实验七的两个问题
问题一代码如下: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'
; 以上表示21年的21个字符串
dd 16,22,382,1356,2390,8000,16000,24486,50065,97479,140417,197514
dd 345980,590827,803530,1183000,1843000,2759000,375300,4649000,5937000
; 以上是表示21年公司总收入的21个dword型数据
dw 3,7,9,13,28,38,130,220,476,778,1001,1442,2258,2793,4037,5635,8226
dw 11542,14430,15257,17800
; 以上是表示21年公司雇员人数的21个word型数据
data ends
table segment
db 21 dup ('year summ ne ?? ')
table ends
codesg segment
start:
mov ax,data
mov ds,ax
mov ax,table
;年份
mov bx,0h
mov bp,0h
mov cx,21
s0: mov dx,cx
mov si,0
mov cx,2
s1: mov ax,ds:
mov es:,ax
add si,2
loop s1
add bx,16
add bp,4
mov cx,dx
loop s0
;收入
mov bx,0h
mov bp,0h
mov cx,21
s2: mov dx,cx
mov si,0
mov cx,2
s3: mov ax,ds:
mov es:,ax
add si,2
mov ax,ds:
mov es:,ax
add si,2
loop s3
add bx,16
add bp,4
mov cx,dx
loop s2
;人数
mov bx,0h
mov cx,21
s4: mov ax,ds:
mov es:,ax
add si,2
add bx,16
loop s4
;平均收入
mov di,0
mov cx,21
s5:mov ax,es:
mov dx,es:
div word ptr es:
mov es:,ax
add di,16
loop s5
mov ax,4c00h
int 21h
codesg ends
end start
当debug到红色字体时出现这样情况:http://img01.taobaocdn.com/imgextra/i1/546539435/T2itGeXihbXXXXXXXX_!!546539435.jpg
问题二:我一开始加了栈段,当debug到下面红色字体时自动退出了,请各位大大帮忙讲解下这2个问题,我看了很久都觉得思路没错啊。代码如下:
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'
; 以上表示21年的21个字符串
dd 16,22,382,1356,2390,8000,16000,24486,50065,97479,140417,197514
dd 345980,590827,803530,1183000,1843000,2759000,375300,4649000,5937000
; 以上是表示21年公司总收入的21个dword型数据
dw 3,7,9,13,28,38,130,220,476,778,1001,1442,2258,2793,4037,5635,8226
dw 11542,14430,15257,17800
; 以上是表示21年公司雇员人数的21个word型数据
data ends
table segment
db 21 dup ('year summ ne ?? ')
table ends
stack segment
dw 0
stack ends
codesg segment
start:
mov ax,data
mov ds,ax
mov ax,table
mov ax,stack
mov ss,ax
mov sp,2
;年份
mov bx,0h
mov bp,0h
mov cx,21
s0: push cx
mov si,0
mov cx,2
s1: mov ax,ds:
mov es:,ax
add si,2
loop s1
add bx,16
add bp,4
pop cx
loop s0
;收入
mov bx,0h
mov bp,0h
mov cx,21
s2: push cx
mov si,0
mov cx,2
s3: mov ax,ds:
mov es:,ax
add si,2
mov ax,ds:
mov es:,ax
add si,2
loop s3
add bx,16
add bp,4
pop cx
loop s2
;人数
mov bx,0h
mov cx,21
s4: mov ax,ds:
mov es:,ax
add si,2
add bx,16
loop s4
;平均收入
mov di,0
mov cx,21
s5:mov ax,es:
mov dx,es:
div word ptr es:
mov es:,ax
add di,16
loop s5
mov ax,4c00h
int 21h
codesg ends
end start
麻烦各位大大帮忙小虾我{:5_100:}
你上面代码没有设置ES : 加上mov es,ax,我编译运行过了,就是这个问题,一步错全盘错,以后小心。 mov sp,2 ,为什么设置为2?
assume cs:codesg,ds:data,es:table
data segment
db '1975','1976','1977','1978','1979','1980','1978','1978','1978'
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 345980,590827,803530,1183000,1843000,2759000,3753000,4649000,5937000
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
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,
mov es:,al
mov al,
mov es:,al
mov al,
mov es:,al
mov al,
mov es:,al
mov al,32; 十进制的32对应的ASCII码正好是空格
mov es:,al
mov ax,
mov dx,
mov es:,ax
mov es:,dx
mov al,32
mov es:,al
mov ax,
mov es:,ax
mov al,32
mov es:,al
mov ax,es:
mov dx,es:
div word ptr es:
mov es:,ax
mov al,32
mov es:,al
add bx,4
add si,2
add di,16
loop s
mov ax,4c00h
int 21h
codesg ends
end start
试试这个 ztc123 发表于 2012-4-21 00:59 static/image/common/back.gif
mov sp,2 ,为什么设置为2?
因为我前面栈段设置了dw 0,所以sp要指向偏移地址2啊 梦想与现实 发表于 2012-4-21 08:32 static/image/common/back.gif
assume cs:codesg,ds:data,es:table
data segment
db '1975','1976','1977','1978','1979','1980','197 ...
这个跟小甲鱼老师的很像,我觉得是优化了,但我想弄明白我上面的代码到底为什么会出现错误呢?{:5_100:} 哦对了,还有设置 SP 要大点,我把你代码mov sp,16 assume ,cs:code,ds:data,es:table
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 345980,590827,803530,1183000,1843000,2759000,3753000,4649000,5937000
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
table segment
db 21 dup ('year summ ne ?? ')
table ends
code 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
;年份
s: mov al,
mov es:,al
mov al,
mov es:,al
mov al,
mov es:,al
mov al,
mov es:,al
;收入
mov ax,54h
mov dx,56h
mov es:5h,ax
mov es:7h,dx
add bx,4
add di,16
loop s
;雇员
mov bx,0
mov si,0
mov di,0
mov cx,21
s1: mov ax,0a8h
mov es:0ah,ax
;平均
mov ax,54h
mov dx,56h
div word ptr ds:0a8h
mov es:0dh,ax
add si,2
add di,16
loop s1
mov ax,4c00h
int 21h
code ends
end start
这个代码也是同样的问题,谁能给个合理的解释~~
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