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Chapter 3 Award BIOS Setup 71
The displayed configuration is based on the manufacturer's SETUP
DEFAULSTS settings.
IDE HDD Block Mode
Select Enabled only if your hard drives support block mode.
IDE PIO Modes (Primary Master/Slave)
The four IDE PIO (Programmed Input/Output) fields let you set a
PIO mode (0-4) for each of up to four IDE devices that the internal
PCI IDE interface supports. Modes 0 through 4 provide succes-
sively increased performance. In Auto mode, the system automati-
cally determines the best mode for each device.
IDE Primary Master/Slave UDMA
UDMA (Ultra DMA) is a DMA data transfer protocol that utilizes
ATA commands and the ATA bus to allow DMA commands to
transfer data at a maximum burst rate of 33 MB/s. When you select
Auto in the four IDE UDMA fields (for each of up to four IDE
devices that the internal PCI IDE interface supports), the system
automatically determines the optimal data transfer rate for each IDE
device.
On-Chip PCI IDE (Primary)
The Intel 82C440BX chipset contains a PCI IDE interface with
support for two IDE channels. Select Enabled to activate the
primary and/or secondary IDE interface. Select Disabled to deacti-
vate this interface, if you install a primary and/or secondary add-in
IDE interface.
USB Keyboard Support
Select Enabled if your system contains a Universal Serial Bus
(USB) controller and you have a USB keyboard.