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MX86250

MXIC
Part Number MX86250
Manufacturer MXIC
Description THE ADVANCED 64-BIT WINDOWS-95 AND DIRECTDRAW ACCELERATOR
Published Feb 3, 2010
Detailed Description INDEX MX86250 THE ADVANCED 64-BIT WINDOWS-95 AND DIRECTDRAW ACCELERATOR 1. INTRODUCTION The MX86250 is a new generation...
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MX86250
MX86250

Overview
INDEX MX86250 THE ADVANCED 64-BIT WINDOWS-95 AND DIRECTDRAW ACCELERATOR 1.
INTRODUCTION The MX86250 is a new generation of fully integrated graphics and video accelerator.
On a single chip, it integrates a 64-bit graphics CoProcessor, a true-color video processor, 135 MHz RAMDAC and dual programmable clock synthesizer.
The MX86250 not only delivers extreme high performance in conventional GUI acceleration, it also provides very rich functionality for motion video applications.
The MX86250 true color video processor allows full screen full motion playback of AVI and MPEG video from software based Codec's such as MPEG, Cinepak and Indeo.
For even higher quality MPEG video playback, the MX86250 Media port supports the VMI connector linking to an external MPEG-1 decoder chip.
The Media port also provides for playback and capture of live video input from TV tuner or video camera.
One key design goal of the MX86250 is to achieve the highest possible memory bandwidth in the display memory subsystem using main stream and cost effective EDO DRAM chips.
By applying the RISC design technique of super pipelining, the MX86250 graphics CoProcessor can execute one bitblt operation in every clock cycle.
When running at 50 Mhz and above, using 50 or faster EDO DRAM ( 20ns page mode cycle time), the bandwidth can reach 400 MB/sec and above.
This extremely high bandwidth gives top-notch Windows GUI performance and fast frame rate in motion video playback.
For mainstream software Codec delivered video playback, the MX86250 provides video acceleration by a second generation” video processor consisting of YUV to RGB converter, scaler, and two dimensional bilinear filter.
The scaler can zoom the video windows at arbitrary ratios.
The bilinear filter provides both horizontal and vertical interpolation which is absent from 1st generation video chips.
For Windows 95 Games, the MX86250 supports DirectDraw with a rich set of features such as fast transparent Blts, double buffering and page fl...


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