A Playstation One CD can either be directly put into your PC via the CD-ROM drive or mounting a .BIN/.ISO file. All of these are just ways to be able to see the contents of a PS1 Disc similar to a folder of files.
| Extension | Description |
|---|---|
| .BIN | A BIN file needs a .CUE file in order to be useful, it is the raw binary contents of a PS1 disc |
| .CUE | A CUE sheet describes a .BIN file and can be mounted on a pc to reveal the file system of the disc |
| .ISO | A ISO file can be mounted on a pc to reveal the file system of the disc |
After mounting a PS1 Disc ISO/BIN/CUE you can view the file system of the Disc and you will see files with a variety of extensions, some of these extensions are standard across games and are listed in the table below.
| Extension | Description |
|---|---|
| .STR | Streaming Movie |
| .BS | MDEC Stream |
| .XA | Streaming CD-ROM Vocals |
| .RSD | 3D Model files |
| .TMD | 3D Model files (for PSYQ libraries) |
| .PMD | High speed Modelling data |
| .TOD | Animation Data |
| .HMD | Hierarchical 3D Model plus animation and other data |
| .TIM | 2D Image file |
| .SDF | Sprite Editor Project File |
| .PXL | Pixel Image Data |
| .CLT | Palette Data |
| .ANM | Animation informaton for 2D |
| .TSQ | Animation Time sequence for 2D |
| .CEL | Cell Data |
| .BGD | Background Map Data |
| .SEQ | Audio Sequence file |
| .SEP | Multi-Track Audio Sequence file |
| .VAG | Audio Wavefile |
| .VAB | Audio Source Data |
| .DA | CD-DA Data |
| .FAT | Memory Card File |
