这个整体的代码是8051的IP核，相信对于学习处理器和CPU架构的朋友，都会有很大帮助。-The overall code 8051 IP core, I believe that learning processor and CPU architectures friends, there will be a great help.

8051单片机音乐演奏源码，本人学习过程中使用的。-8051 music source, I used the learning process.