Picture Processing Unit: Difference between revisions

Revision as of 13:37, 4 July 2013

Revision as of 13:57, 4 July 2013

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== Key features ==

* 2 kB of external [[Random-access memory|RAM]] to store tile layout and auxiliary color information for background graphics information(commonly referred to as storage''nametables'')

* 256 bytes of internal [[Dynamic random-access memory|DRAM]] for [[Sprite (computer graphics)|sprite]] dataattribute storage. This is measured in the amount of [[Address space|address space]] consumed; not every bit of every byte exists in the PPU.

* 32 bytes of internal [[Static random-access memory|SRAM]] for palette storage. As for sprite attribute storage, not all bits exist in the PPU.

* 8 × 8 or 8 × 16 (selectable) sized [[Sprite (computer graphics)|sprite]]s

* Two external 4 kB [[tile set]]s with space for 256 tiles each, usually stored in either RAM or ROM on the game cartridge

* Up to 64 sprites (movable objects) on screen simultaneously (only 8 visible per [[scan line]])

* 25 colors simultaneously (although more colors are possible using programming tricks) from a hardware [[Palette (computing)|color palette]] of 64 colors