dos下的WATTCP编程库，包含调试工具，和代码，使用说明，网卡驱动，可以直接使用。
WATTCP under dos programming library, including debugging tools and code, instructions for use, NIC driver, can be used directly. (2016-03-02, DOS, 1386KB, 下载2次)
实模式 dos下的TCP/IP编程库(wattcp)及代码例子
Under real mode dos TCP/IP programming library (wattcp) and code examples (2011-12-15, DOS, 1544KB, 下载12次)
关于TCP/IP的详细内容，网络编程相关方面
On the TCP/IP details of the relevant aspects of network programming (2008-04-17, DOS, 126KB, 下载8次)