set	I5, 29
	bsr     fib
	print	I5
	print	"\n"
	end
fib:	le	I5, 1, L0
	sub	I0, I5, 1
	save	I5
	set	I5, I0
	bsr	fib
	restore	I0
	sub	I1, I0, 2
	save	I5
	set	I5, I1
	bsr	fib
	restore	I0
	add	I5, I5, I0
	ret
L0:	set	I5, 1
	ret