IBM SBC-658 Computer Hardware User Manual


 
Chapter 3 Award BIOS Setup 73
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 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 system 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 deactivate this inter-
face, 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.
Onboard FDC Controller
Select Enabled if your system has a floppy disk controller (FDC)
installed on the system board and you wish to use it. If you install
an add-in FDC or the system has no floppy drive, select Disabled in
this field.
Onboard Serial Ports (1, 2)
Select a logical COM port address for the first and second serial
ports.