北京理工大学汇编试验报告试验四

北京理工大孽本科实验报告实验名称：分支和循环实验 课程名称：CPU与汇编语言和选修实验实验时间：2017.10.24任课教师：|高|实验地点：10-102实验教师：|高|实验类型：■原理验证□综合设计□自主创新学生姓名：xx^号/班级：xx组号：学院：信息与电子学院同组搭档：专业：信号与信息处理成绩：信息与电子学院BCHDOLOFINFfNtMAllONMDELEtinONIGl一、实验目的1）掌握比较指令；2）理解条件转移和无条件转移指令的区别；3）掌握单分支、双分支、多分支的程序设计方法;4）掌握循环程序设计方法。二、实验内容内容一一程序代码：DATASSEGMENTBUFDB12H,98H,45H,64H,78H,36H,55H,44H,0ABH,0CFHCOUNTEQU$-BUFNUM1DB0NUM2DB0BUF1DB00,00BUF2DB00,00DATASENDSSTACKSSEGMENTSTACKSENDSCODESSEGMENTASSUMECS:CODES,DS:DATAS,SS:STACKSSTART:MOVAX,DATASMOVDS,AXMOVCX,COUNTMOVSI,0MOVDI,0MOVAL,BUF[SI]CMPAL,0JGL1INCNUM2CBWADCWORDPTRBUF2[DI],AX

JMPL2INCNUM1CBWADCWORDPTRBUF1[DI],AXL2:INCSILOOPLMOVAH,4CHINT21HCODESENDSENDSTART程序运行结果：DOSBox0.74,Cpuspeed:3000cyclesFrameskip0,ProgramDEBUGAX=FFCFBX=0G00CX=O061DX=0O06DS-G770ES-0760SS-076FC5-G771AX=FFCFBX=0G00CX=O061DX=0O06DS-G770ES-0760SS-076FC5-G7710771：Q02A46 INCSI3F=0000BP=00O951=0009BI=O0G0[F-0OEANUUFEINGhZACFECY自工=FFCFBX=0O0tiDS-G770ES-07600771：OOZEE2E1-tCX=tiCifc)lSS-076FCS-OT71LOOPSP=OOtiti

IP-OGSB0GOEBltWOti31=0t«H"=0000

MUUPEIPLHZMhPECYriX=rFCFDX=0GO00?71：0OeEB44C-dds：03770：0O0GIE58O77G：Q01GB870O?7G：00gG0000G?7G：0O3G©9FE0770；0046Z100G?7G：Q05G0000G77G：006G00000?7G：0O?G自工=FFCFBX=0O0tiDS-G770ES-07600771：OOZEE2E1-tCX=tiCifc)lSS-076FCS-OT71LOOPSP=OOtiti

IP-OGSB0GOEBltWOti31=0t«H"=0000

MUUPEIPLHZMhPECYriX=rFCFDX=0GO00?71：0OeEB44C-dds：03770：0O0GIE58O77G：Q01GB870O?7G：00gG0000G?7G：0O3G©9FE0770；0046Z100G?7G：Q05G0000G77G：006G00000?7G：0O?G00GOCX=O0GODX=00OOSr=0O00SS=A?FTCS=R?71[P=Qfi如MOUAH,4cDP=O0O3SI=0O0fi»I=O0OO

NUIIPETPLHZNAPECY78E87Fe0e0GOG)0e036B90B9800(DO0000崎-BE06-0B85-0C06-09OG-Q000-090G-000700如460090000003GEGE1ZFF..Edj^UDBF0000GA34p 11850E00EB. EZElB44CCD 0000090000? 0000GOQQ90 0000000090 0000000090 L和个数正数02027负数FF123内容二实验代码：DATASSEGMENTBUFDB12H,98H,45H,64H,78H,36H,55H,44H,0ABH,0CFHCOUNTEQU$-BUFMAXDB0MINDB0DATASENDSSTACKSSEGMENTSTACKSENDSCODESSEGMENTASSUMECS:CODES,DS:DATAS,SS:STACKSSTART:MOVAX,DATASMOVDS,AXMOVCX,COUNTMOVSI,0MOVAL,BUF[SI]MOVMAX,ALINCSIMOVAL,BUF[SI]CMPAL,MAXJLL1MOVMAX,ALDECCXJNZLMOVCX,COUNTMOVSI,0MOVAL,BUF[SI]MOVMIN,ALM:INCSIMOVAL,BUF[SI]CMPAL,MINJAM1MOVMIN,ALM1:DECCX

JNZMMOVAH,4CHINT21HCODESENDSENDSTART程序运行结果：r IX)SBom0.74,Cpuspeed:3000cycles,Frameskiip0,ProgramDEBUGAX=G778BX=0G00CX=O0G1DX=0OOGD3-G770E3-0f76033-076FC5-e771AX=G778BX=0G00CX=O0G1DX=0OOGD3-G770E3-0f76033-076FC5-e771G771：Q03E49 DECCXSP=0000BP=O000SI=0OGABI=O0O0IF-003EMUUFEIFLMZNAFENCDS-G770ES-O7600?71：0O3F75EF—tSS-076FCS-OT71JMZ苫尸二必电

[P-003F0G30bF=tWOW3I=OtWABl=tWtW

NUUPEIPLZRNhPENCfiX=G7?0BX=0G00DS=E77fiES=fif76@0771:0041B44c-dds：00770:00061Z38G77G：Q01GB870G?7G：0OeGQA00O?7G：00(3G49750770:0046468AG?7G：005GEFB40?7G：0O6G00GOG?7G：0O?G0000DS-G770ES-O7600?71：0O3F75EF—tSS-076FCS-OT71JMZ苫尸二必电

[P-003F0G30bF=tWOW3I=OtWABl=tWtW

NUUPEIPLZRNhPENCfiX=G7?0BX=0G00DS=E77fiES=fif76@0771:0041B44c-dds：00770:00061Z38G77G：Q01GB870G?7G：0OeGQA00O?7G：00(3G49750770:0046468AG?7G：005GEFB40?7G：0O6G00GOG?7G：0O?G0000CX=O0O0DX=000G3P=0090SS=fl?EFCS=H?71[P=MM1MOUAH,4CDr=O00O3I=0GGh»I=O000

NUIIPFTPLZRNAPENC4E<rcnl9D©06B8B&C&&In)?16F4CIGIG404E84&&55a00BEG6G&000044-AB00-BE3A-060G-0OOE-0OOG-O00G-0000-09LZ008A847C000000AZOEGOGO00000000所以可得有符号数的最大值为78H，无符号数的最小值12H。内容三实验代码：DATASSEGMENTBUF1DB'CHAR',0DH,0AH,'$'BUF2DB'char',0DH,0AH,'$'DATASENDSSTACKSSEGMENTSTACKSENDSCODESSEGMENTASSUMECS:CODES,DS:DATAS,SS:STACKSSTART:MOVAX,DATASMOVDS,AXMOVAH,1HINT21HCMPAL,39HJLEL1CMPAL,5AHJLEL2LEADX,BUF2MOVAH,09HINT21HJMPLL1:MOVDL,ALMOVAH,2INT21HJMPLL2:LEADX,BUF1MOVAH,09HINT21HJMPLL:MOVAH,4CHINT21HCODESENDSENDSTART代码运行结果:

输入数字5时输出5输入大写字符Q时输出CHAR输入小写字符q时输出char内容四实验代码：DATASSEGMENTBUFDB12H,98H,0H,64H,51H,46H,62H,0H,0ACH,0AFHCOUNTEQU$-BUFA1DB0A2DB0A3DB0DATASENDSSTACKSSEGMENTSTACKSENDSCODESSEGMENTASSUMECS:CODES,DS:DATAS,SS:STACKSSTART