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主题 : : 问题7.9,求人指点 [已解决] |
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[帖 主]
[ 发表时间:2010-07-17 21:15 ]
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ASSUME CS:CODESG,SS:STACKSG,DS:DATASG
STACKSG SEGMENT
DW 0,0,0,0,0,0,0,0
STACKSG ENDS
DATASG SEGMENT
DB '1. display '
DB '2. brows '
DB '3. replace '
DB '4. modify '
DATASG ENDS
CODESG SEGMENT
START: MOV AX,STACKSG
MOV SS,AX
MOV SP,10H
MOV AX,DATASG
MOV DS,AX
MOV BX,0
MOV CX,4
MOV SI,0
PUSH CX
S0: MOV CX,4
S: MOV AL,[BX+SI+3]
AND AL,11011111B
MOV [BX+SI+3],AL
INC BX
LOOP S
MOV BX,0
ADD SI,10H
POP CX
LOOP S0
MOV AX,4C00H
INT 21H
CODESG ENDS
END START
问题7.9,居然是个死循环,谁帮我分析下? | | |
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[第1楼]
[ 回复时间:2010-07-17 21:22 ]
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注册日期:2009-07-05 19:26 |
S0: MOV CX,4
S: MOV AL,[BX+SI+3]
AND AL,11011111B
MOV [BX+SI+3],AL
INC BX
LOOP S
MOV BX,0
ADD SI,10H
POP CX
LOOP S0
CX反复赋值4,怎么跳出来 | | |
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[第2楼]
[ 回复时间:2010-07-17 21:29 ]
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注册日期:2010-07-02 05:46 |
找着毛病了。
ASSUME CS:CODESG,SS:STACKSG,DS:DATASG
STACKSG SEGMENT
DW 0,0,0,0,0,0,0,0
STACKSG ENDS
DATASG SEGMENT
DB '1. display '
DB '2. brows '
DB '3. replace '
DB '4. modify '
DATASG ENDS
CODESG SEGMENT
START: MOV AX,STACKSG
MOV SS,AX
MOV SP,10H
MOV AX,DATASG
MOV DS,AX
MOV BX,0
MOV CX,4
MOV SI,0
S0: PUSH CX
MOV CX,4
S: MOV AL,[BX+SI+3]
AND AL,11011111B
MOV [BX+SI+3],AL
INC BX
LOOP S
MOV BX,0
ADD SI,10H
POP CX
LOOP S0
MOV AX,4C00H
INT 21H
CODESG ENDS
END START | | |
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[第3楼]
[ 回复时间:2010-07-18 08:47 ]
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注册日期:2010-07-02 05:46 |
此贴由 贴主 于 [ 2010-07-18 08:47 ] 结贴。 结贴原因:问题已解决 | | |
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