Paulo7x8 has created a custom PCB using a Pico that enables users to play PlayStation emulation files on the original hardware by tricking the system into thinking a disc is inserted.
Raspberry Pi Pico Emulates PlayStation 1 Games : Read more
First off the title is wrong, it emulates the optical drive as correctly stated in the article and not the games.
that enables users to play PlayStation emulation files
It's not emulation files, a iso or cue bin are exact copies of original cds.
It enables users to play cd images.
This enables the system to send ROM files directly to the original hardware.
It does not send the rom files anywhere, it allows the system to access the image file (iso, cue/bin) in the same way it would a real cd, reading tiny parts of it that fit into the PS1 memory and/or streaming the analog music through it's sound processor.