Restarting system for programmable central processing unit and method thereof

Abstract

The invention relates to a restarting system for a programmable central processing unit and a method thereof. The system comprises a power saving mode confirmation unit, a starting mode selection unit and a storage unit, wherein the storage unit stores a master control program which comprises an interrupt servicing sequence execution instruction and a start starting execution instruction; therefore, before a central processing unit enters a power saving mode, selection data is firstly written into the starting mode selection unit; confirmation state data is written into the power saving mode confirmation unit so as to conveniently enter a power saving mode state; after the central processing unit receives an interrupt signal, the master control program reads a corresponding instruction according to the selection data; according to the content of the read instruction, a corresponding opening mode is carried out; selectivity is better if being compared with the selectivity of a common system; and the operation efficiency of an integral system is improved.

Description

technical field [0001] The present invention relates to an electronic signal processing technology, in particular to a system and method for restarting a programmable central processing unit, which provides that when the system restarts after entering the power saving mode, it enters the interrupt service sequence immediately after starting The startup mode and the direct startup mode that skips the interrupt service sequence provide users with multiple choices. Background technique [0002] The central processing unit (CPU) is an integrated circuit of electronic circuits, which is also the circuit in the computer for processing, control and storage. Various calculations, input and output, and connection memory in the computer are executed and controlled by the central processing unit. [0003] And if the computer is in the standby (standby) state, in order to save power, the central processing unit will also be in the power saving mode (power down mode), until after receiv...

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Problems solved by technology

[0004] However, the traditional opening procedure is that after the central processing unit receives an interrupt signal, it will first enter an interrupt service sequence, execute the interrupt content in the interrupt service sequence, and then continue the action before the power saving mode (such as executing halfway application program), however, this kind of operation is time-consuming and non-selective. Even if the interrupt content in the interrupt sequence is empty, the CPU still needs to execute this program, and then execute the action before the interrupt. Cause time consumption, and then affect the efficiency of the overall operation of the system

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