Acorp VIA KT400A, Руководство пользователя

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Chapter 3
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AGP & P2P Bridge Control
1. AGP Aperture Size
This feature allows users to select the size of the AGP aperture. It also determines the
maximum amount of system RAM that can be allocated to the graphics card for texture
storage. The required AGP aperture size will become smaller as the graphics card’s
memory increases in size. But increase in size of the aperture does not correspond to
increase in performance. It is recommend that the AGP aperture size is left around
64MB to 128 MB in size unless instructed otherwise by your video card manufacturer.
2. AGP Mode
Available options: [4X], [2X] and [1X]
3. AGP Driving Control
The [ Manua l] setting allows you to manually select the AGP driving value. However, it
is recommended that you keep the default setting [ Auto ] to allow the system to
automatically determine the appropriate AGP driving value.
4. AGP Fast Write
Selecting [ Enabled ] to allow Fast Write Protocol for 4X/2X AGP to function.
5. AGP Master 1 WS Write/Read
It is recommended to keep the default setting for a stable system operation.
6. DBI Output for AGP Trans
Please leave the default setting [ Disabled ] for a stable system operation.
CPU & PCI Bus Control
1. PCI 1/2 Master 0 WS Write
When Enabled, writes to PCI bus are executed with zero wait states.
2. PCI 1/2 Post Write
Enabling this function will enhance the system efficiency.
3. Vlink 8x support
Enable this setting to utilize the 8X mode (twice as fast as 4X) offered by advanced AGP
cards. Your VGA card must support 8X mode in order to take advantage of the faster
speed.
4. 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.
Memory Hole
Enabling this function will reserve the memory address space between 15MB and 16MB
for ISA expansion cards. However, enabling this function will result in not allowing the
system to have access to memory above 16MB. Please note that some expansion cards
require this setting to be Enabled. The default setting is Disabled. If Auto Configuration