说明：  nios 环境下12864液晶驱动程序，封装了任意坐标画点、循环画点，任意坐标数值显示和字符串显示程序，附加一幅世界地图源码
(Nios environment 12864 LCD driver package of arbitrary coordinates of painting, the cycle of paintings, the arbitrary numerical display and the string coordinates display program, a map of the world an additional source)