beautypg.com

17 seek (6) command, 18 seek (10) command – FUJITSU MCJ3230SS User Manual

Page 109

background image

4.3 SCSI Commands

C156-E224-01EN

4-35

4.3.17 SEEK (6) command

Table 4.56 SEEK (6) command

Bit

Byte

7

6

5

4

3

2

1

0

0

Operation Code (0Bh)

1

LUN

(MSB)

2

3

Logical Block Address

(LSB)

4-5

Reserved

The SEEK (6) command performs a seek operation on the block specified by the
logical block address.

After finishing the seek operation normally, the command reports GOOD or
INTERMEDIATE GOOD status. If the command fails in the seek operation,
it reports CHECK CONDITION status.

The SEEK command need not be used for READ or WRITE command
operation because these types of commands include the seek function.

4.3.18 SEEK (10) command

Table 4.57 SEEK (10) command

Bit

Byte

7

6

5

4

3

2

1

0

0

Operation Code (2Bh)

1

LUN

Reserved

2-5

Logical Block Address

6-9

Reserved

The SEEK (10) command positions the disk head on the track at a specified
logical address. Logical Block Address specifies the logical block address at
which the disk head is to be positioned.