目前，嵌入式設備的開發(fā)越來越受到重視，嵌入式產品的應用越來越廣泛。在開發(fā)過程所采用的操作系統(tǒng)中，VxWo&s是比較受歡迎的一種。而開發(fā)設備驅動程序是開發(fā)嵌入式系統(tǒng)一個很困難的工作，因為程序員必須十分清楚硬件設備信息，還要小心處理諸如
定時控制等復雜部分。本文描述了在實時操作系統(tǒng)VxWo~s下開發(fā)設備驅動程序，以及如何配置PCI總線設備等方面的研究。

Today，great research eforts have been paid to the embedded devices which are employed in many fields．Among the operating systems in the development，VxWo~s becomes very popular． While writing device drivers is one of the most dificult tasks to develop or
port operating systems． Programmers of device driver must know information about hardware such as specifications of devices and carefully describe complex
parts such as timing contro1． This paper presents some researches in writing device drivers and how to configure PCI devices in the real—time operating system，VxWo~s．