Service Reference Guide, dx2200 MT 415606-001 4–5
Serial and Parallel ATA Drive Guidelines and Features
4.8 SATA BIOS
4.8.1 Legacy Mode
The Legacy mode is used to access devices attached to an embedded ATA controller. Each
channel of the controller requires two fixed I/O address ranges and an IRQ.
■ Primary Channel
❏ Command block: 1F0h - 1F7h
❏ Control block: 3F6h
❏ IRQ: 14
■ Secondary Channel
❏ Command block: 170h - 177h
❏ Control block: 376h
❏ IRQ: 15
Drive/Partition Capacity Limits
Maximum Size
File
System
Controller
Type Operating System
Partition Drive
FAT 32 ATA Windows 2000/ XP 32 GB 128 PB
NTFS ATA Windows NT/2000/XP 2 TB 128 PB
Windows 2000 and XP Windows 9x, NT, and Linux
Enhanced Mode (default BIOS Setting)
—Separate IDE controller
Compatibility Mode (non-default BIOS Setting)
—Combined IDE controller
•PATA Controller in Legacy Mode
- Device 0 is accessible as Device 0 of
PATA controller’s Primary Channel
- Device 1 is accessible as Device 1of
PATA controller’s Primary Channel
•SATA Controller in Native Mode
- SATA 0 is accessible as Device 0 of
SATA controller’s Primary Channel
- SATA 1 is accessible as Device 0 of
SATA controller’s Secondary Channel
SATA 2 is accessible as Device 1of
SATA controller’s Primary Channel
- SATA 3 is accessible as Device 1 of
SATA controller’s Secondary Channel
•PATA Controller in Legacy Mode
- Device 0 is accessible as Device 0 of the
combined controller’s Secondary
Channel
- Device 1 is accessible as Device 1of the
combined controller’s Secondary
Channel
•SATA Controller in Legacy Mode
- SATA 0 is accessible as Device 0 of the
combined controller’s Primary Channel
- SATA 1 is inaccessible
- SATA 2 is accessible as device 1 of the
combined controller’s Primary Channel
- SATA 3 is inaccessible
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