Comment by pavehawk2007

I've been trying to use the Sipeed Maixduino. It's much like the hifive1 except it uses the Kendryte K210, which is a fully supported RV64GC dual-core. It even supports supervisor and user modes. It's also relatively cheap. The problem is that documentation is lacking, so I'm having to reverse engineer their BSP: https://maixduino.sipeed.com/en/