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一引言目前,多微机系统在许多方面得到了应用,诸如工业机器人控制,数控机床控制等。于是,多机之间的通讯便成为多机系统的技术关键。特别是对数据传送有特殊要求场合,更要解决好多机间的通讯问题。如在工业机器人的控制中,对数据的传送就有如下要求:1,主、从机要共享许多数据。2,主机、从机需要快速交换信息。在这种特殊要求下,传统的串行、并行通讯就难以满足要求,而采用多机共享RAM 电路,既能满足要求又具有简单、可靠、通用性好等优点。
I. INTRODUCTION At present, many microcomputer systems are used in many aspects, such as industrial robot control, CNC machine control and so on. Thus, the communication between multiple machines has become the key technology of multi-machine system. Especially for data transfer has special requirements occasions, but also to solve the problem of communication between many machines. As in the control of industrial robots, the transmission of data has the following requirements: 1, master and slave to share a lot of data. 2, host, slave need to exchange information quickly. Under such special requirements, the traditional serial and parallel communication can hardly meet the requirements. However, adopting a multi-machine shared RAM circuit can not only meet the requirements but also have the advantages of simplicity, reliability and versatility.