FPGA实现七个实验的源程序。SDRAM测试，按键及PIO口中断实验，定时器实验，seg7实验，sopc_led实验，flash烧写，fpga_led，锁相环。-FPGA realization of the seven experiments of the source. SDRAM test, test buttons and PIO port interrupt, timer experiment, seg7 experiment, sopc_led test, flash program