摘要
结合CMTS中PCI地址到Lbus地址映射的实例 ,介绍了其中的映射原理 ,阐述了其中以有限的PCI地址访问庞大Lbus内存的原理 ,并给出在VxWorks中生成访问Lbus内存所需PCI地址的源代码。
The mapping theory is presented in the thesis, which is used in the application of realizing the mapping from PCI address to Lbus address in CMTS. It also describes the theory how to access enormous Lbus memory by the limited PCI address. In the end, the thesis gives the source code in VxWorks, which is needed when the CPU tries to access the Lbus memory.
出处
《中国有线电视》
2005年第2期122-125,共4页
China Digital Cable TV