AMD KT600, User Manual, Page: 49 / 94

BIOS
Page 4-13
VIA OnChip IDE Device
Scroll to VIA Onchip IDE Device and press <Enter>. The following screen appears:
IDE DMA transfer access
Automatic data transfer between system memory and IDE device with minimum CPU
intervention. This improves data throughput and frees CPU to perform other tasks.
Options: Enabled, Disabled.
OnChip IDE Channel0/1
The integrated peripheral controller contains an IDE interface with support for two
IDE channels. Select “Enabled” to activate each channel separately.
Options: Enabled, Disabled.
Note: If you do not use the onboard IDE connector, then you will need to set the
Onboard Primary PCI IDE and Onboard Secondary PCI IDE to “Disabled”.
IDE Prefetch Mode
Selecting Enabled reduces latency between each drive read/write cycle, but may
cause instability in IDE subsystems that cannot support such fast performance. If
you are getting disk drive errors, try setting this value to Disabled. This field does
not appear when the Internal PCI/IDE field, above, is Disabled.
Options: Enabled, Disabled.
Primary/Secondary Master/Slave PIO
The four IDE PIO (Programmed Input/Output) fields let you set a PIO mode (0-4) for
each of the four IDE devices that the onboard IDE interface supports. Modes 0 to 4
provide successively increased performance. In Auto mode, the system automati-
cally determines the best mode for each device.
Options: Auto, Mode 0 ~ 4.