该源码中有一个编译的词法语法语义的分析程序，三个处理及调度程序以及一个8255A的发声控制的汇编语言程序，希望对大家能有帮助-The compiler source code, there is a syntax of lexical semantic analysis of the procedure, three treatment and scheduling procedures, as well as an audible signal to control the 8255A assembly language program, in the hope that we can help