这是一个smileOS，smileOS是一个牛人写的小型操作系统，而且是开源的，初学者通过它可以轻易学习操作系统原理。文档里有smileOS的下载地址，和详细说明。-This is a smileOS compiler tutorial, smileOS is a small operating system written by a cow, a beginner can easily learn the principles of operating systems. Documentati