Talk:INES Mapper 004
Obsolete mutual exclusion
From Disch's notes: "when homebrewing: choose either 4-screen or WRAM. You can't have both"
Certainly a board could be constructed that had MMC3, PRG RAM at $6000-$7FFF, and extra nametable RAM at $2800-$2FFF. It's like saying "choose either WRAM or VRAM, not both, if your game's text isn't written in Japanese" because there's no such thing as NES-TNROM. --Tepples 09:31, 3 June 2012 (PDT)