Chapter 4
4-16
Primary/Secondary 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 settings are: Auto, Mode 0, Mode 1, Mode 2, Mode 3, Mode 4.
Primary/Secondary Master/Slave UDMA
Ultra DMA/33 implementation is possible only if your IDE hard drive
supports it and the operating environment includes 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/33 and Ultra DMA/66, select
Auto to enable BIOS support. The settings are: Auto, Disabled.
Init Display First
This item allows you to decide to activate whether PCI Slot or AGP
Slot. The settings are: PCI Slot, AGP Slot.
Onchip USB
This should be set to Enabled if your system has a USB installed on
the system board and you wish to use it. Even when so equipped, if you
add a higher performance controller, you will need to disable this feature.
USB Keyboard Support
Select Enabled if your system contains a Universal Serial Bus (USB)
controller and you have a USB keyboard. The settings are: Enabled,
Disabled.
USB Mouse Support
Select Enabled if your system contains a Universal Serial Bus (USB)
controller and you have a USB mouse. The settings are: Enabled, 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
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