【摘要】 高性能仿真转台多采用集散控制机制 ,由工业PC机构成上、下位机的两级分布式计算机系统 ,为保证转台的性能 ,对两机之间的通讯要求较高。该论文针对仿真转台高实时性的数据传输要求 ,给出了 16位并行通讯系统的具体实现方案 ,研究了设计及实现中的若干技术问题。在国际标准IEEE488总线的基础上 ,利用工业控制PC机的EISA槽扩展 8根数据线 ,开发形成 16位并行接口。以高性能接口芯片μPD72 10为核心 ,设计了 16位并行通讯系统。深入研究了数据传送的实现、8位接口芯片在 16位计算机上的初始化、高 8位数据与低 8位数据的时序同步等问题 ,给出了通讯系统的硬件设计方案和软件流程。实验结果表明 ,该通讯系统性能满足实际需要更多还原

【Abstract】 The DCS system is an usual model in the advanced simulator.To satisfy the high real-time performance of simulator, a design scheme of a 16-bit parallel communication system is presented,and some problems about design and realization are researched.By using the EISA slot of IPC the data line with 8 -bit width are added to the international standard IEEE488 bus,and the parallel interface of 16-bit bus is given. By using μPD7210 interface chip the 16-bit parallel communication interface board is designed and realized.The problems,such as realization of writing/reading of 16-bit data,initialization of 8-bit programmable chip in the 16-bit micro computer system and synchronization between the lower 8-bit data and the higher 8-bit data in the translation sequence,are discussed specially,and the practical circuit and the program flow is given at last.The experiment result shows that the communication system can meet the simulator’s requirement.更多还原