A new microcomputer interface experiment platform based on pci and fpga
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An experimental platform and interface technology, applied in teaching models, educational appliances, instruments, etc., can solve problems such as poor scalability and maintenance, lack of innovative experimental conditions, and no support for interface chip logic, achieving great flexibility and strong real-time. Good effect of sex and flexibility, stability
Inactive Publication Date: 2011-12-21
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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[0005] The technical problem solved by the present invention is to provide a new type of open microcomputer interface by overcoming the problems that the current domestic microcomputer interface experiment platform does not support interface chip logic programming and PC online programming, lacks the conditions for carrying out innovative experiments, and has poor scalability and maintainability. The innovative experimental platform can enable students to deeply understand the principle of microcomputer interface experiments, carry out independent interface experimental circuit design, fully develop students' creativity, and exercise students' research and development ability and practical ability
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[0038] In order to facilitate those skilled in the art to understand and implement the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0039] Such as figure 1 Shown, the present invention mainly is made up of advanced experiment area, core board area and peripheral experiment area three parts, and advanced experiment area comprises PCI, ISA interface, bridge chip, memory; Core board area comprises 8253,8255,8251,8279,8259 Traditional interface chips and FPGA; the peripheral experiment area includes LED and DIP switch modules, digital tube modules, speaker modules, stepper motors, DC motors, keyboard modules, AD / DA modules, and clock modules.
[0040] Such as figure 2 As shown, the FPGA is the XC3S250E of XILINX, which is connected to the PC host computer with JTAG, and connected with the peripheral area with a cable. The power supply uses a power conversion module to ...
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Abstract
The present invention is based on bus (PCI bus and ISA bus), multi-platform (PC platform and embedded platform), multi-module (interface chip module and IO module) architecture, and it is mainly composed of bus bridge circuit, interface core circuit and peripheral circuit The area consists of three parts, the bus bridge circuit includes PCI to ISA interface, bridge chip, memory, power drive; the interface core circuit includes FPGA chip and 8253, 8255, 8252, 8279, 8259 interface chip; peripheral circuit includes LED and dial code Switch module, digital tube module, speaker module, stepper motor, DC motor, keyboard module, AD / DA module, clock module. The three components of the experimental platform are connected through the bus respectively. In addition to completing 16-bit or 32-bit microcomputer principles and interface technology course experiments, the present invention can also carry out interface chip logic design and function expansion experiments, and can be used for other course experiments, course design, professional training, graduation design and electronic competition.
Description
technical field [0001] The invention relates to a microcomputer interface experiment platform, especially an open multipurpose experiment platform that enables students to independently design, explore and innovate. The invention belongs to the field of microcomputer interface technology and embedded system. Background technique [0002] Traditional microcomputer principles and microcomputer interface experiments mostly use 16-bit platforms under the X86 architecture, which can no longer meet the needs of today's technological development and the teaching and research of undergraduates and postgraduates. Foreign related computer courses have used HDL language to introduce hardware circuits, input and output, and truth tables. While learning traditional interface circuits, students also learned how to use HDL language to design interface circuit logic. [0003] Among the existing experimental platform patents, 200620096822.7 Wuhan University’s embedded electronic design auto...
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