Asus SP98AGP-X User Manual page 45

IV. BIOS SOFTWARE
Graphics Aperture Size (64MB) (Leave on default setting of 64MB)
Memory-mapped, graphics data structures can reside in a Graphics Aperture.
Memory Hole at Address (None)
This features reserves either 12MB-16MB, 14MB-16MB, or 15MB-16MB memory
address space to ISA expansion cards that specifically require this setting. Memory
from either 12MB and up, 14MB and up, or 15MB and up will be unavailable to the
system because expansion cards can only access memory up to 16MB.
Refresh Queue Depth (12)
This function sets the DRAM refresh rate. A slow refresh cycle time increases the
bandwidth available for data transfers. NOTE: Some DRAMs are known to lose
data without frequent refreshing so the default is set at 0.
Delayed Transaction (Enabled)
The default setting of Enabled frees the PCI Bus during CPU accessing of 8-bit ISA
cards, which normally consume about 50–60 PCI clocks without PCI delayed trans-
action. For PCI bus masters that cannot use the PCI Bus and some ISA cards that are
not PCI 2.1 compliant, set this to Disabled.
DRAM are 64 (Not 72) bits wide
This motherboard does not have parity support, thus DRAM modules are always 64
bits wide.
Data Integrity Mode (None)
The setting None has byte-wise write capability but no provision for protecting data
integrity in the DRAM array. You can enable the ECC function if ECC-supported
DIMM is used. (See section III for more information on memory modules.)
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Onboard FDC Controller (Enabled)
When enabled, this field allows you to connect your floppy disk drives to the on-
board floppy drive connector instead of a separate controller card. If you want to use
a different controller card to connect the floppy drives, set this field to Disabled.
Onboard FDC Swap A & B (No Swap)
This field allows you to reverse the hardware drive letter assignments of your floppy
disk drives through the onboard chipset. If you want to switch drive letter assign-
ments, set this field to Swap AB. Default setting is No Swap.
Onboard Serial Port 1 (3F8H/IRQ4) and Onboard Serial Port 2 (2F8H/IRQ3)
Settings are 3F8H/IRQ4, 2F8H/IRQ3, 3E8H/IRQ4, 2E8H/IRQ10, and Disabled for
the onboard serial connectors. Default setting for Serial Port 1 is 3F8H/IRQ4, while
for Serial Port 2 is 2F8H/IRQ3.
ASUS SP98AGP-X User's Manual 45