Intel 82830M GMCH, 82854 GMCH Configuration Information, Display Driver Options, Display Options

4 Configuration Information

The display driver and TV Encoder DLL configuration use registry settings found in video.reg. The following sections describe the available options. This section is a companion to, and not a replacement for, video.reg. See video.reg for acceptable values and default values for each of the options described below.

4.1Display Driver Options

4.1.1Display Options

The display options configure the display resolution and mode.

[HKEY_LOCAL_MACHINE\System\GDI\Drivers]

Display

This key is set to ddi_iceg.dll to enable GWES to load our display driver.

[HKEY_LOCAL_MACHINE\Drivers\Display\Intel]

Width <DWORD>

Requested width of the frame buffer – in pixels.

Height <DWORD>

Requested height of the frame buffer – in active lines.

Depth <DWORD>

Requested pixel depth of the frame buffer – in bits per pixel.

Refresh <DWORD>

Requested rate at which the frame buffer is sent out from the GMCH to the output port.

DVOScanMode <DWORD>

Bit Field that specifies which timing table flags to preset when matching compatible timing settings in port-driver timing tables. Available flags are (Interlaced, Pixel Double, and Line Double). This value should be set to 0x03 (that is, Interlaced and Pixel Doubled output) when specifying 480i/576i HDMI only mode. It should be set to 0x01 (Interlaced) when setting 1080i mode for any TV encoder.

DigitalPort <DWORD>

This key determines the display configuration – analog-only (VGA), DVO-only, or twin.

SetHead <DWORD>

This key determines the port (analog (VGA) or digital) that controls the timing information. For analog-only (VGA), analog (VGA) should be selected. For DVO-only and twin, digital should be selected.

ConfigId <DWORD>

This key can be used to support multiple configurations and select the configuration. Typically, one configuration is used and this key has a value of 1 to select that configuration.

PowerMgmtShutdownDelay<DWORD>

This key can be used to delay powering down the display when Windows CE is suspended. The value is in milliseconds, and the default value is 0.

14Intel® Digital Set Top Box Display Driver User’s Guide for Microsoft* Windows* CE 5.0