Ide Support; Supported Ide Modes - Intel D850MVSE Specification

1.8.3 IDE Support

1.8.3.1 IDE Interfaces
The ICH2's IDE controller has two independent bus-mastering IDE interfaces that can be
independently enabled. The IDE interfaces support the modes listed in Table 7.
Table 7.

Supported IDE Modes

Mode
Programmed I/O
(PIO)
8237-style DMA
Ultra DMA
ATA-66
ATA-100
NOTE
ATA-66 and ATA-100 are faster timings and require a specialized cable to reduce reflections,
noise, and inductive coupling.
The IDE interfaces also support ATAPI devices (such as CD-ROM drives) and ATA devices using
the transfer modes listed in Section 4.4.4.1 on page 105.
The BIOS supports Logical Block Addressing (LBA) and Extended Cylinder Head Sector (ECHS)
translation modes. The drive reports the transfer rate and translation mode to the BIOS.
The D850MD and D850MV boards support Laser Servo (LS-120) diskette technology through the
IDE interfaces. An LS-120 drive can be configured as a boot device in the BIOS Setup program.
For information about
The location of the IDE connectors
The signal names of the IDE connectors
The Boot menu in the BIOS Setup program
Description
Processor controls data transfer
DMA offloads the processor
DMA protocol on the IDE bus
Supports host and target throttling
DMA protocol on the IDE bus
Allows host and target throttling
Similar to Ultra DMA
Device driver compatible
DMA protocol on the IDE bus
Allows host and target throttling
Product Description
Supported Transfer Rates
Up to 16 MB/sec
Up to 33 MB/sec
Up to 66 MB/sec
Read transfer rates up to 100 MB/sec
Write transfer rates up to 88 MB/sec
Refer to
Figure 15, page 63
Table 41, page 69
Section 4.7, page 113
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