Calculator system

Abstract

The invention provides a calculator system, comprising: a CPU, a north bridge chip, a BIOS, a plurality of hardware modules, a south bridge chip and a complex programmable logic device. The north bridge chip is coupled to the CPU, and the south bridge chip is electrically connected with the BIOS and the north bridge chip. The south bridge chip comprises a serial signal interface including four universal input / output ports as follows: a clock pulse signal port for providing pulse signals; a data input port for transmitting hardware module state information to the BIOS; a data output port for transmitting control instructions from the BIOS; and a data latching port for starting or closing the data input port and the data output port. The complex programmable logic device is electrically connected with the serial signal interface. With the calculator system, a control function of the south bridge chip for the hardware modules can be expanded by fewer universal input / output ports, and control circuits of the hardware modules can be conveniently increased or reduced and modified through the complex programmable logic device.

Description

technical field [0001] The invention relates to a calculator system in a computer, in particular to a circuit design related to a south bridge chip in the calculator system. Background technique [0002] For a computer, the motherboard installed on it, also known as the mainboard, system board, and motherboard, is one of the most basic and important components in the computer. For example, the motherboard is generally a rectangular circuit board, which usually includes a basic input and output system (Base Input Output System, BIOS), an I / O control chip, a keyboard and a panel control switch interface, an indicator connector, an expansion slot, a motherboard and a card. DC power supply connectors, etc. [0003] Specifically, the control chips of the computer motherboard are usually used in groups, and are generally divided into north bridge chips and south bridge chips. Among them, the north bridge chip mainly determines the specifications of the motherboard, support for h...

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, it is necessary to define the respective control functions for the general-purpose input / output ports of the south bridge chip one by one, which not only occupies a large amount of pin resources, but also causes limitations in circuit board wiring, because each The control function of the general-purpose input / output port has been uniquely determined by the wiring connection when designing the circuit wiring. Every addition or modification of the hardware function of the motherboard requires re-modification of the circuit design and re-making of the circuit board.

In addition, the limited pin resources make it possible for the BIOS chip to lose sight of the other when communicating with each hardware module

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