RetroPie-joystick-selection VS RetroPieBIOS

In Retropie I downloaded a controller script that allows you to pick which controller is player 1-4 for each system from all the controllers connected. So for example my arcade games use 1-4(joysticks), N64 uses port 5 and 6(N64 controllers) as player 1 and 2, SNES and NES used 7 and 8(SNES controllers) for player 1 and 2. That works flawlessly for all my systems. The issue though is I can select 9 and 10 as my player 1 and 2 for my sega games but the controllers don’t work at all, not even in the Retroarch menu but they do in ES. If I swap the physical order of the sega controllers and SNES controllers, the sega controllers will work and the SNES ones won’t. So it seems like 8 is the cutoff for me right now.

You might be able to do this with meleu's Joystick Selection script, available either standalone or as part of RetroPie-Extra. I would try, set the gamepads to always use players 1 and 2, then let the arcade controls remain default/unset. So when the gamepads are connected they'll take priority, and then when they aren't, I think the arcade controls should still work in place.

Try this optional package. It lets you assign controllers to specific ports: https://github.com/meleu/RetroPie-joystick-selection

I've never done a conversion like yours but I think there's a joystick function that tells the controllers to always be in a specified order. Perhaps that would help you? https://github.com/meleu/RetroPie-joystick-selection

Check in the rpie setup there should be a joystick script that can set the order etc. Its created by dev Meleu If not get and apply from here https://github.com/meleu/RetroPie-joystick-selection

Over in the retro-pi world there was a utility called Joystick Select that would let you define per-emulator controllers. For example, when launching NES if you have your NES controller plugged in, it would default P1 to that, otherwise it would use the default usb-encoder

Have you tried this ? :https://github.com/meleu/RetroPie-joystick-selection

I tried using the bios from this site: https://github.com/archtaurus/RetroPieBIOS,but they didn't work, could someone point me to a site that has the bios I need?

And for the BIOS file, you can download it from here : https://github.com/archtaurus/RetroPieBIOS