FxROM: Difference between revisions
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! Board || PRG ROM || PRG RAM || CHR | ! Board || PRG ROM || PRG RAM || CHR | ||
|- | |- | ||
| | |FJROM || 128, 256 KB || 8 KB || 16, 32, 64 KB ROM | ||
|- | |- | ||
| | |FKROM || 128, 256 KB || 8 KB || 128 KB ROM | ||
|} | |} | ||
Revision as of 21:29, 14 November 2010
The generic designation FxROM refers to cartridge boards made by Nintendo that use the Nintendo MMC4 mapper.
The following FxROM boards are known to exist:
| Board | PRG ROM | PRG RAM | CHR |
|---|---|---|---|
| FJROM | 128, 256 KB | 8 KB | 16, 32, 64 KB ROM |
| FKROM | 128, 256 KB | 8 KB | 128 KB ROM |
Overview
- PRG ROM size: up to 256 KB
- PRG ROM bank size: 16 KB
- PRG RAM: 8 KB plus optional battery
- CHR capacity: up to 128 KB ROM
- CHR bank size: 4 KB
- Nametable mirroring: Controlled by mapper
- Subject to bus conflicts: No
Hardware
These are the only Nintendo boards to use a specific chip dedicated to safe battery backup.
