Supero PDSLM, Руководство пользователя

Страница: 55 / 81

Chapter 4: AMI BIOS
4-5
Primary IDE Master/Slave, Third IDE Master and Fourth IDE Master
These settings allow the user to set the parameters of Primary IDE Master/Slave,
Third IDE Master, and Fourth IDE Master slots. Hit <Enter> to activate the following
submenu items for detailed options of these items. Set the correct confi gurations
accordingly. The items included in the submenu are the following:
Type
This feature allows the user to select the type of device connected to the system.
The options are Not Installed, Auto , CDROM, and ARMD.
LBA/Large Mode
Logical Block Addressing (LBA) 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. The options are Disabled and Auto .
Block (Multi-Sector Transfer)
This feature allows the user to use the Block Mode to boost the IDE drive
performance by increasing the amount of data transferred. Only 512 bytes of data
can be transferred per interrupt if the Block Mode is not used. If the Block Mode is
used, data will be transferred of up to 64 KB per interrupt. If set to Disabled, data
will be transferred from and to the device one sector at a time. If set to Auto, data
will be transferred from and to the device multiple sectors at a time if the device
supports it. The options are Auto and Disabled.
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. The options are Auto , 0, 1, 2, 3, and 4. Select Auto to allow AMI
BIOS to automatically detect the PIO mode. Use this value if the IDE disk drive
support cannot be determined. Select 0 to allow AMI BIOS to use PIO mode 0. It
has a data transfer rate of 3.3 MBs. Select 1 to allow AMI BIOS to use PIO mode
1. It has a data transfer rate of 5.2 MBs. Select 2 to allow AMI BIOS to use PIO
mode 2. It has a data transfer rate of 8.3 MBs. Select 3 to allow AMI BIOS to use
PIO mode 3. It has a data transfer rate of 11.1 MBs. Select 4 to allow AMI 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 drives, such
as IDE CD-ROM drives, check the specifi cations of the drive.