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主题 : : 实验13 [待解决] |
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[帖 主]
[ 发表时间：2009-02-11 16:00 ]
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注册日期：2008-03-30 11:10 |
assume cs:code
data segment
db "welcome to masm!",0
data ends
code segment
start:
mov ax,cs
mov ds,ax
mov si,offset do7ch
mov ax,0
mov es,ax
mov di,200h
mov cx,offset do7chend - offset do7ch
cld
rep movsb
mov word ptr es:[7ch*4],200h
mov word ptr es:[7ch*4+2],0
mov dh,10
mov dl,10
mov cl,2
mov ax,data
mov ds,ax
mov si,0
int 7ch
mov ax,4c00h
int 21h
do7ch:
push ax
push bx
push di
mov ax,0b800h
mov es,ax
mov di,0
mov al,0a0h
mul dh
mov bx,ax
mov al,02h
mul dl
add bx,ax
do7ch1:
mov al,[si]
cmp al,0
je do7chret
mov es:[bx+di],al
mov es:[bx+di+1],cl
inc si
add di,2
jmp short do7ch1
do7chret:
pop di
pop bx
pop ax
iret
do7chend:
nop
code ends
end start | | |
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[第1楼]
[ 回复时间：2009-02-11 16:36 ]
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注册日期：2008-03-30 11:10 |
assume cs:code
code segment
start:
mov ax,cs
mov ds,ax
mov si,offset do7ch
mov ax,0
mov es,ax
mov di,200h
mov cx,offset do7chend - offset do7ch
cld
rep movsb
mov word ptr es:[7ch*4],200h
mov word ptr es:[7ch*4+2],0
mov ax,0b800h
mov es,ax
mov di,160*12
mov bx,offset s - offset se
mov cx,80
s:
mov byte ptr es:[di],'!'
add di,2
int 7ch
se:
nop
mov ax,4c00h
int 21h
do7ch:
push bp
mov bp,sp
dec cx
jcxz do7ch1
add [bp+2],bx
do7ch1:
pop bp
iret
do7chend:
nop
code ends
end start | | |
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[第2楼]
[ 回复时间：2009-02-11 16:36 ]
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注册日期：2008-03-30 11:10 |
assume cs:code
code segment
s1: db 'Good,better,best,','$'
s2: db 'Never let it rest,','$'
s3: db 'Till good is better,','$'
s4: db 'And better,best.','$'
s: dw offset s1,offset s2,offset s3,offset s4
row: db 2,4,6,8
start:
mov ax,cs
mov ds,ax
mov bx,offset s
mov si,offset row
mov cx,4
ok:
mov ah,2
mov bh,0
mov dh,[si]
mov dl,0
int 10h
mov dx,[bx]
mov ah,9
int 21h
inc si
add bx,2
loop ok
mov ax,4c00h
int 21h
code ends
end start | | |
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