介绍了MPC555与CS8900A扩展以太网的硬件设计图。以NUCLUES PLUS操作系统为基础，介绍了网卡软件驱动程序的编制，给出了以太网协议包嵌入nucleus PLUS操作系统的实现方法。
Abstract:
The Ethernet extension hardware design of MPC555 and CS8900A are introduced,and the software driven program based on nucleus PLUS operation system and the technique that Ethernet protocol embedded in nucleus PLUS real operation system are discussed.
