[Libre-soc-bugs] [Bug 1004] FPGA bring up for platform definitions

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=1004

--- Comment #8 from Cesar Strauss <cestrauss at gmail.com> ---
(In reply to Andrey Miroshnikov from comment #7)
> Just to clarify, I set JP4 (that's the silkscreen on my board) to connect the
> QSPI and JTAG. I may be wrong, so let me know (but the example worked, so my 
> jumpers must be in right place).

Indeed, seems correct. See the entry "JTAG", on the "Programming mode" table,
on the picture:

https://digilent.com/reference/_detail/nexys-video/config_options.png?id=programmable-logic%3Anexys-video%3Areference-manual

> Looks like these examples are working as expected.

Excellent!

This might mean that we don't need Symbiflow after all, and that updating
nextpnr-xilinx is all that's needed.

Let's just check that this test design doesn't really work with the outdated
nextpnr-xilinx version provided by the developer scripts.

Please try:

cd ~/src/nmigen-boards
git pull
cd nmigen_boards/test/nexys_video/ledon
./build.sh
./prog.sh

I expect it not to work (just the DONE led turns on), but we never know...

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