User`s manual

SBC86822 Series All-In-One Mini ITX Board User’s Manual
Award BIOS Utility
56
CAS and RAS strobe signals, used when DRAM is written to, read
from, or refreshed.
z DRAM RAS# Precharge
The precharge time is the number of cycles it takes for the RAS to
accumulate its charge before DRAM refresh. If insufficient time is
allowed, refresh may be incomplete and the DRAM may fail to
retain data.
z Precharge Delay <tRAS>
The precharge time is the number of cycles it takes for DRAM to
accumulate its charge before refresh.
z System BIOS Cacheable
Selecting Enabled allows caching of the system BIOS ROM at
F0000h-FFFFFh, resulting in better system performance. However,
if any program writes to this memory area, a system error may
result. The default value is “Disabled”.
z Video BIOS Cacheable
This item allows you to change the Video BIOS location from ROM
to RAM. Video Shadow will increase the video speed.
z Memory Hole At 15M-16M
Enabling this feature reserves 15MB to 16MB memory address
space to ISA expansion cards that specifically require this setting.
This makes the memory from 15MB and up unavailable to the
system. Expansion cards can only access memory up to 16MB.
*** VGA Setting ***
z PEG Force X1
This BIOS feature allows you to convert a PCI Express X16 slot
into a PCI Express X1 slot. When this item is enabled, the PCI
Express X16 slot will be forced to run in the PCI Express X1 mode.
When this item is disabled, the PCI Express X16 slot will be
allowed to run its normal PCI Express X16 mode.
z On-Chip Frame Buffer Size
Use this item to set the VGA frame buffer size.
z DVMT Mode
DVMT (Dynamic Video Memory Technology) helps you select the
video mode.