Research And Implementation Of Microcomputer Peripheral Equipment Based On PCI Bus

Microcomputer Principle and Interface Technology is a compulsory course for students majoring in science and engineering of electronic information.since this course is characteristic of being abstract and practical,students have difficulty in their study.The key to studying this course well is to place emphasis on practical teaching.Therefore,developing experiment equipment for Microcomputer Principle and Interface Technology,combining teaching Program and research,is necessary to cultivate students'comprehensive capacity and innovative ideology,which has not only theoretical significance and practical value,but also has some economic benefits and great social effects.The original experiment equipment was single trigger or based on ISA bus, while the current computer motherboard provides users mostly with PCI bus.At the same time, CPLD/FPGA programmable technology obtains a broad application in electronic technology application.Therefore, based on PCI bus, using CPLD/FPGA programmable technology equipment to develop experiment equipment for Microcomputer Principle and Interface Technology is the trend of development.This paper is divided into three parts.First,it conducts a research into the PCI bus technology standard,the PCI9052 bus bridge chip function,serial EEPROM and its system paramte,configuration and the prevention of system bus emulation.On the basis of this research and based on PCI bus ,by using CPLD/FPGA programmable technology,PCI-ISA bus switching circuit is realized,and the switched ISA system bus signal is driven and the driven system bus signal is provided to the external experiment box in the form of DB62.Second,it develops logic circuits of each part in the external experiment box and the PCB design by using Protel 99 software.Third,it carries on the logical simulation to PCI-ISA conversion card circuits by using Max+plusII,and carries on the dynamic debugging of logic circuits of each part in the experiment box by using 8086 Assmbly Language and the DEBUG debugging program.Through simulation and actual dynamic debugging, 50 prototypes have been produced and applied in the undergraduate teaching through local area network link.Through the application, the system structure proves to be reasonable, logical and can meet the demand of teaching, having certain economic benefits and great social effects.