RISC-V with vector extension for FPGA


I would like to know if there is any information on RISC-V "V’ extension for FPGA? what is the maximum frequency and if this is working?


The V extension is still in draft form, and still changing in ways that cause major incompatibilities, so there is no useful V extension support anywhere at present. I’m not aware of any free cores with draft V extension support at this time. Given the amount of effort, and the fact that things are still changing rapidly, it could be a while before there are any free implementations. There are multiple companies including SiFive working on V extension implementations, that are changing as the V extension changes. You would have to contact sales if interested in getting access to that from SiFive.