cant speak for the standalone pcsx-rearmed so someone else could probly chip in there as for the libretro build its possible to generate game specific overides both for core settings and controller remaps via the quick menu section of emulators menu i use the libretro build myself for specific core settings for certan games as analogue input breaks certan games and enhanced resolution brings in graphic glitches on some too so i have specific configs for these games via the override feature

Well, i must say, i suddenly found a solution that works for now.
The analog stick is working, D-pad still no response.
Anyway, i changed the controller settings but did not change the up, down, left right. Just left it as the default values.
UP : up
DOWN: down
LEFT: left
RIGHT: right

I only have changed the buttons. this setting seems to work.

I had a bit of the same issue.
If i understand correctly, then when you press the "escape" key on keyboard the menu pops up.
What i did, i assigned in the controller setup a unused key, like the right thumbs key for example. I used the LR3 button to let it assign. In my case it made the "LR3 \XAC" key.
I saved the setting to global.
edited the file " /opt/retropie/configs/psx/pcsx/pcsc.cfg"
Changed the line "bind \xAC = LR3" to "bind \xAC = Enter Menu"
Saved file restart game. Then pressing the Right thumb opened the menu.

ok never mind i found my mistake. the file extension was wrong. i had ".BIN" and it has to be ".bin" then the .sbi file will work correctly.

@ignatius Not really the place to ask, since the emulator is not developed or directly supported by the RetroPie team. You should try asking on the pcxs-rearmed project forums, this forum is specifically for RetroPie related questions.

@boredgamelad note that the current retropie image/binary updates won't neccesarily include that fix, but yeah from source definitely will. i think if you still get the issue after a source update it might be worth logging an issue here: https://github.com/libretro/pcsx_rearmed/issues

i'll try and recreate it soon also!

@BuZz No problem, I understand you perfectly.

@BuZz Thank you Buzz. I actually just figured it out by gaining access to Retroarch's quick menu using the in-game hotkey, then fiddling around in there till I found something mentioning Bios.

But anyway, everything works now, except for reicast. But thank you all the same.

@O-M-A-A I think the game itself has a problem.. No one able to play the game..

Hi! I have same problem.
For restart pcsx I use hotkey (Select + X) with psx controller.

@mrbwa1 I know, but when you turn the resolution down, people claim it works. I'll use a display with a very low resolution so I'm fine with turning the game's resolution down. But thanks anyway :)

Thanks a ton. I didn't even have to do the bindings because the disk control options are easily accessible in the retroarch quick menu. I found it by accident when I tried to figure out how to do it; turns out I was pretty close... The only thing I missed was that I was supposed to swap the disk input in between ejecting and closing the virtual tray.

Thanks so much for helping, you managed to find the missing pieces to my puzzle.