WMMX技术及应用

WMMX technology and application

随着无线技术的发展进步,手持设备如PDA等有了更广泛的应用空间,要求在Wireless网络以及多媒体方面的性能必须有大幅度提高。在Intel 2004年4月发布的PXA 27x处理器中,新加入的WMMX技术是其降低能耗与提高媒体程序效率的关键技术,专门用于在无线网络环境以及多媒体应用场合下增强代码效率。在介绍了WMMX技术的要点、同MMX与SSE的兼容性、编程模型等之外,演示了如何将WMMX技术在2Dgraphics场合下进行应用以提高系统对Bitmap进行操作的性能。

With the development of wireless network technology, handheld devices such as PDAs have a wider application area, As a result, the performance in wireless network and multimedia applications must be significantly improved. In the PXA27x processor which Intel announced on April, 2004, the newly introduced WMMX technology is the key feature to improve the multimedia application＇s performance while the power consumption rate drops. WMMX is specially designed for the wireless, multimedia and power saving environment. After introducing the key features of WMMX, there are also analysis of compatibility between WMMX and MMX, WMMX and SSE. There is also an example on how to integrate the WMMX technology into 2D graphics driver to improve the data throughput of bitmap operation.