Acnodes PC 8175, User Manual

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42 Appendix
PC 8175 User’s Manual
Block mode is also called block transfer, multiple
commands, or multiple sector read/write. If your IDE hard
drive supports block mode (most new drives do), select
Enabled for automatic detection of the optimal number of block
read/writes per sector the drive can support.
¤ IDE DMA transfer access
Automatic data transfer between system memory and IDE
device with minimum CPU intervention. This improves data
throughput and frees CPU to perform other tasks.
¤ On-Chip Primary/Secondary PCI IDE
The integrated peripheral controller contains an IDE
interface with support for two IDE channels. Select Enabled
to activate each channel separately. The default value is
“Enabled” .
NOTE: Choosing Disabled for these options
willautomatically remove the IDE rimaryMaster/Slave
PIO and/or IDE Secondary Master/Slave PIO items
on the menu.
¤ IDE 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 to 4 provide
successively increased performance. In Auto mode, the
system automatically determines the best mode for each
device.
¤ IDE Master/Slave UDMA
Select the mode of operation for the IDE drive. Ultra
DMA-33/66/100/133 implementation is possible only if your
IDE hard drive supports it and the operating environment
includes a DMA driver. If your hard drive and your system
software both support Ultra DMA-33/66/100/133, select
Auto to enable UDMA mode by BIOS.
Press <Esc> to return to the Integrated Peripherals page, and
press it again, return to the Main Menu page.
a
Onboard Device
Scroll to this item and press <Enter> to view the sub menu
Onboard Device.