User's Guide
Table Of Contents
- Preface
- Theory of Operation
- Media Changer Commands
- Overview of Command and Status Processing
- Media Changer Command Descriptions
- Initialize Element Status Command (07h)
- Inquiry Command (12h)
- Load Unload Command (1Bh)
- Log Sense Command (4Dh)
- Mode Select (6) / (10) Command (15h / 55h)
- Mode Sense (6) / (10) Command (1Ah/ 5Ah)
- Move Medium Command (A5h)
- Persistent Reserve In Command (5Eh)
- Persistent Reserve Out Command (5Fh)
- Position to Element Command (2Bh)
- Prevent/Allow Medium Removal (1Eh)
- Read Buffer Command (3Ch)
- Read Element Status Command (B8h)
- Release Element (10) Command (57h)
- Release Unit (6) Command (17h)
- Report Device Identifier Command (A3h)
- Report LUNS Command (A0h)
- Request Sense Command (03h)
- Reserve Element (10) Command (56h)
- Reserve Element (6) Command (16h)
- Send Diagnostic Command (1Dh)
- Set Device Identifier Command (A4h)
- Test Unit Ready Command (00h)
- Write Buffer Command (3Bh)
- Index
Chapter 2 Media Changer Commands
Read Element Status Command (B8h)
Quantum SuperLoader 3 Software Interface Guide 102
Element Status Data 2
The data returned by the READ ELEMENT STATUS command is defined in
figure 59
and Element Status Page through Data Transfer Element
Descriptor. Element status data consists of an eight-byte header, followed
by zero or more element status pages.
Figure 59 Element Status Data
Header
Table 48 Element Status Data
Bit
Byte765 4 3210
0-1
First Element Address Reported
2-3
(MSB)
Number Of Elements Available
(LSB)
4
Reserved
5-7
(MSB)
Byte Count Of Report Available
(all pages, n-7)
(LSB)
8-n
Element status page(s)
Note: The
READ ELEMENT STATUS command can be issued with an
Allocation Length of eight bytes in order to determine the
Allocation Length required to transfer all the element status
data specified by the command.
Field Name Description
First Element
Address
Reported
Indicates the element address of the element with the
smallest element address found to meet the
CDB
request.