Read Native Max Address Ext (27H) - Hitachi Deskstar 7K500 Specifications

5.23 Read Native Max Address Ext (27h)

Table 63: Read Native Max Address Ext command (27h)
Command Block Output Registers
Register
Data Low
Data High
Feature Current
Previous
Sector Current
Count
Previous
Sector Current
Number
Previous
Cylinder Current
Low
Previous
Cylinder Current
High
Previous
Device/Head
Command
Error Register
7 6 5
CRC UNC 0
0 0 0
This command returns the native max LBA of HDD which is not effected by Set Max Address Ext command.
Input parameters from the device
Sector Number (HOB=0)
Sector Number (HOB=1)
Cylinder Low (HOB=0)
Cylinder Low (HOB=1)
Cylinder High (HOB=0)
Cylinder High (HOB=1)
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 1 1 D - - - -
0 0 1 0 0 1 1 1
4 3 2 1
IDN 0 ABT T0N AMN
0 0 V 0
LBA (7:0) of the address of the Native max address
LBA (31:24) of the address of the Native max address
LBA (15:8) of the address of the Native max address
LBA (39:32) of the address of the Native max address
LBA (23:16) of the address of the Native max address
LBA (47:40) of the address of the Native max address
Deskstar 7K500 Hard Disk Drive Serial ATA Addendum
Command Block Input Registers
Register
Data Low
Data High
Error
Sector HOB=0
Count
HOB=1
Sector HOB=0
Number
HOB=1
Cylinder HOB=0
Low
HOB=1
Cylinder HOB=0
High
HOB=1
Device/Head
Status
0 7 6 5
BSY RDY DF DSC DRQ
0 0 V 0
99
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
see below
- - - - - - - -
- - - - - - - -
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
- - - - - - - -
See below ...
Status Register
4 3 2 1
COR IDX
- - 0 -
0
ERR
V