nextpnr/generic/examples/README.md

Generic Architecture Example

This contains a simple, artificial, example of the nextpnr generic API.

• simple.py procedurally generates a simple FPGA architecture with IO at the edges, logic slices in all other tiles, and interconnect only between adjacent tiles

• simple_timing.py annotates cells with timing data (this is a separate script that must be run after packing)

• write_fasm.py uses the nextpnr Python API to write a FASM file for a design

• bitstream.py uses write_fasm.py to create a FASM ("FPGA assembly") file for the place-and-routed design

• Run simple.sh to build an example design on the FPGA above