Contec SPI-8450-LLVA - Manual (Page 98)

CHAPTER 8 - BIOS Setup
SPI-8450-LLVA
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Description Choice
On-Chip Primary PCI IDE
The integrated peripheral controller contains
an IDE interface with support for two IDE
channels. Select Enabled to activate each
channel separately.
IDE Primary Master/Slave PIO
The four IDE PIO (Programmed
Input/Output) fields let you set a PIO mode
(0-4) for each of the four IDE devices that the
onboard 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 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 Secondary PCI IDE
The integrated peripheral controller contains
an IDE interface with support for two IDE
channels. Select Enabled to activate each
channel separately.
IDE Secondary Master/Slave PIO
The four IDE PIO (Programmed
Input/Output) fields let you set a PIO mode
(0-4) for each of the four IDE devices that the
onboard IDE interface supports. Modes 0
through 4 provide successively increased
performance. In Auto mode, the system
automatically determines the best mode for
each device.