说明：  arm7的软件开发文档.embed开发板,应用uClinux操作系统.主要讲的是uClinux系统上的应用开发和驱动程序开发.很不错.
(ARM7 software development documents. embed development board, the application uClinux operating system. The main talking about uClinux on the system application development and driver development. is pretty good.)