Compressed Hunks of Data - Revision history

Anonymoususer852: Link change for MAME.

2025-08-01T17:50:53Z

Link change for MAME.

Anonymoususer852: /* Links */ Typo fix, add link to chdman docs.

2025-07-31T21:26:53Z

‎Links: Typo fix, add link to chdman docs.

Anonymoususer852: Create page using Squashfs as base template.

2025-07-31T21:21:25Z

Create page using Squashfs as base template.

New page

{{FormatInfo
|formattype=electronic
|subcat=Disk Image Formats
|extensions={{ext|chd}}
|released=2007<ref>[https://github.com/mamedev/mame/commit/7b77f1218624ea26dbb2efd85a19f795f5d4e02e Initial checkin of MAME 0.121. - GitHub]</ref>
}}
'''CHD''' (Compressed Hunks of Data) is a lossless compression format originally developed for [https://www.mamedev.org MAME (which in turn originally stood for Multiple Arcade Machine Emulator)], for the hard-drive contents of certain arcade machines. It has since been used in several other emulators as a means of storing CD-ROM game data. For CD-based games, it compresses the contents of a disc image (e.g. <code>.cue</code> + <code>.bin</code> files) to a single <code>.chd</code> file.<ref>[https://retropie.org.uk/docs/CHD-files CHD files - RetroPie Docs]</ref>

== Examples ==
Create a chd from cue file (bin file must also be accessible):
chdman createcd -i example.cue -o example.chd

== Links ==
* [https://www.mamedeev.org MAME project page]
* [https://github.com/mamedev/mame/blob/master/src/lib/util/chd.h chd.h - GitHub]

== References ==
<references/>

@@ Line 5: / Line 5: @@
 |released=2007<ref>[https://github.com/mamedev/mame/commit/7b77f1218624ea26dbb2efd85a19f795f5d4e02e Initial checkin of MAME 0.121. - GitHub]</ref>
 }}
-'''CHD''' (Compressed Hunks of Data) is a lossless compression format originally developed for [https://www.mamedev.org MAME (which in turn originally stood for Multiple Arcade Machine Emulator)], for the hard-drive contents of certain arcade machines. It has since been used in several other emulators as a means of storing CD-ROM game data. For CD-based games, it compresses the contents of a disc image (e.g. <code>.cue</code> + <code>.bin</code> files) to a single <code>.chd</code> file.<ref>[https://retropie.org.uk/docs/CHD-files CHD files - RetroPie Docs]</ref>
+'''CHD''' (Compressed Hunks of Data) is a lossless compression format originally developed for [[MAME]], for the hard-drive contents of certain arcade machines. It has since been used in several other emulators as a means of storing CD-ROM game data. For CD-based games, it compresses the contents of a disc image (e.g. <code>.cue</code> + <code>.bin</code> files) to a single <code>.chd</code> file.<ref>[https://retropie.org.uk/docs/CHD-files CHD files - RetroPie Docs]</ref>
 == Examples ==

@@ Line 12: / Line 12: @@
 == Links ==
-* [https://www.mamedeev.org MAME project page]
+* [https://www.mamedev.org MAME project page]
 * [https://github.com/mamedev/mame/blob/master/src/lib/util/chd.h chd.h - GitHub]
 == References ==
 <references/>