摘要
目前VxWorks操作系统及其图形支持库WindML已经在很多领域得到了广泛的应用。但由于WindML本身支持的硬件少,提供的分辨率低等因素,往往不能满足在实际运用的要求,使得自行开发显卡驱动越来越有必要。但缺少相应的文档,显卡驱动程序的开发是比较困难的。在此以Intel855GME芯片组为例,介绍了基于VxWorks操作系统图形支持库WindML基础上的显卡驱动程序开发,对其整个流程进行描述。一方面通过调用一些WindML标准API函数,另一方面对显示芯片的相关寄存器进行设置。实现了高分辨率图像在WindML环境下的显示,讨论了在开发中需要注意的问题。
VxWorks operation system and WindML have been widely used in many fields. The graphics device driver developed autonomously for solving the unappeasable requirement in practical application of less hardware and low resolution provided by WindML. The development of graphics device driver on VxWorks is difficult in defect of relevant document. The circuit of graphics device driver development on WindML of VxWorks was designed. The high resolution image displayed in WindML is realized by transfering standard API function and setting associate registers.
出处
《现代电子技术》
2010年第14期78-80,共3页
Modern Electronics Technique
