汇编语言与禅----zen of assembly language

汇编语言与禅----zen of assembly language

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时间:2018-12-27

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1、Abrash/Zen:Intro/Introduction:PushingtheEnvelopeSoyouwanttobeaPCguru?You'vesetyourselfanambitiousanddifficultgoal,withnoguaranteeofsuccess.There'snosure-firerecipeforbecomingaguru,anymorethanthere'sarecipeforbecomingachessgrandmaster.Thereis,however,onewayyoucangreat

2、lyimproveyourchances:becomeanexpertassemblylanguageprogrammer.Assemblylanguagewon'tbyitselfmakeyouaguru--butwithoutityou'llneverreachyourfullpotentialasaprogrammer.Whyisassemblylanguagesoimportantinthisageofoptimizingcompilersandprogramgenerators?Assemblylanguageisfu

3、ndamentallydifferentfromallotherlanguages,aswe'llseethroughoutTheZenofAssemblyLanguage.AssemblylanguageletsyouuseeverylastresourceofthePCtopushtheperformanceenvelope;onlyinassemblylanguagecanyoupressrightupagainsttheinherentlimitsofthePC.Ifyouaren'tpushingtheenvelope

4、,there'sgenerallynoreasontoprograminassembler.High-levellanguagesarecertainlyeasiertouse,andnowadaysmosthigh-levellanguagesletyougetatthegutsofthePC--displaymemory,DOSfunctions,interruptvectors,andsoon--withouthavingtoresorttoassembler.If,intheotherhand,you'restrivin

5、gforthesortofperformancethatwillgiveyourprogramssnappyinterfacesandcracklingresponsetimes,you'llfindassemblylanguagetobealmostmagical,fornootherlanguageevenapproachesassemblerforsheerspeed.Ofcourse,nooneteststhelimitsofthePCwiththeirfirstassemblerprogram;thattakestim

6、eandpractice.WhilemanyPCprogrammersknowsomethingaboutassembler,fewareexperts.Thetypicalprogrammerhastypedintheassemblercodefromanarticleortwo,Abrash/Zen:Intro/readabookaboutassemblerprogramming,andperhapswrittenafewassemblerprogramsofhisown--butdoesn'tyetfeelthatheha

7、smasteredthelanguage.Ifyoufallintothiscategory,you'vesurelysensedtheremarkablepotentialofassembler,butyou'realsokeenlyawareofhowharditistowritegoodassemblercodeandhowmuchyouhaveyettolearn.Inalllikelihood,you'renotsurehowtosharpenyourassemblerskillsandtakethatlastgian

8、tsteptowardmasteryofyourPC.Thisbookisforyou.WelcometothemostexcitingandesotericaspectoftheIBMPC.TheZenofAssemblyLanguagewillteachyo

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