James Bowman

Oh, is this 32-bit or 64-bit?

Yes, please do you get: ``` $ sha1sum build/nuc.hex b3370dea361fd65155a2bb5e2d764fb5065895cd build/nuc.hex ```

Right. At this point it looks like yosys/arache-pnr is where the difference lies. OK... puzzling.

One thing... you are running a more recent Ubuntu than me. What version Ubuntu do you have installed?

Will do... I am on Ubuntu 12.04.2 LTS On Thu, Oct 15, 2015 at 4:54 PM, Ryan [email protected] wrote: > I'm on 15.04, what's yours? Happy to spin up another...

@RGD2 no new issue, thanks. These are all the same root cause. Under some circumstances the synthesis toolchain (arache-pnr, yoysys, icestorm) produces a bad FPGA image.

Yeah, agreed. Really nice stuff.

The FPGA is an Altera Stratix III, EP3SL150F1152C2. I'm running the DE0-Nano build. To build it, I removed the PLL module and hooked up the 50 MHz board clock as...

hmm: https://github.com/cebarnes/cordic

Good summary: http://www.andraka.com/files/crdcsrvy.pdf