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
Mode Select (6) / (10) Command (15h / 55h)
Quantum SuperLoader 3 Software Interface Guide 45
Table 21 Mode Select
Parameter Header
Mode Parameter Block Descriptor 2
The figure and table that follow provide an illustration and description of
the fields that make up the
MODE SELECT command’s Mode Parameter
Block Descriptor
.
3
Reserved
4 - 5
Reserved
6 - 7
Block Descriptor Length
Field Name Description
Block
Descriptor
Length
This field specifies the length in bytes of all the block
descriptors. Since the media changer only allows one
block descriptor, the value must be either 0 or 8. A
value of 0 indicates no block description is included;
a value of 8 indicates a block descriptor is present and
precedes the mode page data. Any other value other
than 0 or 8 causes a
CHECK CONDITION status with
sense key of
ILLEGAL REQUEST to be returned.
Bit
Byte76543210