Chapter 3 Media Changer Commands
Request Sense Command (03h)
154
Quantum ATL SuperLoader Software Interface Guide
Additional Sense
Length
This field specifies the number of additional sense bytes to follow. If the
Allocation Length of the Command Descriptor Block is too small to
transfer all of the Additional Sense bytes, the Additional Sense Length is
not adjusted to reflect the truncation.
Command Specific
Information Bytes
Command Specific Information Bytes depend on the command
executed. This field is not used.
Additional Sense
Code (ASC)
This field (and the field for Additional Sense Code Qualifier) provides
additional information about the Sense Key and cause of a CHECK
CONDITION status. Additional Sense Codes are discussed in detail
later in this section.
Additional Sense
Code Qualifier
(ASCQ)
This field (and the field for Additional Sense Code) provides additional
information about the Sense Key and cause of a CHECK CONDITION
status. Additional Sense Code Qualifiers are discussed in detail later in
this chapter.
Sub-Assembly
Code
Not used. Returned as 0.
SKSV
Sense-Key Specific Valid. When = 1, indicates that the Sense Key specific
field is as defined by the International Standard.
C/D
Command / Data. When set to 1, this field indicates that the illegal
parameter is contained in the Command Descriptor Block. A C/D set to
0 indicates that the illegal parameter is in the Parameter List from the
initiator.
BPV
Bit Pointer Valid. When set to 1, this field indicates that the Bit Pointer
field is valid and designates which bit of the byte designated by the field
pointer is in error. For a multi-bit field, it points to the most significant
bit of the field.
Field Pointer
This field indicates which byte of the Command Descriptor Block or
Parameter List is in error. For a multi-byte field, the most significant byte
is indicated.
Field
Description
Summary of Contents for ATL SuperLoader ATL
Page 1: ...ATL SuperLoader DLT and ATL SuperLoader LTO Software Interface Guide 81 60220 01 A02...
Page 18: ...Preface Document Conventions xviii Quantum ATL SuperLoader Software Interface Guide...
Page 44: ...Chapter 2 Messages Supported SCSI Messages 26 Quantum ATL SuperLoader Software Interface Guide...
Page 196: ...Index 178 Quantum ATL SuperLoader Software Interface Guide...