Read Multiple Ext (29H); Figure 127. Read Multiple Ext (29H) - Hitachi ic35l060avv207-0 - Deskstar 60 GB Hard Drive Specifications

11.21 Read Multiple Ext (29h)

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 V 0

Figure 127. Read Multiple Ext (29h)

The Read Multiple Ext command reads one or more 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. Command execution is identical
to the Read Sector(s) command except that an interrupt is generated for each block (as defined by the
Set Multiple command) instead of for each 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 - D - - - -
0 0 1 0 1 0 0 1
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
151
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