一个计算机控制系统的多道程序应用环境

计算机控制系统要完成Ｉ／Ｏ控制，过程控制和数据通信等多项任务，因此是一个多道程序系统，文章介绍一个基于ＲＳＸ－１１Ｍ操作系统，在ＰＤＰ－１１／７３计算机上执行过程控制任务的实际的多道程序系统的设计方法，该方法即应用了操作系统的固有特性，又结合控制系统应用软件的特点，能够很好地解决多采样周期计算机控制系统应用软件的调度问题，而且还能节省大量内存。

APPLICATION ENVIRONMENT OF MULTI-PROGRAMMING FOR A COMPUTER CONTROL SYSTEM

Computer control system is a multi programming system by which the I/O control, process control and digital communication are carried out. This paper presents a design method for practical multi programming system which is based on the RSX 11M operation system and the process control is carried out by PDP 11/73 computer. This method applies the inherent characteristics of operation system and combines with the feature of applied software for control system. It not only solves the task control problem of applied software for computer control system with multi sampling period well, but also saves a large amount of memory. This system need not special hardware, the only thing that the user has to do is to define their own task which should be programmed in PDP 11 format then assembles this program into basic system.