摘要： 通过利用媒体核心算法评估RISC3200的第一代媒体扩展指令集MDS-I的性能，发现MDS-I存在数据处理效率高但数据供应效率低的特点。基于该原因扩展了用于数据供应的第二代媒体扩展指令集MDS-II。实验结果表明，在扩展媒体指令集后，RISC3200的媒体核心算法的处理性能提高2~5倍左右。

关键词: 微处理器, 精简指令集, 媒体应用, 指令扩展

Abstract: By using the media kernel algorithms to evaluate the performance of MDS-I, the first generation media extension sets of RISC3200, it is found that MDS-I sets have powerful media data processing ability but awkward media data providing ability. The MDS-II sets for high efficiency media data provision is extended. Experimental results show MDS sets of RISC3200 can achieve about 2~5 speedups for media kernel algorithms compared with its MDF sets.

Key words: microprocessor, RISC, media application, instruction extension

中图分类号: 

• TP313