Modify Playstation 1 ROMs?

fa
- in PlayStation
1

I play some PS1 ROMs on my Raspberry Pi 4 and also deal with Unity and Blender.

I would like to dig deeper into game design and therefore modify existing games. Initially, purely graphic enhancements. I.e. Edit textures first, maybe later. Integrate better 3D models, if the mechanics allow it.

For extensive mods I have often read something about psxdev.net. But does anyone already have experience how and with what I can specifically access the PS1 ROMs content in order to edit graphic content and test the game with it?

fa

Thank you for the detailed explanation. It was supposed to be too simple.