说明：  本文从学习者的角度出发,分别描述了下面几部分内容: ARM 编程的基本知识,BOOT 代码流程和功能分析,OS 中断程序的编写举例 和 BOOT 代码的流程图,希望这些内容能为初学 ARM 的朋友拨开迷雾,以最快 的速度和最短的时间走进嵌入世界的大们.
(From the learner' s point of view, describe the contents of the following sections: ARM basic knowledge of programming, BOOT code flow and functional analysis, flow charts and code writing OS BOOT interrupt routine, for example, hope this can do for the beginner ARM friends fog, with the fastest speed and shortest time into the embedded world are big.)