;=======================================================================
;Assembly Language Tutorial for the SX Microcontroller
;Program 4.1
;=======================================================================
		device	sx28l,oschs3
		device	turbo,stackx,optionx, watchdog
		IRC_CAL	IRC_SLOW
		reset	start_point
		freq	500000  	; 500 kHz


		org	0
start_point     mov   	!rb,#0    	; make all of port b outputs
again           mov	w,#$FF
	       	xor	8,w       	; invert bits
               	mov   	rb,8
           	sleep