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Karja

Ah, cool! Then, here's an updated fibonacci function which handles fib(0) as well:

	mov eax, 1

; In: eax = n
; Out: ecx = fib(n)
	mov	ecx, 1
	cmp	eax, 0
	jle	end
	mov	ebx, 0
loop:	mov	edx, ebx
	add	edx, ecx
	mov	ebx, ecx
	mov	ecx, edx
	dec	eax
	cmp	eax, 0
	jg	loop

end:	invoke	print, ecx

Just change the initial eax to something else to see different results. :)

(Oh, and you can't change the add to an inc. ecx is updated with a new value in each loop.)