8.6寻址方式的综合运用

assume cs:codesg,ds:datasgdatasg segment db 'dec' db 'ken oslen' dw 137 dw 40 db 'pdp' datasg endscodesg segment start: mov ax,datasg mov ds,ax ;modify the grade to 38 mov bx,0ch mov word ptr ds:[bx],38 ;modify the lirun to 110 mov bx,0eh add word ptr ds:[bx],70 ;modify the important product's name to 'VAX' mov bx,10h mov si,0h mov byte ptr ds:[bx][si],'V' inc si mov byte ptr ds:[bx][si],'A' inc si mov byte ptr ds:[bx][si],'X' mov byte ptr ds:[0],'s' mov ax,4c00h int 21h codesg endsend start

调试过程：

-rAX=0000 BX=0000 CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000 DS=143C ES=143C SS=144C CS=144E IP=0000 NV UP EI PL NZ NA PO NC 144E:0000 B84C14 MOVAX,144C -u144E:0000 B84C14 MOVAX,144C 144E:0003 8ED8 MOVDS,AX 144E:0005 BB0C00 MOVBX,000C 144E:0008 C7072600 MOVWORD PTR [BX],0026 144E:000C BB0E00 MOVBX,000E 144E:000F 830746 ADDWORD PTR [BX],+46 144E:0012 BB1000 MOVBX,0010 144E:0015 BE0000 MOVSI,0000 144E:0018 C60056 MOVBYTE PTR [BX+SI],56 144E:001B 46 INCSI 144E:001C C60041 MOVBYTE PTR [BX+SI],41 144E:001F 46 INCSI -tAX=144C BX=0000 CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000 DS=143C ES=143C SS=144C CS=144E IP=0003 NV UP EI PL NZ NA PO NC 144E:0003 8ED8 MOVDS,AX -tAX=144C BX=0000 CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000 DS=144C ES=143C SS=144C CS=144E IP=0005 NV UP EI PL NZ NA PO NC 144E:0005 BB0C00 MOVBX,000C -tAX=144C BX=000C CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000 DS=144C ES=143C SS=144C CS=144E IP=0008 NV UP EI PL NZ NA PO NC 144E:0008 C7072600 MOVWORD PTR [BX],0026 DS:000C=0089-tAX=144C BX=000C CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000 DS=144C ES=143C SS=144C CS=144E IP=000C NV UP EI PL NZ NA PO NC 144E:000C BB0E00 MOVBX,000E -dds:0144C:0000 64 65 63 6B 65 6E 20 6F-73 6C 65 6E 26 00 28 00 decken oslen&.(.144C:0010 70 64 70 00 00 00 00 00-00 00 00 00 00 00 00 00 pdp.............144C:0020 B8 4C 14 8E D8 BB 0C 00-C7 07 26 00 BB 0E 00 83 .L........&.....144C:0030 07 46 BB 10 00 BE 00 00-C6 00 56 46 C6 00 41 46 .F........VF..AF144C:0040 C6 00 58 C6 06 00 00 73-B8 00 4C CD 21 06 C4 5E ..X....s..L.!..^144C:0050 F8 26 8B 47 06 26 8B 57-08 89 46 FC 89 56 FE C4 .&.G.&.W..F..V..144C:0060 5E FC 26 80 7F 04 00 75-03 E9 84 00 26 8B 07 26 ^.&....u....&..&144C:0070 8B 57 02 89 46 F4 89 56-F6 8A 46 08 26 38 47 04 .W..F..V..F.&8G.-pAX=144C BX=000E CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000 DS=144C ES=143C SS=144C CS=144E IP=000F NV UP EI PL NZ NA PO NC 144E:000F 830746 ADDWORD PTR [BX],+46 DS:000E=0028-pAX=144C BX=000E CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000 DS=144C ES=143C SS=144C CS=144E IP=0012 NV UP EI PL NZ NA PO NC 144E:0012 BB1000 MOVBX,0010 -pAX=144C BX=0010 CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000 DS=144C ES=143C SS=144C CS=144E IP=0015 NV UP EI PL NZ NA PO NC 144E:0015 BE0000 MOVSI,0000 -pAX=144C BX=0010 CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000 DS=144C ES=143C SS=144C CS=144E IP=0018 NV UP EI PL NZ NA PO NC 144E:0018 C60056 MOVBYTE PTR [BX+SI],56 DS:0010=70-pAX=144C BX=0010 CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000 DS=144C ES=143C SS=144C CS=144E IP=001B NV UP EI PL NZ NA PO NC 144E:001B 46 INCSI -pAX=144C BX=0010 CX=004D DX=0000 SP=0000 BP=0000 SI=0001 DI=0000 DS=144C ES=143C SS=144C CS=144E IP=001C NV UP EI PL NZ NA PO NC 144E:001C C60041 MOVBYTE PTR [BX+SI],41 DS:0011=64-pAX=144C BX=0010 CX=004D DX=0000 SP=0000 BP=0000 SI=0001 DI=0000 DS=144C ES=143C SS=144C CS=144E IP=001F NV UP EI PL NZ NA PO NC 144E:001F 46 INCSI -pAX=144C BX=0010 CX=004D DX=0000 SP=0000 BP=0000 SI=0002 DI=0000 DS=144C ES=143C SS=144C CS=144E IP=0020 NV UP EI PL NZ NA PO NC 144E:0020 C60058 MOVBYTE PTR [BX+SI],58 DS:0012=70-pAX=144C BX=0010 CX=004D DX=0000 SP=0000 BP=0000 SI=0002 DI=0000 DS=144C ES=143C SS=144C CS=144E IP=0023 NV UP EI PL NZ NA PO NC 144E:0023 C606000073 MOVBYTE PTR [0000],73 DS:0000=64-pAX=144C BX=0010 CX=004D DX=0000 SP=0000 BP=0000 SI=0002 DI=0000 DS=144C ES=143C SS=144C CS=144E IP=0028 NV UP EI PL NZ NA PO NC 144E:0028 B8004C MOVAX,4C00 -pAX=4C00 BX=0010 CX=004D DX=0000 SP=0000 BP=0000 SI=0002 DI=0000 DS=144C ES=143C SS=144C CS=144E IP=002B NV UP EI PL NZ NA PO NC 144E:002B CD21 INT21 -d ds:0144C:0000 73 65 63 6B 65 6E 20 6F-73 6C 65 6E 26 00 6E 00 secken oslen&.n.144C:0010 56 41 58 00 00 00 00 00-00 00 00 00 00 00 00 00 VAX.............144C:0020 B8 4C 14 8E D8 BB 0C 00-C7 07 26 00 BB 0E 00 83 .L........&.....144C:0030 07 46 BB 10 00 BE 00 00-C6 00 56 46 C6 00 41 46 .F........VF..AF144C:0040 C6 00 58 C6 06 00 00 73-B8 00 4C CD 21 06 C4 5E ..X....s..L.!..^144C:0050 F8 26 8B 47 06 26 8B 57-08 89 46 FC 89 56 FE C4 .&.G.&.W..F..V..144C:0060 5E FC 26 80 7F 04 00 75-03 E9 84 00 26 8B 07 26 ^.&....u....&..&144C:0070 8B 57 02 89 46 F4 89 56-F6 8A 46 08 26 38 47 04 .W..F..V..F.&8G.-pProgram terminated normally-p