[A83] Re: Delays and grayscales


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[A83] Re: Delays and grayscales




> From: The one and only SUCKER ... <sucker_pvn@hotmail.com>
> 
> >At 16:48 2001-10-02, you wrote:
> > >Wow.. that's some interesting stuff. So you are saying that the speed of
> > >the z80 is dependent of the battery status? That sounds very strange.
> > >Say that the Z80 is running at 6MHz (6mil cycles per sec.), then with
> > >bad batteries you would only get like 4MHz? Isn't there a clock
> > >generator that makes sure that the CPU exectues exactly those 6 mil
> > >cycles per second?

> >The clock circuit is a very simple one, called an RC-oscillator. It is
> >(extarnal of the cpu chip) just one resistor and one capacitor, and the
> >values of these defines the speed.
> >This setup is as said, dependant on voltage level, and also temperature.
> >That is right, in cold weather, the calc will run at a different speed then
> >in warm, with the same batteries...

> So which one is the faster one??

Since resistors are more resisting in higher temperatures, they are more voltage consuming. So a higher temperature means a slower calc.
It's easy explainable. A higher temperature means that the resistors particles move around faster, so it's more difficult for electrons to pass by.
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