@RetroVadus I don't have Rpi4 and I can't test this situation, but I saw that you opened several topics, one for each problem you encountered. Due to the high demand and low staff, it is difficult to answer everyone here. If possible, I suggest you join the Discord support channel: https://discord.gg/NbQFbGM

@paradadf That worked now Thanks again. I'll try to find out "why it didn't work before". I think I made something wrong.

@yadid yeap there were compatibility problems between A500 and A600, but that was not most of the stuff. Probably due to a different kickstart and newer librairies. On RCB, i mainly use whdl roms and a few .adf. Most of the games & demos (i automatically exclude AGA softwares that are stocked in A1200 folder) run without changing the default configuration. If you are a former Amiga user, i suggest you download whdl in .lha format and try them. For info, the next RCB V7 uses a new version of Amiberry (and the mouse is at least optimizted), the GUI interface is clear and simple. P-uae is also avaible (i prefer amiberry although).