摘要
本文介绍了发电机状态检监测仪中CAN智能适配卡的功能和硬件组成,详细讨论了ISA总线及单片机对双口RAM的地址空间的分配。针对ISA总线和卡上单片机同时对双口RAM读写数据时的仲裁问题,提出了一种硬件判优的实现方法。并对适配卡的软件设计进行了总体上的阐述。
In this paper, the function and the components of an CAN intelligent adapter in station monitor of generator are introduced, and the techniques of allotting memory of the ISA BUS and the microprocessor to dual-port RAM are discussed in detail. Due to the arbitration problems while the ISA BUS and the microprocessor access the dual-port RAM at the same time, the hardware arbitration are presented,and the design of software are illuminated in general.
出处
《工业控制计算机》
2001年第8期23-25,共3页
Industrial Control Computer
