01:28 <sf-slack> <jason1234309> My name is Jason Prescott and I am working with Professor Nelson at BYU. I am currently working to add examples to the symbiflow examples repo and I was wondering if there is someone working on the symbiflow examples who could help me to understand how the .sdc files work with the examples.

01:42 <HackerFoo> jason1234309: Have you seen this? https://symbiflow.readthedocs.io/en/latest/vtr-verilog-to-routing/doc/src/vpr/sdc_commands.html

01:42 <tpb> Title: SDC Commands SymbiFlow (at symbiflow.readthedocs.io)

01:44 <sf-slack> <jason1234309> thank you I think that is what I needed

01:44 <HackerFoo> Has anyone seen this error from Yosys before?

01:44 <HackerFoo> ERROR: Assert `(unsigned)*c > (unsigned)' '' failed in ./kernel/rtlil.h:168.

01:47 <HackerFoo> It seems like there is a space (or a character <= 0x20) in a string somewhere, and Yosys doesn't like it. But I don't know where it would come from.

01:47 <HackerFoo> https://hydra.vtr.tools/build/7882/nixlog/1/tail

01:47 <tpb> Title: Hydra - Log of step 1 of build 7882 of job dusty:fpga-tool-perf: (at hydra.vtr.tools)

03:27 <sf-slack> <timo.callahan> Hi @jason1234309, I'm your guy, at least in US timezones.

03:31 <sf-slack> <timo.callahan> Ah @hackerfoo has the info for you already, thanks!

06:07 <HackerFoo> Has anyone gotten Ibex working for 200T? If so, which Yosys revision?

12:22 <sf-slack> <rwinkler> HackerFoo: The Ibex example on A200T is available in the symbiflow arch-defs xc7 tests: https://github.com/SymbiFlow/symbiflow-arch-defs/blob/master/xc/xc7/tests/soc/ibex/CMakeLists.txt#L46 Today I will publish the PR which uses SystemVerilog sources -> sv2v -> SymbiFlow for generating the bitstream. The design works with the latest conda package used by symbiflow-arch-defs:

12:23 <tpb> Title: symbiflow-arch-defs/CMakeLists.txt at master · SymbiFlow/symbiflow-arch-defs · GitHub (at github.com)

12:23 <sf-slack> https://github.com/SymbiFlow/symbiflow-arch-defs/blob/master/environment.yml#L6 (Yosys 0.9+2406 (git sha1 d8b2d1a2))

12:23 <tpb> Title: symbiflow-arch-defs/environment.yml at master · SymbiFlow/symbiflow-arch-defs · GitHub (at github.com)

13:41 <HackerFoo> @rwinkler Thanks. I'm using the same version of Yosys, but a later version of symbiflow-yosys-plugins, so maybe that's it.

13:44 <sf-slack> <rwinkler> HackerFoo: Here is the updated Ibex example which uses sv2v https://github.com/SymbiFlow/symbiflow-arch-defs/pull/1648 Maybe It will be useful for you

13:44 <tpb> Title: Add sv2v conversion to SymbiFlow build system by rw1nkler · Pull Request #1648 · SymbiFlow/symbiflow-arch-defs · GitHub (at github.com)

13:44 <HackerFoo> @rwinkler Thanks

14:28 <_whitenotifier-3> [yosys-symbiflow-plugins] kamilrakoczy opened issue #28: Add support for setting default DRIVE value in XDC plugin - https://git.io/JUUKv

18:54 <mithro> @litghost - Does this make sense -> https://docs.google.com/drawings/d/1qcsCVXU1KjqwAIjr-cMi9tYcbuNa2wFZV448H5HGsMA/edit

18:54 <tpb> Title: Where in SymbiFlow to add that test and/or example? - Google Drawings (at docs.google.com)

18:54 <mithro> https://docs.google.com/spreadsheets/d/1G-E2Dq8YG4g9Z6mTygpumwlI_vNlFUQinc9gMgePfec/edit#gid=0 <- XDC / SDC support tracking

18:54 <tpb> Title: XDC commands supported by SymbiFlow Yosys Plugins - Google Sheets (at docs.google.com)

20:00 <shapr> good thing IRC is socially distant

20:17 <mithro> shapr: Oh? What I do this time...