You'll already need the 'neogeo.zip' BIOS to run games in the first place, but the 'debugbios.zip' BIOS is required to properly access these features.
Search sites like Console Passion if that's what you fancy.įor emulators, the BIOS is a. On the real Neo Geo hardware, this entails replacing the BIOS chip with a modified one, which requires a soldering iron and the possible risk of futzing up your console, so tread carefully. To access any of these debug options in Metal Slug 2 through 5, you will need a Neo Geo Debug BIOS. The debug menu is where the magic happens! If it weren't for this (and the tile viewer, I suppose), we wouldn't have access to most of the unused rubbish hidden inside the games.
