NES 2.0 Mapper 314: Difference between revisions
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[[Category:Multicart mappers]] | {{DEFAULTSORT:314}}[[Category:Multicart mappers]] | ||
NES 2.0 Mapper 314 is used for the ''32-in-1 Y2K'' and '' | NES 2.0 Mapper 314 is 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 unbanked 8 KiB CHR-RAM variants. | ||
==Miscellaneous register ($5000, write)== | ==Miscellaneous register ($5000, write)== | ||
| Line 7: | Line 7: | ||
D~7654 3210 | D~7654 3210 | ||
--------- | --------- | ||
U.M. .CC. | |||
| | ++- Bits 0-1 of 8 KiB CHR-ROM bank at PPU $0000-$1FFF | |||
| +------ Select nametable mirroring type | |||
| 0: Vertical | |||
| 1: Horizontal | |||
+-------- 0: UNROM | |||
1: NROM | |||
Power-on value: $ | Power-on value: $80 | ||
==PRG-ROM register ($5001, write)== | ==PRG-ROM register ($5001, write)== | ||
| Line 36: | Line 38: | ||
.... CCCC | .... CCCC | ||
++++- Bits 2-5 of 8 KiB CHR-ROM bank at PPU $0000-$1FFF | ++++- Bits 2-5 of 8 KiB CHR-ROM bank at PPU $0000-$1FFF | ||
Power-on value: $00 | |||
==UNROM Latch ($8000-$FFFF, write)== | |||
Mask: $8000 | |||
D~7654 3210 | |||
--------- | |||
.... .CCC | |||
+++- Select 16 KiB PRG-ROM bank at CPU $8000-$BFFF | |||
Power-on value: $00 | Power-on value: $00 | ||
Latest revision as of 13:54, 12 December 2020
NES 2.0 Mapper 314 is 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 unbanked 8 KiB CHR-RAM variants.
Miscellaneous register ($5000, write)
Mask: Unknown, probably $F003
D~7654 3210
---------
U.M. .CC.
| | ++- Bits 0-1 of 8 KiB CHR-ROM bank at PPU $0000-$1FFF
| +------ Select nametable mirroring type
| 0: Vertical
| 1: Horizontal
+-------- 0: UNROM
1: NROM
Power-on value: $80
PRG-ROM register ($5001, write)
Mask: Unknown, probably $F003
D~7654 3210
---------
MpPP PPPP
||++-++++- Select 32 KiB PRG-ROM bank at CPU $8000-$FFFF
|+-------- 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
CHR-ROM mode ($5002, write)
Mask: Unknown, probably $F003
D~7654 3210
---------
.... CCCC
++++- Bits 2-5 of 8 KiB CHR-ROM bank at PPU $0000-$1FFF
Power-on value: $00
UNROM Latch ($8000-$FFFF, write)
Mask: $8000
D~7654 3210
---------
.... .CCC
+++- Select 16 KiB PRG-ROM bank at CPU $8000-$BFFF
Power-on value: $00
