Air 486PH, User Manual, Page: 33 / 48

IDE Block Mode
Select Enabled to support some latest IDE hard disks that
supporting multiple sector data transfer for faster performance.
In Auto mode, the BIOS will detect if the IDE drives can handle
fast data transfer mode and then programs the controller
accordingly. The Optimal default setting is
Auto. The Fail-Safe
default setting is Disabled .
32-bit Xfer Primary Controller
This option is used to support the first IDE controller that can
support 32-bit data transfer by moving two consecutive words
per cycle, for better performance. Select Enabled if the
controller can support this mode, otherwise, set it to Disabled.
The Optimal and Fail-Safe settings are
Disabled .
Set LBA Primary Controller
Most of early IDE hard drives’ size are less than 528MB
because of the limitation from PC/AT standard specification. In
order to support more than 528MB, the Logical Block Access
(LBA) mapping mode must be used. When Primary IDE
controller card is installed, Select
Enabled for Master IDE hard
disk that supports LBA mode for larger than 528MB capacity.
The Optimal and Fail-Safe default setting are
Disabled .
Secondary Controller Setup
This option supports Second IDE controller present in the bus or
some IDE controllers that support dual IDE ports. The Optimal
and Fail-Safe default setting are
None .