CSO

CISO compressed ISO image
File type: Archive and compressed file
Files with cso extension are in most cases disk images saved in a common disk format for Sony Playstation. Very often used for backups of game disks. CSO format needs a special customized firmware so PSP can read them.
Found 2 different file type records with the same cso filename suffix.
What is cso file?
File type category:
Archive and compressed file
Date updated: November 24, 2023
File extension cso is used for compressed ISO images. They are often used as a medium to play PSP games. The standard medium used by Sony PlayStation Portable is Universal Media Disc (UMD).
CSO format has nine levels of compression. Higher levels mean better compression, but slower loading times of compressed ISOs.
These cso files are created by PSP ISO Compressor.
CSO CISO compressed ISO file allows playing PSP games from memory card, but PSP must have installed user customized firmware, that includes support to reading of cso files.
How to open cso file?
The *.cso file is compressed ISO image file and can be opened in SONY PlayStation Portable, that has installed user customised firmware with support to open the CSO CISO compressed ISO file.
How to convert cso file?
PSP ISO Compressor supports conversion of *.cso files in to other disk file formats.
Suggested software to open cso file:
Associated software actions with the cso file
Software applications that can open cso files:
PSP ISO Compressor (Microsoft Windows)
Prometeus (Apple macOS / Mac OS X)
JPCSP (Multiplatform)
Apps designed for playing cso files:
PPSSPP (Multiplatform)
Software apps that create cso files:
PSP ISO Compressor (Microsoft Windows)
Prometeus (Apple macOS / Mac OS X)
Software apps that convert cso files:
PSP ISO Compressor (Microsoft Windows)
Yet Another CSO Compressor (Microsoft Windows)
Prometeus (Apple macOS / Mac OS X)
Software apps that import cso files:
PPSSPP (Multiplatform)
Software apps that extract cso files:
PSP ISO Compressor (Microsoft Windows)
Prometeus (Apple macOS / Mac OS X)
Compiled Shader Object
File type category:
3d graphics, CAD-CAM-CAE file
Date updated: September 9, 2024
The cso file extension is related to the Compiled Shader Object format. CSO is compiled object, written in High Level Shader Language (hlsl file extension), developed by Microsoft.
The cso files are created with Microsoft Visual Studio.
How to open cso file?
Use Microsoft Visual Studio to work with *.cso files.
Suggested software to open cso file:
Associated software actions with the cso file
Software apps that create cso files:
DirectX (Microsoft Windows)
Microsoft Visual Studio (Multiplatform)
Software applications that handle other tasks involving cso files:
DirectX (Microsoft Windows)
Microsoft Visual Studio (Multiplatform)