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C2G41
User’s Manual
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 Disabled and
Auto.
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 MBs. Select 1 to allow the
AMI BIOS to use PIO mode 1. It has a data transfer rate of 5.2 MBs. Select 2 to
allow the AMI BIOS to use PIO mode 2. It has a data transfer rate of 8.3 MBs.
Select 3 to allow the AMI BIOS to use PIO mode 3. It has a data transfer rate
of 11.1 MBs. Select 4 to allow the 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 specifications of the drive.
DMA Mode
Select Auto to allow the BIOS to automatically detect IDE DMA mode when the
IDE disk drive support cannot be determined. Select SingleWordDMA0 to allow
the BIOS to use Single Word DMA mode 0. It has a data transfer rate of 2.1
MBs. Select SingleWordDMA1 to allow the BIOS to use Single Word DMA mode
1. It has a data transfer rate of 4.2 MBs. Select SingleWordDMA2 to allow the
BIOS to use Single Word DMA mode 2. It has a data transfer rate of 8.3 MBs.
Select MultiWordDMA0 to allow the BIOS to use Multi Word DMA mode 0. It
has a data transfer rate of 4.2 MBs. Select MultiWordDMA1 to allow the BIOS
to use Multi Word DMA mode 1. It has a data transfer rate of 13.3 MBs. Select
MultiWordDMA2 to allow the BIOS to use Multi Word DMA mode 2. It has a data
transfer rate of 16.6 MBs. Select UltraDMA0 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. Select UltraDMA1 to allow the
BIOS to use Ultra DMA mode 1. It has a data transfer rate of 25 MBs. Select
UltraDMA2 to allow the BIOS to use Ultra DMA mode 2. It has a data transfer
rate of 33.3 MBs. Select UltraDMA3 to allow the BIOS to use Ultra DMA mode
3. It has a data transfer rate of 66.6 MBs. Select UltraDMA4 to allow the BIOS
Summary of Contents for Supero C2G41
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