So, AetherSX2 is out for android, a great emulator of PS2, works really well! Could this bring a future emulator for the raspberry pi 4 on recalbox?
The whole project is based on PCSX2, since Android and the RPI 4 shares the same architecture it seems very promissing, however, the main problem could be the graphic power on the RPI 4, but we could try to run on software mode.