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8. BIOS Setup
60
SEH-9450-LAS
Description Choice
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.