DFI P5XV3 User Manual page 56

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P5XV3 System Board User's Manual
Onboard Primary PCI IDE and Onboard Secondary PCI IDE
These categories allow you to enable or disable the primary and
secondary IDE controller. The default is Enabled. Select Disabled if
you want to add a different hard drive controller.
IDE Prefetch Mode
This allows data and addresses to be stored in the internal buffer
of the chip, thus reducing access time. Enable this field to achieve
better performance.
IDE HDD Block Mode
Enabled The IDE HDD uses the block mode. The system BIOS
Disabled The IDE HDD uses the standard mode.
IDE Primary Master/Slave PIO and IDE Secondary Master/Slave
PIO
PIO means Programmed Input/Output. Rather than have the BIOS
issue a series of commands to effect a transfer to or from the disk
drive, PIO allows the BIOS to tell the controller what it wants and
then let the controller and the CPU perform the complete task by
themselves. Your system supports five modes, 0 (default) to 4, which
primarily differ in timing. When Auto is selected, the BIOS will select
the best available mode after checking your drive.
Auto The BIOS will automatically set the system according to
your hard disk drive's timing.
0-4 You can select a mode that matches your hard disk drive's
timing. Caution: Do not use the wrong setting or you will
have drive errors.
IDE Primary Master/Slave UDMA and IDE Secondary Master/
Slave UDMA
These categories allow you to set the Ultra DMA in use. When Auto
is selected, the BIOS will select the best available option after
checking your hard drive or CD-ROM.
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will check the hard disk drive for the maximum block
size the system can transfer. The block size will depend
on the type of hard disk drive.