Quantum DLT-S4 Podręcznik Użytkownika Pobierz pdf (Strona 332)

100

101

Chapter 4 SCSI Commands

REPORT SUPPORTED OPERATION CODES Command (A3h/0Ch)

DLT-S4 Interface Reference Guide 298

Figure 152 All_commands

Command Descriptor — Data

Format

Table 165 All_commands

Command Descriptor — Field

Descriptions

Bit

7 6 5 4 3 2 1 0

Byte

0 Operation Code

1 Reserved

2 — 3

(MSB)

Service Action

(LSB)

4 Reserved

5 Reserved ServActV

6 — 7

(MSB)

CDB Length

(LSB)

Field Description

Operation Code The operation code of the returned command.

Service Action The service action of the returned command. If the

command does not have service actions, this field is

set to 00h.

ServActV Service Action Valid. When set to 0, indicates that

the returned command does not have service actions

and that the Service Action field should be ignored.

When set to 1, indicates that the returned command

has service actions and that the Service Action field

contains valid information.

CDB Length Contains the length of the CDB indicated by the

Operation Code and, if the ServActV bit is set to 1,

the Service Action fields.

1 2 ... 327 328 329 330 331 332 333 334 335 336 337 ... 385 386

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