Quantum DAT 24 Drive Uživatelská příručka stáhnout pdf (Strana 6)

Page iv DDS-4 SCSI Interface Manual, Rev. B

Message-Out Phase ...........................................................................................15

Command Descriptor Block.......................................................................................16

Logical Unit Support ..................................................................................................17

SCSI Message Descriptions and Definitions.............................................................18

SCSI Status Code Descriptions and Definitions .......................................................23

Attention Condition ....................................................................................................24

Reset Condition.........................................................................................................24

Unit Attention Condition.............................................................................................24

Buffered Mode...........................................................................................................25

Immediate Function...................................................................................................25

Residual Length Function..........................................................................................25

Disconnect/Reconnect Function................................................................................26

SCSI Memory Address Pointers................................................................................27

Current Data Pointers .........................................................................................27

Saved Data Pointers ...........................................................................................27

Early Warning Function .............................................................................................27

Error Reporting..........................................................................................................28

Soft Errors...........................................................................................................28

Hard Errors..........................................................................................................28

Variable and Fixed Mode Recording.........................................................................28

Autoloader Operation ................................................................................................29

General SCSI Information...................................................................................29

SCSI Medium Changer Commands ...................................................................29

General Operation ..............................................................................................31

Loading and Initialization ....................................................................................31

Front Panel Operation.........................................................................................32

Cassette Selection ..............................................................................................32

Automatic Loading Mode ....................................................................................32

Magazine Ejection...............................................................................................33

Stray Tape Recovery ..........................................................................................33

Commands 34

Introduction................................................................................................................34

Command Reference List ...................................................................................34

Conventions ........................................................................................................35

Command Descriptor Blocks (CDBs)........................................................................35

Command Descriptor Block Formats..................................................................35

Command Descriptor Block Field Descriptions ..................................................36

Flag and Link Bit Descriptions ............................................................................36

ERASE (19h) .............................................................................................................37

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Quantum DAT 24 Drive Uživatelská příručka Strana 6