Quantum DLT 8000 Product Manual page 335

REQUEST SENSE Command (03h) (continued)
Table 5–87 REQUEST SENSE Data — Field Descriptions (continued)
Field Name
Additional Sense Length
Command Specific
Information Bytes
Additional Sense Code
Additional Sense Code
Qualifier
Sub-Assembly Code
SKSV
C/D
BPV
Field Pointer
Internal Status Code
Description
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 can be logged by the operating
system on error conditions. On tape medium errors, such an entry
usually contains the current SCSI Logical Block Address.
This field (and the field for Additional Sense Code Qualifier) provide
additional information about the Sense Key and cause of a CHECK
CONDITION status. Additional Sense Codes are discussed in detail
later in this chapter.
This field (and the field for Additional Sense Code) provide 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.
Not used. Returned as 0.
Sense-Key Specific Valid. When = 1, indicates that the Sense Key
specific field is as defined by the International Standard.
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.
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.
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.
Internal Status Codes are explained in detail in Appendix A.
Quantum DLT 8000 Tape System
SCSI Commands
(continued)
5-191