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H8DI3+/I+(-F) Serverboard User’s Manual
Block (Multi-Sector Transfer)
Block mode boosts IDE drive performance by increasing the amount of data
transferred. Only 512 bytes of data can be transferred per interrupt if block
mode is not used. Block mode allows transfers of up to 64 KB per interrupt.
Select "Disabled" to allow the data to be transferred from and to the device
one sector at a time. Select "Auto" to allows the data transfer from and to the
device occur multiple sectors at a time if the device supports it. The options
are Auto and Disabled.
PIO Mode
PIO (Programmable I/O) mode programs timing cycles between the IDE
drive and the programmable IDE controller. As the PIO mode increases, the
cycle time decreases. The options are Auto, 0, 1, 2, 3, and 4. Select Auto to
allow BIOS to auto detect the PIO mode. Use this value if the IDE disk drive
support cannot be determined. Select 0 to allow BIOS to use PIO mode 0,
which has a data transfer rate of 3.3 MBs. Select 1 to allow BIOS to use PIO
mode 1, which has a data transfer rate of 5.2 MBs. Select 2 to allow BIOS
to use PIO mode 2, which has a data transfer rate of 8.3 MBs. Select 3 to
allow BIOS to use PIO mode 3, which has a data transfer rate of 11.1 MBs.
Select 4 to allow BIOS to use PIO mode 4, which has a data transfer rate of
16.6 MBs. This setting generally works with all hard disk drives manufactured
after 1999. For other disk drives, such as IDE CD-ROM drives, check the
specifi cations of the drive.
DMA Mode
Selects the DMA Mode. Options are Auto, SWDMA0, SWDMA1, SWDMA2,
MWDMA0. MDWDMA1, MWDMA2, UDMA0. UDMA1, UDMA2, UDMA3,
UDMA4 and UDMA5. (SWDMA=Single Word DMA, MWDMA=Multi Word
DMA, UDMA=UltraDMA.)
S.M.A.R.T.
Self-Monitoring Analysis and Reporting Technology (SMART) can help predict
impending drive failures. Select "Auto" to allow BIOS to auto detect hard
disk drive support. Select "Disabled" to prevent AMI BIOS from using the
S.M.A.R.T. Select "Enabled" to allow AMI BIOS to use the S.M.A.R.T. to sup-
port hard drive disk. The options are Disabled, Enabled, and Auto.
32-Bit Data Transfer
Select "Enabled" to activate the function of 32-Bit data transfer. Select "Dis-
abled" to deactivate the function. The options are Enabled and Disabled.