Request
Sense
Additional
Sense
Codes
(continued)
Value
Description
(hex)
40
RAM
Failure
41
Data
Path
Diagnostic Failure
42
Power-On Diagnostic Failure
43
Message Reject
Error
44
Internal
Controller
Error
45 Select/Reselect Failed
46
Unsuccessful
Soft Reset
47
SCSI Interface
Parity
Error
48
Initiator
Detected
Error
49
Inappropriate/illegal
Message
4C Microcode
Programming
Failed
4E
Overlapped
Commands
Attempted
Information Bytes. Contain information relative to specific commands and specific devices.
Additional
Sense Length. Specifies
the
number of additional Sense
data
bytes
to
follow. Set
to
14
for SCSI (CCS) or
20
for SCSI-2.
Command Specific Information. Contains information dependent upon
the
command
that
was
executed. Specific details are included in appropriate command explanations.
Additional
Sense Code Qualifier. Not supported, reported as zeros.
Failed Field Replaceable
Unit (FRU). Refers to
the
Field Replaceable Unit (FRU)
that
caused
the current error reported in this
Sense
Key.
This field will be set
to
0 since FRU specific
error detection is not supported.
SKSV (Sense Key Specific Valid). Not supported, reported as zeros.
Device
Error
Field. Indicates device unique error codes designed
to
aid service personnel
in
more detailed analysis of any drive faults. This field consists
of
four bytes, with
the
byte
positions determined by
the
interface version in use:
SCSI
(CCS)
Byte
18
19
20-21
SCSI-2
Byte
24
25
26-27
Description
Vendor Unique
DERROR
Status
Codes:
listed
in
Appendix
C
ESDI
Status
Byte
SCSI
Status
Bytes
•
The
contents of
the
Vendor Unique DERROR
Status
Code bytes are listed in Appendix C.
=
The
contents
ofthe
ESDI and SCSI
status
bytes are listed in
the
tables
that
follow.
A·46
SCSI
Command
Descriptions
DRAFT
1/18/93 09:58
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