cpu 8086
	org 256
start:
	mov cx, 20
	xor bx, bx
.loop:
	mov ah, 3Eh
	int 21h
	inc bx
	loop .loop

	xor ax, ax
	xchg ax, [2Ch]
	mov es, ax
	mov ah, 49h
	int 21h
	xor dx, dx
	int 27h
	mov ax, 4CFFh
	int 21h