Tyan Computer S1854 - Manual (Page 48)

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48
Video RAM Cacheable
Increases video performance by caching video memory.
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.
AGP Driving Control
Due to the compatibility of some AGP cards with the chipset this setting is
used to fine tune these issues. Default is set to Manual.
AGP Driving Value
This is the value set for the AGP Driving control. The manufacturers recom-
mended setting is set to CC and it is suggested not to change this value.
AGP-4x Mode
Enables the 4X AGP mode for higher AGP throughput. A 4X AGP graphics
card is required to enable this function.
Due to Tyan’s commitment to advanced technologies and first to market, not
all high performance 4X AGP graphics cards are compatible w/ our S1854 at the
time of print, please go to our web site for the latest update.
http://www.tyan.com/products/html/s1854_graphics.html
OnChip USB
The chipset contains an integrated USB controller. Select Enabled if you have
USB peripherals.
USB Keyboard Support
This function enables the use of a USB Keyboard. Default is Disabled.
Auto Detect DIMM/PC2 CLK
This function enables the BIOS to auto-detect the speed of the DIMM.
CPU Clock/Spread Spectrum
This function allows you to change the CPU clock frequency and to Enable/
Disable the Spread Spectrum function which lowers EMI levels.
Chapter 3
BIOS Configuration