Set Max Address Ext (37H); Figure 154. Set Max Address Ext Command (37H) - Hitachi ic35l060avv207-0 - Deskstar 60 GB Hard Drive Specifications

11.39 Set Max Address Ext (37h)

Command Block Output
Registers
Register
Data Low
Data High
Fea- Current
ture
Previous
Sector Current
Count
Previous
Sector Current
Number
Previous
Cylin- Current
der
Previous
Low
Cylin- Current
der
Previous
High
Device/Head
Command
Error Register
7 6 5
CRC UNC 0
0 0 0

Figure 154. Set Max Address Ext Command (37h)

This command is immediately preceded by a Read Native Max Address Ext command.
This command overwrites the maximum number of Address of HDD in a range of actual device capacity.
Once device receives this command, all accesses beyond that Address are rejected with setting ABORT
bit in status register.
When the address requested is greater than 268,435,455, words (103:100) shall be modified to reflect the
requested value, but words (61:60) shall not be modified. When the address requested is equal to or less
than 268,435,455, words (103:100) shall be modified to reflect the requested value, and words (61:60)
shall also be modified.
If this command is not supported, the maximum value to be set exceeds the capacity of the device, a host
protected area has been established by a Set Max Address command, the command is not immediately
preceded by a Read Native Max Address Ext command, or the device is in the Set Max Locked or Set
Max Frozen state, the device shall return command aborted.
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - B
- - - - - - - -
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
- 1 - D - - - -
0 0 1 1 0 1 1 1
4 3 2 1
IDN 0 ABT T0N AMN
0 0 V 0
Deskstar 180GXP hard disk drive specifications
Command Block Input
Registers
Register
Data Low
Data High
Error
Sector HOB=0
Count
HOB=1
Sector HOB=0
Number
HOB=1
Cylin- HOB=0
der
HOB=1
Low
Cylin- HOB=0
der
HOB=1
High
Device/Head
Status
Status Register
0 7 6 5
BSY RDY DF
0 0 V 0
185
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
...See Below...
- - - - - - - -
- - - - - - - -
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
- - - - - - - -
...See Below...
4 3 2 1 0
DSC DRQ COR IDX ERR
– – 0 – V