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主题 : : 实验7,麻烦看下 [待解决] |
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[帖 主]
[ 发表时间:2009-04-02 21:43 ]
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注册日期:2009-01-06 21:37 |
debug看到的东西是一塌糊涂...
我就那个愁...不知道对否 脑子转不来弯
assume cs:codesg
data segment
db '1975','1976','1977','1978','1979','1980','1981','1982','1983'
db '1984','1985','1986','1987','1988','1989','1990','1991','1992'
db '1993','1994','1995'
dd 16,22,382,1356,2390,8000,16000,24486,50065,97479,140417,197514
dd 245980,590827,803530,1183000,1843000,2759000,3753000,4649000,5937000
dw 3,7,9,13,28,38,130,220,476,778,1001,1442,2258,2793,4037,5635,8228
dw 11542,14430,15257,17800
data ends
table segment
db 21 dup ('year summ ne ?? ')
table ends
codesg segment
start:
mov ax,data
mov ds,ax
mov ax,table
mov es,ax
mov bx,0
mov si,0
mov di,0
mov cx,21
s:mov al,[si]
mov es:[bx],al
mov al,[si+1]
mov es:[bx+1],al
mov al,[si+2]
mov es:[bx+2],al
mov al,[si+3]
mov es:[bx+3],al
mov ax,[si+42]
mov es:[bx+5],ax
mov ax,[si+44]
mov es:[bx+7],ax
mov ax,[si+84]
mov es:[bx+10],ax
mov dx,es:[bx+5]
mov ax,es:[bx+7]
div word ptr es:[bx+10]
mov es:[bx+13],ax
loop s
mov ax,4c00h
int 21h
codesg ends
end start
麻烦大哥们把不对的地方指下 感激不尽`` | | |
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[第1楼]
[ 回复时间:2009-04-05 10:32 ]
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注册日期:2009-03-30 10:28 |
dw定义的收入的偏移地址不对,第一个不是42,是84,dd最开始定义的是字符每个年份占4个字节 | | |
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[第2楼]
[ 回复时间:2009-04-09 13:26 ]
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assume cs:codesg
data segment
db '1975','1976','1977','1978','1979','1980','1981','1982','1983'
db '1984','1985','1986','1987','1988','1989','1990','1991','1992'
db '1993','1994','1995'
dd 16,22,382,1356,2390,8000,16000,24486,50065,97479,140417,197514
dd 245980,590827,803530,1183000,1843000,2759000,3753000,4649000,5937000
dw 3,7,9,13,28,38,130,220,476,778,1001,1442,2258,2793,4037,5635,8228
dw 11542,14430,15257,17800
data ends
table segment
db 21 dup ('year summ ne ?? ')
table ends
codesg segment
start:
mov ax,data
mov ds,ax
mov ax,table
mov es,ax
mov bx,0
mov si,0
mov di,0
mov cx,21
s:mov al,[si]
mov es:[bx],al
mov al,[si+1]
mov es:[bx+1],al
mov al,[si+2]
mov es:[bx+2],al
mov al,[si+3]
mov es:[bx+3],al
mov ax,[si+84]
mov es:[bx+5],ax
mov ax,[si+86]
mov es:[bx+7],ax
mov ax,[si+168]
mov es:[bx+10],ax
mov dx,es:[bx+5]
mov ax,es:[bx+7]
div word ptr es:[bx+10]
mov es:[bx+13],ax
add bx,16
loop s
mov ax,4c00h
int 21h
codesg ends
end start
改后的。。。。可又出现‘Divide overflow’
我纠结了。。。 | | |
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[第3楼]
[ 回复时间:2009-04-12 02:56 ]
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注册日期:2009-04-11 03:39 |
mov dx,es:[bx+5]
mov ax,es:[bx+7]
div word ptr es:[bx+10]
dx放高位,ax放低位
你这里正好放反了
在平常环境中,数字存放是低位在前的(这个貌似还涉及到大端小端问题...)
比如012345678h,在内存中存放顺序是:
0 1 2 3
78h 56h 34h 12h | | |
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[第4楼]
[ 回复时间:2009-04-12 22:42 ]
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注册日期:2009-01-06 21:37 |
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