Which board/Soc/SMB can I use to Develop C/C++ and JTAG Debug a RISC V?

Hi,

Anybody out there managed to write C/C++ with a working toolchain and debug a RISC V ? I’ve tried getting a few boards latest was a Maixduino, which has a Kendryte K210 on it, but I can’t figure out how to debug the thing with a JTAG. It seems the JTAG on it is connected to the ESP32.

Thanks
Marcus