一种基于RS-422接口板的网络环境及标准系统接口的设计与实现

The Design and Implementation of Network Environment and Standard System Interface Based on RS-422

摘要: 我们以RS-422通讯接口板作为硬件基础,开发了一个具有五层协议功能(物理层至会话层)的网络环境,并实现了与IBM NETBIOS完全兼容的标准系统调用接口,为dBASE III PLUS等多用户软件提供了必要的运行条件.本文阐述其设计思想及实现方法.

Abstract: Based on the RS-422, we developed a network environment which has the same function as the 5-layer protocal has (i.e. from physical to session layer), and implemented a IBM NETBIOS-compatible standard system calling interface. This system provides necessary operation conditions for multiusers software such as dBASE III PLUS etc.. In this paper, the design idea and implementation method of the system are discussed.