Acer AR180 F1 - Manual (Page 90)

4 System BIOS 72
Primary IDE Master/Slave, Secondary IDE Master/Slave, Third IDE
Master, and Fourth IDE Master: These settings allow you to set the
parameters of the IDE slots. Press to activate the submenu
screen for detailed options of these items. Set the configurations
accordingly. Items included in the submenu are:
•
Type - Select the type of device connected to the system.
• LBA/Large Mode - LBA (Logical Block Addressing) is a method of
addressing data on a disk drive. In the LBA mode, the maximum
drive capacity is 137 GB. For drive capacities over 137 GB, your
system must be equipped with a 48-bit LBA mode addressing. If
not, contact your manufacturer or install an ATA/133 IDE
controller card that supports 48-bit LBA mode.
• Block (Multi-Sector Transfer) - Block Mode boosts the IDE drive
performance by increasing the amount of data transferred. Only
512 bytes of data can be transferred per interrupt if Block Mode is
not used. Block Mode allows transfers of up to 64 KB per interrupt.
Select Disabled to allow data to be transferred from and to the
device one sector at a time. Select Auto to allow data transfer
from and to the device occur multiple sectors at a time if the
device supports it.
• 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.
Select Description
Auto Automatically detect the PIO mode. Use this value if the
IDE disk drive support cannot be determined.
0 Use PIO mode 0. It has a data transfer rate of 3.3 MBs.
1 Use PIO mode 1. It has a data transfer rate of 5.2 MBs.
2 Use PIO mode 2. It has a data transfer rate of 8.3 MBs.
3 Use PIO mode 3. It has a data transfer rate of 11.1 MBs.
4 Use PIO mode 4. It has a data transfer bandwidth of 32
bits. Select Enabled to enable 32-bit data transfer.