PCI总线数据采集卡Windows NT驱动程序的设计

摘要

The Microsoft Windows operating system insulates the application programmer from dealing with hardware directly. So it is difficult for image processing on real time,such as acquisition,storage and display. This paper studied Kernel mode of Windows NT, and discussed the routine of interruption and DMA,then a device driver program was designed to solve this problem.The method of VDD has a wide application prospect and practical value in real time image processing.%Windows NT操作系统不允许直接访问硬件，给图像的实时采集、存储、显示等处 理工作带来了很大困难。对在核心态下采用编制虚拟设备驱动程序的方法进行探讨，重点讨论了如何在Windows NT下实现数据采集卡的中断和DMA过程并给出了相应例程。对于图像处理工作所要求的实时性及同步性在软件方面提出了一种解决方案。