P4X MAINBOARD SERIES
Page 33
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AGP Aperture Size
This field selects the size of the Accelerated Graphics Port (AGP) aperture.
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. The default is 64MB. You may
increase this memory when you need to have faster access for 3D graphics
applications (e.g. games).
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AGP Mode
This item allows you to select 1x, 2x or 4x AGP mode.
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AGP Driving Control
The recommended setting for this field is the default “Auto”. If you have an
unstable AGP card you may use this field to choose the appropriate settings.
If you do need to tune the timing, please consult your AGP Card manual or
Vendor.
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AGP Driving Value
This item allows you to adjust the AGP driving force.
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AGP Fast Write
Some AGP cards, like G-Force, support AGP fast write. If you have an AGP
card that supports this mode you can enable this field. If your AGP card does
not support the fast write mode then leave this field “disabled”.
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AGP Master 1 WS Write
When Enabled, writes to the AGP are executed with one-wait states.
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AGP Master 1 WS Read
When Enabled, reads to the AGP are executed with one-wait states.
CPU & PCI Bus Control
CPU to PCI Write Buffer [Enabled]
PCI Master 0 WS Write [Enabled]
PCI Delay Transaction [Disabled]
Item Help
Menu Level
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CMOS Setup Utility - Copyright (C) 1984 - 2001 Award Software
CPU & PCI Bus Control
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CPU to PCI Write Buffer
When you enable this option writes from the CPU to the PCI bus are buffered
so that the CPU will not have to wait until the write is completed before start-
ing another write cycle.
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PCI Master 0 WS Write
When enabled, writes to the PCI bus are executed with zero wait states.
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PCI Delay Transaction
The chipset has an embedded 32-bit posted write buffer to support delay
transactions cycles. Select Enabled to support compliance with PCI
specification version 2.1.
Managing The PC BIOS
