NES 2.0 Mapper 312
NES 2.0 Mapper 312 is used for Kaiser’s bootleg version of Highway Star. Its UNIF board name is UNL-KS7013B.
- CPU $8000-$BFFF: Switchable 16 KiB PRG-ROM bank
- CPU $C000-$FFFF: Fixed 16 KiB PRG-ROM bank #7
- PPU $0000-$1FFF: Unbanked 8 KiB of CHR-RAM
Mask: $E000
D~7654 3210
---------
.... .PPP
+++- Select 16 KiB PRG-ROM bank at CPU $8000-$BFFF
Mask: $8000
D~7654 3210
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.... ...M
+- Select nametable mirroring type
0: Vertical
1: Horizontal