清华大学电子课程设计：Verilog语言，Quartus可以正确运行，下载到FPGA上可完成PC与FPGA一串数据的连续收发，且实现本地回环，异步串口通信-Verilog language, Quartus can be correctly downloaded to the FPGA to be completed by PC and FPGA transceivers continuous string of data, and implement local loop, asynchron