Contec Single Board Computer Half-size PICMG 1.3 with LAN, Audio, SATA SEH-9450-LAS User Manual page 66

8. BIOS Setup
Description Choice
IDE HDD Block mode
Block mode is also called block transfer, multiple commands,
or multiple sectors read/write. If your IDE hard drive
supports block mode (most new drives do), select Enabled for
automatic detection of the optimal number of block
read/writes per sector the drive can support.
IDE DMA transfer access
This item allow you to enable or disable the IDE DMA
transfer access.
On-Chip Primary PCI IDE
The integrated peripheral controller contains an IDE
interface with support for two IDE channels. Select
Enabled
to activate each channel separately.
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