Device Parameter Table Extension (Dpte); Table 25 - Device Parameter Table Extension - Western Digital T13/2132-D User Manual

T13/2132-D Revision 3

8.20.4 Device Parameter Table Extension (DPTE)

The DPTE provides hardware configuration information to applications that bypass INT 13h for addressing an
ATA device.
Offset Type
0-1 Word I/O port base address
2-3 Word Control port address
4 Byte Device register
Bit Description
7 1
6 LBA enable (1 = enabled)
5 1
4 ATA DEV bit
3:0 0
5 Byte BIOS Vendor Specific.
6 Byte IRQ number for this device
7 Byte Block count for ATA READ/WRITE MULTIPLE commands
8 Byte DMA information
Bit Description
7:4 DMA type
3:0 DMA channel
9 Byte PIO information
Bit Description
7:4 0
3:0 PIO type
54
Table 25 — Device parameter table extension
Working Draft Enhanced Disk Drive - 4 (EDD-4)
Description
June 23, 2010