Abit BE6 User Manual page 60

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Ultra DMA is a DMA data transfer protocol that utilizes ATA commands and the ATA
bus to allow DMA commands to transfer data at a maximum burst rate of 33 MB/sec.
Auto: When you select Auto, the system automatically determines the optimal
data transfer rate for each IDE device. (Default)
Disabled: If you encounter the problem of using Ultra DMA devices, you can try to
Disable this item.
Slave Drive Ultra DMA:
Auto: When you select Auto, the system automatically determines the optimal
data transfer rate for each IDE device. (Default)
Disabled: If you encounter the problem of using Ultra DMA devices, you can try to
Disable this item.
Onboard IDE-2 Controller:
The onboard IDE-2 controller can be set at Enabled or Disabled.
Master Drive PIO Mode:
Auto: The BIOS can auto-detect the transfer mode of the IDE devices in order to set
its data transfer rate. (Default)
You can select the PIO mode from 0 to 4 of the IDE devices in order to set its data
transfer rate.
Slave Drive PIO Mode:
Auto: The BIOS can auto-detect the transfer mode of the IDE devices in order to set
its data transfer rate. (Default)
You can select the PIO mode from 0 to 4 of the IDE devices in order to set its data
transfer rate.
Master Drive Ultra DMA:
Ultra DMA is a DMA data transfer protocol that utilizes ATA commands and the ATA
bus to allow DMA commands to transfer data at a maximum burst rate of 33 MB/sec.
Auto: When you select Auto, the system automatically determines the optimal
data transfer rate for each IDE device. (Default)
Disabled: If you encounter a problem using Ultra DMA devices, you can try to
Disable this item.
BE6
Chapter3