參考資料：
http://nesdev.com/6502.txt
http://wiki.nesdev.com/w/index.php/Nesdev_Wiki
http://www.6502.org/tutorials/6502opcodes.html
https://www.masswerk.at/6502/6502_instruction_set.html
| Range | Size | Device |
|---|---|---|
| $0000-$07FF | $0800 | 2KB internal RAM(zero page is $0000-$00FF) |
| $0800-$0FFF | $0800 | Mirrors of $0000-$07FF |
| $1000-$17FF | $0800 | Mirrors of $0000-$07FF |
| $1800-$1FFF | $0800 | Mirrors of $0000-$07FF |
| $2000-$2007 | $0008 | NES PPU registers |
| $2008-$3FFF | $1FF8 | Mirrors of $2000-2007 (repeats every 8 bytes) |
| $4000-$4017 | $0018 | NES APU and I/O registers |
| $4018-$401F | $0008 | APU and I/O functionality that is normally disabled |
| $4020-$FFFF | $BFE0 | Cartridge space: PRG ROM, PRG RAM, and mapper registers |
| $6000-$7FFF | $1FFF | Battery Backed Save or Work RAM |
| $8000-$FFFF | $7FFF | Usual ROM, commonly with Mapper Registers |
| $FFFA-$FFFB | $0002 | NMI vector |
| $FFFC-$FFFD | $0002 | Reset vector |
| $FFFE-$FFFF | $0002 | IRQ/BRK vector |