def decodificacio(INSTRUCCIO):
	if (INSTRUCCIO & ZERO_OPERAND) == 0:
		print "Instruccio sense operand"
	elif ((INSTRUCCIO & ONE_OPERAND) == 050000) or ((INSTRUCCIO & ONE_OPERAND) == 060000):
		print "Instruccio amb un operand"
	elif (INSTRUCCIO & ONE_OPERAND) == 070000:
		ins = INSTRUCCIO & 07000
		if ins == 0:
			print "Instruccio DIV"
		elif ins == 01000:
			print "Instruccio MUL"
		elif ins == 02000:
			print "Instruccio ASH"
		elif ins == 03000:
			print "Instruccio ASHC"
		elif ins == 04000:
			print "Instruccio XOR"
		elif ins == 07000:
			print "Instruccio SOB"
	else:	print "Not known instruction"