Pr4:
	org 0
	
	mov	10h,#35h
	mov	11h,#14h
	mov	20h,#12h
	mov	21h,#13h
	
	mov	r0,#10h
	mov	r1,#20h
	mov	a,@r0
	add	a,@r1
	mov	r6,a
	clr	a
	
	mov	r0,#11h
	mov	r1,#21h
	mov	a,@r0
	add	a,@r1
	mov	r7,a
	
	
	nop
	end