Reference Guide

Chapter 4 SCSI Commands
MODE SELECT (6) / (10) Command (15h / 55h)
DLT-S4 Interface Reference Guide 124
Figure 65 Parallel SCSI —
Logical Unit Control MODE
SELECT Page — Data Format
Table 74 Parallel SCSI —
Logical Unit Control MODE
SELECT Page — Field
Descriptions
Bit
7 6 5 4 3 2 1 0
Byte
0 PS (0) SPF (0) Page Code (18h)
1 Page Length (06h)
2 Reserved Protocol Identifier (1h)
3 — 7 Reserved
Field Description
PS Parameters Savable. Must be set to 0.
SPF SubPage Format. Always set to 0. Indicates that this page uses the page_0 page
format.
Page Code Identifies the type of
MODE SELECT page being transferred. A value of 18h
identifies this as the Logical Unit Control Page.
Page Length Indicates the number of bytes in the page, excluding bytes 0 and 1. The length is
returned on
MODE SENSE and must subsequently be set to the same value when
performing
MODE SELECT.
Protocol
Identifier
A value of 1h indicates that this mode page applies to an SPI-5 compliant port (see
the SCSI Parallel Interface - 5 (SPI-5) standard).