Global American 3312400, Руководство пользователя

Страница: 31 / 53

AGP Aperture Size
Options : 4, 8, 16, 32, 64, 128, 256
This option selects the size of the AGP aperture. The aperture is a portion of
the PCI memory address range dedicated as graphics memory address space.
Host cycles that hit the aperture range are forwarded to the AGP without need
for translation. This size also determines the maximum amount of system RAM
that can be allocated to the graphics card for texture storage.
AGP Aperture size is set by the formula : maximum usable AGP memory size x
2 plus 12MB. That means that usable AGP memory size is less than half of
the AGP aperture size. That's because the system needs AGP memory
(uncached) plus an equal amount of write combined memory area and an
additional 12MB for virtual addressing. This is address space, not physical
memory used. The physical memory is allocated and released as needed only
when Direct3D makes a "create non-local surface" call.
AGP-4X Mode
Set to Enabled if your AGP card supports the 4X mode, which transfers video
data at 1066MB/s.
AGP Driving Control
This item is use for control AGP drive strength.
Auto: Setup AGP drive strength by default setting.
Manual: Setup AGP drive strength by manual setting.
AGP Driving Value
Key in a HEX number to control AGP output buffer drive strength.
Min = 00, Max = FF.
AGP Fast Write
To enable this function can increase VGA performance on graphic designed..
OnChip USB
If your system contains a Universal Serial Bus controller and you have a USB
peripheral, select Enabled. The next option will become available.
USB Legacy Support
Enable this item to support USB devices booting.
OnChip Sound
This menu can access the sound controller automaticlly
3312400 User's Manual 31