I guess with a royalty-free ISA the chips themselves are a bit more likely to be open source? SiFive has a lot of HDL (Chisel) code on their GitHub. I can find

I guess with a royalty-free ISA the chips themselves are a bit more likely to be open source? SiFive has a lot of HDL (Chisel) code on their GitHub. I can find at least the I/O blocks: https://github.com/sifive/sifive-blocks/tree/master/src/main/scala/devices https://github.com/sifive/sifive-blocks/tree/master/src/main...