CP305 BIOS Advanced Setup
ID 1035-8356, Rev. 1.0 Page 23
P R E L I M I N A R Y
LBA/Large Mode
LBA (Logical Block Addressing) is a method of addressing data on a disk drive. In LBA mode,
the maximum drive capacity is 137 GB.
Note: For drive capacities over 137 GB, the BIOS must be equipped with 48-bit LBA
mode addressing. If not, install an ATA/133 IDE controller card that supports 48-bit
LBA mode or contact Kontron for further assistance.
Optimal and Fail-Safe default settings: Auto
Block (Multi-Sector Transfer)
This function sets the block mode multi-sector transfer feature.
Optimal and Fail-Safe default settings: Auto
PIO Mode
The IDE PIO (Programmable I/O) mode programs timing cycles between the IDE drive and the
programmable IDE controller. As the PIO mode increases, the cycle time decreases.
Optimal and Fail-Safe default settings: Auto
SETTING DESCRIPTION
Disabled Use this setting to prevent the BIOS from using Large Block Addressing mode control on the
specified channel.
Auto Use this setting to allow the BIOS to auto detect the Large Block Addressing mode control on
the specified channel.
SETTING DESCRIPTION
Disabled Use this setting to prevent the BIOS from using Multi-Sector Transfer on the specified chan-
nel. The data to and from the device will occur one sector at a time.
Auto Use this setting to allow the BIOS to auto detect device support for Multi-Sector Transfers on
the specified channel. If supported, use this setting to allow the BIOS to auto detect the num-
ber of sectors per block for transfer from the hard disk drive to the memory. The data transfer
to and from the device will occur multiple sectors at a time.
SETTING DESCRIPTION
Auto Use this setting to allow the BIOS to auto detect the PIO mode if the IDE disk drive support
cannot be determined.
0 Use this setting to allow the BIOS to use PIO mode 0. This mode has a data transfer rate of
3.3 Mbit/s.
1 Use this setting to allow the BIOS to use PIO mode 1. This mode has a data transfer rate of
5.2 Mbit/s.
2 Use this setting to allow the BIOS to use PIO mode 2. This mode has a data transfer rate of
8.3 Mbit/s.
3 Use this setting to allow the BIOS to use PIO mode 3. This mode has a data transfer rate of
11.1 Mbit/s.
4 Use this setting to allow the BIOS to use PIO mode 4. This mode has a data transfer rate of
16.6 Mitb/s. This setting generally works with all hard disk drives manufactured after 1999.
For other disk drive, such as IDE CD-ROM drives, check the specifications of the drive.
(37 Seiten)
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