Hitachi DK23DA-30F Owners Manual - Page 82

Read Max Address Command [F8h]

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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 76543210 Native Maximum Cylinder High Native Maximum Cylinder Low - 0 - DRV Native Max Head Native Maximum Sector Number XXXXXXXX - LBA Mode Task File Registers Cylinder High Cylinder Low Device/Head Sector Number Sector Count DRV : Device selection bit. 76543210 Native Maximum LBA Bit23 - 16 Native Maximum LBA Bit15 - 8 - 1 - DRV Native Max LBA Bit27 - 24 Native Maximum LBA Bit7 - 0 XXXXXXXX 0:DRV0 1:DRV1 K6602705 Rev.3 08.20.01 - 82 -

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K6602705
Rev.3
08.20.01
- 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