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11. AMI BIOS Configuration
11.3.2.10. PIO Mode
These fields allow your system IDE controller to work faster. Rather than have the BIOS issue a series of commands that
transfer to or from the IDE drive, PIO (Programmed Input/Output) allows the BIOS to communicate with the controller
and CPU directly.
The system supports five modes, numbered from 0 to 4, which primarily differ in timing. Available settings are: 0, 1, 2, 3,
4 and Auto . When Auto is selected, the BIOS will select the best available mode.
Available settings are: Auto , 0, 1, 2, 3 and 4.
This setting allows the BIOS to auto-detect the PIO mode. This setting is to be used if the IDE disk drive
Auto
cannot be determined.
0
This setting allows the BIOS to use the PIO mode 0. It has a data transfer rate of 3.3MBs.
1
This setting allows the BIOS to use the PIO mode 1. It has a data transfer rate of 5.2MBs.
2
This setting allows the BIOS to use the PIO mode 2. It has a data transfer rate of 8.3MBs.
3
This setting allows the BIOS to use the PIO mode 3. It has a data transfer rate of 11.1MBs.
This setting allows the BIOS to use the PIO mode 4. It has a data transfer rate of 16.6MBs. This setting
4
generally works with all hard disk drives manufactured after 1999. For other disk drive, such as IDE CD-
ROM drives, check the specifications of the drive.
Do not change the default setting " Auto ".
If some read and write failures occur, check the length and quality of the integrated device cable first or
set this option to a setting with a lower data transfer rate as specified for your device.
11.3.2.11. DMA Mode
This option allows you to select the DMA mode option (depending on the integrated device). Available settings are:
Auto , SWDMA0, SWDMA1, SWDMA2, MWDMA0, MWDMA1, MWDMA2, UDMA0, UDMA1, UDMA2, UDMA3, UDMA4,
UDMA5 and UDMA6.
Auto
If " Auto " is set, the BIOS auto-detects the DMA mode. This is the default setting.
SWDMA0
If " SWDMA0 " is set the BIOS uses the Single Word DMA mode 0. It has a data transfer rate of 2.1MBs.
SWDMA1
If " SWDMA1 " is set the BIOS uses the Single Word DMA mode 1. It has a data transfer rate of 4.2MBs.
SWDMA2
If " SWDMA2 " is set the BIOS uses the Single Word DMA mode 2. It has a data transfer rate of 8.3MBs.
MWDMA0
If " MWDMA0 " is set the BIOS uses the Multi Word DMA mode 0. It has a data transfer rate of 4.2MBs.
MWDMA1
If " MWDMA1 " is set the BIOS uses the Multi Word DMA mode 1. It has a data transfer rate of 13.3MBs.
MWDMA2
If " MWDMA2 " is set the BIOS uses the Multi Word DMA mode 2. It has a data transfer rate of 16.6MBs.
UDMA0
If " UDMA0 " is set the BIOS uses the Ultra DMA mode 0. It has a data transfer rate of 16.6MBs (the
same data transfer rate as PIO mode 4, and Multi Word DMA mode 2).
UDMA1
If " UDMA1 " is set the BIOS uses the Ultra DMA mode 1. It has a data transfer rate of 25MBs.
If " UDMA2 " is set the BIOS uses the Ultra DMA mode 2. It has a data transfer rate of 33.3MBs.
UDMA2
UDMA3
If " UDMA3 " is set the BIOS uses the Ultra DMA mode 3. It has a data transfer rate of 44.4MBs. It is
required to be used the 80-conductor ATA cable for this data transfer rate.
UDMA4
If " UDMA4 " is set the BIOS uses the Ultra DMA mode 4. It has a data transfer rate of 66.6MBs. It is
required to be used the 80-conductor ATA cable for this data transfer rate.
UDMA5
If " UDMA5 " is set the BIOS uses the Ultra DMA mode 5. It has a data transfer rate of 99.9MBs. It is
required to be used the 80-conductor ATA cable for this data transfer rate.
UDMA6
If " UDMA6 " is set the BIOS uses the Ultra DMA mode 6. It has a data transfer rate of 133.2MBs. It is
required to be used an 80-conductor ATA cable for this data transfer rate.
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PCI-960 – User's Manual (V1.02)
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