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6.3.2.10.3 Read Max Address Command [F8h]
This command returns the native maximum LBA/cylinders of the device which is not affect by Set Max
Address Command. The data returned in the command block registers is the maximum device size as
shown in the following tables.
- CHS Mode
Task File Registers
Cylinder High
Cylinder Low
Device/Head
Sector Number
Sector Count
- LBA Mode
Task File Registers
Cylinder High
Cylinder Low
Device/Head
Sector Number
Sector Count
DRV : Device selection bit.
K6610007
Rev.5
02.14.'03
7
6
5
4
Native Maximum Cylinder High
Native Maximum Cylinder Low
-
0
-
DRV
Native Maximum Sector Number
X
X
X
X
7
6
5
4
Native Maximum LBA Bit23 - 16
Native Maximum LBA Bit15 - 8
-
1
-
DRV
Native Maximum LBA Bit7 - 0
X
X
X
X
0:DRV0
1:DRV1
3
2
1
Native Max Head
X
X
X
3
2
1
Native Max LBA
Bit27 - 24
X
X
X
- 83 -
0
X
0
X
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