LIST P=16F628A
 #INCLUDE "P16F628A.INC" 	
   __CONFIG _CP_OFF & _PWRTE_OFF & _WDT_OFF & _BODEN_OFF & _INTRC_OSC_NOCLKOUT & _LVP_OFF & _MCLRE_ON	
 
		org 	0x00
	goto	main

	

		Cblock	0x20
	
		endc
main
	banksel TRISA
	clrf	TRISA
	clrf	TRISB
	clrf	PORTB
	clrf    PORTA
	banksel	PORTA
	bsf		PORTA,0
    bsf		PORTA,2
	bcf		PORTA,0
	bsf		PORTB,0
	bsf		PORTB,2
	bcf		PORTB,0
	goto main
		End