RISC-V is not an open-source royalty-free Core design. It's an open-source royalty-free ISA. Using the RISC-V ISA is free, and that means being able to use all

RISC-V is not an open-source royalty-free Core design. It's an open-source royalty-free ISA. Using the RISC-V ISA is free, and that means being able to use all the tools developed for this ISA for free. It is still very attractive in terms of cost and competitiveness, but be careful not to confuse ISA and Core design