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REPORT SUPPORTED OPERATION CODES Command (A3h) SDLT 600 SCSI Interface Guide

4-210 January 2005 81-81200-02 REV A01

4.25.1 All_commands Parameter Data Format

The REPORT SUPPORTED OPERATION CODES all_commands parameter data format begins

with a 4-byte header that contains the length in bytes of the parameter data, followed by a list of the

returned commands. Each command descriptor contains information about a single supported

command, including operation code and service action, if applicable. The list of command descriptors

contains all commands the drive supports.

Figure 4-115. All_commands Parameter Data — Data Format

Bit

Byte

7 6 5 4 3 2 1 0

0 – 3

(MSB)

Command Data Length (n – 3)

(LSB)

Commands

4 – n

Command Descriptor 0

Command Descriptor n

Table 4-123. All_commands Parameter Data — Field Descriptions

Field Description

Command

Data

Length

The number of bytes in the returned command descriptor list.

Command

Descriptors

Each command descriptor contains information about a single supported command,

including operation code and service action, if applicable. See Figure 4-116 on

page 4-211 for the command descriptor data format.

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Quantum 1200 Series DAT Autochanger Guía de usuario Pagina 252