SCSI Commands

MODE SELECT (6) / (10) Command (15h) / (55h) (continued)

Table 5–36 MODE SELECT Mode Parameter List - Field Descriptions

Field Name

Description

 

 

Mode Parameter

4 bytes in length, contains information about the remainder of the Parameter

Header

List and is always present (see Figure 5-34 and Table 5-37).

Mode Parameter

8 bytes in length, allows the initiator to set the drive’s Logical Block Size and

Block Descriptor

number of Descriptor Logical Block Addresses (see Figure 5-35 and Table 5-

 

38).

Page(s)

The Page Code(s) of the pages that are a part of this MODE SELECT

 

command.

 

 

5.9.1.1Mode Parameter Header

The figure and table that follow provide an illustration and description of the fields that make up the MODE SELECT command’s Mode Parameter header.

Bit

7

6

 

5

 

4

 

3

 

2

 

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

Media Type

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

Ignored

 

Buffered Mode

 

 

 

 

Speed

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

Block Descriptor Length (08h)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 5–34 MODE SELECT Mode Parameter Header - Data Format

5-68

Quantum DLT 7000 Tape System

Page 172
Image 172
Quantum Instruments DLT 7000 manual Mode Select Mode Parameter List Field Descriptions, Mode Parameter Header

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