摘要
分析了中断的原理与延迟以及系统响应的实时特性 ,介绍了Windows 95下对硬件I/O端口和内存物理地址的访问原理 ,分析了DMA编程的特点。了解和掌握这些特性 ,就能在系统对实时性要求不高时 ,利用Windows 95操作平台设计控制系统的软件。
The procedure and latency of interruption are presented.The methods to access physical memory and I/O port under Windows 95 are discussed. The programming for DMA control is also presented. These are key points for the design of real time control software. These methods have been applied in a real time vibration control system and the result is satisfied.
出处
《测控技术》
CSCD
2000年第12期32-34,共3页
Measurement & Control Technology
