I find it very hard to find relevant info on that forum.. Like I used a link in this video since I could not find relevant info.. [Tutorial](https://youtube.com/playlist?list=PL0gzPWZftyS6dyElP51ZYWmWDpUC_hw8_&si=-i5bWy5QLdgVZQb2)
I assume sonED2 and the disassembly mentioned in that tutorial is the most relevant info. I am happy to be corrected..
like there is [sonLVL](https://info.sonicretro.org/SCHG_How-to:Set_Up_SonLVL)
So sorry when outdated info is posted!
There is also a research [forum](https://sonicresearch.org/community/index.php)