用于vga显示，和图像的旋转，本程序部分可用作VGA接口，在此基础上惊醒图形在FPGA中的存储，显示和旋转。-For vga display, and image rotation, this program can be used as part of the VGA interface and graphics on this basis, awakened in the FPGA, storage, display and rot

FPGA内部sin_ROM.VHDL和COS_ROM.VHDL文件-FPGA internal sin_ROM.VHDL and COS_ROM.VHDL file