Per Port Customization — Attribute Initialization

Attributes are also per config and per port. However, the actual keys are dependent on the port driver being used. Below are examples of registry keys associated with initializing attributes for the Chrontel Port Driver.

For complete information on port driver attributes, refer to Port Driver Attributes.

Note: For Per-Config, Per-Port configuration, the subkey path includes the correct “Config” and “Port” numbers.

The following example sets the port driver attributes using the attribute IDs. Please see Table 21. Parameter Configuration Format for a list of attribute IDs and their meanings.

[HKEY_LOCAL_MACHINE\Drivers\Display\Intel\ALL\1\Port\1\Attr]

“0”=dword:32

“1”=dword:4

“3”=dword:1

“8”=dword:1

“12”=dword:0

“14”=dword:1

“19”=dword:1

Framebuffer Direct Access

Intel^® EMGD provides an option for direct access to the framebuffer during runtime through an escape function call INTEL_ESCAPE_GET_FB_INFO. This feature allows you to directly access the framebuffer for displaying a customized screen or image, such as for showing a customized blue screen.

Refer to the Intel^® Embedded Graphics Drivers, Intel^® Embedded Media and Graphics Driver, EFI Video Driver, and Video BIOS API Reference Manual for a detailed description of the INTEL_ESCAPE_GET_FB_INFO function call.