BCM QS440VA User Manual download pdf (Page 47)

4. BIOS SETUP

system memory usually discusses their memory requirements.

4.5.4 Read Around write

This feature speeds up data read performance when it stays Enabled. The choices:

Enabled, Disabled (Default).

4.5.5 Current PCI/Host

If each bus master cycle does not take the same path, it allows the multiple bus master

cycles to be actived at the same time.

4.5.6 Video RAM Cacheable

Select Enabled allows caching of the video RAM, resulting in better system

performance. However, if any program writes to this memory area, a system error may

result.

4.5.7 AGP Aperture Size

Select 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. See www.agpforum.org for AGP information.

4.5.8 AGP-2X Mode

This feature allows user to select the AGP mode be to 1x or 2x when an AGP add-in

card installed. However, when set at Enabled and the AGP card only support 1x mode,

the system will fall back 1x mode automatically. The choices are: Enabled (Default),

Disabled.

4.5.9 OnChip USB

Select Enabled if your system contains a Universal Serial Bus(USB) controller. The

choices: Enabled, Disabled.

4.5.10 USB Keyboard Support

Select Enabled if your system contains a Universal Serial Bus (USB) controller and

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BCM QS440VA User Manual Page 47