Tjaart van der Walt <tjaart@wasp.co.za> wrote:

> Here's the easiest way. You can do it in hardware or software.
> Although it is not *truly* random, it is quite good indeed :
>
> Take a shift register (the longer the better), and tap two or three
> of the stages. Add the taps (discard the carry - it is the same as
> XORing) and feed back into the input of the shift register.

Tjaart:

This only works well if you pick the CORRECT two or three taps...
Just choosing an arbitrary pair is unlikely to give a reasonably-long
sequence.

There are a couple of linear-feedback shift-register routines on my
web page...

-Andy

=== Andrew Warren - fastfwd@ix.netcom.com
=== Fast Forward Engineering - Vista, California
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