Serial interrupt processing method and device and computer system

Abstract

The invention is suitable for the computer field, in particular to a serial interrupt processing method and device and a computer system. Two input ends of the serial interrupt processing device are respectively connected with a reference clock generator and a PCI-to-ISA (Peripheral Command Indicator-to-Industry Standard Architecture) bridge; the output end of the serial interrupt processing device is connected with a CPU (Central Processing Unit) and comprises an interrupt mode processing module and / or an enquiry mode processing module, wherein the interrupt mode processing module is used for converting a serial interrupt signal output by the PCI-to-ISA bridge into a parallel interrupt signal in an interrupt mode; the enquiry mode processing module is used for converting a serial interrupt signal output by the PCI-to-ISA bridge into a parallel interrupt signal in an enquiry mode; and the interrupt which the parallel interrupt signal responds to is one of external interrupts permittedby a computer system. The computer system provided by the invention can process serial interrupts output by the PCI-to-ISA bridge without connection with a south bridge and has the advantages of low production cost, compact structure and easiness for miniaturization.

Description

technical field [0001] The invention belongs to the field of computers, and in particular relates to a serial interrupt processing method, device and computer system. Background technique [0002] Industry Standard Architecture (Industry Standard Architecture, ISA bus) is a bus standard developed by IBM for PC / AT computers. It is a 16-bit bus architecture, also known as the AT standard. In 1987, IEEE (Institute for Electrical and Electronic Engineers, Institute of Electrical and Electronics Engineers) formally formulated the ISA bus standard (IEEE-996). [0003] PC / 104 is an extension of the ISA (IEEE-996) standard and is an embedded bus specification. In 1992, PC / 104 was adopted as a basic document, called IEEE-P996.1 Compatible PC Embedded Module Standard. PC / 104 is an industrial control bus defined specifically for embedded control. IEEE-996 is the ISA industrial bus specification. The IEEE Association defines the PC / 104 industrial bus specification as IEEE-P996.1, so ...

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Problems solved by technology

[0014] The object of the present invention is to provide a kind of serial interrupt processing method, device and computer system, aim at solving the computer system that does not have special-purpose serial interrupt processing interface module can't handle the serial interrupt signal that PCI-to-ISA bridge outputs The problem

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