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There are some errors produced in the fasm2bels flow described here: https://github.com/SymbiFlow/fpga-tool-perf/issues/159#issuecomment-645512546.
These errors did not show up for the smaller test…
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I get the following unexpected message when I try to run the --gui version of nextpnr-gowin on Ubuntu 20:
```
nextpnr-gowin --gui --device "GW1NR-LV9QN88PC6/I5"
Info: Series:GW1N-9 Device:GW1NR-…
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Adding an issue here while I track it down.
Python on Windows is _slow_. Enough that I'm exceeding the 1-hour build time on AppVeyor when building ECP5. For comparison, here's the amount of time …
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Just starting using this toolchain, so I might be using it wrong... Anyway, if this feature has not been implemented yet, I might as well lend a hand :)
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Apologies if this is the wrong place to post this I'm pretty new to icestudio and FPGAs in general.
Im trying to create a bi-directional switch on an I2C data line but I can't seem to get it to bui…
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Lattice's website states, that iCE40-HX4k and -HX8k both feature two PLLs.
* http://www.latticesemi.com/en/Products/FPGAandCPLD/iCE40
I created a Verilog project in which I use both PLLs. Synthesi…
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Hi,
I just tried to do make prog and it fails with:
```
23.50. Executing CHECK pass (checking for obvious problems).
Checking module TMDS_encoder...
Found and reported 0 problems.
23.51. Exec…
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When I import a JSON file from the GUI interface, an error is reported as follows:
![nextpnr_error](https://github.com/YosysHQ/nextpnr/assets/134853466/587b9c3d-e57e-4e8e-9487-47a2934ad423)
I in…
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Sometimes the Oxide build fails with nextpnr failing to complete. In these cases it is stuck in "Running main router loop..." for many hours.
The attached file [hps-build.tar.gz](https://github.com…
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Can we use upstream prjxray in .gitmodules, i.e. `url = git@github.com:f4pga/prjxray.git`? Note, kintext-chatter:nextpnr-xilinx has its own submodule of a customized repo::branch *prjxray-db::k325*. T…