Whenever I start a project of an emulator this is my first challenge, read the game, game boy games I usually create a vector of uint8_t by knowing that game of that time are 8-Bits. I recently started developing a 64-bit emulator, but this time it's a more powerful console, and probably the file system should look like a disk image to store all that data. So how can I find out what kind of dice that game is about?