Intel 82854 GMCH, 82830M GMCH manual Port Driver TV Encoder DLL Attributes

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4.2Port Driver (TV Encoder DLL) Attributes

Port driver (TV Encoder DLL) attributes are used if the display type is either DVO-only or Twin. In that case, the display driver reads port driver attribute settings from the registry, tests their values, and if they are valid, passes them to the port driver during initialization. Port driver attributes have Boolean, range, String, or list types. Boolean attributes values must be 0 or 1. Range attributes must match the minimum, maximum, or an internal value computed using the step – similar to a “for” loop in C Language “for (valid = min; valid <= max, valid += step)”. String values are typically read-only. List values must match one of the list entries.

If an attribute name does not match a supported attribute or if an out of range value is used, the display driver will fail to load and this will result in a GWES exception.

Port driver attributes are set at the following key:

[HKEY_LOCAL_MACHINE\Drivers\Display\Intel\Param\Attr]

4.2.1Port Driver Attribute Notes

Note: If an attribute name does not match a supported attribute, or if an out of range value is used, the display driver will fail to load and this will result in a GWES exception.

Note: The port drivers include a TV Format attribute. Please note that changing this attribute at run-time is not supported in the display driver.

4.2.2Conexant Port Driver Attributes

See the configuration file video.reg for information on the Conexant port driver attributes. Look for details in the section entitled “Conexant CX25873/CX25892 port attributes”. Contact Conexant for more information on the Conexant port driver.

Intel® Digital Set Top Box Display Driver

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User’s Guide for Microsoft* Windows* CE 5.0

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Contents Intel Digital Set Top Box Display Driver Legal Statements Contents Hardware Limitations Date Driver Description Revision HistoryThis page intentionally left blank Introduction DefinitionsDefinitions Feature Summary Base FeaturesGMCHs Surface Support 2 830 and 854 Base FeaturesDisplay Configuration VBI Support Display Configuration NotesTV Encoders Direct3D Mobile SupportInstalling the MSI Installation NotesDisplay Driver MSI 1 830 MSIRegistry Options Driver FilesConfiguration Information Display Driver OptionsDisplay Options VRWorkaroundModeDWORD AlphaBlendModeDWORDPort Driver TV Encoder DLL Options Memory Management Options SysToVidStretch Dword 4 2D Graphics OptionsBlendFilter Dword BlitSyncVBI DwordVideo Options GDI OptionsForceGRAY16 Dword MaxBackBuffers DwordDirect3D Mobile Options Port Driver Attribute Notes Conexant Port Driver Attributes Port Driver TV Encoder DLL AttributesSilicon Image Port Driver Attributes Focus Port Driver AttributesDefault Configuration Configuration1 830 Default Configuration 2 854 ConfigurationChanging the TV Format to PAL-B Configuration ChangesChanging the TV Output Type to Component Enabling 3D SupportHdmi Support Single, Shadow DVO Modes Hardware Limitations 830 Chipset Limitations854 Chipset Limitations WinCE Graphics Driver Escape Interface Programming InterfaceSummary of Supported Graphics Driver Escape Codes Input Data Structure Output Data Structure IcegdescapeenableportIcegdescapegetnumpdattributes Icegdescapegetavailpdattributes Icegdescapegetavailpdattributes IcegdescapesetpdattributesIcegdescapegetnumpdattributes Null Icegdescapesetovlcolorparams Icegdescapesetfbgammaramp Icegdescapegetmemstats Icegdescapegetmonitordesc Icegdescapevbienable Icegdescapevbidisable Icegdescapevbiupdate Sleep33 Disable vbi ExtEscape Hdc Icegdescapeinterruptinstall Icegdescapeinterruptuninstall Icegdescapesetvideoplanezorder Icegdescapesethwalphacompatmode Icegdescapedriverversion ICEGDESCAPEI2CCONFIG ICEGDESCAPEI2CACCESS Page This escape code is used to select a DVO port master/slave Icegdescapequeryhdmihotplug Null IcegdescapequeryhdmihotplugIcegdescapewaithdmihotplug Null IcegdescapewaithdmihotplugIcegdescapesetscaninfo

82830M GMCH, 82854 GMCH specifications

The Intel 82854 GMCH (Graphics Memory Controller Hub) and the Intel 82830M GMCH are integral components in the architecture of Intel's mobile chipsets, designed to enhance performance and efficiency in laptop and portable computing environments. These chipsets play a crucial role in managing the interactions between the CPU, memory, and graphics, thus impacting overall system performance.

The Intel 82854 GMCH, launched as part of the 855 chipset family, primarily targets mobile laptops and portable devices. A key feature of the 82854 is its support for DDR SDRAM, which improves memory bandwidth and enhances data transfer rates. This chipset is also notable for its integration of graphics capabilities through Intel Graphics Media Accelerator 900. This integration allows for better power management and reduced physical space requirements, making it suitable for compact laptop designs.

Another significant characteristic of the 82854 GMCH is its support for Intel SpeedStep technology, which optimizes power consumption by dynamically adjusting the processor voltage and frequency according to the workload. This capability is essential for prolonging battery life in portable systems without compromising performance during demanding tasks. The chipset also includes support for up to 2GB of memory, catering to the requirements of most mobile applications at the time of its release.

The Intel 82830M GMCH, on the other hand, was part of the 855PM chipset family and is targeted primarily at mainstream laptops. It offers similar features in terms of integrated graphics with the Intel Graphics Media Accelerator. However, it also extends support for advanced features such as the 533 MHz front-side bus, which facilitates quicker data transfer between the CPU and memory.

Key technologies associated with the 82830M GMCH include the Enhanced Intel SpeedStep Technology, which further enhances power management capabilities beyond earlier iterations. By incorporating this technology, the chipset maximizes energy efficiency during various operational states, ensuring that users enjoy longer battery life without sacrificing system performance.

Both chipsets support PCI Express connectivity, providing a pathway for high-speed communication with other peripherals, improving overall system responsiveness. The integration of these technologies into the 82854 and 82830M GMCH models has made them integral to the development of mobile computing, allowing for powerful yet efficient laptop designs that meet the needs of users on the go.

In summary, the Intel 82854 GMCH and 82830M GMCH are foundational components that showcase Intel's commitment to enhancing mobile computing through robust memory and graphics management, advanced power-saving technologies, and seamless integration with modern peripherals. Their influence extends through the generations of mobile devices, reflecting the ongoing innovations within Intel's chipset developments.
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