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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. The choice: Auto,
Mode 0, Mode 1, Mode 2, Mode 3, and
Mode 4.
Primary Master/Slave UltraDMA
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. The choice: Auto,
Disabled.
IDE Burst Mode
Selecting Enabled
reduces latency
between each drive read/write cycle, but
may cause instability in IDE subsystems
that cannot support such fast performance.
If you are getting disk drive errors, try
setting this value to Disabled
.
This field
does not appear when the Internal
PCI/IDE field, above, is Disabled. The
choice: Enabled, Disabled.
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