NES 2.0 Mapper 429: Difference between revisions

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[[NES 2.0 Mapper 429]] has been earmarked for a project by Milowork on 2021-11-10. If no updates are present within three years, it should be assumed to be available for other purposes.
[[NES 2.0 Mapper 429]] is for Milowork FCFC1 flash cartridge. There is some doujin game in progress using this mapper.
 
== Overview ==
* PRG ROM size: 512 KB
* PRG ROM bank size: 32 KB
* PRG RAM: None
* CHR capacity: 32 KB RAM, optional battery-backup or FeRAM
* CHR bank size: 8 KB
* Nametable [[mirroring]]: vertical or horizontal selected by switch
* Subject to [[bus conflict]]s: No
 
== Registers ==
=== Bank select ($8000-$FFFF) ===
7  bit  0
---- ----
xxPP PPCC
  || ||||
  || ||++- Select 8 KB CHR RAM bank for PPU $0000-$1FFF, initial bank 0
  ++-++--- Select 32 KB PRG ROM bank for CPU $8000-$FFFF, initial bank 1

Revision as of 10:46, 13 November 2021

NES 2.0 Mapper 429 is for Milowork FCFC1 flash cartridge. There is some doujin game in progress using this mapper.

Overview

  • PRG ROM size: 512 KB
  • PRG ROM bank size: 32 KB
  • PRG RAM: None
  • CHR capacity: 32 KB RAM, optional battery-backup or FeRAM
  • CHR bank size: 8 KB
  • Nametable mirroring: vertical or horizontal selected by switch
  • Subject to bus conflicts: No

Registers

Bank select ($8000-$FFFF)

7  bit  0
---- ----
xxPP PPCC
  || ||||
  || ||++- Select 8 KB CHR RAM bank for PPU $0000-$1FFF, initial bank 0
  ++-++--- Select 32 KB PRG ROM bank for CPU $8000-$FFFF, initial bank 1
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