Subject: Re: [stella] incoming source From: Thomas Jentzsch <tjentzsch@xxxxxx> Date: Sat, 11 Dec 2004 18:10:26 +0100 |
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 |
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