本文内容来自：http://www.stm32circle.com/hom/index.php
程序说明：
XoX game project - is a clon of Xon,   too old computer game.  Old like a Tetris game.
Game has 4 levels.  Try win.
Archive file  contains  game image.  To install, simply run the .bat file to add game to your  Primer1 device.
Source codes for  CircleOS and Windows versions are free available at www.meraman.com