/*
 * Example4_1.asm
 *
 *  Created: 04/14/2017 08:11:08 
 *   Author: Naimi
 */ 

 	LDI	R16, HIGH(RAMEND)
	OUT	SPH, R16
	LDI	R16, LOW(RAMEND)
	OUT	SPL, R16	

	LDI	R16, 0xFF
	OUT	DDRB, R16	
	OUT	DDRC, R16	
	OUT	DDRD, R16	

	LDI	R16, 0x55		
L3:	OUT 	PORTB, R16	
	OUT 	PORTC, R16	
	OUT 	PORTD, R16	
	CALL 	QDELAY	
 	COM 	R16		
	RJMP 	L3

QDELAY:
	LDI	R20, 16
D0:	LDI	R21, 200
D1:	LDI	R22, 250
D2:	NOP
	NOP
	DEC 	R22
	BRNE 	D2
	DEC 	R21
	BRNE 	D1
	DEC 	R20
	BRNE 	D0
	RET