摘要： 本文所剖析的在多主总线环境下的多机通信协议(以下简称 MIP,即 Multibus InterprocessorProtocol),是在同样的硬件环境下,利用消息传递方式通信的一种机制。它适应范围广,可靠性高。该通信协议建立在iRMX 86/88操作系统之上,它使两个独立的操作系统之间的通信,转变为两个MIP之间的通信。因而,MIP实质为两个独立操作系统进行通信的接口。该接口由三级组成,即虚拟级,逻辑级和物理级。本文最后一部分,提出了一种以设备和通道进行数据结构划分的新技术,它是数据结构选用的理论依据,对提高多机通信系统的实时性具有一定的实际意义。

Abstract: The Multibus Interprocessor Protocol analysed in the text is a communication machanism using message transfer. The protocol over operating system iRMX 86/88 makes data exchanges between operating systems transformed into that between MIP's. MIP, therefore, is an interface communicating between operating systems, which consists of virtual, logical and physical levels. Therefore, in the final part of the text, a new technique of partitioning data construction appears. It is the base of choosing data construction and important for real-time system.