6-2.5.2.1 Element Status Data; Table 6-21. Element Status Data Header; Table 6-22. Element Status Data Header Field Description - Fujitsu M2488 Product Manual

MEDIA CHANGER COMMANDS
6-2.5.2.1 Element Status Data
The Element status data header is an 8 byte block; a diagram of this block is shown in Table 6-
21 and described in Table 6-22.
BYTES 7
MSB
0-
1
MSB
2-
3
4
MSB)
5-
7

Table 6-22. Element Status Data Header Field Description

BYTE BIT VALUE
0-1
2-3 0
5-7 2
None of the fields in the Element status data header are adjusted if the allocation length is insuf-
ficient to send all status data available. Note that a READ ELEMENT STATUS command can
be issued with an Allocation length of 8 to determine the allocation length needed to transfer all
element status page bytes specified by the command; the allocation length needed is the value
reported in the Byte Count of Report Available field plus 8.
6-22

Table 6-21. Element Status Data Header

6 5 4
First Element Address Reported
Number of Elements Available
Reserved
Byte Count of Report Available
The First element address reported field contains the smallest element address of
those elements that meet the requirements defined in the CDB parameters. This
value is not adjusted for the allocation length.
The Number of elements available field indicates the number of element descriptors
that meet the requirements defined in the CDB request. This value is not changed
because of insufficient allocation length. By definition, the value in the Number of
elements available field will always be less than or equal to the Number of elements
field in the CDB. This value is not adjusted for the allocation length.
The Byte count of report available field indicates the total number of bytes in the
element status pages based upon the requirements of the CDB request. This value is
not adjusted for the allocation length.
CG00000-011503 REV. A
M2488 PRODUCT GUIDE
BITS
3 2
DESCRIPTION
1 0
LSB
LSB
LSB
March 1997