Interrupt controller, interrupt signal pretreating circuit and its interrupt control method

Abstract

This invention relates to an interrupt controller in conformity with the ACPI power management stanadard computer system and an interrupt signal pre-process circuit and its interrupt control method used in said interrupt controller, which can save power in ordinary work of a computer system, the control method includes: when interrupt input signals exist in a judgement system, the gating clock signal in the interrupt control process can deal with the signals properly and introduce the processed signals to an advanced programmable interrupt controller for proper process, when the process is finished, the grating clock signal is pulled to a low level.

Description

technical field [0001] The present invention generally relates to an interrupt control mechanism in a computer system, and more particularly, to an interrupt controller in a computer system conforming to the Advanced Configuration and Power Interface (ACPI) power management standard, and an interrupt signal for the interrupt controller The preprocessing circuit and its interrupt control method can save power consumption when the computer system conforming to the advanced configuration and power interface power management standard works normally. Background technique [0002] Computer system is one of the most important hardware infrastructures in modern information society. In addition to the pursuit of performance, modern computer systems also need to pay attention to the reduction of energy consumption, especially for notebook computers. Reducing energy consumption can prolong the battery life after each charge. Therefore, modern computer manufacturers also regard reducin...

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Problems solved by technology

[0007] However, when the computer system works in the S0 state, interrupts do not occur frequently. Therefore, the interrupt controller must be in the working state of monitoring the occurrence of interrupts. At this time, the strobe clock signal of the interrupt controller needs to exist at the same time so that it can be detected in time. to the interrupt and process it, otherwise it will not be possible to monitor the occurrence of the interrupt

Although this approach can achieve the effect of monitoring at any time, it will also consume excess power.

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