There is currently (December 2021) no out-of-the-box eval board available with this core.
However, there is an affordable FPGA maker board and a good tutorial from emb4fun available to get the NEORV32 running on hardware: Tutorial
- The JTAG speed used must not exceed 1/5 of the current CPU speed of the NEORV32.
- Up to version 188.8.131.52 (22nd November 2021) the JTAG interface of the NEORV32 was not JTAG compliant and changed the data on the wrong edge of TCK.
This could cause problems when using JTAG speeds of 4 MHz and higher.