at91rm9200 上网卡测试程序，包括主函数，初始化函数，及网卡驱动简单程序。-at91rm9200 72.16 testing procedures, including the main functions, initialization function, and the Ethernet driver simple procedures.

嵌入式课程培训时老师给的以太网的资料，很详细。-Teacher training courses embedded Ethernet when the information is very detailed.