CN101630182A - Computer system capable of configuring SIO - Google Patents

Abstract

The invention discloses a computer system which is capable of configuring SIO, belonging to the technology of computer interface, comprising a computer mainboard, a South Bridge chip and a universal interface, wherein, the South Bridge chip and the universal interface are both arranged on the computer mainboard; the computer mainboard is added with an FPGA chip, an FPGA configured logic, an FPGA configured selection logic and a CPLD, wherein, the FPGA chip is an expandable SIO chip; the FPGA chip is connected with the universal interface; the FPGA chip is connected with the South Bridge chip on the computer mainboard through an LPC bus in a hooking way; the FPGA configured logic comprises a configuration file and a FLASH, wherein, the configuration file is stored in the FLASH which is connected with the CPLD; the FPGA configured selection logic is logically connected with the CPLD which is connected with the FPGA chip. The computer system which is capable of configuring SIO in the invention can ensure that the universal computer mainboard expands required interface according to requirements of practical work.

Description

The computer system of a kind of configurable SIO

Technical field

The present invention relates to a kind of Computer Interface Technology field, specifically the computer system of a kind of configurable SIO.

Background technology

On computer motherboard, SIO is SuperIO chip (a super I/O chip), generally is positioned at computer motherboard lower left or upper left side, and it provides the control and treatment function for the standard I/O interface on the mainboard.Processing capacities such as PS/2 keyboard, PS/2 mouse, serial ports COM, parallel port LPT interface that SIO is integrated, and these interfaces all are the equipment of I/O at a slow speed in the computing machine.The major function of SIO comprises to be responsible for handling from the next serial data of device transmission such as keyboard, mouse, serial line interface, they are converted into parallel data, also be responsible for simultaneously the transmission and the processing of parallel interface, floppy drive interface data, other high-speed equipment on they and the south bridge is complementary.

Yet the interface that general calculation machine mainboard tends to have in a lot of real works is not enough, and the interface that has use less than phenomenon, cause the very big wasting of resources.If at individual applications, make corresponding mainboard, production cost is increased greatly.

Summary of the invention

Technical assignment of the present invention provides a kind ofly guarantees that general calculation machine mainboard can expand the computer system of a kind of configurable SIO of required interface according to the real work needs.

Technical assignment of the present invention is realized in the following manner, comprises computer motherboard, South Bridge chip, general-purpose interface, and South Bridge chip and general-purpose interface all are arranged on the computer motherboard; On computer motherboard, increase fpga chip (FPGA is the abbreviation of Field-Programmable Gate Array, i.e. field programmable gate array), FPGA configuration logic, FPGA selection of configuration logic and CPLD (ComplexProgrammable Logic Device is a CPLD); Fpga chip is extendible SIO chip, is connected to general-purpose interface on the fpga chip, and fpga chip is hooked together by the South Bridge chip on lpc bus and the computer motherboard; The FPGA configuration logic comprises configuration file and FLASH, and configuration file stores is in FLASH, and FLASH connects CPLD; The FPGA configuration is selected then, and logic connects CPLD; CPLD connects fpga chip; Fpga chip can be configured the interface requirement that satisfies different general-purpose interfaces.

General-purpose interface comprises serial ports, parallel port, interface with floppy disk driver, mouse interface, keyboard interface.

The configurable step of fpga chip is:

(1), the general-purpose interface that needs of FPGA selection of configuration logical foundation real work, be configured model selection, describe its configuration mode by VHDL or VerilogHDL in the FPGA selection of configuration logic and after comprehensive, be downloaded among the CPLD;

(2), the configuration file stores of the various general-purpose interfaces of FPGA configuration logic in FLASH, FLASH and CPLD communicate each other;

(3), CPLD selects corresponding configuration file according to the configuration mode of describing in the FPGA selection of configuration logic from the FLASH of FPGA configuration logic, be downloaded in the fpga chip then;

(4), the configuration file of fpga chip by being downloaded into, thereby support the general-purpose interface that real work needs, fpga chip is hooked together by the South Bridge chip on lpc bus and the computer motherboard, finishes mutual communication.

The beneficial effect of the computer system of a kind of configurable SIO of the present invention is, substantially do not increasing under the situation of computer motherboard complexity, making the multi-purpose computer mainboard, visual real work situation difference, change the kind and the quantity of its interface, for real work facilitates; Reasonable in design, simple in structure, be easy to processing, easy to use; Thereby, have good value for applications.

Description of drawings

The present invention is further described below in conjunction with accompanying drawing.

Accompanying drawing 1 is the circuit structure block diagram of the computer system of a kind of configurable SIO.

Among the figure: 1, FPGA configuration logic, 2, FPGA selection of configuration logic, 3, CPLD, 4, fpga chip, 5, lpc bus, 6, South Bridge chip, 7, general-purpose interface, 8, computer motherboard.

Embodiment

Explain below the computer system work to a kind of configurable SIO of the present invention with reference to Figure of description and specific embodiment.

Embodiment:

The computer system of a kind of configurable SIO of the present invention, its structure comprise computer motherboard 8, South Bridge chip 6, general-purpose interface 7, and South Bridge chip 6 and general-purpose interface 7 all are arranged on the computer motherboard 8; On computer motherboard 8, increase fpga chip 4, FPGA configuration logic 1, FPGA selection of configuration logic 2 and CPLD3; Fpga chip 4 is extendible SIO chip, is connected to general-purpose interface 7 on the fpga chip 4, and fpga chip 4 is hooked together by the South Bridge chip 6 on lpc bus 5 and the computer motherboard 8; FPGA configuration logic 1 comprises configuration file and FLASH, and configuration file stores is in FLASH, and FLASH connects CPLD3; The FPGA configuration is selected then, and logic 2 connects CPLD3; CPLD3 connects fpga chip 4; Fpga chip 4 can be configured the interface requirement that satisfies different general-purpose interfaces 7.

General-purpose interface 7 comprises serial ports, parallel port, interface with floppy disk driver, mouse interface, keyboard interface.

The configurable step of fpga chip 4 is:

(1), FPGA selection of configuration logic 2 is according to the general-purpose interface 7 of real work needs, is configured model selection, describe its configuration mode by VHDL or VerilogHDL in the FPGA selection of configuration logic 2 and after comprehensive, be downloaded among the CPLD3;

(2), the configuration file stores of the various general-purpose interfaces of FPGA configuration logic 1 in FLASH, FLASH and CPLD3 communicate each other;

(3), CPLD3 selects corresponding configuration file according to the configuration mode of describing in the FPGA selection of configuration logic 2 from the FLASH of FPGA configuration logic 1, be downloaded into then in the fpga chip 4;

(4), the configuration file of fpga chip 4 by being downloaded into, thereby support the general-purpose interface 7 that real work needs, fpga chip 4 is hooked together by lpc bus 5 and South Bridge chip 6 on the computer motherboard 8, finishes mutual communication.

Except that the described technical characterictic of instructions, be the known technology of those skilled in the art.

Claims (3)

1, the computer system of a kind of configurable SIO, comprise computer motherboard, South Bridge chip, general-purpose interface, South Bridge chip and general-purpose interface all are arranged on the computer motherboard, it is characterized in that increasing on computer motherboard fpga chip, FPGA configuration logic, FPGA selection of configuration logic and CPLD; Fpga chip is extendible SIO chip, is connected to general-purpose interface on the fpga chip, and fpga chip is hooked together by the South Bridge chip on lpc bus and the computer motherboard; The FPGA configuration logic comprises configuration file and FLASH, and configuration file stores is in FLASH, and FLASH connects CPLD; The FPGA configuration is selected then, and logic connects CPLD; CPLD connects fpga chip; Fpga chip can be configured the interface requirement that satisfies different general-purpose interfaces.

2, the computer system of a kind of configurable SIO according to claim 1 is characterized in that general-purpose interface comprises serial ports, parallel port, interface with floppy disk driver, mouse interface, keyboard interface.

3, the computer system of a kind of configurable SIO according to claim 1 and 2 is characterized in that the configurable step of fpga chip is:

(1), the general-purpose interface that needs of FPGA selection of configuration logical foundation real work, be configured model selection, describe its configuration mode by VHDL or VerilogHDL in the FPGA selection of configuration logic and after comprehensive, be downloaded among the CPLD;

(2), the configuration file stores of the various general-purpose interfaces of FPGA configuration logic in FLASH, FLASH and CPLD communicate each other;

(3), CPLD selects corresponding configuration file according to the configuration mode of describing in the FPGA selection of configuration logic from the FLASH of FPGA configuration logic, be downloaded in the fpga chip then;

(4), the configuration file of fpga chip by being downloaded into, thereby support the general-purpose interface that real work needs, fpga chip is hooked together by the South Bridge chip on lpc bus and the computer motherboard, finishes mutual communication.

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