No documentation trace of multicast feature that's in progress

[makotolagano]

I know that multicast is in a development phase currently but it would be really cool if some documentation trace could be made regarding it. I'm trying to figure out the way it should be used by reverse-engineering the RTL.

[fischeti]

Unfortunately, we are currently in a tapeout phase and we won't have time to add a proper documentation in the near future. The currently open PR #123 might also stay open for a while until we have undergone proper integration and testing.

You can follow the integration into the system that we will tapeout soon here https://github.com/pulp-platform/picobello/pull/32/files. Also the encoding that we are using is essentially the same as we are using for the multicast extensions in the AXI Xbar. You can find a paper describing it here.

I hope this helps a bit.