Acer AM1640-ED2160A Technical Information download pdf (Page 39)

The following table describes the parameters found in this menu.

Parameter Description Options

IDE

Primary/Second

ary

Master/Slave

PIO

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.

On-Chip IDE

First/Second

Channel

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.

[Enabled],

[Disabled]

IDE

Primary/Second

ary

Master/Slave

UDMA

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.

IDE DMA

Transfer Access

This category allows you to enable or disable DMA

transfer access of IDE device (or IDE HDD)

[Enabled],

[Disabled]

SATA 1/2 Enable/Disable Serial-ATA 1 or Serial-ATA-2. SATA 1

control port 1 and 3, SATA 2 control port 2 and 4.

IDE Prefetch

Mode

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.

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Acer AM1640-ED2160A Technical Information Page 39

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