The BIOS file ( coh1002m.zip ) should be in the same folder as your game zip (e.g., doapp.zip ) or in the main roms directory. 🔍 Technical Background
Depending on where you are asking for help (Reddit, Discord, or a technical forum), here are two ways to "properly" post this issue to get a quick fix: Option 1: The "Technical Support" Post
file is a "no dump," having the rest of the BIOS set is critical for the game to boot. Verify ROMset Version -verifyroms command in the MAME Command Line
microcontroller chip found on the arcade boards of several Capcom and Taito games.
