The .chd (Compressed Hunks of Data) extension is a lossless compression format originally developed for the (Multiple Arcade Machine Emulator) project.
. Unlike modern "patches" that are downloaded separately, a "Revision" is a whole new pressing of the physical disc released later in the game's life cycle that includes bug fixes or minor adjustments. Metal Gear Solid -Spain- -Disc 1- -Rev 1-.chd
Because the file is rare, fake "Rev 1" conversions abound (users simply renaming a US Rev 0 to "Spain - Rev 1"). MAME The
Digital Hermeneutics Lab (Anonymized)
Metal Gear Solid, developed and published by Konami, is a stealth action game released in 1998 for the PlayStation. It is directed by Hideo Kojima and follows the story of Solid Snake, a soldier who infiltrates a terrorist organization to neutralize a threat to global security. The game received critical acclaim for its engaging storyline, complex characters, and innovative gameplay mechanics. Because the file is rare, fake "Rev 1"
The .chd (Compressed Hunks of Data, MAME/MESS format) is not an emulator; it is a lossless compression schema that stores CD-ROMs as a single file with hashed error correction. Choosing .chd over .bin/.cue or .iso is an ideological act: