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Line 25: A color palette must be defined in order to show graphics on the screen. It is stored in a separate 32 byte ___location in RAM, known as "palette-RAM". Each entry here chooses a color from the hardware color palette, which are the predefined colors to choose between. 16 colors can be chosen for sprites, and 16 colors for backgrounds. However, bytes 4, 8 and 12 of each of the sprite palette, and bytes 0, 4, 8, and 12 of the background palette, are [[Dummy data\|dummy bytes]] which are not in use by the PPU. Therefore, the number of actually usable colors is reduced to 25 instead of 32. The first byte of the sprite palette also defines the background color used for transparency. ==See ~~Also~~also== [[Nintendo Entertainment System]] Line 33: [[Category:Graphics chips]] [[Category:Nintendo Entertainment System]]

Picture Processing Unit: Difference between revisions