Silicon Graphics Octane III User Manual page 47

How To Change the Configuration Data
Select Auto to allow the AMI BIOS to automatically detect the PIO mode. Use this value if the
IDE disk drive support cannot be determined.
Select 0 to allow the AMI BIOS to use PIO mode 0. It has a data transfer rate of 3.3 MBs.
Select 1 to allow the AMI BIOS to use PIO mode 1. It has a data transfer rate of 5.2 MBs.
Select 2 to allow the AMI BIOS to use PIO mode 2. It has a data transfer rate of 8.3 MBs.
Select 3 to allow the AMI BIOS to use PIO mode 3. It has a data transfer rate of 11.1 MBs.
Select 4 to allow the AMI BIOS to use PIO mode 4. It has a data transfer bandwidth of 32-Bits.
Select Enabled to enable 32-Bit data transfer.
• DMA Mode
Select Auto to allow the BIOS to automatically detect IDE DMA mode when the IDE disk drive
support cannot be determined.
Select SWDMA0 to allow the BIOS to use Single Word DMA mode 0. It has a data transfer rate
of 2.1 MBs.
Select SWDMA1 to allow the BIOS to use Single Word DMA mode 1. It has a data transfer rate
of 4.2 MBs.
Select SWDMA2 to allow the BIOS to use Single Word DMA mode 2. It has a data transfer rate
of 8.3 MBs.
Select MWDMA0 to allow the BIOS to use Multi Word DMA mode 0. It has a data transfer rate
of 4.2 MBs.
Select MWDMA1 to allow the BIOS to use Multi Word DMA mode 1. It has a data transfer rate
of 13.3 MBs.
Select MWDMA2 to allow the BIOS to use Multi-Word DMA mode 2. It has a data transfer rate
of 16.6 MBs.
Select UDMA0 to allow the BIOS to use Ultra DMA mode 0. It has a data transfer rate of 16.6
MBs. It has the same transfer rate as PIO mode 4 and Multi Word DMA mode 2.
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