Seek Block (0Ch) - Sony DDS-4 Product Description Manual

6. COMMAND SPECIFICATION

6. 22 SEEK BLOCK (0Ch)

Bit 7
Byte
0
1
2 (MSB)
3
4
5 Unused (00b)
The SEEK BLOCK command causes the target to position the logical unit to the specified block address. Upon comple-
tion, the logical position shall be before the specified location. Prior to performing the operation, the target shall ensure
that all buffered data, Filemarks, and Setmarks have been transferred to the medium. This command should be used in
conjunction with the REQUEST BLOCK ADDRESS command.
Note: This command is similar in function to the SCSI-2 LOCATE command and is supported by the SDT-10000/SDT-
11000 to allow backward compatibility with QIC-104 type devices.
Immed:
If the Immed bit equals 0 then the SEEK BLOCK command will report completion status to the Initiator after the
entire operation is complete. If the Immed bit is 1 then the drive will report "COMMAND COMPLETE" to the
Initiator upon acceptance of the command.
Logical Block Address:
The Block Address of the desired position.
6 - 88 SONY SDT-10000/SDT-11000 DDS Tape Drive
6 5
Logical Unit Number
4 3
Operation Code (0Ch)
Reserved
Logical Block Address
Reserved
SEEK BLOCK
2 1 0
Immed
(LSB)