assume cs:code
data segment
db 'welcome to masm!',0
data ends
code segment
start: mov dh,8
mov dl,3
mov cl,2
mov ax,data
mov ds,ax
mov si,0
call show_str
mov ax,4c00h
int 21h
show_str:
mov di,0
mov al,0a0h
mul dh
mov dh,16
div dh
add ax,0B800h
mov es,ax
mov dh,cl
mov bl,dl
mov bh,0
s:mov cl,[si]
mov ch,0
jcxz ok
mov dl,[si]
mov es:[di],dx
inc si
add di,2
jmp short s
ok:ret
code ends
end start
============================== f
这是实验10的第一小题,。。。
请高手指教 |