SEGA SATURN DEVELOPER'S MANUAL

Address: All addresses defined in VDP2 are relative addresses in VDP2. The first address of VDP2 starts at 5E00000H. For example, VRAM is located at the relative address 000000H and starts from the absolute address 5E00000H. The TV screen mode register is located at the relative address 180000H and is set to the absolute address 5F80000H.