Compaq D310 manual Intel 845G Chipset Integrated Graphics, Key Features

Page 30

System Features

Graphics

The Compaq Evo D310 Micro Desktop has an Integrated Intel graphics solution. It also has an AGP slot where an ATI Radeon 7000 or ATI Radeon 7500 graphics card can be installed:

Intel 845G Chipset Integrated Graphics

The Intel 845G chipset offers integrated graphics with Dynamic Video Memory Technology (DVMT). Some memory (8MB) is reserved at boot time from the main memory; further memory is allocated as needed.

Key Features

•Dynamic Video Memory Technology: Ensures most efficient system memory usage for optimal 2D/3D graphics and system performance

•Zone Rendering Technology: Significantly reduces the memory bandwidth by up to 11x which results in much higher 3D performance

•Tiled Memory Addressing: Performs Address Remapping in hardware for all graphics surfaces which increases page coherency and improves memory efficiency

•Dynamic Multi-Context Switcher: Provides deeply pipelined operations in both 2D and 3D allowing overlapping operations with no need to flush between modes of operation

•Intelligent Memory Manager: Fourth generation UMA Memory Manager that provides faster accesses, adequate burst sizes and smart page closing policies

•4x Blit Engine for 2D operations: 256 bit wide Blitter fills at a much greater rate than memory bandwidth which speeds up operations like drop down menus

•Deep Display Buffers: Buffer for screen refreshes which enables higher system performance by reducing the CPU latency as well as decreasing the total transactions handled by the CPU

•Non-blocking and multi-tier cache structures: Dedicated internal caches for textures, colors, Z and vertices which significantly reduces memory bandwidth and improves core performance

•Single-Pass Quad Texture Support: Supports up to blending operations for up to four textures in a single pass which reduces memory bandwidth requirements and CPU loading

•Texture Decompression: Provide up to 8x compression and consequent reduction in bandwidth and footprint.

Memory Usage with Dynamic Video Memory Technology

At boot time the system BIOS dedicates 8MB of system memory for graphics display. When more memory is needed the Intel 845 graphics driver submits a request to the operating system, the operating system grants the request based upon available system memory. When the application is closed, the OS will reallocate system memory back for generic use. The quantity of additional memory which can be allocated for video by the operating system is limited, the limit depends on the quantity of memory installed on the system and on the driver version (the latest drivers can be downloaded from the web).

The quantity of system memory allocated by the BIOS and the maximum limit cannot be modified by the user.

30 Evo D310 Micro Desktop

Page 29 Page 31
Image 30
Page 29 Page 31
Contents Technical reference manual Page Information Roadmap Installing, Configuring and UpgradingTroubleshooting Discover and use your productSystem recovery cd-roms Your computer’s online informationInformation on the hp support web site Finding Information Type of Information LocationBibliography Intel Chipsets developer.intel.comTable of Contents Serviceability System Overview System Features System OverviewDescription Package Features Rear ConnectorsFront Panel Inside the PC Rear ViewAGP Graphic card available as an option Environmental Specifications SpecificationsPhysical Characteristics Acoustic Noise EmissionPower Consumption System Features System Features System Board LayoutSystem Board Components Main Features ChipsetIntel 845G System Block Diagram Processor Intel Pentium 4 SocketIntel Celeron Socket Main Memory Dimm slotsAccessory Board Slots PCI Slot NumbersSystem Board Switches FunctionUltra-ATA/100 Hard Disk Drives Hard Disk DrivesFloppy Disk Drives 20GB 40GB 80GBCD-RW Technology Features of the CD-RW DriveOptical Drives Writing CD-R 10 = 1,500 KB/s MaxFeatures of the DVD-ROM Drive Digital Versatile Disk DVD Technology Audio features of DVD-Video DVD Region CodesRegion Features of the CD-ROM Drive Intel 845G Chipset Integrated Graphics Key FeaturesGraphics Memory Usage with Dynamic Video Memory TechnologyATI Radeon Supported ResolutionsResolutions Refresh Rates 65K colors 1920x1440 16.7M colors 1920x1200Hdvi to VGA adapter 65K colors 2048x1536 16.7M colorsAudio Analog Devices AD1981ALAN Controller LAN Connector Description Status Flashing OffUSB 2.0 Connectors Serviceability How to remove the DVD CD-RW, or CD-ROM drive ServiceabilityHow to rotate Drive bay upwards Evo D310 Micro DesktopBios Overview Bios Summary Entering the Configuration and Diagnostics menuBios Overview Advanced Menu Using the PC Setup ProgramMain Menu Security MenuBoot Menu Power MenuExit Menu Power Management and Wake Up Events Wake Up EventBios Addresses System Memory MapHP I/O Port Map I/O Addresses Used by the System Bios Overview Address Ports Function DMA Channel ControllersWindows 2000 and Windows XP Bios Overview DMA controllerInterrupt Controllers Interrupt Request DescriptionPost Tests PCI Interrupt Request LinesFloppy read error Main Bios runtime code is to be decompressedTo enable floppy and timer IRQ, enable internal cache Start searching AMIBOOT.ROM file in root directoryGoing for monochrome mode and color mode setting To do any setup before Int vector initAny initialization before setting video mode to be done Video display checking over. Display mode to be set nextGoing for hard disk controller reset Password checked. About to do programming before setupSetup options programming after Cmos setup about to start Floppy setup complete. Hard disk setup to be done nextTo uncompress DMI data and execute DMI Post init System configuration is displayedTo build MP table if needed Going to copy any code to specific areaHP e-DiagTools Preboot Diagnostics Beep Codes MeaningDrivers and Software Software Drivers SoftwareOperating System DiagToolsBios Updates Evo D310 Micro Desktop Page Created in France Date 06/2002
Top Page Image Contents