Block (Multi-Sector Transfer); Pio Mode; Dma Mode - American Megatrends StorTrends 2104 User Manual

Section 2 Advanced Setup,

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.

DMA Mode

This setting allows you to adjust the DMA mode options. The Optimal and Fail-Safe
default setting is Auto.
Option Description
Auto Set this value to allow the BIOS to auto detect the DMA mode. Use this value if the IDE disk
drive support cannot be determined. This is the default setting.
SWDMA0 Set this value to allow the BIOS to use Single Word DMA mode 0. It has a data transfer rate of
2.1 MBs.
SWDMA1 Set this value to allow the BIOS to use Single Word DMA mode 1. It has a data transfer rate of
4.2 MBs.
SWDMA2 Set this value to allow the BIOS to use Single Word DMA mode 2. It has a data transfer rate of
8.3 MBs.
MWDMA0 Set this value to allow the BIOS to use Multi Word DMA mode 0. It has a data transfer rate of
4.2 MBs.
MWDMA1 Set this value to allow the BIOS to use Multi Word DMA mode 1. It has a data transfer rate of
13.3 MBs.
MWDMA2 Set this value to allow the BIOS to use Multi Word DMA mode 2. It has a data transfer rate of
16.6 MBs.
UDMA0 Set this value to allow the BIOS to use Ultra DMA mode 0. It has a data transfer rate of 16.6
MBs. It has the same transfer rate as PIO mode 4 and Multi Word DMA mode 2.
StorTrends™ 2104 User's Guide
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