对FPGA的配置芯片EPCS进行读写操作,由于FPGA内部没有掉电可存储的空间,可肥EPCS当作EEPROM用.-The configuration of the FPGA chip EPCS to read and write operations, there is no power-down may be due to the internal FPGA memory space, EEPROM can be used as a fertilizer EPCS.