NES 2.0 Mapper 450

NES 2.0 Mapper 450 denotes the VRC2-based 晶太 (Jingtai) YY841157C multicart circuit board used for J.Y. Company's 1996 Super HiK 4-in-1 - 新系列瑪莉13代組合卡 multicart. The VRC2 clone's A0/A1 inputs are connected to CPU A0/A1; its µ-write interface is used to form an additional outer bank register at CPU $6000-$6FFF. It can be seen as the oversize VRC2 equivalent of INES Mapper 047.

Outer Bank Register ($6000-$6FFF, write)

D~[.... ..BB]
          ++- PRG/CHR A18..A17