Happy emulating! 🕹️
: Some BIOS-dependent games from the 0.78 era require Compressed Hunks of Data (CHDs) . These are large disk images that must be placed in a subfolder named exactly like the parent ROM zip file.
If you are setting up an emulation system based on the MAME 0.78 core, there are several key BIOS files you will likely need if you are not using a Non-Merged set. These files are usually placed in the same folder as the game ROMs. Common filenames (often case-sensitive) include: