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SCSI Commands: 38BREPORT SUPPORTED OPERATION CODES
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3.26
REPORT SUPPORTED OPERATION CODES
The host uses this command to retrieve information on the commands that the drive
supports. The host may request a list of all operation codes and service actions
supported or the command support data for a specific command.
3.26.1
REPORT SUPPORTED OPERATION CODES Command Descriptor Block
The following table shows the layout of the CDB.
Byte
Bits
7 6 5 4 3 2 1 0
0
Operation Code (A3h)
1
Ignored LUN
Service Action (0Ch)
2
Reserved Reporting
Options
3
Requested Operation Code
4
(MSB)
5
Requested Service Action
(LSB)
6
(MSB)
7
8
9
Allocation Length
(LSB)
10
Reserved
11
Control
3.26.1.1
REPORT SUPPORTED OPERATION CODES Command Field
Descriptions
Field Bytes
Bits
Description
Operation
Code
0 The Operation code for REPORT SUPPORTED OPERATION
CODES is A3h.
Ignored
Logical Unit
1 5-7
The LUN field is vestigial from the SCSI-1 standard and is
ignored.
Service
Action
1 0-4
The Service Action field is 0Ch and identifies the function to be
performed under the more general command function
specified in the operation code.
Reporting
Options
2 0-2
000b = A list of all operation codes and service actions
supported by the drive shall be returned. The Requested
Operation Code and Requested Service Action fields are
ignored.
001b = The command support data for the operation code
specified in the Requested Operation Code field shall be
returned. The Requested Service Action field is ignored. If the
Requested Operation Code field has an operation code that
has a service action, then the command is terminated with a
check condition status.
010b = The command support data for the operation code and
service action specified in the Requested Operation Code and
Requested Service Action fields. If the Requested Operation
Code field specifies an operation code that does not have a
service action, then the command is terminated with a check
condition status.
Summary of Contents for LTO 4
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