IEI Integration WAFER-LX v1.0 User Manual
Page 93
WAFER-LX User Manual
BIOS Menu 10: Integrated Peripherals
Master/Slave Drive PIO Mode [Auto]
PIO means Programmed Input/Output. Instead of constantly issuing BIOS commands to
facilitate I/O transfers to and from the hard disk drives, the PIO mode allows the BIOS to issue I/O
requests and let CPU and IDE controller to fulfill the requests. Four modes from 0 to 4 are
supported.
1.
IDE Primary Master PIO
2.
IDE Primary Slave PIO
3.
IDE Secondary Master PIO
4.
IDE Secondary Slave PIO
Auto (D
EFAULT
) Allows the computer to select the correct mode
0
PIO mode 0 selected with a maximum transfer rate of 3.3MBps
1
PIO mode 1 selected with a maximum transfer rate of 5.2MBps
2
PIO mode 2 selected with a maximum transfer rate of 8.3MBps
3
PIO mode 3 selected with a maximum transfer rate of 11.1MBps
4
PIO mode 4 selected with a maximum transfer rate of 16.6MBps
IDE Primary Master/Slave UDMA [Auto]
The Ultra DMA (UDMA) mode for the following HDDs can all be selected.
1. IDE Primary Master UDMA
2. IDE Primary Slave UDMA
3. IDE Secondary Master UDMA
4. IDE Secondary Slave UDMA
Auto
(D
EFAULT
)
Allows the computer to select the correct UDMA
Disabled
Disables the UDMA for the HDD device
IDE DMA transfer access [Enabled]
The IDE DMA transfer access option allows you to determine whether or not the IDE device
installed in the system will have a DMA device.
Disabled
The IDE HDD installed in the system will not have DMA
transfer access
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IEI
®
Technology, Corp.
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