#DREAMCAST DAYTONA USA GAME WIKI CODE#

You interact with the game via the controller.The game initialization sequence is loaded into RAM.While the disc is spinning up, the console loads portions of the operating system from ROM into RAM.Let's take a look at how Dreamcast uses these maps in trilinear mip mapping: In essence, the processor replaces the appearance of an object with a more detailed image as you move closer to the object in the game.

It is a form of texture mapping in which different sizes of each texture map are made. By making an area of the mask dark gray, you can make an object appear to be very transparent by making it light gray, you can create special fog or water effects. How transparent an object will be is determined by how dark the gray in the alpha channel is. Another 8 bits are used to create a gray-scale mask that acts as a separate layer for representing levels of object transparency. Essentially, 24 bits are used to define the red, green and blue amounts, 8 bits each, needed to create a specific color. This is a special graphics mode used by digital video, animation and video games to achieve certain looks. They include alpha blending, perspective correction and mip mapping.Īlpha blending uses the alpha channel to add transparency effects to an object.

The Dreamcast has several hardware effects that are handled by the PowerVR chip. ADPCM is used to sample analog information, compress it at a ratio of 4:1 and store it in digital format.

#DREAMCAST DAYTONA USA GAME WIKI CODE#

The ARM7 is a 32-bit RISC chip that handles all processing of the compressed adaptive differential pulse code modulation ( ADPCM) audio information in real time. The Dreamcast sound processor is another ASIC it combines a 45 MHz ARM7 CPU and a Yamaha digital signal processor ( DSP).

Simply put, this means that a custom chip is created to manage all of the necessary components that would normally be handled by separate chips. To lower production costs, the graphics processor is combined with circuitry to control the system through a single application specific integrated circuit ( ASIC). This combination of capabilities, performing more instructions simultaneously and completing each instruction faster because it is simpler, allows the CPU to perform better than many chips with a much faster clock speed. Also, RISC chips are superscalar - they can perform multiple instructions simultaneously. RISC stands for reduced instruction set computer, and means that the instructions and computations performed by the processor are simpler and fewer. Like the N64 and the PlayStation, the CPU in the Dreamcast is a RISC processor.

Dreamcast daytona usa game wiki