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主题 : : 第八章 实验问题 请高手指点 [待解决] |
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[帖 主]
[ 发表时间：2008-09-05 14:18 ]
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注册日期：2008-08-21 13:29 |
assume cs:table,ds:data,ss:stack
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 345980,590827,80530,1183000,1843000,2759000,3753000,4649000,5937000
dw 3,7,9,13,28,38,130,220,476,778,1001,1442,2258,2793,4037,5635,8226
dw 11542,14430,15257,17800
data ends
stack segment
db 336 dup ('0')
stack ends
table segment
start:
mov ax,data
mov ds,ax
mov ax,stack
mov ss,ax
mov bx,16
mov si,0
mov cx,21
mov di,0
s:
mov sp,bx
mov ax,ds:[si+84]
mov dx,ds:[si+84+2]
div word ptr ds:[di+168]
push ax
sub sp,1
push ds:[di+168]
sub sp,1
push ds:[si+84+2]
push ds:[si+84]
；--------------------------出错开始
sub sp,1
push ds:[si+2]
push ds:[si]
；--------------------------出错结束
sub sp,1
add bx,16
add si,4
add di,2
loop s
mov ax,4c00h
int 21h
table ends
end start
这个程序运行到上面个那个代码处时会出错，原来程序SP初始化值为150h不会出错，但是因为输出结果变反了所以就动态的改变SP的值为了让他变成正序
不知道错在哪里请高手教一下，谢谢！ | | |
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[第1楼]
[ 回复时间：2008-09-05 16:26 ]
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荣誉值：0
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注册日期：2008-08-21 13:29 |
assume cs:table,ds:data,ss:stack
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 345980,590827,80530,1183000,1843000,2759000,3753000,4649000,5937000
dw 3,7,9,13,28,38,130,220,476,778,1001,1442,2258,2793,4037,5635,8226
dw 11542,14430,15257,17800
data ends
stack segment
db 336 dup ('0')
stack ends
table segment
start:
mov ax,data
mov ds,ax
mov ax,stack
mov ss,ax
mov sp,150h
mov si,0
mov cx,21
mov di,0
s:
mov ax,ds:[si+84]
mov dx,ds:[si+84+2]
div word ptr ds:[di+168]
push ax
sub sp,1
push ds:[di+168]
sub sp,1
push ds:[si+84+2]
push ds:[si+84]
sub sp,1
push ds:[si+2]
push ds:[si]
sub sp,1
add si,4
add di,2
loop s
mov ax,4c00h
int 21h
table ends
end start
同样是操作sp-1一个有错一个没错是为什么 | | |
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