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thanks a lot for this extension and the tutorials around the tang nano 9k ! its been super helpful getting started with fpga stuff for me.
im now trying to program a [icesugar-nano](https://github.…
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When trying to synthesize a design for the LICL-40, NextPNR-nexus reports `Cell type 'PCLKDIV' instantiated as 'U$$5' is not supported by this device.` despite the primitive being listed on the Lattic…
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> The dependency on `pypy3.6` worries me a little. Let's merge and log an issue to follow up on that.
>
> _Originally posted by @mithro in https://github.com/SymbiFlow/conda-packages/pull/89_
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I'm using opensuse leap and tried to build nextpnr from sources (commit 137241cfef385a68d2ce732a5b3283458790543d). Eigen 3.3.4 is installed. The build fails with the following output:
```bash
[ 68%]…
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As the arachne-pnr github says: Arachne-pnr is not maintained anymore; use nextpnr instead, which is a complete functional replacement with major improvements.
The commands to use nextpnr-ice40 wit…
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One of the more fragile but critical pieces of logic in the FPGA interchange nextpnr arch is the site routing logic. For clarity, this is the collection of code that implements the [isBelLocationVali…
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I'm trying to use the snap install with oss-cad-suite + litex environments and I _think_ I'm hitting a 3.8 vs 3.11 issue with a script crashing:
```
Python path configuration:
PYTHONHOME = '/ho…
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I think I've encountered a bug that affects the pin mapping for the Basys3 board (part name xc7a35tcpg236-1). I've got a program that maps the 16 switches to a seven segment display but the behavior o…
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If I miss a trailing ; in an lpf file I get this error:
```
terminate called after throwing an instance of 'nextpnr_ecp5::assertion_failure'
what(): Assertion failure: str.back() == '"' (/home…
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Hi. I've been trying to port RISCBoy to the [Riegel](https://github.com/machdyne/riegel) FPGA computer without much luck so far.
I'm wondering if this repo is still supposed to be in a working stat…