汇编语言——分支结构程序设计实验.doc

汇编语言实验报告实验6汇编语言分支结构程序设计学院： 计算机学院 班级： 计Y112班 姓名： 梁建辉 学号： 201100403067 2012年12月1日1. 实验目的：（1） 掌握汇编语言顺序结构设计方法（2） 熟悉常用汇编指令的用法（3） 学会用debug输入、运行小程序，并检查运行情况的方法（4） 学会在pc机上建立、汇编、连接、调试和运行80x86汇编语言程序的过程2. 实验内容：（1） 调试程序1：将存储单元DAT+1中的两个压缩的bcd码拆成2个非压缩的不承担码（高位bcd码放在DAT+1单元，地位bcd码放在DAT+2单元）。程序如下：DATASEGMENTDATDB0A5H,2DUP(?)DATAENDSCODESEGMENTASSUMECS:CODE,DS:DATASTART:MOVAX,DATAMOVDS,AXMOVAL,DATMOVBL,ALMOVCL,4SHLBL,CLMOVDAT+1,BLANDAL,0FHMOVDAT+2,ALMOVAH,4CHINT21HCODEENDSENDSTART上机运行该程序并检查运行结果是否正确。3.实验运行结果：（1）1401:0000 B80014 MOV AX,14001401:0003 8ED8 MOV DS,AX1401:0005 A00000 MOV AL,00001401:0008 8AD8 MOV BL,AL1401:000A B104 MOV CL,041401:000C D2E3 SHL BL,CL1401:000E 881E0100 MOV 0001,BL1401:0012 240F AND AL,0F1401:0014 A20200 MOV 0002,AL1401:0017 B44C MOV AH,4C1401:0019 CD21 INT 211401:001B FE8946F6 DEC BYTE PTR BX+DI+F6461401:001F EB06 JMP 0027段首地址为：1400运行前的结果：-d 1400:0,F1400:0000 A5 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 .运行后的结果：-gProgram terminated normally-d 1400:0,f1400:0000 A5 50 05 00 00 00 00 00-00 00 00 00 00 00 00 00 .P.单步运行结果：AX=1400 BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=13F0 ES=13F0 SS=1400 CS=1401 IP=0003 NV UP EI PL NZ NA PO NC1401:0003 8ED8 MOV DS,AX-tAX=1400 BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1401 IP=0005 NV UP EI PL NZ NA PO NC1401:0005 A00000 MOV AL,0000 DS:0000=A5-tAX=14A5 BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1401 IP=0008 NV UP EI PL NZ NA PO NC1401:0008 8AD8 MOV BL,AL-tAX=14A5 BX=00A5 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1401 IP=000A NV UP EI PL NZ NA PO NC1401:000A B104 MOV CL,04-tAX=14A5 BX=00A5 CX=0004 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1401 IP=000C NV UP EI PL NZ NA PO NC1401:000C D2E3 SHL BL,CL-AX=14A5 BX=0050 CX=0004 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1401 IP=000E NV UP EI PL NZ NA PE NC1401:000E 881E0100 MOV 0001,BL DS:0001=50-tAX=14A5 BX=0050 CX=0004 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1401 IP=0012 NV UP EI PL NZ NA PE NC1401:0012 240F AND AL,0F-tAX=1405 BX=0050 CX=0004 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1401 IP=0014 NV UP EI PL NZ NA PE NC1401:0014 A20200 MOV 0002,AL DS:0002=05-tAX=1405 BX=0050 CX=0004 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1401 IP=0017 NV UP EI PL NZ NA PE NC1401:0017 B44C MOV AH,4C-AX=4C05 BX=0050 CX=0004 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1401 IP=0019 NV UP EI PL NZ NA PE NC1401:0019 CD21 INT 21程序2：DATASEGMENTXDB20H;定义X为字类型并赋值20HYDW?;定义Y为字节类型DATAENDSCODESEGMENTASSUMECS:CODE,DS:DATASTART:MOVAX,DATAMOVDS,AXMOVAL,X;把X的值转移到ALXORAH,AH;清零AHSHLAX,1;将目的操作数向左移动1位MOVBX,AXMOVCL,2;移位大于1，需用CLSHLAX,CL;将目的操作数向左移动2位ADDAX,BX;把AX与BX中的值相加MOVY,AXMOVAH,4CH;返回DOS状态下INT21HCODEENDSENDSTART运行结果：1401:0000 B80014 MOV AX,14001401:0003 8ED8 MOV DS,AX1401:0005 A00000 MOV AL,00001401:0008 32E4 XOR AH,AH1401:000A D1E0 SHL AX,11401:000C 8BD8 MOV BX,AX1401:000E B102 MOV CL,021401:0010 D3E0 SHL AX,CL1401:0012 03C3 ADD AX,BX1401:0014 A30100 MOV 0001,AX1401:0017 B44C MOV AH,4C1401:0019 CD21 INT 211401:001B FE8946F6 DEC BYTE PTR BX+DI+F6461401:001F EB06 JMP 0027-首地址：1400运行前结果：-d 1400:0,f1400:0000 20 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 .-t运行后结果：Program terminated normally-d 1400:0,f1400:0000 20 40 01 00 00 00 00 00-00 00 00 00 00 00 00 00 .单步调试：-tAX=-tAX=-tAX=1400 BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=13EB ES=13EB SS=1400 CS=13FC IP=0003 NV UP EI PL NZ NA PO NC13FC:0003 8ED8 MOV DS,AX-tAX=1400 BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13EB SS=1400 CS=13FC IP=0005 NV UP EI PL NZ NA PO NC13FC:0005 A00000 MOV AL,0000 DS:0000=20-tAX=1320 BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13EB SS=1400 CS=13FC IP=0008 NV UP EI PL NZ NA PO NC13FC:0008 32E4 XOR AH,AH-tAX=0020 BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13EB SS=1400 CS=13FC IP=000A NV UP EI PL ZR NA PE NC13FC:000A D1E0 SHL AX,1-g BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=13EB ES=13EB SS=1400 CS=13FC IP=0003 NV UP EI PL NZ NA PO NC13FC:0003 8ED8 MOV DS,AX-tAX=1400 BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13EB SS=1400 CS=13FC IP=0005 NV UP EI PL NZ NA PO NC13FC:0005 A00000 MOV AL,0000 DS:0000=20-tAX=1320 BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13EB SS=1400 CS=13FC IP=0008 NV UP EI PL NZ NA PO NC13FC:0008 32E4 XOR AH,AH-tAX=0020 BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13EB SS=1400 CS=13FC IP=000A NV UP EI PL ZR NA PE NC13FC:000A D1E0 SHL AX,1-g BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=13EB ES=13EB SS=1400 CS=13FC IP=0003 NV UP EI PL NZ NA PO NC13FC:0003 8ED8 MOV DS,AX-tAX=13FB BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13EB SS=13FB CS=13FC IP=0005 NV UP EI PL NZ NA PO NC13FC:0005 A00000 MOV AL,0000 DS:0000=20-tAX=1320 BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13EB SS=1400 CS=13FC IP=0008 NV UP EI PL NZ NA PO NC13FC:0008 32E4 XOR AH,AH-tAX=0020 BX=0000 CX=002B DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13EB SS=1400 CS=13FC IP=000A NV UP EI PL ZR NA PE NC13FC:000A D1E0 SHL AX,1-g程序3：DATA SEGMENT ORG 1000H BIN DB ? HEX DB 6Bh ORG 1030H DB 00H, 01H,02H,03H,04H,05H,06H,07H,08H,09H ORG 1040H DB 0AH,0BH,0CH,0DH,0EH,0FHDATA ENDSCODE SEGMENTASSUMECS:CODE,DS:DATASTART: MOV AX,DATA MOV DS,AX MOV AL,HEX MOV BX,OFFSET BIN SUB AH,AH ADD BX,AX MOV DL,BX MOV CL,4 SHL DL,CL MOV AL,HEX+1 MOV BX,OFFSET BIN XOR AH,AH ADD BX,AX MOV Ax,BX OR Al,DL MOV BIN,AL MOV AH,4CH INT 21HCODE ENDS ENDSTART运行结果：1505:0000 B80014 MOV AX,14001505:0003 8ED8 MOV DS,AX1505:0005 A00110 MOV AL,10011505:0008 BB0010 MOV BX,10001505:000B 2AE4 SUB AH,AH1505:000D 03D8 ADD BX,AX1505:000F 8A17 MOV DL,BX1505:0011 B104 MOV CL,041505:0013 D2E2 SHL DL,CL1505:0015 A00210 MOV AL,10021505:0018 BB0010 MOV BX,10001505:001B 32E4 XOR AH,AH1505:001D 03D8 ADD BX,AX1505:001F 8BC3 MOV AX,BX首地址：1400-运行前结果： -d 1400:0,f1400:0000 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 .-运行后结果：-d 1400:0,f1400:0000 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 .单步调试：AX=1400 BX=0000 CX=107A DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=13F0 ES=13F0 SS=1400 CS=1505 IP=0003 NV UP EI PL NZ NA PO NC1505:0003 8ED8 MOV DS,AX-TAX=1400 BX=0000 CX=107A DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1505 IP=0005 NV UP EI PL NZ NA PO NC1505:0005 A00110 MOV AL,1001 DS:1001=6B-TAX=146B BX=0000 CX=107A DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1505 IP=0008 NV UP EI PL NZ NA PO NC1505:0008 BB0010 MOV BX,1000-TAX=146B BX=1000 CX=107A DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1505 IP=000B NV UP EI PL NZ NA PO NC1505:000B 2AE4 SUB AH,AH-TAX=006B BX=1000 CX=107A DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1505 IP=000D NV UP EI PL ZR NA PE NC1505:000D 03D8 ADD BX,AX-AX=006B BX=106B CX=107A DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1505 IP=000F NV UP EI PL NZ NA PO NC1505:000F 8A17 MOV DL,BX DS:106B=32-tAX=006B BX=106B CX=107A DX=0032 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1505 IP=0011 NV UP EI PL NZ NA PO NC1505:0011 B104 MOV CL,04-tAX=006B BX=106B CX=1004 DX=0032 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1505 IP=0013 NV UP EI PL NZ NA PO NC1505:0013 D2E2 SHL DL,CL-tAX=006B BX=106B CX=1004 DX=0020 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1505 IP=0015 NV UP EI PL NZ NA PO CY1505:0015 A00210 MOV AL,1002 DS:1002=00-tAX=0000 BX=106B CX=1004 DX=0020 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1505 IP=0018 NV UP EI PL NZ NA PO CY1505:0018 BB0010 MOV BX,1000-AX=0000 BX=1000 CX=1004 DX=0020 SP=0000 BP=0000 SI=0000 DI=0000DS=1400 ES=13F0 SS=1400 CS=1505 IP=001B NV UP EI PL NZ NA PO CY1505:001B 32E4 XOR AH,AH-tAX=0000 BX=1000