Finding the correct BIOS files for this through search engines and forums is a pain in the ass, so I figured I’d post up a zip I’ve compiled of the correct OpenEmu Sega Saturn BIOS files needed for US, EU and JPN region games. The Saturn was discontinued in North America in early 1998, less than 3 years after it's launch. Select the bios files of the console you want to play from the list below.
In North America however, the system underpreformed. In Japan, the system was successful, selling over 8 million units during it's 7 year lifespan, even beating the PlayStation when it was first released. So you can think of it as both Meta Data for the inserted game and also as the starting point for the CPU.
The announcement was met with widespread controversy angering many developers in development of Saturn titles and several major retailers some of who would ultimately forgo stocking the console in their stores. After the Sega Saturn’s internal BIOS code has been executed the CPU will jump to a location in the IP.BIN which will start the setup for game specific settings and meta data such as the game name and version information. The US launch of the console was announced live at the first E3 press conference on May 11, 1995, where the console was announced to be available the very same day. The system would initially launch on Novemin Japan. The console was built using a 32-bit hardware architecture, with the initial intent to excel at rendering two dimensional sprites however this was changed to favor rendering of three-dimensional polygons due to the potential for steep competition from the PlayStation and Nintendo 64. The Sega Saturn ( セガサターン, Sega Satān ?) is a fifth generation video game console, that was originally released on November 22nd, 1994.