mov ax,3
	mov bx,0
	mov ecx,X
	mov dx,1
	int 80h
	mov ax,[X]
	cmp ax,49
	je hoge
	mov byte[X],49
	jmp fuga
hoge:
	mov byte[X],48
fuga:
	mov ax,4
	inc bx
	int 80h
	mov ax,1
	dec bx
	int 80h
	section .data
	X db 0