Deskstar 7K250 Hard Disk Drive Specification
152
12.22 Read Native Max ADDRESS (F8h)
Table 88: Read Native Max ADDRESS (F8h)
This command returns the native max LBA/CYL of the drive which is not effected by the Set Max ADDRESS
command.
If the 48-bit native max address is greater than 268,435,455, the Read Native Max Address command returns a
value of 268,435,455.
Input parameters from the device
Sector Number
In LBA mode this register contains the native max LBA bits 0–7. (L = 1)
In CHS mode this register contains the native max sector number. (L = 0)
Cylinder High/Low
In LBA mode this register contains the native max LBA bits 8–15 (Low) and bits 16–23
(High). (L = 1)
In CHS mode this register contains the native max cylinder number. (L = 0)
H
In LBA mode this register contains the native max LBA bits 24–27. (L = 1) In CHS mode
this register contains the native maximum head number. (L = 0)
Command Block Output Registers
Command Block Input Registers
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 L 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
Summary of Contents for Deskstar 7K250
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