预览加载中，请您耐心等待几秒...

RISC、CISC技术比较与研究.docx

预览
1/3
2/3
3/3

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

RISC、CISC技术比较与研究 Introduction Withtherapiddevelopmentofcomputertechnology,thedesignofcomputerprocessorarchitectureshasevolvedfromcomplexinstructionsetcomputing(CISC)toreducedinstructionsetcomputing(RISC).Botharchitectureshavedifferentapproachestowardsinstructionexecution,registerusage,andmemorymanagement.ThispaperisaimedatexploringthedifferencesbetweenRISCandCISCarchitectures,theiradvantages,disadvantages,andfuturetrends. WhatisCISC? CISCstandsforcomplexinstructionsetcomputing,whichisanarchitecturethatallowsinstructionstoperformmultipleoperationsinasinglecycle.TheCISCarchitecturehasalargenumberofinstructions,whichcanperformawiderangeoftasks,includingarithmeticoperations,memoryaccess,conditionalandunconditionalbranching,andinput-outputoperations.InstructionexecutioninCISCprocessorsrequiresacomplexdecodingstage,whichinvolvesbreakingdowntheinstructionintomicro-instructionsbeforeexecutingthem. WhatisRISC? RISCstandsforreducedinstructionsetcomputing,whichisanarchitecturethatemphasizessimpleinstructionswithafixedsize,reducedinstructionset,andsimplifiedinstructionexecution.TheRISCarchitecturehasareducednumberofinstructions,whichsimplifiesthedecodingstageandenablesfasterinstructionexecution.RISCprocessorsuseapipelinestructuretoexecuteinstructionsinparallel,whichresultsinafasterprocessingspeed. ComparisonofRISCandCISC InstructionSetComplexity CISCprocessorshavealargeandvariedinstructionset,whichallowsthemtoperformmultipleoperationsinoneinstruction.However,thecomplexityoftheinstructionsetrequiresalongdecodingstage,whichextendstheinstructionexecutiontime.RISCprocessors,ontheotherhand,haveasmallerinstructionset,whichspeedsupthedecodingstageandreducesinstructionexecutiontime. InstructionExecution CISCprocessorscanperformawiderangeoftasksinasingleinstruction,whichreducesinstructionmemoryrequirementsandsimplifiesprogramming.RISCprocessors,ontheotherhand,requiremultipleinstructionstoperformthesametasks,whichincreasesinstructionmemoryrequirementsandcomplicatesprogramming.However,RIS