Lba/Large Mode; Block (Multi-Sector Transfer); Pio Mode - American Megatrends Olympus III User Manual

Section 2 Advanced Setup,

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. The Optimal and Fail-Safe default setting
is Auto.
Note: For hard disk drive capacities over 137 GB, your AMIBIOS is equipped with 48-bit LBA
mode addressing.
Option Description
Disabled Set this value to prevent the BIOS from using Large Block Addressing mode control on the
specified channel.
Auto Set this value to allow the BIOS to auto detect the Large Block Addressing mode control on the
specified channel. This is the default setting.

Block (Multi-Sector Transfer)

This option sets the block mode multi sector transfers option. The Optimal and Fail-Safe
default setting is Auto.
Option Description
Disabled Set this value to prevent the BIOS from using Multi-Sector Transfer on the specified channel.
The data to and from the device will occur one sector at a time.
Auto Set this value to allow the BIOS to auto detect device support for Multi-Sector Transfers on the
specified channel. If supported, set this value to allow the BIOS to auto detect the number 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. This is the default setting.

PIO Mode

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.
The Optimal and Fail-Safe default setting is Auto.
Option Description
Auto Set this value to allow the BIOS to auto detect the PIO mode. Use this value if the IDE disk
drive support cannot be determined. This is the default setting.
0 Set this value to allow the BIOS to use PIO mode 0. It has a data transfer rate of 3.3 MBs.
1 Set this value to allow the BIOS to use PIO mode 1. It has a data transfer rate of 5.2 MBs.
2 Set this value to allow the BIOS to use PIO mode 2. It has a data transfer rate of 8.3 MBs.
3 Set this value to allow the BIOS to use PIO mode 3. It has a data transfer rate of 11.1 MBs.
4 Set this value to allow the BIOS to use PIO mode 4. It has a data transfer rate of 16.6 MBs.
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.
Continued
Cont'd
Chapter Three : AMIBIOS Setup
73