Rust on RISC-V (VexRiscv) on SpinalHDL with SymbiFlow on the Supercon Badge (craigjb.com)

If using Rust for RISC-V interests you, there is also this tutorial series for writing an OS [1], which was discussed on here a while back [2].

[1] http://osblog.stephenmarz.com/index.html

[2] https://news.ycombinator.com/item?id=21135992

Bingo!

Need a starting point of FPGA especially the hardware side. Just more familiar with basic like blue pill level. Not sure what he is talking about. A bridge too far i supposed.

And better start with hardware then basic software would help.

https://hackaday.com/2019/11/04/gigantic-fpga-in-a-game-boy-...