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阐述了双微机系统通信的三种接口设计方案,分别对双机数据交换的几种方式进行比较分析,介绍了各方式下的硬件组成、控制逻辑、协议、软件流程等。详细介绍了采用双端口存储器为主存储体的接口电路的设计,该接口电路已开发完成,并多次投入使用,功能完好,性能稳定。
Three interface design schemes of dual-computer system communication are expounded. Several methods of data exchange between dual-computer system are analyzed respectively. The hardware components, control logic, protocol and software flow of each mode are introduced. The design of the interface circuit using dual port memory as the main memory bank is introduced in detail. The interface circuit has been developed and put into use many times, with good functions and stable performance.