why you guys so powerful

[quantrpeter]

hi, gowin fpga seems not open source, why you guys so powerful to generate the bitstream file? How can you do that? thanks

[yrabbit]

It's simple: you take an empty file

module top();
endmodule

generate an image with the vendor IDE, this will be your template, then you add one LUT, generate the image and compare it with the template. Change the position of the LUT and see what changed and what didn't.
Take a look at the document https://github.com/YosysHQ/apicula/blob/master/clock_experiments.ipynb
or the movies:

https://www.youtube.com/watch?v=Vt7FyOXfkZA&list=PLIYslVBAlKZad3tjr5Y4gqBV3QKQ5_tPw

[pepijndevos]

Or my internship report https://github.com/pepijndevos/internshipreport/releases/download/tag-f2973b39f18d72c18a0ede2d765fb1ff8541cdeb/main.pdf