?? str.asm
字號(hào):
data segment
msg1 db 'Please input the String:','$'
crlf db 13,10,'$'
data ends
code segment
main proc far
assume cs:code,ds:data
start:
push ds
sub ax,ax
push ax
mov ax,data
mov ds,ax
mov ah,09
lea dx,msg1
int 21h
mov ah,09
lea dx,crlf
int 21h
mov cx,20
again:
mov ah,7
int 21h
cmp al,0dh
jz exit
xor al,0ffh
mov dl,al
mov ah,02
int 21h
loop again
exit:
ret
main endp
code ends
end start
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