What is the usefulness of the U3 2MB SPI flash? After almost 2 decades since I last touched an FPGA in university, I have an idea for a project that would need one, and I can afford the extra 3€ if that's going to make my life easier using the Gatemate board, I just don't understand what it is for!
It is very important for a lot of software to run, my advice is to get the version with the SPI flash. For example, check this project (search in page SPI):
https://github.com/colognechip/gatemate_ila
Also check this previous post here:
https://www.olimex.com/forum/index.php?topic=9432.0