Quantum 1200 Series DAT Autochanger Betriebsanweisung PDF herunterladen (Seite 117)

SDLT 600 SCSI Interface Guide Chapter 4: SCSI Commands

81-81200-02 REV A01 January 2005 4-75

Mode Page Descriptor

Following the MODE SELECT command’s Mode Parameter Block Descriptor are the MODE

SELECT pages, each of which sets a different device parameter. Each Mode page has a 2-byte

header that identifies the page code and indicates the number of bytes in that page.

Figure 4-44. MODE SELECT Page Descriptor — Data Format

Bit

Byte

7 6 5 4 3 2 1 0

0 PS (0) SPF (0) Page Code

1 Page Length

2 – n Mode Parameters

Table 4-46. MODE SELECT Page Descriptor — Field Descriptions

Field Name Description

PS Parameters Savable. For the MODE SELECT (6)/(10) commands,

this field is reserved. Always set to 0.

SPF SubPage Format. Always set to 0. Indicates that the drive uses the

page_0 page format.

Page Code Identifies the type of MODE SELECT page being transferred.

Page Length Indicates number of bytes in the page, excluding bytes 0 and 1.

Mode Parameters Information in this field depends on the Mode page. For details,

refer to a list of all supported Mode pages in Section 4.9 on

page 4-67.

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Quantum 1200 Series DAT Autochanger Betriebsanweisung Seite 117