Deskstar T7K500 Hard Disk Drive Specification
184
12.22 Read Native Max Address Ext (27h)
Table 111: Read Native Max Address Ext command (27h)
This command returns the native max LBA of HDD which is not effected by Set Max Address Ext command.
Input parameters from the device
Sector Number (HOB=0) LBA (7:0) of the address of the Native max address
Sector Number (HOB=1) LBA (31:24) of the address of the Native max address
Cylinder Low (HOB=0) LBA (15:8) of the address of the Native max address
Cylinder Low (HOB=1) LBA (39:32) of the address of the Native max address
Cylinder High (HOB=0) LBA (23:16) of the address of the Native max address
Cylinder High (HOB=1) LBA (47:40) of the address of the Native max address
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 Low - - - - - - - - Data Low - - - - - - - -
Data High - - - - - - - - Data High - - - - - - - -
Feature
Current - - - - - - - -
Error see below
Previous - - - - - - - -
Sector
Count
Current - - - - - - - -
Sector
Count
HOB=0 - - - - - - - -
Previous - - - - - - - - HOB=1 - - - - - - - -
Sector
Number
Current - - - - - - - -
Sector
Number
HOB=0 V V V V V V V V
Previous - - - - - - - - HOB=1 V V V V V V V V
Cylinder
Low
Current - - - - - - - -
Cylinder
Low
HOB=0 V V V V V V V V
Previous - - - - - - - - HOB=1 V V V V V V V V
Cylinder
High
Current - - - - - - - - Cylinder
High
HOB=0 V V V V V V V V
Previous - - - - - - - - HOB=1 V V V V V V V V
Device/Head 1 1 1 D - - - - Device/Head - - - - - - - -
Command 0 0 1 0 0 1 1 1 Status See below ...
Error Register Status Register
7654321 0 76543 21 0
CRC UNC 0 IDN 0 ABT T0N AMN BSY RDY DF DSC DRQ COR IDX ERR
00000V0 0 0V0-- 0- V
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