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Difference between revisions of "VDP2 32-bit background and scroll plane video display processor"

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The VDP 2 serves as the [[Sega Saturn]]'s background processor. Certain special effects such as texture transparency and playfield rotation and scrolling (up to five fields at any given time) are handled here.
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#redirect [[sega:VDP2 32-bit background and scroll plane video display processor]]
 
 
Both the VDP2 and [[VDP1 32-bit video display processor]] have direct access to the both [[Hitachi SuperH2 7604 32-Bit RISC|SH2s]], as well as direct memory access (DMA) to both the main and video RAM.
 
* Background engine
 
* Four simultaneous scrolling backgrounds
 
* Uses 8x8 or 16x16 tiles or [[bitmap]] display per background
 
* Programmable memory access controller for VDP2 VRAM
 
* Two simultaneous rotating playfields
 
* VDP2 can rotate VDP1 framebuffer position while scanning out to display for rotation effects
 
* Color RAM supports 15-bit (32768 colors) and 24-bit (16.7 million colors) display modes
 
* Programmable priority at the per-background / per-tile / per-pixel levels
 
* Background color tinting/fading, and transparency effects
 
* Background blur effect (gradation) to simulate distance
 
Programmable display resolution:
 
* Horizontal sizes of 320, 352, 640, 704 pixels
 
* Vertical sizes of 224, 240, 256 scanlines, non-interlaced
 
* Vertical sizes of 448, 480, 512 scanlines, interlaced
 
(Only PAL consoles support 256 and 512 scanline displays)
 
* Hi-Vision ([[EDTV]]) and 31KHz ([[VGA]]) display support:
 
* 31KHz: 320x480 or 640x480, non-interlaced ([[progressive scan]])
 
* Hi-Vision: 352x480 or 704x480, non-interlaced ([[progressive scan]])
 
(Requires compatible monitor and video cable)
 
 
 
[[Category:Saturn Hardware]]
 

Latest revision as of 12:27, 1 April 2010