I/O Device Configuration - Asus P4S800-X User Manual

Video Memory Cache Mode [UC]
USWC (uncacheable, speculative write combining) is a new cache technology for
the video memory of the processor. It can greatly improve the display speed by
caching the display data. You must set this to UC (uncacheable) if your display
card does not support this feature, otherwise the system may not boot.
Configuration options: [UC] [USWC]
Delay Transaction [Enabled]
This field enables or disables the PCI delay transaction function.
Configuration options: [Disabled] [Enabled]
Onboard PCI IDE Enable [Both]
This field allows you to enable either the primary IDE channel or secondary IDE
channel, or both. You can also set both channels to [Disabled].
Configuration options: [Both] [Primary] [Secondary] [Disabled]
IDE Bus Master Support [Enabled]
This item controls the IDE Bus Master support for non-Windows operating
systems. Configuration options: [Disabled] [Enabled]

2.4.2 I/O Device Configuration

Floppy Disk Access Control [R/W]
When set to [Read Only], this parameter protects files from being copied to floppy
disks by allowing reads from, but not writes to, the floppy disk drive. The default
setting [R/W] allows both reads and writes. Configuration options: [R/W] [Read Only]
Onboard Serial Port 1 [3F8H/IRQ4]
This field allows you to set the addresses for the onboard serial connectors.
Configuration options: [3F8H/IRQ4] [2F8H/IRQ3] [3E8H/IRQ4] [2E8H/IRQ10]
[Disabled]
Onboard Parallel Port [378H/IRQ7]
This field allows you to set the address of the onboard parallel port connector. If
you disable this field, the Parallel Port Mode and ECP DMA Select configurations
are not available. Configuration options: [Disabled] [378H/IRQ7] [278H/IRQ5]
ASUS P4S800-X motherboard 2-17