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Introducing the BIOS
User’s Manual
3-19
AGP Aperture Size:
Seven options are available: 256M ( 128M ( 64M ( 32M ( 16M ( 8M ( 4M (Back to 256M.
The default setting is 64M. This option specifies the amount of system memory that can be used by the
AGP device. The aperture is a portion of the PCI memory address range dedicated for graphics memory
address space. Host cycles that hit the aperture range are forwarded to the AGP without any translation.
See www.agpforum.org
for AGP information.
AGP Mode:
Two options are available: 4X ( 2X. The default setting is 4X (When you installed AGP 4X adapter). If
you use the older AGP adapter that does not support AGP 4X mode, BIOS will automatically set it to 2X.
AGP Driving Control:
Two options are available: Auto or Manual. The default setting is Auto. Choosing Manual to key in an
AGP Driving Value is described within the next section. It is recommended this field be set to Auto in
order to avoid any errors in your system.
AGP Driving Value:
This item allows you to adjust the AGP driving force. You can key in the HEX number into this section.
The minimum number is 0000, and maximum number is 00FF.
AGP Fast Write:
Two options are available: Disabled or Enabled. The default setting is Disabled. If your AGP adapter can
support this function, then you can choose Enabled. Otherwise, choose Disabled.
AGP Read Synchronization:
Two options are available: Disabled or Enabled. The default setting is Disabled. Thi sitem can set AGP
data read transaction to synchronization mode.
Enhance AGP Performance:
Two options are available: Disabled or Enabled. The default setting is Disabled. This item can improve
the AGP display performance.
AGP Master 1 WS Write:
Two options are available: Disabled or Enabled. The default setting is Disabled. This implements a single
delay when writing to the AGP Bus. When you set it to Enabled, two-wait states are used by the system,
allowing for greater stability.
AGP Master 1 WS Read:
Two options are available: Disabled or Enabled. The default setting is Disabled. This implements a single
delay when reading to the AGP Bus. When you set it to Enabled, two-wait states are used by the system,
allowing for greater stability.