INES Mapper 063: Difference between revisions
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iNES Mapper 063 is used for NTDEC's "Powerful 250-in-1" multicart (PCB ID '''TH2291-3''') and its pirate-of-a-pirate equivalent, the "Hello Kitty 255-in-1" (PCB ID '''CH-011''') multicart. The address-latch-based bankswitching hardware supports only NROM-128 and NROM-256 games. CHR data is stored in 8 KiB of unbanked CHR-RAM that can be write-protected. | {{DEFAULTSORT:063}}[[iNES Mapper 063]] is used for NTDEC's "Powerful 250-in-1" multicart (PCB ID '''TH2291-3''') and its pirate-of-a-pirate equivalent, the "Hello Kitty 255-in-1" (PCB ID '''CH-011''') multicart. The address-latch-based bankswitching hardware supports only NROM-128 and NROM-256 games. CHR data is stored in 8 KiB of unbanked CHR-RAM that can be write-protected. | ||
==Address latch ($8000-$FFFF, write)== | ==Address latch ($8000-$FFFF, write)== | ||
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==See also== | ==See also== | ||
* [//forums.nesdev.org/viewtopic.php?t=19197 Dumping thread] | * [//forums.nesdev.org/viewtopic.php?t=19197 Dumping thread] | ||
[[Category:iNES Mappers | [[Category:Discrete logic mappers]][[Category:iNES Mappers]][[Category:Multicart mappers]] | ||
Revision as of 23:18, 5 October 2019
iNES Mapper 063 is used for NTDEC's "Powerful 250-in-1" multicart (PCB ID TH2291-3) and its pirate-of-a-pirate equivalent, the "Hello Kitty 255-in-1" (PCB ID CH-011) multicart. The address-latch-based bankswitching hardware supports only NROM-128 and NROM-256 games. CHR data is stored in 8 KiB of unbanked CHR-RAM that can be write-protected.
Address latch ($8000-$FFFF, write)
A~FEDC BA98 7654 3210
-------------------
1... .CBB BBBB BbPM
||| |||| |||+- Select nametable mirroring type
||| |||| ||| 0: Vertical
||| |||| ||| 1: Horizontal
||| |||| ||+-- Select PRG banking mode
||| |||| || 0: NROM-128, CPU A14 replaced with b
||| |||| || 1: NROM-256, CPU A14 unmodified
|++-++++-++--- Select 16 KiB PRG-ROM bank (A14..A21)
+------------- Select CHR-RAM write-protection
0: Disabled, CHR-RAM writable
1: Enabled, CHR-RAM write-protected
For the menu code to correctly detect the number of games, selecting unpopulated PRG-ROM banks must result in open bus rather than wrapped addresses.
