Re: Induced interference that can be measured (c64)

Use gamma rays to flip bits in RAM.


On Thu, May 3, 2018 at 15:11 Nejat Dilek <imruon@gmail.com> wrote:

> Hi there,
>
> Just out of curiosity, I got a crazy idea. Is there any means to
> detect an external signal be it light / sound / magnetism / heat etc.
> on the C64? I know there isn't a proper one, and the thing is almost
> digital except sid chip.
>
> The idea here is : Input a small program to C64, run it. Run a data
> transfer software on a phone and transmit data to the software on the
> c64 using that covert channel. So possibly heat and magnetism is out
> of scope since we can't induce those easily with a phone :)
>
> The closest possibility coming to my mind is : inducing interference
> on the POTX / POTY lines. They seem to be connected directly to the
> sid. Say anything that can change the analog value read from those
> cycles would be  a candidate.
>
> I don't think we can do anything with light I guess and the soundwaves
> are possibly very out of spectrum to induce anything on these analog
> circuits.
>
> What do you think?
>
> Regards,
>
> Nejat
>
>