Before installing Intel® EMGD, you must first configure the system BIOS. The following sections describe the required settings. These descriptions are based on AMIBIOS8* from American Megatrends, Inc., which is the recommended system BIOS to use with Intel® EMGD. Settings may vary if a different system BIOS is used.
The PCIe Device Enabling feature on the Graphics and Memory Controller Hub (GMCH) should be set as specified in the table below.
Table 19. GMCH Device 2, Function 1 BIOS Setting
The System BIOS typically allows a portion of physical memory to be dedicated to firmware and graphics driver use. This dedicated memory is known as stolen memory since it is not available to the operating system. The size of this memory is selectable and chipset-specific. Stolen memory is typically used by the firmware and graphics driver to locate the framebuffer, but can also be used as scratch and surface memory. Because it is programmatically set aside during boot by the System BIOS, access to it is direct and does not require OS memory allocation services. Firmware is fully responsible for stolen memory management.
Graphics Mode Select (GMS), or stolen memory, can be set to any of the sizes listed in the table below. Smaller sizes limit the framebuffer size during firmware boot. Larger sizes marginally increase surface allocation performance for the graphics driver.
AGP (Accelerated Graphics Port) Aperture Size
The AGP Aperture size controls the total amount of graphics memory that can be mapped in the AGP Aperture. This value can be set from 64 MB up to 256 MB, depending on the chipset. Refer to specific chipset details for information on the valid range.