NES 2.0 Mapper 314
NES 2.0 Mapper 314 denotes the PB011003-3x1 PCB, used for the 32-in-1 Y2K, 64-in-1 Y2K and 76-in-1 Y2K multicarts. Its UNIF board name is BMC-64in1NoRepeat. It exists in both CHR-ROM and CHR-RAM variants.
Mask: Unknown, probably $F003
D~7654 3210
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U.M. .CCP
| | ||+- PRG A21
| | ++- Bits 0-1 of 8 KiB CHR bank at PPU $0000-$1FFF
| +------ Select nametable mirroring type
| 0: Vertical
| 1: Horizontal
+-------- 0: UNROM
1: NROM
Power-on value: $80
Mask: Unknown, probably $F003
D~7654 3210
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MpPP PPPP
||++-++++- Select 32 KiB PRG-ROM bank at CPU $8000-$FFFF (PRG A20..A15)
|+-------- Select 16 KiB PRG-ROM bank at CPU $8000-$BFFF and
| CPU $C000-$FFFF if M==0
+--------- Select PRG banking mode
0: NROM-128
1: NROM-256
Power-on value: $43
Mask: Unknown, probably $F003
D~7654 3210
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.... CCCC
++++- Bits 2-5 of 8 KiB CHR bank at PPU $0000-$1FFF
Power-on value: $00
Mask: $8000
D~7654 3210
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.... .CCC
+++- Select 16 KiB PRG-ROM bank at CPU $8000-$BFFF
Power-on value: $00