org 00h
loop:	mov a,p1
	mov b,p1
	anl a,#00000010b
	anl b,#00000001b
	rr a
	mov r0,b
	xrl a,r0
	jnz bits        <b><== What does it do here, if it's zero, that it doesn't do if it's not?</b>
bits:	setb p2.0
	sjmp loop
	end