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Mandelbrot on my new Genesys2


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Hi all,

As a proud new owner of a Digilent Genesys 2 board hereby a video of the Mandelbrot demo running on my board!

I've had to make some very small changes to the design to disable the external Joystick, as I don't own a PMOD Joystick and Rotary Encoder (yet).

My last experience with programmable logic was 22 years ago with a Lattice 20V8 GAL so I've made a quantum leap B)

Greetings, Iwan




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Wow!  That is awesome!

May I assume that you are recalculating the whole output multiple times a second to maintain that wonderful video display?  Or did you precalculate it and fill a memory with it from which you then drew the display?

Still, either way, it's really cool.

Thanks for posting,


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Hi Iwan!

That is a far better video than I can make with my cell phone. Hope you don't mind if I share it on Twitter.

@Dan - yes, every pixel is calculated on the fly, requiring 255 complex FMACs per pixel,and some other stuff (or about 192,000,000,000 operations per second).


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