This is a processor definition for the Hitachi H8/500 family of microprocessors for Ghidra. It was based on Martin Kennedy's Gitea repository. and I've added functionality for the H8/520 in maximum mode. Unfortunately I do not think there's a way to cross-fork. His repo focuses on the H8/538, and is still under active development as of 2024-01-23, so make sure to check his out if you need that processor. Especially since my work on the 520 may have rendered the 538 unusable in this repo.
Make sure you have Ghidra installed, with sleigh available in the support directory.
Change the GHIDRADIR variable inside the Makefile to the location where Ghidra is installed.
Run make && make install