While reverse engineering AlphaWaves/Continuum (https://www.mobygames.com/game/939/continuum/) i have found out that the game files were compressed. I disassembled the algorithm and found other games of Infogrames Europe SA that uses the same compression method. There is no real use for gamers but maybe that helps people like me have an easier start in reversing/modding some of these games

• i created a ModdingWiki-Page with some CC0/CC1 infos: https://moddingwiki.shikadi.net/wiki/Alpha_Waves, https://moddingwiki.shikadi.net/wiki/CC1_Format
• My testproject for reversing findings https://github.com/LowLevelMahn/alpha_waves_loader
• ported the original 16bit DOS uncompression code (https://github.com/LowLevelMahn/alpha_waves_loader/blob/fc3269c686726227f3f5c7b044d4bc631ad2e87f/ae.asm#L970) by creating my own simple emulator to convert the asm semantics directly to C/C++: https://github.com/LowLevelMahn/alpha_waves_loader/blob/main/read_some_file_sub_4/original_port.cpp
• did a cleanup and created a command line tool for uncompressing these files: https://github.com/LowLevelMahn/alpha_waves_loader/tree/main/tools/uncompress_cc

• converted the orginal assembler code to semantical identical asm-like functions and then ported step by step - very slow and carefull :)
• tested my uncompression by hooking into Dosbox - overwriting the original code - doing regression tests and even run the game itself with my code
• i tried to keep the algorithm as picky as possible to detected any fails or loss of data etc. (any wrong change will normaly leads to endless-recursion or other fails very fast)

• Its a unit-test to test my reversed algorithm to uncompression CC0/CC1 files
• the unit-test gets compressed and uncompressed reference data from the included test_data.bin file (given by commandline) and just uncompress and compare the result
• the test_data.bin file contains compressed game data but is useless without knowing which part is from what game, unuseable for anything beside this test
• the unit-test does not contain the file-handling stuff for real CC0/CC1 files but only the uncompression-algorithm
• C++14, CMake - compiles/runs on Windows/Linux with clang,gcc,cl,CLion,QtCreator,MSVC,...

• Call of Cthulhu: Shadow of the Comet (ES): https://www.mobygames.com/game/132/call-of-cthulhu-shadow-of-the-comet/, released 1994 on DOS
• Alone in the Dark: https://www.mobygames.com/game/325/alone-in-the-dark/, released 1992 on DOS
• Eternam: https://www.mobygames.com/game/1368/eternam, release 1992 on DOS
• Disney's Beauty and the Beast: https://www.mobygames.com/game/46990/disneys-beauty-and-the-beast/, release 1992 on DOS
• 7 Colors: https://www.mobygames.com/game/11468/7-colors/, release 1991 on DOS
• Advantage Tennis: https://www.mobygames.com/game/4961/advantage-tennis/, release 1991 on DOS
• Neptune: https://www.mobygames.com/game/4314/operation-neptune/, release 1991 on DOS
• Alpha Waves: https://www.mobygames.com/game/939/continuum/, released 1990 on DOS
• Mystical: https://www.mobygames.com/game/33025/mystical/, release 1990 on DOS
• The Light Corridor: https://www.mobygames.com/game/6904/the-light-corridor/, release 1990 on DOS
• North & South: https://www.mobygames.com/game/6926/north-south/, release 1990 on DOS
• Murders in Space: https://www.mobygames.com/game/4803/murders-in-space/, release 1990 on DOS
• Full Metal Planet: https://www.mobygames.com/game/6538/full-metal-planet/, release 1990 on DOS
• Wild Life: https://www.mobygames.com/game/54191/wild-life/, release 1990 on DOS
• Murders in Venice: https://www.mobygames.com/game/4793/murders-in-venice/, release 1990 on DOS
• Cool Ball, Pop-Up: https://www.mobygames.com/game/54514/cool-ball/, release 1990 on DOS
• Extase: https://www.mobygames.com/game/23277/extase/, release 1990 on DOS
• Hostage: Rescue Mission, Operation Jupiter: https://www.mobygames.com/game/6939/hostage-rescue-mission/, released 1989 on DOS
• Drakkhen: https://www.mobygames.com/game/1969/drakkhen/, release 1989 on DOS
• The Quest for the Time-Bird: https://www.mobygames.com/game/6931/the-quest-for-the-time-bird/, release 1989 on DOS
• Tintin On The Moon: https://www.mobygames.com/game/9047/tintin-on-the-moon/, release 1989 on DOS
• Safari Guns: https://www.mobygames.com/game/14723/safari-guns/, release 1989 on DOS
• Shufflepuck Cafe: https://www.mobygames.com/game/3507/shufflepuck-cafe/, release 1989 on DOS
• Chicago 90: https://www.mobygames.com/game/1720/chicago-90/, release 1989 on DOS
• Fire!: https://www.mobygames.com/game/54100/fire/, release 1989 on DOS
• Chamber of the Sci-Mutant Priestess, KULT: The Temple of Flying Saucers, Kult: https://www.mobygames.com/game/562/chamber-of-the-sci-mutant-priestess/, * released 1989 on DOS
• Teenage Queen: https://www.mobygames.com/game/6224/teenage-queen/, release 1988 on DOS
• Highway Patrol II: https://www.mobygames.com/game/14208/highway-patrol-ii/, release 1988 on DOS maybe more...

Datailed file list: https://github.com/LowLevelMahn/alpha_waves_loader/blob/main/tools/uncompress_cc/known_files.txt

search for byte pattern of the uncompression code

BF 01 03  mov di, 0x301
33 C0     xor ax, ax
F3 AB     rep stosw word ptr es:[di], ax
5F        pop di
07        pop es

use ripgrep

https://github.com/BurntSushi/ripgrep/releases - ripgrep-13.0.0-x86_64-pc-windows-msvc.zip no installation needed inside the zip is a rg.exe file, a grep like search program that can also search for byte patterns

use it on the command line to find files with the relevant pattern

prints on console

rg.exe -l --binary -uuu (?-u:\xBF\x01\x03\x33\xC0\xF3\xAB\x5F\x07) "c:\all_your_games_folder"

redirects the output to c:\temp\out.txt

rg.exe -l --binary -uuu (?-u:\xBF\x01\x03\x33\xC0\xF3\xAB\x5F\x07) "c:\all_your_games_folder" > c:\temp\out.txt