Abit KG7-RAID User Manual page 45

Introducing the BIOS
DDR CLK/CS Configuration (DDR Clock/Chip Select Configuration):
Two options are available: Auto or Manual. The default setting is Auto. It is recommended this field be
set at Auto in order to avoid any errors in your system.
" CLK RiseEdge SlewRate:
Eight options are available: 0 ) 1 ) 2 ) 3 ) 4 ) 5 ) 6 ) 7. The default setting is 5, the smaller
the number the slower the speed.
" CLK FallEdge SlewRate:
Eight options are available: 0 ) 1 ) 2 ) 3 ) 4 ) 5 ) 6 ) 7. The default setting is 5, the smaller
the number the slower the speed.
" CLK P Drive Strength (Clocks P Transistor Drive Strength):
Four options are available: 0 ) 1 ) 2 ) 3. The default setting is 3, the smaller the number the
weaker the drive strength.
" CLK N Drive Strength (Clocks N Transistor Drive Strength):
Four options are available: 0 ) 1 ) 2 ) 3. The default setting is 2, the smaller the number the
weaker the drive strength.
AGP Aperture Size (MB):
Four options are available: 32 ) 64 ) 128 ) 256 ) Back to 32. The default setting is 64. 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 to graphics memory addresses. Host cycles that hit the aperture
range are forwarded to the AGP without any translation. See
AGP ISA Aliasing:
Two options are available: Enabled or Disabled. The default setting is Enabled. When set to Enabled, the
AGP virtual address space size register bit 16 will force IGD4 to alias ISA address, which means that
address bit [15:10] are not used in decoding. When set to Disabled, no ISA aliasing is performed and
address bit [15:10] are used for decoding.
AGP Secondary Lat Timer:
Seven options are available: 00h ) 20h ) 40h ) 60h ) 80h ) C0h ) FFh ) Back to 00h. The
default setting is 20h. Choose the address to the definition of the latency timer in the PCI Local Bus Spec.
But this only applies to the secondary interface of a PCI to PCI bridge.
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 Data Transfer Mode:
Two options are available: 2x or 4x. The default setting is 2x. If you use the older AGP adapter that does
not support AGP 4X mode, you need to set this item to 2x.
www.agpforum.org for AGP information.
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User's Manual