class data_mem:
    memory=[8*'0']*4*1024*16
    def mem(self,write_en,read_en,address,data_in,funct3):      #写使能，读使能，(使能为int的0或1)地址，输入数据，func3              #输出为data_out
        if write_en:
            if funct3=='000':
                pass
            elif funct3=='001':
                pass
            elif funct3=='010':
                pass
            else:
                pass

        if read_en:
            if funct3=='000':
                pass
            elif funct3=='001':
                pass
            elif funct3=='010':
                pass
            elif funct3=='100':
                pass
            elif funct3=='101':
                pass
            else:
                pass