NES 2.0 Mapper 332: Difference between revisions
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[[Category:Multicart mappers]] | {{DEFAULTSORT:332}}[[Category:Multicart mappers]] | ||
NES 2.0 mapper 332 is used for the ''Super 40-in-1'' | '''NES 2.0 mapper 332''' is used for the ''Super 40-in-1'' and ''Super 500-in-1'' multicarts. Its UNIF board name is '''BMC-WS'''. | ||
==PRG | ==PRG/Mirroring Register ($6000)== | ||
Mask: probably $E001 | Mask: probably $E001 | ||
D~7654 3210 | D~7654 3210 | ||
--------- | --------- | ||
. | .H.M BPPp | ||
| | |+++- PRG A14..A16 for CPU $8000-$BFFF and $C000-$FFFF | |||
| | +---- Select PRG A14 Mode | |||
| | 0: PRG A14=CPU A14 (NROM-256) | |||
| | 1: PRG A14=p (NROM-128) | |||
| +------ Select nametable mirroring mode | |||
| 0: Vertical | |||
| 1: Horizontal | |||
+-------- Select PRG A17 and CHR A16 | |||
==CHR | Reset value: $00 | ||
==CHR/Solder Pad Register ($6001)== | |||
Mask: probably $E001 | Mask: probably $E001 | ||
D~7654 3210 | D~7654 3210 | ||
--------- | --------- | ||
.... | DDMM .Cdc | ||
++++- | |||| |++- CHR A13..A14 for PPU $0000-$1FFF if MM=11 | ||
|||| +--- CHR A15 | |||
||++------ 00: CNROM-256 mode: CHR A13..A14 from CNROM latch | |||
|| 10: CNROM-128 mode: CHR A13 from CNROM latch, CHR A14 from d | |||
|| 11: NROM mode: CHR A13..A14 from dc | |||
++-------- Solder pad check | |||
Reset value: $00 | |||
The solder pads connect the latch output directly to PRG-ROM /CE. The menu code, executing from RAM, sets either bit to check whether CPU $8000-$FFFF now returns open bus, and selects a menu with different game counts depending on the result. | |||
==CNROM latch ($8000-$FFFF)== | |||
D~7654 3210 | |||
--------- | |||
.... ..CC | |||
++- CHR A13..A14 for PPU $0000-$1FFF if MM=00 | |||
Reset value: $00 | |||
Latest revision as of 14:43, 9 January 2021
NES 2.0 mapper 332 is used for the Super 40-in-1 and Super 500-in-1 multicarts. Its UNIF board name is BMC-WS.
PRG/Mirroring Register ($6000)
Mask: probably $E001 D~7654 3210 --------- .H.M BPPp | | |+++- PRG A14..A16 for CPU $8000-$BFFF and $C000-$FFFF | | +---- Select PRG A14 Mode | | 0: PRG A14=CPU A14 (NROM-256) | | 1: PRG A14=p (NROM-128) | +------ Select nametable mirroring mode | 0: Vertical | 1: Horizontal +-------- Select PRG A17 and CHR A16 Reset value: $00
CHR/Solder Pad Register ($6001)
Mask: probably $E001 D~7654 3210 --------- DDMM .Cdc |||| |++- CHR A13..A14 for PPU $0000-$1FFF if MM=11 |||| +--- CHR A15 ||++------ 00: CNROM-256 mode: CHR A13..A14 from CNROM latch || 10: CNROM-128 mode: CHR A13 from CNROM latch, CHR A14 from d || 11: NROM mode: CHR A13..A14 from dc ++-------- Solder pad check Reset value: $00
The solder pads connect the latch output directly to PRG-ROM /CE. The menu code, executing from RAM, sets either bit to check whether CPU $8000-$FFFF now returns open bus, and selects a menu with different game counts depending on the result.
CNROM latch ($8000-$FFFF)
D~7654 3210
---------
.... ..CC
++- CHR A13..A14 for PPU $0000-$1FFF if MM=00
Reset value: $00
