Текст страницы
12.25 Read Native Max Address (F8h)
This command returns the native max LBA/CYL of HDD which is not affected by Set Max Address command.
The 48-bit native max address is greater than 268,435,455; the Read Native Max Address command shall return a
value of 268,435,455.
Table 171 Read Native Max ADDRESS (F8h)
Command Block Normal Outputs
Command Block Command Input
Register
7
6
5
4
3
2
1
0
Register
7
6
5
4
3
2
1
0
Data
-
-
-
-
-
-
-
-
Data
-
-
-
-
-
-
-
-
Feature
-
-
-
-
-
-
-
-
Error
…See Below…
Sector Count
-
-
-
-
-
-
-
-
Sector Count
-
-
-
-
-
-
-
-
Sector Number
-
-
-
-
-
-
-
-
Sector Number
V
V
V
V
V
V
V
V
Cylinder Low
-
-
-
-
-
-
-
-
Cylinder Low
V
V
V
V
V
V
V
V
Cylinder High
-
-
-
-
-
-
-
-
Cylinder High
V
V
V
V
V
V
V
V
Device/Head
1
1
1
D -
-
-
-
Device/Head
-
-
-
-
H
H
H
H
Command
1
1
1
1
1
0
0
0
Status
…See Below…
Error Register
Status Register
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
CRC UNC 0
IDN 0
ABT T0N AMN
BSY RDY DF
DSC DRQ COR IDX ERR
0
0
0
0
0
V
0
0
0
V
0
-
-
0
-
V
Input Parameters From The Device
Sector Number
This register contains native max LBA bits 0-7.
Cylinder High/Low
This register contains native max LBA bits 8-15 (Low), 16-23 (High).
H
This register contains native max LBA bits 24-27
237
Hard Disk Drive Specification