There are 2 repositories under psxdev topic.
Net Yaroze cross compiler toolchain for linux
A WIP 3d engine for the original PSX. Uses Nugget+Psyq, no libgs, and has a companion extension for Blender !
Emulates a PS1 memory card(plus controllers and more) using an ESP32
Playstation One Development Environment Setup
More convenient fixed-point arithmetic for the Sony PlayStation
PlayStation 1 Chip8 Interpreter
PlayStation 1 (PSX) MIPS assembly programming ... with Cargo builds.
C++ header files for functions that allow ripping and dumping PSX disc images.