Acer Aspire M5630 Service Manual page 42

The following table describes the parameters found in this menu.
Parameter
IDE
Primary/Second
ary
Master/Slave
PIO
On-Chip IDE
First/Second
Channel
IDE
Primary/Second
ary
Master/Slave
UDMA
IDE DMA
Transfer Access
SATA 1/2
IDE Prefetch
Mode
Description
The four IDE PIO 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
increased performance. In Auto mode, the system
automatically determines the best mode for each
device.
The Chipset contains a PCI IDE interface with support
for two IDE channels. Select Enabled to activate the
first and/or second IDE interface. Select Disabled to
deactivate an interface, if you install a primary and/or
secondary add-in IDE interface.
UDMA (Ultra DMA) is a DMA data transfer protocol
that utilized ATA transfer protocol that utilizes ATA
commands and the ATA bus to allow DMA commands
to transfer data ata 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.
This category allows you to enable or disable DMA
transfer access of IDE device (or IDE HDD)
Enable/Disable Serial-ATA 1 or Serial-ATA-2. SATA 1
control port 1 and 3, SATA 2 control port 2 and 4.
The onboard IDE drive interfaces 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.
Options
[Enabled],
[Disabled]
[Enabled],
[Disabled]
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