windows 11 USB4 drivers
USB4
Windows specification for power management
recommending Windows laptops. Advanced Configuration and Power Interface (ACPI) Always On, Always Connected Trusted Computing Group (TCG) Unified Extensible
Modern_Standby
Product activation mechanism for Microsoft Windows
activation upon re-installation. In the SLP 2.x implementations, BIOS report the ACPI SLIC table to the operating system. However, since SLP 2.0 was introduced
System Locked Pre-installation
System_Locked_Pre-installation
Open-source implementation of x86 BIOS
Protected mode interfaces, e.g. APM, Legacy PnP, DMI, MPS, SMBIOS, VBE, and ACPI System Management Mode A patch exists to load the SLIC table from a licensed
SeaBIOS
Digital circuit that produces sums from inputs
management Boolean Digital Analog Quantum Switch Power management PMU APM ACPI Dynamic frequency scaling Dynamic voltage scaling Clock gating Performance
Adder_(electronics)
ACPI
ACPI
ACPI
ACPI
Boy/Male
Hindu
Fragrance, Lord Ganesh
Boy/Male
Scandinavian English
God's friend.
Boy/Male
Anglo, Australian, British, English, German, Scandinavian
Army Leader; War Ruler
Girl/Female
Latin
Triumphant.
Boy/Male
Welsh Shakespearean
Little.
Girl/Female
English
meaning from Laurentium.
Surname or Lastname
English
English : variant of Speake.
Girl/Female
Arabic, Muslim, Sindhi
Narrator of Hadith
Boy/Male
Muslim/Islamic
A narrator of hadith
Girl/Female
Teutonic
Eager for war.
ACPI
ACPI
ACPI
ACPI
ACPI