org 0000h
 ajmp	main
 org	0030h
 main:
 mov r1,#0ffh
 mov r3,#00h
 mov p1,r1
 mov r2,#30h
 lcall delay
 mov p1,r3
 mov r2,#30h
 lcall delay
 ajmp main
 delay:		 
	push 02h
delay1:
	push 02h
delay2:
	push 02h
delay3:
	djnz r2,delay3
	pop 02h
	djnz r2,delay2
	pop 02h
	djnz r2,delay1
	pop 02h
	djnz r2,delay
	ret
 end