INES Mapper 088

 Example Games:
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 Quinty (J)
 Namcot Mahjong 3
 Dragon Spirit - Aratanaru Densetsu
 

This is the same as Mapper206 with the following exception:

• CHR support is increased to 128KB by connecting PPU's A12 line to the CHR ROM's A16 line.

For example, mask the CHR ROM 1K bank output from the mapper by $3F, and then OR it with $40 if the PPU address was >= $1000.

Consequently, CHR is split into two halves. $0xxx can only have CHR from the first 64K, $1xxx can only have CHR from the second 64K.