digplanet beta 1: Athena
Share digplanet:

Agriculture

Applied sciences

Arts

Belief

Business

Chronology

Culture

Education

Environment

Geography

Health

History

Humanities

Language

Law

Life

Mathematics

Nature

People

Politics

Science

Society

Technology

Compressed ISO
Filename extension .cso
Internet media type application/x-compressed-iso
Developed by Booster
Type of format Disk image
Container for ISO images

.CSO is a compression method for the ISO image format. It is used to compress dumped PlayStation Portable UMD games, and is an alternative to the .DAX compression method. It is also sometimes called "CISO".

It was the first compression method for ISO. It was created so that more memory space can be saved. Booster created the first code; it was later optimized for better compression. Other formats tried to replace it by fixing up certain issues such as lag in games, such as .DAX and .JSO. However at the time, the popular application homebrew "DevHook" used CSO. .DAX needed another loader, and .JSO was basically unused.

CSO provides nine levels of compression. While the highest levels of compression can introduce slowdown and lengthy load-times in software which relies heavily on disc streaming, even the lower levels are capable of substantial compression.[1] This is partially due to the data layout of a UMD, though more frequently due to the use of Dummy Files as both an anti-piracy tool and a means to more optimally lay the data out physically on the disc.

In addition to being used for compressing PlayStation Portable UMD games, the PSP port of PicoDrive supports compressed Sega Mega-CD disc images in the CSO format.[2]

References[edit]

  1. ^ "CSO compression". Archived from the original on 23 February 2008. Retrieved 2008-02-28. 
  2. ^ "PicoDrive for PSP v1.35b - bugfixes and major feature added". Archived from the original on 12 December 2007. Retrieved 2007-12-11. 

External links[edit]



Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/.CSO — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.

652809 news items

Chicago Classical Review

Chicago Tribune
Fri, 17 Apr 2015 09:02:39 -0700

Trifonov scored a sensational Chicago debut with the CSO in 2012 (when he made the Tchaikovsky First Piano Concerto gallop anew), and each subsequent appearance here has confirmed his emergence as one of the biggest and brightest talents among ...

Direct Marketing News

Direct Marketing News
Fri, 17 Apr 2015 03:07:30 -0700

B2B marketing executives rocking marketing automation systems are too often like motorists driving Ferraris down the Autobahn at 50 miles per hour, says Jim Dickie, managing partner of CSO Insights (CSO, as in chief sales officer). Despite the recent ...

CSO Online

CSO Online
Fri, 17 Apr 2015 05:45:00 -0700

Attacks against industrial control systems doubled last year, according to a new report from Dell. "We have over a million firewalls sending data to us on a minute-by-minute basis," said John Gordineer, director of product marketing for network ...

CSO Online

CSO Online
Thu, 16 Apr 2015 14:22:30 -0700

Wikileaks has published a searchable database of thousands of emails and documents from Sony Pictures Entertainment that were leaked in late 2014 after the studio was attacked by hackers. The database is the first time the information, which made up ...
 
CSO Australia
Thu, 16 Apr 2015 19:48:45 -0700

More than two dozen U.S. government websites should be urgently upgraded to use encryption, as whistleblowers are potentially at risk, according to the American Civil Liberties Union. At least 29 websites that can be used for reporting abuse and fraud ...
 
CSO Online
Thu, 16 Apr 2015 10:48:45 -0700

The adoption of cloud services continues to accelerate, meaning organizations are not only more comfortable with, but quickly moving their data and services to cloud environments. According to Gartner, by 2016, cloud computing will become the majority ...

The Chicago Maroon

The Chicago Maroon
Mon, 13 Apr 2015 22:03:45 -0700

After all, when a conductor like Bernard Haitink, one of the great Mahler interpreters of our time, joins forces with the CSO, itself a first-rate Mahler orchestra, the result is sure to be dynamic. Not only does the CSO have a special relationship to ...

Cincinnati.com

Cincinnati.com
Fri, 17 Apr 2015 06:30:00 -0700

As long as the Lumenocity concert is going to attract a crowd to Music Hall ("Lumenocity to start charging, cut crowd size" April 12), why not offer for sale the seats inside Music Hall on closed-circuit TV? The benefits: chairs you don't have to carry ...
Loading

Oops, we seem to be having trouble contacting Twitter

Support Wikipedia

A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia. Please add your support for Wikipedia!

Searchlight Group

Digplanet also receives support from Searchlight Group. Visit Searchlight