Re: Signature Analysing Question

Mark Shostak wrote:
>
> In message "Signature Analysing Question", pinball@istar.ca writes:
>
> > Hi, Mark!
> >
> > You can also wire up a special CPU that is locked into "NOP" function,
> > this will generate a nice pattern for SI.
> >
> > John :-#)#
>
> Hi John,
>
> I've done that, but for some reason on Atari boards, the NOP configuration
> does not yield stable signatures. So far I've been too busy to figure out
> why, so I just use the CAT box. However, it does work well on Space Inva-
> ders.
>
> Cheers,
> Mark
>
> P.S. Come to think of it, it may just be the phase difference between ph.1
> and ph.2 of the clock. With the CAT, they're in phase, but with the
> NOP they're not. Note to self: check the clocks.

Hi!
(I take it you like John Brunner?)
Anyways, you will need to turn off the Watchdog Reset feature on Atari
boards for the NOP to work correctly...

John :-#)#

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