nmigen
myhdl
nmigen | myhdl | |
---|---|---|
3 | 15 | |
643 | 1,003 | |
1.2% | 0.9% | |
1.8 | 5.1 | |
over 2 years ago | 2 months ago | |
Python | Python | |
GNU General Public License v3.0 or later | GNU Lesser General Public License v3.0 only |
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nmigen
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Help a newbie
You can either decide to learn VHDL/Verilog, or use something like nmigen. I recommend learning either Verilog or VHDL anyway, so you can at least read and understand existing designs, but I personally use nmigen.
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Do these work as JTAG programmers?
Alternatively, you can just use Vivado to build the bitstream and then use alternative tools like https://github.com/trabucayre/openFPGALoader and http://xc3sprog.sourceforge.net/ to upload the bitstream to your FPGA. This is what I do since I use nmigen myself.
- How to compare HDL simulation/implementation results to Matlab?
myhdl
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Launch HN: SiLogy (YC W24) – Chip design and verification in the cloud
Thank you for tackling this critical problem for logic designiners. I think the tools available are much too old for fast paced workflows.
From my experience attempting to get a similar workflow down for my company:
I tried to use verilator a while back but ultimately I couldn't because it didn't have same constraints in the verilog language features that I was going to use in production. It doesn't even matter who was missing a feature, verilator or the proprietary tool, it was just about getting them to be same that caused the cognitive dissonance that I didn't want to deal with.
I ultimately decided to move away from verilator and use the clunky proprietary tools since it was what would be used in production. Getting "verilator compatibility" seemed like a "nice to have".
Second, the a winning local-first framework of verilator wasn't really established. You show in your example running a test from the yaml file using what looks like a bash script. Even as an experienced programmer who knows bash and sh well, I still find it very hard to write complex thoughts in it. The last high level attempt I found to bridge this gap is likely https://www.myhdl.org/ I don't know them personally, but it seemed like they had some very good thoughts on what makes writing good hardware level tests good. I think it would be worth reaching out to them if you haven't already.
The one thing that even more critical was a way to run our tests locally. The 10-20 seconds it takes to start a docker image (best case) in the cloud is really frustrating when you are "so close to finding a bug" and you "just want to see if this one line change is going to fix it". Once we got our whole pipeline going, it would take 1-6 minutes to "start a run" since it often had to rebuild previous steps that cache large parts of the design.
So I think you will want to see how you can help bring people's "local's first" workflows slowly into the cloud. Some tools (or just tutorials) that help you take a failing test, and run it locally and on the cloud will be really good especially as you get people to transition!
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Why are there only 3 languages for FPGA development?
Also PyMTL, PyRTL, and MyHDL.
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Choice of Python HDL library
MyHDL
- Show HN: PyCircTools – Build digital circuits using Python
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Tools for designing hardware in Python
Any hardware designers here who use Python for designing hardware? There are a bunch of libraries that all seem promising MyHDL, PyRTL, PyVerilog, PyLog, PyMTL3, ... All seem to work roughly the same. Write code in Python and transpile it to VHDL/Verilog. Which of these are popular and well-maintained? MyHDL looks good but it's last release was 0.10 in 2018 and for hardware design you don't want to rely on 0.x software. Anything like Chisel for Python.
- Design Hardware with Python
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FPGA engineers specialize in DSP. What is your job? How much do you get paid? What is your work day like?
It is : https://www.myhdl.org/
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Compiling Code into Silicon
Personally I have fond memories of MyHDL [0], which may be seen as another "code-to-silicon" converter (or at least as the first step of a code-to-silicon workflow). I used it only briefly, and on a school project that had surprisingly little to do with actual hardware design [1], but it really felt "Pythonic" in the best possible way.
[0]: https://www.myhdl.org/
[1]: https://github.com/lou1306/gssi/tree/master/2pc
- MyHDL open-source package for using Python as a hardware description
- GitHub - myhdl/myhdl: MyHDL is a free, open-source package for using Python as a hardware description and verification language.
What are some alternatives?
Pyverilog - Python-based Hardware Design Processing Toolkit for Verilog HDL
chisel - Chisel: A Modern Hardware Design Language
pyverilator - Python wrapper for verilator model
pymtl3 - Pymtl 3 (Mamba), an open-source Python-based hardware generation, simulation, and verification framework
openFPGALoader - Universal utility for programming FPGA
PyRTL - A collection of classes providing simple hardware specification, simulation, tracing, and testing suitable for teaching and research. Simplicity, usability, clarity, and extendability rather than performance or optimization is the overarching goal.
axi - AXI SystemVerilog synthesizable IP modules and verification infrastructure for high-performance on-chip communication
XVC-FTDI-JTAG - Xilinx virtual cable server for generic FTDI 4232H.
SpinalHDL - Scala based HDL
qemu - Xilinx's fork of Quick EMUlator (QEMU) with improved support and modelling for the Xilinx platforms.
amaranth - A modern hardware definition language and toolchain based on Python