Видео

Seems it is name conflict. There might be better way to resolve it, but quick hacking by replacing "byte" with "char" allows it to build (in GDS3D/libgdsto3d/gds_globals.h and GDS3D/libgdsto3d/gdsparse.cpp).

@@garyhuang2742 Thanks, that fixed it for me!

Sorry to hear that there is an error in your skywater pdk build. Fortunately there is a skywater-pdk slack channel you may ask help from join.skywater.tools/ Questions could be posted with detailed build error descriptions and the skywater-pdk slack community could help since it has thousands users and maybe someone has seen the build errors you have.

Instructions to install Cygwin/X can be found at x.cygwin.com/docs/ug/setup.html#setup-cygwin-x-installing The X desktop should get up and running on Windows 7 without sweat. However, for Windows 10, be aware of incidents reported at cygwin forum cygwin.com/pipermail/cygwin/

Glad that you were able to make it work on your system. Great perseverance!

@@garyhuang2742 I had to dos2unix the whole graywolf directory and also dos2unix everything in C:\cygwin64\usr\local\lib\graywolf\bin\flow otherwise it gave a reading syntax error when doing graywolf map9v3 the full dos2unix command was: find . -type f -print0 | xargs -0 dos2unix

i wonder why you didnt need to do that since we are both on windows?

Thank you for sharing your tips to get it work. I don't know why it would require to convert files from dos to unix format. But perhaps the text editor setting was set to save it in dos format?

This video basically exercises the synthesis steps given by www.clifford.at/yosys/files/yosys_presentation.pdf, page 18 to page 37. In the official yosys site, there is a manual www.clifford.at/yosys/files/yosys_manual.pdf which answers pretty much all questions users may have. Also in www.clifford.at/yosys/documentation.html#Support it points out the places that questions can be posted for help. Sorry for not being able to make a comprehensive tutorial since yosys has a rich set of functionality. This video simply intends to give beginners a visual presentation on where things are and what basic function yosys provides so that a new user can quickly get the source compiled and start using it. Hope the few resource links above may help getting to the right direction.

There is a comprehensive tutorial on OpenLANE by the team at ruclips.net/video/d0hPdkYg5QI/видео.html That tutorial may have answered majority of questions. Also the OpenLANE document site is the good resources openlane.readthedocs.io/en/master/?badge=master

There is a base sdc at scripts/base.sdc which might give a rough idea on few constraints. Nevertheless, it is advised to direct the questions to OpenLANE code owners for the sake of information correctness. A link "Join the community on slack" can be found at github.com/efabless/openlane Hope it helps.

This presentation is an exercise based on instructions from x.cygwin.com/docs/ug/setup.html#setup-cygwin-x-installing The X desktop should get up and running without sweat on Windows 7. However, for Windows 10, there are incidents reported at cygwin forum cygwin.com/pipermail/cygwin/ Good luck with Windows 10:(

Graywolf expects a design with cell netlists and parameters (for instance circuit.cel and circuit.par) to be given when executed. If not, graywolf would terminate immediately with a syntax error and output messages on how to specify the command arguments. If there wasn't a circuit design, an example testing circuit may be cloned and checked out for testing at github.com/rubund/graywolf and change current directory to where the circuit is "cd graywolf/tests/map9v3" issue command "graywolf map9v3". That would do it.

Graywolf takes inputs circuit.cel and circuit.par. The circuit.cel contains cell geometry and circuit.par placement parameters. The circuit cells and parameters can be synthesized from verilog by qflow. Refer to video, IC Design EDA on Windows with QFlow uploaded on 2020-09-07 for details.

@@garyhuang2742 can we run graywolf individual without qflow?

Graywolf can run individually, and the command to run is "graywolf circuit" where circuit is the circuit design containing circuit.cel and circuit.par. The resultant outputs of a simple design could be circuit.pl1 and circuit.pl2 where the circuit.pl1 contains the placement of cells, and circuit.pl2 contains the placement for cell rows and pads. For an overview of graywolf, there is a design document at opencircuitdesign.com/qflow/archive/TimberWolf.pdf where it has detailed information on the program functionality and the format of input and output files. Hope this information helps.

@@garyhuang2742 sir after executing yosys...i generated . Blif . Spice . V . Ilang But sir I'm little confused how we can use these files for graywolf....we aren't getting...tried every command on Ubuntu but we are getting error only

@@garyhuang2742 our task is to make qflow with our college standard cell but...sir is there any open source qflow where we can add our cell library...and all the tools remain same

In cygwin setup, pick "Category" from View field (already did at video timestamp 01:24) and expand the packages under "All" to see LXDE in the list. Under LXDE package, select all items such as gpicview, lxappearance, lxapprearance-devel, lxappearance-obconf, lxde-common, etc. for installation which would probably take up 2 to 3 GB disk space. Proceed installation as usual and the LXDE would appear in the Windows Start Menu after installation completion. For better experience, a full installation with "All" packages is preferred and would save a lot of effort although the full installation takes approximately 87 GB on disk.

@@garyhuang2742 When I click on LXDE in Start Menu it just shows a black screen

Sorry to hear that cygwin/x package does not work on your system. My system is Windows 7 on Intel chipset. I guess I was probably lucky by using very old, 10+ years, hardware, software OS and drivers that were tested by the cygwin/x developers at the time. The expectation is that the cygwin/x, with straightforward installation, should automatically get up and running without any user manual setup the X Window. Perhaps you might want to ask help from cygwin/x developer community at, cygwin/x issue reporting, x.cygwin.com/devel/backtrace.html cygwin/x faq, x.cygwin.com/docs/faq/cygwin-x-faq.html cygwin/x user's guide, x.cygwin.com/docs/ug/cygwin-x-ug.html cygwin/x mail archive, sourceware.org/pipermail/cygwin/ cygwin/x, x.cygwin.com/