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SCSI Commands: 32BREAD POSITION
Page
147
Field
Bytes
Bits
Description
Number of
blocks in
buffer
13-15
This field is not supported and is always 0.
Number of
bytes in
buffer
16-19
This field is not supported and is always 0.
Reserved
All bits are 0.
The First Block Location and the Last Block Location are both set to the number of
blocks and file marks between BOP and current logical position. If the tape is at
BOP, 0 is returned in these fields. The Beginning of Partition (BOP) flag is set if the
Block Location fields are zero.
The following table shows the fields in the READ POSITION Data when Long and
TCLP bits are set to one.
Byte
Bits
7 6 5 4 3 2 1 0
0
BOP EOP
Reserved
MPU BPU
Reserved
1
Reserved
2
Reserved
3
Reserved
4
(MSB)
5
6
7
Partition Number (0)
(LSB)
8
(MSB)
9
10
11
12
13
14
15
Block Number
(LSB)
16
(MSB)
17
18
19
20
21
22
23
File Number
(LSB)
24
(MSB)
25
26
27
28
29
30
31
Set Number (0)
(LSB)
Summary of Contents for LTO 4
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