Read Sector(S) Ext (24H); Figure 131. Read Sector(S) Ext Command (24H) - Hitachi ic35l060avv207-0 - Deskstar 60 GB Hard Drive Specifications

11.25 Read Sector(s) Ext (24h)

Command Block Output
Registers
Register
Data Low
Data High
Current
Fea-
ture
Previous
Current
Sector
Count
Previous
Current
Sector
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 131. Read Sector(s) Ext Command (24h)

The Read Sector(s) Ext command reads from 1 to 65,536 sectors of data from disk media, then transfers
the data from the device to the host.
The sectors are transferred through the Data Register 16 bits at a time.
If an uncorrectable error occurs, the read will be terminated at the failing sector.
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
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
V V V V V V V V
V V V V V V V V
1 1 1 D - - - -
0 0 1 0 0 1 0 0
4 3 2 1
IDN 0 ABT T0N AMN
V 0 V 0
Deskstar 180GXP hard disk drive specifications
Command Block Input
Registers
Register
Data Low
Data High
Error
HOB=0
Sector
Count
HOB=1
HOB=0
Sector
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
V 0 V 0
157
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
DSC DRQ COR IDX ERR
V – 0 –
0
V