说明：  结合ez80和ARM7两种系统上的具体实现，说明了如何在嵌入式实时操作系统uC/0SII上移植实现LwIP这套TCP/IP协议栈，使uC/0S II成为支持网络的RTOS。
(Ez80 and ARM7 combining the two systems to achieve specific, how in the embedded real-time operating system to achieve LwIP transplantation uC/0SII on this TCP/IP protocol stack, so that uC/0S II as a support network of the RTOS.)