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DA-682 Series Hardware User’s Manual
BIOS Setup
OnChip IDE Device
IDE HDD Block Mode
Block mode is otherwise known as block transfer, multiple commands, or multiple sector
read/write. Select the “Enabled” option if your IDE hard drive supports block mode (most new
drives do). The system will automatically determine the optimal number of blocks to read and
write per sector.
Options: Enabled (default), Disabled
On-Chip Channel 0/1 PCI IDE
This item lets users enable or disable the IDE channel.
Options: Disabled, Enabled (default)
IDE Channel 0/1 Master/Slave PIO
The IDE PIO (Programmed Input/Output) fields let you set a PIO mode (0-4) for each of the IDE
devices that the onboard IDE interface supports. Modes 0 to 4 will increase performance
incrementally. In Auto mode, the system automatically determines the best mode for each device.
Options: Auto (default), Mode0, Mode1, Mode2, Mode3, Mode4
IDE Channel 0/1 Master/Slave UDMA
Ultra DMA functionality can be implemented if it is supported by the IDE hard drives in your
system. Your operating environment also requires a DMA driver (Windows 95 OSR2 or a third
party IDE bus master driver). If your hard drive and your system software both support Ultra
DMA, select “Auto” to enable BIOS support.
Options: Auto (default), Disabled
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