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100

101

SCSI Commands

5-64 Quantum DLT 4000 Tape Drive

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

Table 5–33 MODE SELECT Mode Parameter List - Field Descriptions

Field Name Description

Mode Parameter

Header

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

Parameter List and is always present (Figure 5-31 and Table 5-34).

Mode Parameter

Block Descriptor

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

and number of Descriptor Logical Block Addresses (Figure 5-32 and Table

5-35).

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

command.

5.9.1.1 Mode 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

Byte

7 6 5 4 3 2 1 0

0 Reserved

1 Media Type

2 Ignored Buffered Mode Speed

3 Block Descriptor Length (08h)

Figure 5–31 MODE SELECT Mode Parameter Header - Data Format

1 2 ... 159 160 161 162 163 164 165 166 167 168 169 ... 299 300

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