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Chapter 2
On-Chip IDE Control
The chipset contains a PCI IDE interface with support for two IDE channels.
Select "Enabled" to activate the first and / or second IDE interface. If you install a
primary and / or secondary add-in IDE interface, select "Disabled" to deactivate an
interface. If you highlight the literal "Press Enter" next to the "Onchip IDE
Control" label and then press the enter key, it will take you a submenu with the
following options:
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 Choices: Enabled (default), Disabled.
IDE Primary / Secondary Master / Slave PIO
The IDE PIO (Programmed Input / Output) fields let you set a PIO mode
(0-4) for each of the IDE devices that the onboard IDE interface supports.
Modes 0 through 4 provides successively increased performance. In Auto
mode, the system automatically determines the best mode for each
device.
The Choices: Auto (default), Mode0, Mode1, Mode2, Mode3, Mode4.
IDE Primary / Secondary Master / Slave UDMA
Ultra DMA/100 functionality can be implemented if it is supported by
the IDE hard drives in your system. As well, your operating environment
requires a DMA driver (Windows 95 OSR2 or a third party IDE bus
master driver). If your hard drive and your system software both support
Ultra DMA/100, select Auto to enable BIOS support.
The Choices: Auto (default), Disabled.
IDE HDD Block Mode
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 mode (most new drives do), select Enabled for
automatic detection of the optimal number of block read / write per
sector where the drive can support.
The Choices: Enabled (default), Disabled.
2-17
BIOS Setup
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