嵌入式系统的资源有限，应用程序通常都是固化在ROM中运行。ROM中的程序执行前，需要对系统硬件和软件运行环境进行初始化。这些工作是用汇编语言和C语言编写的Bootloader代码完成的-Embedded systems with limited resources, applications are usually curable run in ROM. ROM in the implementation of the procedures required before the system hardware and software operating environment is initialized. These work with assembly language and C language code completed Bootloader