DLX指令集RISC CPU verilog源码，使用哈佛结构可实现十多种指令-DLX instruction set RISC CPU verilog source code, using the Harvard architecture can achieve more than ten kinds of instruction

实现18位操作指令实现PC指针的变化，及得到对应地址的操作指令(Implement 18 bit operation instructions to realize change of pointer and obtain operation instructions corresponding to corresponding address)