PCI总线的开发包括PCI硬件的开发以及相应驱动程序的编写。PCI总线

驱动程序的实质是通过相应板卡配置空间的访问来配置系统资源。该文通过对配

置空间的分析，给出了不用DDK、WINDRIVER等开发工具，而直接用I／O命令简

单地访问配置空间的方法。-PCI Bus PCI hardware development, including development and preparation of the corresponding driver. PCI bus driver is essentially through the corresponding configuration space access board to configure the system resources. Through the analysis of the configuration space is given not DDK, WINDRIVER such as development tools, and direct use of I/O command simply visit the configuration space approach.