我自己写的一个tcp/ip的代码，很短，用的是vc来做模拟调试的，具体的运行是要在mcs51单片机上的，只有一个端口。具体请大家看程序吧！-I wrote it myself a tcp / ip code, in a very short, it was vc do simulation testing, the specific operation is to mcs51 MCU, only one port. Please refer to specific procedures!

51单片机+rtl8019的tcp/ip协议栈,仿真环境proteus.-51 microcontroller rtl8019 the tcp / ip protocol stack, simulation environment proteus.

基于arm7在proteus的enc28j60的仿真，它嵌入的TCP/IP协议栈是UIP-A proteus simulation in proteus ,is very good tcp/ip code