Table 27: Element Status Data - Quantum ACL 4/52 Supplementary Manual

Table 27: Element Status
Data
Bit/Byte 7
(MSB)
0
1
(MSB)
2
3
4
(MSB)
5
6
7
8
-
X
First Element Address Reported
Number of Elements Reported
Byte Count of Report Available
SCSI Interface
The format for the Read Element Status Data is shown in Table 27.
6 5 4
First Element Address Reported
Number of Elements Reported
Reserved (00h)
Byte Count of
Report Available
One or More Element Status Page(s)
This field indicates the element address of the element with the
smallest element address found to meet the command description
block request.
This field indicates the number of elements meeting the request in
the command descriptor block. The status for these elements is
returned if sufficient allocation length was specified.
This field indicates the number of bytes of element status page
data available for all elements meeting the request in the command
descriptor block.
From one to four Element Status Pages can be returned. One page is
returned for each type of element with status information. Each page
contains a header and one or more element descriptors. Each element
descriptor reports the status for a single library element.
The page header (bytes 0-7) contains information that defines the
contents of the element descriptors for the elements of that type. The
format of a status page is shown in Table 28.
ACL 4/52 Software Interface Guide
Document 6211225-03
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Version 3.0
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