extended instruction meaning in English

扩展命令

Finally , by using hardware / software co - evaluation method to calculate the memory space the cpu cycles used and the gates that the extended instruction added , the performance of the whole system is analyzed
最后，通过软件上统计存储空间和运行时间，硬件上对比添加指令硬件单元前后的综合门数的软硬件协同评估方法分析了添加指令后的系统性能。
In this dissertation , the hardware / software co - design flow and ac3 decoding algorithm is analyzed and the ac3 audio decoding on the virgo risc - core . then the extended instruction is added to lessen the cpu cycles used and to reduce the memory space used by the decoding program
其次，本文在分析软硬件协同设计流程和ac3解码算法以及risc核virgo上实现ac3音频解码的基础上，扩展指令集增加特殊指令减少了ac3解码的时间和解码程序占用的空间。
That is , after decoding ac3 bit stream by software , the models are set up for the key sub - functions to get the extended instructions of risc core and the key operation is mapped to special instructions . next , the detail hardware of extended instruction is given
通过对ac3解码汇编程序及其在virgo核上运行的结果进行分析提取出占用cpu运行时间较多的子函数，再对这些子函数建立模型提取出关键操作并将其综合成特殊指令，文中给出了这些指令的具体硬件实施框架和原理。