Deluxe Pokey used as RNG??

I just had to change the Pokey in my Asteroids Deluxe. Board is now
working great.
     Before the old pokey failed, I was getting some really weird symptoms
from the board. New waves of rocks would start, with all rocks EXACTLY
overlapping each other. Aside from this, the failing pokey had the board
putting out some really weird random noise (to be expected). However, I did not
expect to see the rocks overlapping and have no separation during new
waves, or when they were hit.
     I didn't know of any pokey's function to be used as a random number
generator, am I wrong here? Or was the failing pokey also screwing up some
stuff in the AVG or logic side? Anybody have any takes on this?
 
Thanks,
MK

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Received on Tue Jul 13 14:13:54 2010