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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.
Power management happens in two ways; through the above-mentioned function calls from the APM driver to the BIOS requesting power state changes, and automatically based on device activity. In APM 1.0 and APM 1.1, power management is almost fully controlled by the BIOS. In APM 1.2, the operating system can control PM time (e.g. suspend timeout).
The sound card Sound Blaster AWE32 PNP CT3990 had a Plug-and-Play ISA Bus interface chip (large square chip, mid of bottom row).. The term Legacy Plug and Play, [1] also shortened to Legacy PnP, [2] describes a series of specifications and Microsoft Windows features geared towards operating system configuration of devices, and some device IDs are assigned by UEFI Forum. [3]
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 is always on when power is supplied to the mainboard. To communicate with the main computer system, several forms of communication can be used, including ACPI, SMBus, or shared memory.
PPD is a popular packaging format for drivers that accept Postscript data or PDF data as input. Due to dominance of select operating systems, the operating system–driver interface is more standardized than driver–printer interfaces. Hence there is more standardization in packaging formats of drivers than the actual functions performed by ...
The benefits of ACPI included support for modern hardware, including advanced power management features, as well as support for IRQs above 15. In addition, the new ACPI driver allowed access to OS/2's symmetric multi-processing support, obviating the need for IBM's proprietary SMP-enablement driver. Consequently, starting with eComStation 2.0 ...
In the context of an operating system, a device driver is a computer program that operates or controls a particular type of device that is attached to a computer or automaton. [1] A driver provides a software interface to hardware devices, enabling operating systems and other computer programs to access hardware functions without needing to ...
American Megatrends, Inc., doing business as AMI, is an international hardware and software company, specializing in PC hardware and firmware. [3] The company was founded in 1985 by Pat Sarma and Subramonian Shankar. [4]