[A83] Re: Warming up


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[A83] Re: Warming up




On an early microprocessor (I think it might be the 6502 but I'm not sure),
there was an undocumented instruction that caused the microprocessor to do
nothing but toggle all its address lines as fast as possible. In certain
cases this would heat up the peripheral chips enough that the circuit board
would catch fire.

It's very easy to heat up the CPU more than a normal program, however you
won't be able through software to heat it up any *noticeable* amount...

Michael Vincent
Detached Solutions - www.detacheds.com
Radical Software - www.radicalsoft.org
----- Original Message -----
From: "Patai Gergely" <patai.ti@freemail.hu>
To: <assembly-83@lists.ticalc.org>
Sent: Friday, February 15, 2002 11:51 AM
Subject: [A83] Re: Warming up


>
> > On the 83- and 83+ (Resistor-Capacitor oscillator) you
> might be able to
> > achieve higher speed by rising the voltage above 6V, but
> that's dangerous
> > to the calcs internal
> resistors/capacitors/transistors......
> I didn't mean to cook the CPU, I was just wondering if it
> would be possible to write a dummy program that makes data
> transfers (bit switches, whatever) that causes the CPU warm
> up more than with programs that were not written for
> specifically this purpose.
>
> PG
>




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