Method and apparatus for realizing interrupt acquisition

Abstract

The invention discloses an interrupt capture implementing method, which includes: monitoring the interrupt request of the more than two external hanging interruption sources, if the interrupt request is received, and if the interruption is enabled and no interruption collision takes place, recording the interruption generating system time and recording the interrupt source corresponding to the interrupt request, and then sending out interrupt request to the central processing unit; the central processing unit responds to the interrupt request, and executes interrupt service. The present invention also discloses an interrupt capture implementing apparatus, including: an interrupt flag register, an interrupt information recording module, an interrupt processing module, a central processing unit interface module and an interrupt enable register and central processing unit, for the realization of interrupt request capture to a plurality of external hanging interrupt sources and effective servings to the interruption.

Description

technical field [0001] The invention relates to interrupt technology, in particular to a method and device for realizing interrupt collection. Background technique [0002] In the early days of the emergence of the central processing unit (CPU), its processing capacity was very limited, the external interface of the computer system was not complicated, and there were not many external devices connected, so there were not many interrupts for these external devices to request services, so the central processing unit reserved There are not many external interrupt pins. [0003] With the continuous upgrading of the processing power of the central processing unit, the computer system becomes more and more complex, more and more transactions need to be processed, and more and more external devices are plugged in; however, due to the limitation of the size of the CPU chip, sometimes the central The processing unit does not provide an independent interrupt pin for each external dev...

AI Technical Summary

Problems solved by technology

The patent application mentions the implemented system, but rarely mentions the internal implementation process of APIC

Moreover, although APIC has the feature of programming, its function always has certain limitations in scalability, and it cannot be specifically designed and expanded according to needs.

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