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A simple LED blinky builds with Gowin tools and flashes with openFPGALoader without a problem.
When built with nextpnr-gowin or nextpnr-himbaechel and packed with gowin_pack, openFPGALoader complai…
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Flashing a Tang Nano 9K board with a yosys/nextpnr-himbaechel/gowin-pack:
Fails with a CRC error when specifying the board with a `-b tangnano9k`;
Succeeds with `-c ft2232`
I've localized the…
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nextpnr-gowin seems to have been removed from oss-cad-suite (current git version), so I'm using nextpnr-himbaechel.
Is Fmax estimation (yet) implemented in nextpnr-himbaechel for Gowin devices?
If…
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I see that there's a nextpnr-machxo2 but no nextpnr-machxo3. I thought that maybe I could try using nextpnr-machxo2 with a MachXO3 target device like:
$ nextpnr-machxo2 --device LCMXO3L-2100E-5MG12…
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After running the command, FAB_ROOT=.. nextpnr-generic --uarch fabulous --json test_design/${DESIGN}.json -o fasm=test_design/${DESIGN}_des.fasm
I see an error
ERROR: Max frequency for clock 'clk'…
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After waiting a few days without a response from Lattice for a free license, I decided to move forward without Icecube2 (Linux is more convenient for me, anyway!)
I've installed icestorm and the re…
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Trying to integrate some custom-tiles, I have used the existing tiles and just commented out some ports in the .v of the new BEL with /* */ and //. I have adjusted the switch_matrix.list and .csv for …
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I need help with what appears to be a bug somewhere in the Amaranth/Yosys/Apicula ecosystem. It could also be me because this is my very first day playing around with Amaranth, Yosys, and Apicula. An…
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Would it be possible to compile nextpnr, in particular nextpnr-ecp5, with GUI support?
According to https://github.com/YosysHQ/nextpnr GUI support is disabled by default to reduce dependencies. It …
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In my core, I use Symbiflow tool to synthesize and generate bitstream to an Artix 7 FPGA.
I recently needed to pass a vlogdefine to Yosys due to memory initialization but the parameter is not passe…