Unmap PPU register mirroring until we have replaced map with a real memory map
Unmap PPU register mirroring until we have replaced map with a real memory map

git-svn-id: 1654030fd240e109c2b66ba9797476e747083570@590 96dfbd92-d197-e211-9ca9-00110a534b34

RyuKojiro/v6502