| 《computer composing principle》is a practical course. The goal is make students obtain knowledge of this course and fundamental design methods of computer system by experiments.The traditional experiments were based on testbed,the content of experiments weretedium and could be completed by only the same steps,therefore, the creativities of students are limited. Although the experiment of computer system can develop the creativities of students which make students assemble the existing module such as ALU MEM REG to design a complete computer system, but they still lack of initiative.We adopted FPGA chip and QuartusⅡsimulation software as experimental platform, thoroughly improve the flexibility of existing experiments. This technology can be written by VHDL language to implement different hardware logic and can be loaded on FPGA chip in the experiment. Because the FPGA chip is programmable, it makes hardware function can be programmed by software, this is called "soft" hardware,it is a new system design concept and makes the experiment system can be practiced with strong flexibility and adaptability and makes it possible that students can design different experiments according to their thoughts.This paper based on FPGA chip and QuartusⅡsimulation software and a set of classical experiments were designed, allowing students to maser computer principle knowledge through the experiments.The experiments will be designed from simply to complicated, from partially to totally, repeating the process of hardware design, so as to strengthen knowledge.This paper is divided into three parts, the first part introduced the design processes of CPU and implementation. The second part include fundamental experiments of CPU.This part is mainly based on the first part, it together all kinds of logic components and made components can work collaboratively with timing control, and finally product a CPU with basic functions. The third part is the pipeline experiment, pipeline is an important means to improve CPU performance, with this experiment students can obtain the basic principle of pipeline.With the research of this article, a mentality and reference of FGPA in practical teaching is provided. |
