psp-jsA PSP emulator in TypeScript

High-level emulation of the PSP that runs in the browser. It loads and decrypts real game images and runs them without a BIOS.

Ridge Racer, in-game replay

High-level emulation

Runs without a PSP BIOS. It implements the PSP's system calls in TypeScript.

It decrypts the KIRK EBOOT, reads the ISO or PBP, and runs the real Allegrex CPU and VFPU, drawing the GE over WebGL.

ATRAC3+ audio decodes through a bundled ffmpeg, and PSMF video through the browser's WebCodecs.

Game saves persist in the browser, whole-machine save states export to a file, and the same core also runs headless under Node.