AOpen AP53 User Manual page 41

Block Mode
This function enhanced disk performance depending on the hard disk in use. If
enabled, it allows data transfers in block (multiple sectors) by increasing the
data transfer rate to 256 bytes/cycle. However, if your hard disk does not
support this function, set this parameter to
This parameter becomes nonconfigurable when the HDD Type parameter is set
Auto
to .
32-bit Mode
Enabling this parameter improves system performance by increasing the hard
disk access to 32-bit mode. However, make sure that your hard disk supports
this function before you enable the parameter. Otherwise, set this parameter to
Off
.
PIO Mode
Setting this parameter to
If your hard disk does not support the PIO mode feature, set this parameter to
Off .
This parameter becomes nonconfigurable when the HDD Type parameter is set
to Auto .
Off
On allows the system to use a faster hard disk drive.
AMI BIOS Utility
.
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