通过学习本DSP程序与外部RAM的读写数据，能够为以后写比较大的程序时，在仿真运行时内部RAM不够用时，可利用外部RAM来进行，当然这需要.CMD文件来配置。-The DSP program by learning to read and write data to external RAM can be written for future large program, the internal RAM in the simulation run time is not enough, you