SCSI Commands: 32BREAD POSITION
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3.20.2.2
READ POSITION Long Form Field Descriptions
Field
Bytes
Bits
Description
BOP
0
7
0 = The current logical position is not at BOP.
1 = The current logical position is at Beginning-of-Partition (BOP).
EOP
0
6
0 = The current logical position is not between early warning and
end-of-tape.
1 = The current logical position is between early warning and end-of-
tape.
MPU
0
3
0 = File Number field is valid.
1 = File Number field is invalid.
BPU
0
2
0 = Block Number field is valid.
1 = Block Number field is invalid.
Partition
Number
4-7
This field is always 0.
Block
Number
8-15
This field indicates the number of logical blocks including filemarks
between beginning-of-medium and the current logical position.
File
Number
16-23
This field indicates the number of filemarks between beginning-of-
medium and the current logical position.
Set
Number
24-31
This field is always 0.
Reserved
All bits are 0.
3.20.3
READ POSITION Completion Status
Code Message Description
00h
Good
Status
•
The drive is ready to perform any appropriate command.
•
The drive remains in any previously set mode.
•
The tape is not moved.
02h
Check
Condition
Use the REQUEST SENSE command to retrieve status information. Possible
Sense Keys are:
Code Message
Description
02h
Not Ready
No cartridge is in the drive.
04h
Hardware Error
Drive hardware failure detected.
05h
Illegal Request
The CDB contains an invalid bit.
06h
Unit Attention
The cartridge was changed, or the drive was
reset prior to this command.
Summary of Contents for LTO 4
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