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Intel 815 manual GFXRENDERSTATEBOOLEANENA1, 2824 3DState24 03h Reserved 0h

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Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0

R

13.19.GFXRENDERSTATE_BOOLEAN_ENA_1

Dword

Bit

Description

031:29 Client : 03h – Render Processor

28:24 3DState24 : 03h

23:20 Reserved : 0h

19 Specular Setup Enable Mask : 1 = Update; 0 = Do Not Update

18Specular Setup Enable : 0 = Disable (default), 1 = Enable

This SV enables specular gradient calculations in the Setup Unit (independent of other specular SVs). This bit is currently not used. This bit, along with it's corresponding mask bit, are tied to bits 8 and 9 of this same register.

17Alpha Setup Enable Enable Mask : 1 = Update; 0 = Do Not Update

16Alpha Setup Enable : 0 = Disable (default), 1 = Enable

	This SV enables alpha gradient calculations in the Setup Unit (independent of other
	alpha SVs).

15	Color Index Key Enable Mask : 1 = Update; 0 = Do Not Update

14	Color Index Key Enable : 0 = Disable (default), 1 = Enable

13	Chromakey Enable Mask : 1 = Update; 0 = Do Not Update

12	Chromakey Enable : 0 = Disable (default), 1 = Enable

11	Source Z Bias Enable Mask: 1 = Update; 0 = Do Not Update

10	Source Z Bias Enable: 1 = Enable, 0 = Disable (default)

9	Specular Enable State Mask : 1 = Update; 0 = Do Not Update

8	Specular Enable : 1 = Enable, 0 = Disable (default)

7	Fog Enable State Mask : 1 = Update; 0 = Do Not Update

6	Fog Enable : 1 = Enable, 0 = Disable (default)

5	Alpha Enable State Mask : 1 = Update; 0 = Do Not Update

4	Alpha Test Enable : 1 = Enable, 0 = Disable (default)

3	Blend Enable State Mask : 1 = Update; 0 = Do Not Update

2	Blend Enable : 1 = Enable, 0 = Disable (default)

1	Z Enable State Mask : 1 = Update; 0 = Do Not Update

00 Z Enable : 1 = Enable, 0 = Disable (default)

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Intel 815 manual GFXRENDERSTATEBOOLEANENA1, 2824 3DState24 03h Reserved 0h

Contents

Programmer’s Reference Manual PRM Intel 815 Chipset Graphics ControllerIntel 815 Chipset Graphics Controller PRM, Rev Contents 100 106 141 Monosrccopyimmediateblt Gfxrenderstatemaplodlimits 15.4.3.3 HORZPH-Horizontal Phase Register 279 15.4.3.4 16.2.5 Figures Tables Rev Revision HistoryDate This page is intentionally left blank Terminology IntroductionTerm Description MCH Reference DocumentsIntel 815 Chipset Overview Intel 82815 Chipset Gmch Overview I/O Controller HubHost Interface Intel 82815 Chipset Gmch Block DiagramSystem Memory Interface Data Rate Signaling LevelMultiplexed AGP and Display Cache Interface Intel 82815 Chipset Gmch Integrated Graphics Support Hub InterfaceThree PCI Devices on Gmch Gmch Power DeliverySystem Clocking Front Side Bus System Memory Display Cache InterfaceMulti-Mode Capability Requirements Supported Single Monitor and Multi-monitor ConfigurationsConfiguration Single Monitor Multi-monitor System Startup Device Mode Auto-Detect FlowchartSoftware Start-Up Sequence Graphics Driver Startup Switching Device modes System Memory Space System Address MapGraphics Controller Register Memory and I/O Map Memory and I/O Space RegistersReserved 50000h−5FFFFh. Reserved in the Intel 815 chipset GC Register Memory Address Map Address Offset Symbol Register Name AccessVGA and VGA Extended Registers Instruction and Interrupt Control Registers 01000h −02FFFhInstpm OV0ADD Ssladd Display and Cursor Control Registers 70000h-7FFFFh VGA and Extended VGA Register MapAddress Register Name Read Register Name Write 2D Registers VGA and Extended VGA I/O and Memory Register MapIndex Sym Description Indirect VGA and Extended VGA Register IndicesIndex Sym Register Name 2D Attribute Controller Registers 3C0h / 3C1h CR0F Graphics Address Translation GTT Memory Buffers for GC’s Instruction InterfaceGraphics Translation Table GTT Range Definition This page is intentionally left blank Vendor Id Device Id PCI Device Characteristics Basic Initialization ProceduresInitialization Sequence Hardware Detection ProbeFrame Buffer Initialization Hardware State Hardware Register InitializationColor vs. Monochrome Monitors Protect Registers Locking and UnlockingSaving the Hardware State Restoring the Hardware State Intel 815 Chipset Graphics Controller PRM, Rev Intel 815 Chipset Graphics Controller PRM, Rev This page is intentionally left blank Blt Engine Programming When the Source and Destination Locations OverlapBLT Engine Programming Considerations Source Bblt3.vsd Destination Source Bblt4.vsd Contiguous vs. Discontinuous Graphics Data Basic Graphics Data ConsiderationsSource Data Monochrome Source Data Pattern Data -- Always an 8x8 Array of Pixels Pattern DataBpp Pattern Data -- Occupies 64 Bytes 8 quadwords Destination Data Pattern Fill -- a Very Simple BLT BLT Programming ExamplesPattern Data for Example Pattern Fill BLT Results of Example Pattern Fill BLT On-Screen Destination for Example Character Drawing BLT Drawing Characters Using a Font Stored in System MemoryIntel 815 Chipset Graphics Controller PRM, Rev Results of Example Character Drawing BLT Standard VGA Registers Initialization RegistersSmram Registers SMRAM-System Management RAM Control Register DeviceRAM Bit DescriptionInitialization and Usage of Stolen Memory LCD/TV-Out Clock Control and Power Management RegistersDisplay and Cursor Control Registers CRT Controller Registers 3B4h/3D4h/3B5h/3D5h Graphics Controller Registers 3CEh / 3CFhMSR Initialization Values for VGA RegistersGR01 00h This page is intentionally left blank Frame Buffer Access Intel 815 Chipset Graphics Controller PRM, Rev General Control & Status Registers VGA and Extended VGA RegistersName Function Read Write Memory OffsetBit 1. ST00Input StatusST01Input Status Display Enable OutputBit Descriptions Vertical Retrace/VideoReserved. Read as Vsync Control FCRFeature ControlCRT VSync Polarity MSRMiscellaneous OutputCRT HSync Polarity SRXSequencer Index Sequencer Registers2. SR00Sequencer Reset Shift 3. SR01Clocking Mode4. SR02Plane/Map Mask Bit 32 Map Number Table Location 5. SR03Character FontBit 10,4 Map Number Table Location Made according to the value of the Plane Mask Register SR02 6. SR04Memory Mode RegisterGraphics Controller Registers 7. SR07Horizontal Character Counter ResetGRXGRX Graphics Controller Index Register Bit Description Horizontal Character Counter3. GR01Enable Set/Reset Register 2. GR00Set/Reset Register5. GR03Data Rotate Register 4. GR02Color Compare Register6. GR04Read Plane Select Register 7. GR05Graphics Mode RegisterBits 65=01 Bits 65=00Bits 65=1x Read Mode Odd/Even ModeWrite Mode 8. GR06Miscellaneous Register Graphics/Text ModeBit 10. GR08Bit Mask Register 9. GR07Color Don’t Care RegisterBit Mask Packed Mode Enable Reserved To Local Memory Enable11. GR10Address Mapping VGA Buffer/Memory Map SelectSupported 12. GR11Page Selector13. GR141FSoftware Flags Memory Offset Address 3CFh Index=14h-1fh Default AttributeARXAttribute Controller Index Register Attribute Controller Registers3. AR10Mode Control Register 2. AR000FPalette Registers 0FPalette Bits P5, P4 Select Pixel Width/Clock SelectEnable Line Graphics Character Code Enable Blinking/Select Background IntensityGraphics/Alphanumeric Mode Pixel Panning Compatibility4. AR11Overscan Color Register 5. AR12Memory Plane Enable RegisterBit 54 ST01 Bit Reserved 6. AR13Horizontal Pixel Panning RegisterPixel Text Color Pixel Text Graphics7. AR14Color Select Register VGA Color Palette RegistersDACMASKPixel Data Mask Register DACRXPalette Read Index Register DACSTATEDAC State RegisterDACWXPalette Write Index Register Bits Index Register IndicatedDACDATAPalette Data Register CRT Controller RegisterCRXCRT Controller Index Register Display Fields and Dimensions CRxx Control Registers2. CR00Horizontal Total Register 3. CR01Horizontal Display Enable End Register4. CR02Horizontal Blanking Start Register 5. CR03Horizontal Blanking End Register Bit Amount of Delay6. CR04Horizontal Sync Start Register 7. CR05Horizontal Sync End Register 9. CR07Overflow Register 8. CR06Vertical Total Register115 116 10. CR08Preset Row Scan Register 11. CR09Maximum Scan Line Register Double Scanning Enable13. CR0BText Cursor End Register 12. CR0AText Cursor Start Register14. CR0CStart Address High Register 16. CR0EText Cursor Location High Register 15. CR0DStart Address Low Register18. CR10Vertical Sync Start Register 17. CR0FText Cursor Location Low Register19. CR11Vertical Sync End Register CR13Offset Register 20. CR12Vertical Display Enable End Register22. CR14Underline Location Register CR146 CR176 Addressing ModeCount By CR145 CR173 Address Incrementing Interval24. CR16Vertical Blanking End Register 23. CR15Vertical Blanking Start RegisterWord Mode or Byte Mode 25. CR17CRT Mode ControlCR146 CR176 Select Row Scan Counter Compatibility Mode SupportMemory Address Counter Address Bits DWord ModeCR17 bit 1=1 CR17 bit 1=0 CR17 bit 0=1 CR17 bit 0=0 Frame Buffer Address Decoder27. CR22Memory Read Latch Data Register 26. CR18Line Compare Register29. CR30Extended Vertical Total Register 30. CR31Extended Vertical Display End Register 31. CR32Extended Vertical Sync Start Register 32. CR33Extended Vertical Blanking Start Register 34. CR39Extended Horizontal Blank Time Register 33. CR35 Extended Horizontal Total Time RegisterExtended Horizontal Total MSB that extends CR00 35. CR40Extended Start Address Register 37. CR42Extended Start Address High Register 36. CR41Extended Offset Register38. CR70Interlace Control Register Interlace Enable39. CR80I/O Control 41. CR82Blink Rate Control 40. CR81ReservedReserved Bits and Software Compatibility Programming InterfaceOverview GC Instruction Streams GC Register ProgrammingInstruction Use Instruction Transport OverviewInterrupt Ring Instruction ParserRing Buffer Registers Ring Buffers RBRing Buffer Initialization Characteristic DescriptionRing Buffer Use Batch Buffer Sequence Batch BuffersArbitration Rationale Instruction ArbitrationWait Instructions Instruction Arbitration Points Batch Buffer Protected ModeInstruction Arbitration Rules Instruction Parser Instructions Instruction FormatInstructions 3129 2824 210 BitsClient Instruction Graphics Controller InstructionsClient Introduction Instruction Parser InstructionsInstruction Descriptions DWord Bit DescriptionOpcode 02h Opcode 01hReserved MBZ DWord Bit GfxcmdparserwaitforeventDWord Bits Description Reserved 00000h Opcode 15hDwordlength 00h Flip type 0 Synch flip, 1 Async flip Instruction Target 14hDword Length 00h Opcode 07h Opcode 16hArbitration ON/OFF Opcode 08hInstruction Target 11h Instruction Target 12hWord Bits Description Instruction Target 30h GfxcmdparserbatchbufferBLTs To and From Cacheable Memory InstructionsBLT Engine Instructions Setupblt Setup Foreground Color SLB & TB only Setup Background Color AllInstruction Target Opcode 00h Dword Length 06hDword Length 07h Instruction Target Opcode 10hColor Depth Raster OperationInstruction Target Opcode 20h PixelbltInstruction Target Opcode 21h Destination X2 Coordinate Ending RightInstruction Target Opcode 22h TextbltDword Length 04h Instruction Target Opcode 30h TEXTImmediateBLTImmediate Data DW Immediate Data DWs 2 through Dwordlength DWLInstruction Target Opcode 40h ColorbltDword Length 03h Solid Pattern ColorInstruction Target Opcode 41h PatbltMonopatblt Mono Pattern Transparency Mode 1 = transparency enabledInstruction Target Opcode 42h Pattern Background ColorInstruction Target Opcode 43h SrccopybltLine Instruction Target Opcode 44hSource Foreground Color Source Background ColorInstruction Target Opcode 61h Mono Source Transparency Mode 1 = transparency enabledFullblt Destination Transparency Mode See BR00 definitionInstruction Target Opcode 45h Destination Transparency Color FullmonosrcbltInstruction Target Opcode 46h Dword Length 09h Instruction Target Opcode 47h181 Dword Length 0Ah Instruction Target Opcode 48h183 12.3.1. BR00-BLT Opcode and Control BLT Engine Instruction Definitions185 SolPat Rsvd Mono 187 12.3.4. BR03-Clip Rectangle Y2 Address 12.3.3. BR02-Clip Rectangle Y1 Address3128 Reserved. Must be Zero 2716 12.3.5. BR04-Clip Rectangle X112.3.7. BR06-Setup Expansion Foreground Color 12.3.6. BR05-Setup Expansion Background Color12.3.8. BR07-Setup Color Pattern Address 12.3.9. BR08-Destination X1 12.3.11. BR10-Destination Y2 Address 12.3.10. BR09-Destination Address and Destination Y1 AddressSource Pitch Offset or Monochrome Source Quadwords 12.3.13. BR12-Source Address Increment/Decrement Select 12.3.14. BR13-BLT Raster OP, Control, and Destination PitchDynamic Color Depth Source Select Mode12.3.15. BR14-Destination Width & Height 12.3.16. BR15-Color Pattern Address 3124 Reserved. Must be Zero 230 12.3.18. BR17-Pattern Expansion Foreground Color12.3.20. BR19-Source Expansion Foreground Color DSLH-Destination Scan Line Height SSLADD-Source Scan Line AddressDSLRADD-Destination Scan Line Read Address 204 Gfxprimitive Rendering Engine InstructionsAxis Aligned Rectangles Primitive Winding OrderBias Position MaskPrimitive Rendering Instruction Format Vertex Attribute Comments Variable Length Vertex Formats for Rendering InstructionsGfxvertex Gfxrenderstatevertexformat Rendering Block 1Eh GfxblockBlock Type Block Pattern FormatVertical Motion Vector Precision 00 = 1/2 pixel DWord BitsPrediction Type 212 Motion Vector Format Non-pipelined State VariablesPrecision Format Range Gfxrenderstatemaptexels Gfxrenderstatemapcoordsets Normalized Coordinate Set Mask 0 = Do not update 1 = Update Update Coordinate Set Index The valid range isOpcode 1h Normalized Coordinate SetGfxrenderstatemapinfo Walk Discrete Integrated Base Utilize Fence Tiled SurfaceDwordlength 2h 3DstateMW 1DhReserved 0h Surface Format1511 Color Space Conversion Enable221 Gfxrenderstatemapfilter Opcode 2h Reserved 00h Mip Mode Filter Valid values areOpcode 3h GfxrenderstatemaplodlimitsGfxrenderstatemaplodcontrol Texture LOD Dither Weight Mask 0 = Do not update 1 = UpdateOpcode 4h 3DStateMWNPNon-pipelined 1Dh GfxrenderstatemappaletteloadOpcode 82h Blend Equation Description Gfxrenderstatemapcolorblendstages3DState24 00h Update Blending Stage Index The valid range isWrite result to Current Register or Accumulator Select Replicate Arg1 Alpha to Color ChannelsInvert Color Arg2 Gfxrenderstatemapalphablendstages Invert Alpha Arg1 3DState24 01hInvert Alpha Arg2 Instruction 1h GfxrenderstatecolorfactorGfxrenderstatecolorchromakey Kill Pixel ModeInstruction 2h KeyedPixelControl Write Mask 0 = Do not update 1 = UpdateKeyedPixelControl No Specular GfxrenderstatesrcdstblendmonoMonochrome Specular Full Color RGB 236 Opcode Source / Destination Blend State Gfxrenderstatezbiasalphafuncref Alpha Reference State Mask 1 = Update 0 = Do Not Update3DState24NP Non-pipelined 14h Gfxrenderstatelinewidthcullshade Mode Specular Shade Mode State Mask 1 = Update 0 = Do Not Update Alpha Shade Mode State Mask 1 = Update 0 = Do Not UpdateColor Shade Mode State Mask 1 = Update 0 = Do Not Update 2824 3DState24 02hColor Index Key Enable Mask 1 = Update 0 = Do Not Update Alpha Setup Enable Enable Mask 1 = Update 0 = Do Not UpdateSpecular Enable State Mask 1 = Update 0 = Do Not Update GFXRENDERSTATEBOOLEANENA1Frame Buffer Write Enable Mask 1 = Update 0 = Do Not Update Specular Dither Enable Mask 1 = Update 0 = Do Not UpdateBuffer Write Enable Mask 1 = Update 0 = Do Not Update GFXRENDERSTATEBOOLEANENA2Gfxrenderstatedrawingrectangleinfo Gfxrenderstatefogcolor3DState24NP Non-pipelined 15h Opcode 80h 3DStateMWNP Non-pipelined 1DhScissor Rectangle Enable Mask 1 = Update 0 = Do Not Update Gfxrenderstatescissorenable3DState16NP Non-pipelined 1Ch Opcode 10hOpcode 81h GfxrenderstatescissorrectangleinfoOpcode 83h Stipple PatternStipple Pattern Gfxrenderstateantialiasing Vertex Sequence Gfxrenderstateprovokingvtxpixelization RulePixelization Rule Mask Small Triangle Filter Enable MaskOpcode 85h GfxrenderstatedestbuffervariablesDest Buffer Format 0h = Any 8-bit Surface Drawing and Scissor Rectangles Programming Hints/RulesColor Calculator 255 256 Programming Notes Clock Control RegistersExample Programming Sequence DCLK2 DCLK0D-Display Clock 0 Divisor RegisterDCLK1D-Display Clock 1 Divisor Register DCLK2D-Display Clock 2 Divisor Register LCDCLKD-LCD Clock Divisor Register Post Divisor Select LCD Clock DCLK0DS-Display & LCD Clock Divisor Select RegisterReserved VCO Loop Divide LCD Clock VCO Loop Divide clock Post Divisor Select clockInternal DAC Enable PWRCLKC-Power Management and Miscellaneous Clock ControlOverlay Registers Comment Register/Instruction CategoryUpdating Register Values 15.1. OV0ADD-Overlay 0 Register Update Address RegisterDOV0STA-Display/Overlay 0 Status Register GAMC50-Gamma Correction Registers Gamma CorrectionGreen Blue RedThree times Mathematical Gamma Correction For OverlayLatch Address Gamma Correction Theory Of OperationGamma Hardware Implementation Overlay Buffer Pointer Registers Memory Offset RegistersOBUF0Y-Overlay Buffer 0 Y Pointer Register Format AlignmentOBUF0U-Overlay Buffer 0 U Pointer Register OBUF1Y-Overlay Buffer 1 Y Pointer RegisterOBUF1U-Overlay Buffer 1 U Pointer Register OBUF0V-Overlay Buffer 0 V Pointer RegisterBit Descriptiont OBUF1V-Overlay Buffer 1 V Pointer Register Overlay Stride Registers15.4.2.1. OV0STRIDE-Overlay 0 Stride Register YRGBVPH-Y/RGB Vertical Phase Register Overlay Initial Phase RegistersHORZPH-Horizontal Phase Register UVVPH-UV Vertical Phase RegisterINITPH-Initial Phase Register DWINPOS-Destination Window Position Register Overlay Destination Window Position/Size RegistersDWINSZ-Destination Window Size Register SWID-Source Width Register Overlay Source Size RegistersSWIDQW-Source Width In QWords Register SHEIGHT-Source Height Register YRGBSCALE-Y/RGB Scale Factor Register Overlay Scale Factor RegistersUVSCALE-UV Scale Factor Register 15.4.7.1. OV0CLRC0-Overlay 0 Color Correction 0 Register Overlay Color Correction Registers15.4.7.2. OV0CLRC1-Overlay 0 Color Correction 1 Register DCLRKV-Destination Color Key Value Register Overlay Destination Color Key RegistersAlways Constant Alpha Blend Enable Destination Constant Alpha Blend EnableDCLRKM-Destination Color Key Mask Register SCLRKVH-Source Color Key Value High Register Overlay Source Color Key RegistersSCLRKM-Source Color Key Mask Register SCLRKVL-Source Color Key Value Low RegisterSource Constant Alpha Blend Enable 15.4.10.1. OV0CONF-Overlay Configuration Register Overlay Configuration Registers15.4.11. OV0CMD-Overlay Command Register Vertical Luminance Filter. Vertical Luminance Filter Vertical Chrominance Filter. Vertical Chrominance FilterSource Format Manual flip commandAutomatic flipping 297 AWINPOS-Alpha Blend Window Position Register Overlay Alpha Blend Window Position/Size RegistersAWINSZ-Alpha Blend Window Size Register Overlay Flip Instruction300 Instruction Control Registers Instruction, Memory, and Interrupt Control RegistersFENCE-Graphics Memory Fence Table Registers Tile walk Reserved for address bits 31 downtoFence size Fence PitchNormal Invalidation Mechanism PGTBLCTL-Page Table Control RegisterPGTBLER-Page Table Error Register Error Type PGTBLERRMSK-Page Table Error Mask Register Command Streamer DMA Page Table Error Mask Buffer Unit Page Table Error MaskOverlay Page Table Error Mask Display Page Table Error MaskIntel 810 Chipset and Intel815 Chipset Errata RINGBUF-Ring Buffer RegistersRing Buffer Valid ReservedDWord Description Offset HWSPGA-Hardware Status Page Address RegisterIPEHR-Instruction Parser Error Header Register debug IPEIR-Instruction Parser Error Identification Register debugINSTDONE-Instruction Stream Interface Done Register This read only register reports engine done signalsNOPID-NOP Identification Register Disable State Variable Updates INSTPM-Instruction Parser Mode RegisterINSTPS-Instruction Parser State Register debug Cscpr State Machine Command Parser ABBSTR-Active Batch Buffer Start Address Register debug BBPPTR-Batch Buffer Parser Pointer Register debugDMAFADD-DMA Engine Fetch Address debug ABBEND-Active Batch Buffer End Address Register debugCurrent DMA Address Reserved User of the DMA Engine Reserved Host Graphics Prefetch Mode MEMMODE-Memory Interface Mode Register debugGraphics Address Translation Mode Instruction Fifo Debug ModeBit Definition For Interrupt Control Registers Interrupt Control Registers321 HWSTAM-Hardware Status Mask Register Interrupt Enables. See Table IER-Interrupt Enable RegisterInterrupt Identity. See. Table IIR-Interrupt Identity RegisterInterrupt Mask Bits. See. Table IMR-Interrupt Mask RegisterISR-Interrupt Status Register Table Error handling in Intel 815 Chipset Error Identity, Mask and Status RegistersTable Error Resetting the Page Table ErrorEMR-Error Mask Register EIR-Error Identity RegisterESR-Error Status Register FWBLC-FIFO Watermark and Burst Length Control Display Interface Control332 HTOTAL-Horizontal Total Register LCD / TV-Out Register DescriptionHBLANK-Horizontal Blank Register HSYNC-Horizontal Sync Register VTOTAL-Vertical Total Register VBLANK-Vertical Blank Register VSYNC-Vertical Sync Register LCDTVC-LCD/TV-Out Control Register LCD / TV-Out EnableSync Polarity Control FP / 740 Data Ordering FP Vesa VGA ModeFpvsync Control Fphsync ControlFphsync Output Control Border EnableActive Data Order Active Data PolarityBCLRPAT- Border Color Pattern Register OVRACT-Overlay Active RegisterDRT-DRAM Row Type Local Memory InterfaceBit RAS#-to-CAS# delay t RCD Reserved Paging Mode Control PMCDRAMCL-DRAM Control Low Bit RAS# act. To precharge t RAS Refresh to RAS# act. t RCDRAMCH-DRAM Control High 346 HVSYNC-HSYNC/VSYNC Control Register 19. I/O Control RegistersHSYNC/VSYNC Control1916 GPIOAGeneral Purpose I/O Control Register a Gpio RegistersValue .bit GPIOBGeneral Purpose I/O Control Register B 351 352 DISPSL-Display Scan Line Count Display And Cursor RegistersLine Counter for Display Inclusive / Exclusive DISPSLC-Display Scan Line Count Range CompareReserved Display path Graphics Gamma Enable. See note PIXCONF-Pixel Pipeline ConfigurationOverlay path Gamma Enable. See note Pixel Pipeline ControlBit DAC Enable Display Color ModeEnable Extended Status Read Mode CRT Overscan ColorTransition from VGA modes to hires mode or opposite GUI ModeBLTCNTL-BLT Control SWF13-Software Flag RegistersDPLYBASE-Display Base Address Register Vertical Sync Status Enable Reserved Flat Panel Hot Plug Detect EnableDisplay Line Compare Enable DPLYSTAS-Display Status Select RegisterOverlay Registers Upated Enable Vertical Blank EnableOverlay Registers Updated Status Vertical Sync StatusCURCNTR-Cursor Control Register Hardware CursorReserved Cursor Coordinate System Origin Select CURPOS-Cursor Position Register CURBASE-Cursor Base Address RegisterAppendix a Mode Parameters Parameters for Screen Resolution/Refresh Rate 320x20070Hz = Parameters for Screen Resolution/Refresh Rate 320x24070Hz = Parameters for Screen Resolution/Refresh Rate 352X48070Hz = Parameters for Screen Resolution/Refresh Rate 352X57670Hz = Parameters for Screen Resolution/Refresh Rate 400x30070Hz = Parameters for Screen Resolution/Refresh Rate 512X38470Hz = Parameters for Screen Resolution/Refresh Rate 640x35085Hz = Parameters for Screen Resolution/Refresh Rate 640x40070Hz = Parameters for Screen Resolution/Refresh Rate 640x40085Hz = Parameters for Screen Resolution/Refresh Rate 640x48060Hz = Parameters for Screen Resolution/Refresh Rate 640x48070Hz = Parameters for Screen Resolution/Refresh Rate 640x48072Hz = Parameters for Screen Resolution/Refresh Rate 640x48075Hz = Parameters for Screen Resolution/Refresh Rate 640x48085Hz = Parameters for Screen Resolution/Refresh Rate 720x40085Hz = Parameters for Screen Resolution/Refresh Rate 720x48060Hz = Parameters for Screen Resolution/Refresh Rate 720x48075Hz = Parameters for Screen Resolution/Refresh Rate 720x48085Hz = Parameters for Screen Resolution/Refresh Rate 720x57660Hz = Parameters for Screen Resolution/Refresh Rate 720x57675Hz = Parameters for Screen Resolution/Refresh Rate 720x57685Hz = Parameters for Screen Resolution/Refresh Rate 800x60056Hz = Parameters for Screen Resolution/Refresh Rate 800x60060Hz = Parameters for Screen Resolution/Refresh Rate 800x60070Hz = Parameters for Screen Resolution/Refresh Rate 800x60072Hz = Parameters for Screen Resolution/Refresh Rate 800x60075Hz = Parameters for Screen Resolution/Refresh Rate 800x60085Hz = Parameters for Screen Resolution/Refresh Rate 854X48060Hz = Parameters for Screen Resolution/Refresh Rate 854X48075Hz = Parameters for Screen Resolution/Refresh Rate 854X48085Hz = 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 Intel around the world