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Old 26th Feb 2021, 6:52 pm   #686
SiriusHardware
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Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 7,318
Default Re: Non-working Commodore PET 3016

Yes, the ability to 'pan' left and right can be useful.

I'm going to let Mark go with this for a while so you don't get conflicting instructions sending you in two directions at once.

In the meantime a little exercise for you:

Taking your screen shot in #680,

Can you say, roughly...

How many milliseconds there are between the falling edge of the first _CE pulse and the falling edge of the second _CE pulse?

How long (In milliseconds) is one _CE pulse?

Assuming the low edges of the _CE pulses are at 0V, what voltage is the _CE line at when it is NOT low?

(With the scope settings as they were, each horizontal division is 50mS: Each vertical division is 2V).

Last edited by SiriusHardware; 26th Feb 2021 at 6:57 pm.
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