Important

Since May 2022, packages providing Architecture Definition assets do not include CLI utilities/wrappers to interact with Yosys, Verilog-to-Routing, etc. For backwards compatibility, end-users can install Python package f4pga from gh:chipsalliance/f4pga. For instance: pip install https://github.com/chipsalliance/f4pga/archive/main.zip#subdirectory=f4pga.

Verilog To Routing Notes

We have to do some kind of weird things to make VPR work for real architectures, here are some tips;

• VPR doesn’t have channels right or above tiles on the right most / left most edge. To get these channels, pad the left most / right most edges with EMPTY tiles.

• Generally we use the vpr/pad object for the actual .input and .output BLIF definitions. These are then connected to the tile which has internal IO logic.