hamster Posted June 28, 2015 Share Posted June 28, 2015 I've got my new fractal viewer up and running on the new Nexys Video board. I'm just about to upload the source and a .bit file to http://hamsterworks.co.nz/mediawiki/index.php/Mandelbrot_NG_1080i It does not use any frame buffer - each pixel is completely recalculated every time it is displayed, allowing for super-smooth zooms and pans. Some highlights - Generates video DVI-D at 1080i. It is pretty hard to find examples of how to do 1080i properly. - Outputting over DVI-D, Although it can support 24-bit colour, however for the moment I am just using 64 different ones, as it aids debugging. - Does not use any IP except an unsigned 17x17 multiplier (because it wouldn't infer properly) - Each pixel spends 2,106 cycles going through the calculation pipeline before being sent to the display, - Uses 'only' 540 DSP blocks because when I used more it caused the board to reset itself, so the chip is capable of about 30% more math. - The heatsink gets a little warm... - Currently processes down to iteration 162. I'ld like it to go higher but must solve why it is resetting itself - You have the option of moving some of the DSP multipliers into LUTs, which allows you to calculate 'deeper' at the expense of power usage. - Performs about 120 billion 36-bit operations per second I've also got a 720p version, and a 640x480 that calculates three times as 'deep' per pixel, but that doesn't have the magical 1920x1080 resolution. Link to comment Share on other sites More sharing options...
Commanderfranz Posted June 29, 2015 Share Posted June 29, 2015 Hamster, Thanks for posting this awesome Nexys Video project. Link to comment Share on other sites More sharing options...
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