Creating NES background graphics - Falmouth-Games-Academy/comp310-wiki GitHub Wiki
The NES native resolution is 256x240 px but the NES are most commonly configured to a default 256x224.
Above is the limited colours you have to choose from.
Tile map
The map is a 2 dimensional array of tile indexes. Backgrounds are still loaded as 8x8 tiles and pieced together into a larger image, palettes are assigned in 16x16 attribute tables. So if you were to break your background into a 16x16 grid, each cell of the grid has to share one of the four color palettes, shown below.
