网上有许多关于DM9000网卡芯片的介绍，然而这些介绍大多是关于Linux或WinCE下的驱动程序或移植，很少有介绍单片机驱动DM9000的例子。本文详细介绍了调试DM9000E的过程，仅供参考。-There are many online card chip on the DM9000 introduction, however, most of these presentations are on Linux or WinCE driver or under the transplantat