Tyan Computer S1854 - Manual (Page 58)

http://www.tyan.com
58
Chapter 3
BIOS Configuration
Settings Chart (Continued)
On-Chip PCI IDE First/Second Channel
This chipset contains a PCI IDE interface with support for two IDE channels.
Select Enabled to activate the primary and/or secondary onboard IDE interface.
Select Disabled to deactivate this interface, if you install a primary and/or
secondary add-in IDE interface.
IDE Prefetch Mode
The onboard IDE drive interface supports IDE prefetching for faster drive
accesses. If you install a primary and/or secondary add-in IDE interface, set
this field to Disabled if the interface does not support prefetching.
IDE Primary/Secondary Master/Slave PIO
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 successively increased performance. In
Auto mode, the system automatically determines the best mode for each
device.
IDE Primary/Secondary 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 66 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.
Init Display First
Select the type of display adapter used in your system.
Setting Options BIOS Default Setup Default
Onboard Serial Port 1 3F8 / IRQ4 3F8 / IRQ4
Onboard Serial Port 2 2F8 / IRQ3 2F8 / IRQ3
UART Mode Normal Normal
Onboard Parallel Port 378 / IRQ7 378 / IRQ7
Onboard Parallel Mode SPP SPP
PWRON After PWR-Fail Off Off