JG82852GMSL7VP Datasheet, PDF (6/176 Pages) Intel Corporation – Intel® 852GM/852GMV Chipset Intel® 852GM/852GMV Chipset Hub (GMCH)

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Functional Description.............................................................................................................. 123
5.1. Host Interface Overview .............................................................................................. 123
5.2. Dynamic Bus Inversion................................................................................................ 123
5.2.1. System Bus Interrupt Delivery ....................................................................... 123
5.2.2. Upstream Interrupt Messages........................................................................ 124
5.3. System Memory Interface ........................................................................................... 124
5.3.1. DDR SDRAM Interface Overview .................................................................. 124
5.3.2. System Memory Organization and Configuration .......................................... 124
5.3.2.1. Configuration Mechanism for SO-DIMMs..................................... 124
5.3.2.2. System Memory Register Programming....................................... 125
5.3.3. DDR SDRAM Performance Description......................................................... 125
5.4. Integrated Graphics Overview..................................................................................... 126
5.4.1. 3D/2D Instruction Processing ........................................................................ 126
5.4.2. 3D Engine ...................................................................................................... 127
5.4.2.1. Setup Engine ................................................................................ 127
5.4.2.2. Viewport Transform and Perspective Divide ................................ 127
5.4.2.3. 3D Primitives and Data Formats Support..................................... 127
5.4.2.4. Pixel Accurate Fast Scissoring and Clipping Operation ............... 128
5.4.2.5. Backface Culling ........................................................................... 128
5.4.2.6. Scan Converter............................................................................. 128
5.4.2.7. Texture Engine ............................................................................. 128
5.4.2.8. Perspective Correct Texture Support ........................................... 128
5.4.2.9. Texture Decompression ............................................................... 128
5.4.2.10. Texture Chromakey ...................................................................... 129
5.4.2.11. Anti-Aliasing.................................................................................. 129
5.4.2.12. Texture Map Filtering.................................................................... 129
5.4.2.13. Multiple Texture Composition ....................................................... 130
5.4.2.14. Cubic Environment Mapping ........................................................ 130
5.4.2.15. Bump Mapping.............................................................................. 130
5.4.3. Raster Engine ................................................................................................ 130
5.4.3.1. Texture Map Blending .................................................................. 131
5.4.3.2. Combining Intrinsic and Specular Color Components.................. 131
5.4.3.3. Color Shading Modes ................................................................... 132
5.4.3.4. Color Dithering.............................................................................. 132
5.4.3.5. Vertex and Per Pixel Fogging....................................................... 132
5.4.3.6. Alpha Blending.............................................................................. 132
5.4.3.7. Color Buffer Formats: (Destination Alpha) ................................... 133
5.4.3.8. Depth Buffer.................................................................................. 133
5.4.3.9. Stencil Buffer ................................................................................ 133
5.4.3.10. Projective Textures ....................................................................... 134
5.4.4. 2D Engine ...................................................................................................... 134
5.4.4.1. 256-Bit Pattern Fill and BLT Engine ............................................. 134
5.4.4.2. Alpha Stretch BLT......................................................................... 134
5.4.5. Planes and Engines ....................................................................................... 135
5.4.5.1. Dual Pipe Independent Display Functionality............................... 135
5.4.6. Hardware Cursor Plane.................................................................................. 135
5.4.6.1. Cursor Color Formats ................................................................... 135
5.4.6.2. Popup Plane (Second Cursor)...................................................... 135
5.4.6.3. Popup Color Formats ................................................................... 136
5.4.7. Overlay Plane................................................................................................. 136
5.4.7.1. Multiple Overlays (Display C) ....................................................... 136
5.4.7.2. Source/Destination Color/Chromakeying ..................................... 136
5.4.7.3. Gamma Correction ....................................................................... 136
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Intel^® 852GM/852GMV Chipset GMCH Datasheet