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主题 : : 第九章实验,为什么只能显示两行,第一行和最后一行????哪位高手帮我找找错。 [待解决] |
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[帖 主]
[ 发表时间:2009-05-02 13:33 ]
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注册日期:2009-04-02 14:10 |
assume cs:code,es:table,ss:stack
table segment
db 'welcome to masm!'
db 02h,24h,71h
table ends
stack segment
dw 30 dup (0)
stack ends
code segment
start: mov ax,table
mov es,ax
mov ax,0b800h
mov ds,ax
mov ax,stack
mov ss,ax
mov sp,60
mov di,16
mov bx,7beh
mov cx,3
p: mov dx,cx
mov si,15
mov cx,16
s: mov al,es:[si]
mov ah,es:[di]
push ax
dec si
loop s
mov cx,16
s0: pop ds:[bx]
add bx,2
loop s0
mov bx,7beh
add bx,160
add di,1
mov cx,dx
loop p
mov ax,4c00h
int 21h
code ends
end start | | |
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[第1楼]
[ 回复时间:2009-05-02 21:12 ]
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assume cs:code,es:table
table segment
db 'welcome to masm!'
db 02h,24h,71h
table ends
code segment
start: mov ax,table
mov es,ax
mov ax,0b800h
mov ds,ax
mov bp,0
mov bx,71eh
mov cx,3
s: mov dx,cx
mov si,0
mov di,0
mov cx,16
p: mov al,es:[si]
mov ds:[bx+di],al
mov ah,es:[bp+16]
mov ds:[bx+di+1],ah
add si,1
add di,2
loop p
mov cx,dx
add bx,160
add bp,1
loop s
mov ax,4c00h
int 21h
code ends
end start
就这种方法可实现。但是第一种方法为什么只显示两行。 | | |
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[第2楼]
[ 回复时间:2009-05-04 13:47 ]
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方法三:但是第一种方始终搞不明白错出在哪?????/?????
assume cs:code,ss:stack,es:table
table segment
db 'welcome to masm!'
db 24h,02h,71h
table ends
stack segment
db 16 dup (0)
stack ends
code segment
start: mov ax,table
mov es,ax
mov ax,stack
mov ss,ax
mov sp,16
mov ax,0b800h
mov ds,ax
mov bx,71eh
mov bp,0
mov cx,3
p: mov dx,cx
call sub1
loop p
mov ax,4c00h
int 21h
sub1: mov cx,16
mov si,0
mov di,0
s: mov al,es:[si]
mov ds:[bx+di],al
mov ah,es:[bp+16]
mov ds:[bx+di+1],ah
add si,1
add di,2
loop s
add bp,1
add bx,160
mov cx,dx
ret
code ends
end start | | |
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[第3楼]
[ 回复时间:2009-05-04 15:23 ]
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注册日期:2008-01-19 14:51 |
"mov bx,7beh
add bx,160 "这两条指令的问题。再看看喽! | | |
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