| 一种高效的基于ASIPs的EPIC指令编码方法 |
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| 引用本文： | 江山刚,张晓彤,王沁. 一种高效的基于ASIPs的EPIC指令编码方法[J]. 计算机工程, 2007, 33(3): 251-252 |
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| 作者姓名： | 江山刚 张晓彤 王沁 |
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| 作者单位： | 北京科技大学计算机系,北京,100083 |
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| 摘 要： | EPIC技术不仅广泛应用于通用CPU的设计中，而且它还被应用于专用领域的专用指令集处理器(ASIPs)的设计中。目前使用的EPIC技术的性能提高是以程序代码量的急剧膨胀为代价的。为了减少EPIC程序代码长度，该文提出了一种新的指令编码方法——动态变长指令编码方法。测试结果表明，对于低编码率的语音编解码领域的ASIPs，动态变长指令编码方法可以将代码的压缩率提高到62.8%。
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| 关 键 词： | 显示并行指令计算 专用指令集处理器 指令编码 动态变长 |
| 文章编号： | 1000-0428（2007）03-0251-02 |
| 修稿时间： | 2006-03-18 |
High Efficiency Instruction Encoding Method Based on EPIC in ASIPs |
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| JIANG Shangang,ZHANG Xiaotong,WANG Qin. High Efficiency Instruction Encoding Method Based on EPIC in ASIPs[J]. Computer Engineering, 2007, 33(3): 251-252 |
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| Authors: | JIANG Shangang ZHANG Xiaotong WANG Qin |
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| Affiliation: | Dept. of Computer, University of Science and Technology Beijing, Beijing 100083 |
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| Abstract: | EPIC technology is applied not only to the designs of general-purpose CPU, but also to application specification instruction set processors (ASIPs) in application specific domain. But its high performance is at a cost of sharp expansion of EPIC program code. To solve it, this paper presents a new encoding method——dynamic variable-length encoding. Tests indicate that the method can achieves an average static code compression ratio of 62.8% in speech algorithm of low encoding code. |
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| Keywords: | Explicitly parallel instruction computing(EPIC) ASIPs Instruction encoding Dynamic variable-length |
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