NES Programming/Memory Map
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CPU Memory Map[edit | edit source]
| Address | Size | Description |
|---|---|---|
| $0000 | 0x800 | 2KB of work RAM |
| $0800 | 0x800 | Mirror of $000-$7FF |
| $1000 | 0x800 | Mirror of $000-$7FF |
| $1800 | 0x800 | Mirror of $000-$7FF |
| $2000 | 0x8 | PPU Ctrl Registers |
| $2008 | 0x1FF8 | *Mirror of $2000-$2007 |
| $4000 | 0x20 | Registers (Mostly APU) |
| $4020 | 0x1FDF | Cartridge Expansion ROM |
| $6000 | 0x2000 | SRAM |
| $8000 | 0x4000 | PRG-ROM |
| $C000 | 0x4000 | PRG-ROM |
* Mirrored 1023 times, not including $2000 - $2007.
PPU Memory Map[edit | edit source]
| Address | Size | Description |
|---|---|---|
| $0000 | $1000 | Pattern Table 0 |
| $1000 | $1000 | Pattern Table 1 |
| $2000 | $3C0 | Name Table 0 |
| $23C0 | $40 | Attribute Table 0 |
| $2400 | $3C0 | Name Table 1 |
| $27C0 | $40 | Attribute Table 1 |
| $2800 | $3C0 | Name Table 2 |
| $2BC0 | $40 | Attribute Table 2 |
| $2C00 | $3C0 | Name Table 3 |
| $2FC0 | $40 | Attribute Table 3 |
| $3000 | $F00 | Mirror of 2000h-2EFFh |
| $3F00 | $10 | BG Palette |
| $3F10 | $10 | Sprite Palette |
| $3F20 | $E0 | Mirror of 3F00h-3F1Fh |
Links[edit | edit source]
- Nes specifications - Detailed information on every aspect of the NES
- Nintendo Entertainment System Documentation - More information on the NES
- Brad Taylor's NES documentation - NES documentation written by Brad Taylor
- Visual 2A03 and 2C02 - Simulators of chips at hardware level
- NES memory map - Additional reference with references