NES 2.0 Mapper 350: Difference between revisions
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[[Category:Multicart mappers]][[Category:Mappers with CHR RAM]] | {{DEFAULTSORT:350}}[[Category:Multicart mappers]][[Category:Mappers with CHR RAM]] | ||
NES 2.0 mapper 350 is used for a ''Super 15-in-1 Game Card'' multicart. Its UNIF board name is '''BMC-891227'''. | NES 2.0 mapper 350 is used for a ''Super 15-in-1 Game Card'' multicart. Its UNIF board name is '''BMC-891227'''. | ||
| Line 20: | Line 20: | ||
||| 1: Second 512 KiB (selectable only in UNROM mode) | ||| 1: Second 512 KiB (selectable only in UNROM mode) | ||
|++------- Select PRG-ROM banking mode | |++------- Select PRG-ROM banking mode | ||
| 0: NROM-128 (inner bank bit 0 replaced with CPU A14) | | 0: NROM-128 | ||
| 1: NROM-256 (inner bank bit 0 replaced with CPU A14) | |||
| 2: UNROM (inner bank fixed to #7 at CPU $C000-$FFFF) | | 2: UNROM (inner bank fixed to #7 at CPU $C000-$FFFF) | ||
| 3: same as 2 | | 3: same as 2 | ||
| Line 36: | Line 36: | ||
--------- | --------- | ||
.... .BBB | .... .BBB | ||
+++- Select 16 KiB | +++- Select 16 KiB inner PRG-ROM bank at CPU $8000-$BFFF/$C000-$FFFF | ||
=Similar Mappers= | =Similar Mappers= | ||
[[NES 2.0 Mapper 337]] is a variant for smaller ROM sizes of this mapper. | [[NES 2.0 Mapper 337]] is a variant for smaller ROM sizes of this mapper. | ||
Latest revision as of 21:14, 27 May 2020
NES 2.0 mapper 350 is used for a Super 15-in-1 Game Card multicart. Its UNIF board name is BMC-891227.
Banks
- CPU $6000-$7FFF: 8 KiB fixed PRG-ROM bank #1
- CPU $8000-$BFFF: 16 KiB switchable PRG-ROM bank
- CPU $C000-$FFFF: 16 KiB switchable PRG-ROM bank
- PPU $0000-$1FFF: 8 KiB of unbanked CHR-RAM
Registers
Outer Bank Register ($8000-$BFFF)
Mask: $C000
D~7654 3210
---------
MPPB B...
|||+-+---- Select 128 KiB outer PRG-ROM bank
||+------- Chip select
||| 0: First 512 KiB
||| 1: Second 512 KiB (selectable only in UNROM mode)
|++------- Select PRG-ROM banking mode
| 0: NROM-128
| 1: NROM-256 (inner bank bit 0 replaced with CPU A14)
| 2: UNROM (inner bank fixed to #7 at CPU $C000-$FFFF)
| 3: same as 2
+--------- Select nametable mirroring type
0: Vertical
1: Horizontal
CHR-RAM is write-protected in the NROM modes.
Inner Bank Register ($C000-$FFFF)
Mask: $C000
D~7654 3210
---------
.... .BBB
+++- Select 16 KiB inner PRG-ROM bank at CPU $8000-$BFFF/$C000-$FFFF
Similar Mappers
NES 2.0 Mapper 337 is a variant for smaller ROM sizes of this mapper.
