K6602743
Rev.2
02.12.’02
- 82 -
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
7 6 5 4 3 2 1 0
Cylinder High
Native Maximum Cylinder High
Cylinder Low
Native Maximum Cylinder Low
Device/Head -
0 -
DRV
Native Max Head
Sector Number
Native Maximum Sector Number
Sector
Count
X X X X X X X X
- LBA Mode
Task
File
Registers
7 6 5 4 3 2 1 0
Cylinder High
Native Maximum LBA Bit23 - 16
Cylinder Low
Native Maximum LBA Bit15 - 8
Device/Head -
1 -
DRV
Native Max LBA
Bit27 - 24
Sector Number
Native Maximum LBA Bit7 - 0
Sector
Count
X X X X X X X X
DRV : Device selection bit.
0:DRV0
1:DRV1