X8STI datasheet(83/109 Pages) ETC1

83 / 109 page

Chapter 4: AMI BIOS

4-13

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)

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. 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 the AMI BIOS to automatically detect the PIO mode. Use

this value if the IDE disk drive support cannot be determined.

Select 0 to allow the AMI BIOS to use PIO mode 0. It has a data transfer rate

of 3.3 MB/s.

Select 1 to allow the AMI BIOS to use PIO mode 1. It has a data transfer rate

of 5.2 MB/s.

Select 2 to allow the AMI BIOS to use PIO mode 2. It has a data transfer rate

of 8.3 MB/s.

Select 3 to allow the AMI BIOS to use PIO mode 3. It has a data transfer rate

of 11.1 MB/s.

Select 4 to allow the AMI BIOS to use PIO mode 4. It has a data transfer band-

width of 32-Bits. Select Enabled to enable 32-Bit data transfer.

DMA Mode

Select Auto to allow the BIOS to automatically detect IDE DMA mode when the

IDE disk drive support cannot be determined.

Select SWDMA0 to allow the BIOS to use Single Word DMA mode 0. It has a

data transfer rate of 2.1 MB/s.

Select SWDMA1 to allow the BIOS to use Single Word DMA mode 1. It has a

data transfer rate of 4.2 MB/s.

Select SWDMA2 to allow the BIOS to use Single Word DMA mode 2. It has a

data transfer rate of 8.3 MB/s.

X8STI Datasheet(PDF) 83 Page - List of Unclassifed Manufacturers