User`s manual

AIMB-220
68 AIMB-220 User’s Manual
3.5.4 Integrated Peripherals
Use this menu to specify your settings for integrated peripherals.
Item Options Description
On-Chip IDE Channel 1
Enabled
Disabled
This item allows to enable On-chip IDE channel.
Master Drive PIO Mode
Slave Drive PIO Mode
Auto
Mode 0
Mode 1
Mode 2
Mode 3
Mode 4
The 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.
IDE Primary Master UDMA
IDE Primary Slave UDMA
Auto
Disabled
Ultra DMA 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 the hard drive and the system
software both support Ultra DMA, select Auto to
enable BIOS support.
IDE DMA Transfer
Enabled
Disabled
This feature allows you to enable or disable
DMA (Direct Memory Access) support for all
IDE devices. If you disable this BIOS feature,
the BIOS will disable DMA transfers for all IDE
drives. They will revert to PIO mode transfers. If
you enable this BIOS feature, the BIOS will
enable DMA transfers for all IDE drives. The
proper DMA mode will be detected at boot-up.
If the drive does not support DMA transfers,
then it will use PIO mode instead.
IDE HDD Block Mode
Enabled
Disabled
Block mode is also called block transfer,
multiple commands, or multiple sector
read/write. If the 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.