学习 FPGA 编程和学习基于 Nios 软核处理器应用项目编程而开发的实验平台。里面有大量实用的实验指导方法和详细的操作步骤。(Learning FPGA programming and learning based on Nios soft-core processor application project programming and development of the experimental platform. There are a lot of practical experimental guidance and detailed steps.)