@saku00 so I tried some Naomi 2 games on the standalone flycast on a pi4 2gb. Good news and bad.

They boot. But they're absolute slide shows. 4-7 FPS at best.

https://ibb.co/fvXsjwn - you can see the FPS counter in the corner. So I would say Naomi2 is a no for a pi4. Not surprising given they're basically PS2/GameCube/Xbox graphic games. Maybe a pi5 or 6 in a few years will be able to handle that.

@isidoro80 I did these tests:

I have the game rom F-Zero X - Expansion Kit (Japan).ndd (CRC32: AE31F57F)
in the n64dd folder I put 2 files for the game: F-Zero X - Expansion Kit (Japan).ndd and a pair of the file ipl.n64 (japan CRC32: 7F933CE2) file renamed F-Zero X - Expansion Kit (Japan).ndd.n64 and not work.
in the n64dd folder I put 2 files for the game: F-Zero X - Expansion Kit (Japan).ndd and a pair of the file F-Zero X - Expansion Kit (Japan).ndd file renamed F-Zero X - Expansion Kit (Japan).ndd.n64 and not work.
where is the mistake?

@unknown

You should look at this post, it all there !
https://retropie.org.uk/forum/topic/28461/translate-games-on-the-fly/10

Parallel-n64 barely works on raspberry pi and it looks like it's having segfault issues again. I would try out lr-mupen64plus-next if I were you as it is much more compatible with raspberry pi and it also offers 64DD support iirc.

@mitu Thanks for the reply