Thomas Boutell wrote:
> It looks like as soon as the same number comes up, the entire
> sequence repeats.
Yup. (pseudo-random ;-)
> And I saw a repetition after only 128 values. So some bytes must
> never come up. None of which matters if all you need is a reasonably
> random-looking bit or two with a periodicity of at least 128, and I
> think you definitely have that in the rightmost bits at least.
If you use one of the "perfect" XOR values
(http://www.ece.cmu.edu/~koopman/lfsr/8.txt),
the sequence has a periodicity of 255.
Have fun!
Thomas
_______________________________________________________
Thomas Jentzsch | *** Every bit is sacred ! ***
tjentzsch at web dot de |
