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 76543210
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 76543210
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
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