北京理工大孽本科實驗報告實驗名稱：分支和循環實驗 課程名稱：CPU與匯編語言和選修實驗實驗時間：2017.10.24任課教師：|高|實驗地點：10-102實驗教師：|高|實驗類型：■原理驗證□綜合設計□自主創新學生姓名：xx^號/班級：xx組號：學院：信息與電子學院同組搭檔：專業：信號與信息處理成績：信息與電子學院BCHDOLOFINFfNtMAllONMDELEtinONIGl一、實驗目的1）掌握比較指令；2）理解條件轉移和無條件轉移指令的區別；3）掌握單分支、雙分支、多分支的程序設計方法;4）掌握循環程序設計方法。二、實驗內容內容一一程序代碼：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程序運行結果：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和個數正數02027負數FF123內容二實驗代碼：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程序運行結果：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苫尸二必電

[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苫尸二必電

[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所以可得有符號數的最大值為78H，無符號數的最小值12H。內容三實驗代碼：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代碼運行結果:

輸入數字5時輸出5輸入大寫字符Q時輸出CHAR輸入小寫字符q時輸出char內容四實驗代碼：DATASSEGMENTBUFDB12H,98H,0H,64H,51H,46H,62H,0H,0ACH,0AFHCOUNTEQU$-BUFA1DB0A2DB0A3DB0DATASENDSSTACKSSEGMENTSTACKSENDSCODESSEGMENTASSUMECS:CODES,DS:DATAS,SS:STACKSSTART