Your MAME roms directory must look like this:
Because the game is 500MB+ (due to the CHD), nobody hosts it on simple ROM sites. The .zip file for MvC2 is only ~40MB (the program), but the CHD is ~500MB. If you only download the small zip, MAME will crash with a "missing CHD" error. Marvel Vs Capcom 2 Chd Download Mame
Look for "MAME 0.2XX Full ROMs" and "MAME CHDs" via public repositories like Archive.org Why Play the Arcade Version? Your MAME roms directory must look like this:
Most classic arcade games (like Street Fighter II ) stored their data on small ROM chips. However, Marvel vs. Capcom 2 ran on the hardware, which used much larger storage—equivalent to a GD-ROM or hard drive. Look for "MAME 0
The Dreamcast port of MvC2 is arcade-perfect. Instead of fighting with NAOMI CHDs, download a GDI or CHD of the Dreamcast disc. Flycast runs this flawlessly with 4K upscaling and save states.
hardware, which MAME currently only supports in a "preliminary" state. While the game files exist within MAME ROM sets, they often run poorly or not at all on the standard MAME emulator. The "MAME vs. CHD" Confusion In arcade emulation, a CHD (Compressed Hunks of Data)