However, most games can’t afford to spend their time waiting in loops, especially during action scenes where CPU time is precious. For these cases, special hardware (called a mapper, because it uses its own memory mapping) is in the carts which can retrieve notifications when a certain scanline occurs removing the need to have wait loops at all. The game code can do whatever task it wants, whenever it wants, resulting in better cpu utilization.
Notice that all of the different moving sections occupy strict horizontal bands; that is, none of the background layers overlap each other. This is a consequence of the fact that splits are made by changing the scroll at individual scanlines.
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Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.