The Sega Saturn was Sega's next console after the
Genesis Sega CD 32X Frankensteinian addon-riddled nightmare that came before it. It was notable for using quads instead of triangles, setting it apart from almost every other 3D system...and making it more than a bit difficult to develop for (especially multiplatform games).
Rather unfinished. There seems to be more differences between the two versions. Not to mention the differences only cover the Japanese and US/EU versions of the BIOS. There are so many more versions out there.
Present at hex address 0x800 in the BIOS. This is shown in the Test Menu cart as "BOOT ROM ver."
|US/EU (v1.00 and v1.01)|
|GameNavi Hi-Saturn (v1.03)|
Besides the logo and copyright changes, the version number is not listed and the background is darker.
The jingles for the BIOS intro and having no CD in the drive are different.
Surround Adjust Menu
|Japan v1.00||Japan v1.01||US/Europe|
Version 1.01 of the Japanese BIOS added "ADJUST" to the Surround Adjust menu. It was completely overhauled and made more straightforward in the US and European versions.