User's Guide

Chapter 3 Emulated DLT7000 SCSI Commands
Mode Select (6 /10) (15h / 55h)
Quantum DX-Series Software Interface Guide 175
Table 129 MODE
SELECT Mode
Parameter List - Field
Descriptions
Mode Parameter Header 3
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.
Table 130 MODE
SELECT (6) Mode
Parameter Header -
Data Format
Bit/Byte 7 6 5 4 3 2 1 0
0
1
2
3
Field Name Description
Mode
Parameter
Header
Page Format. The Page Format bit indicates that the
data sent by the host after the MODE SELECT header
and block descriptors complies with the definition of
pages in the SCSI-2 specification. The SCSI-1 format
will not be implemented so this bit must be set to 1. It
is an ILLEGAL REQUEST to have page parameters
while the PF bit is 0.
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.
Page(s) The Page Code(s) of the pages that are a part of this
MODE SELECT command.
Reserved
Media Type
Ignored
Buffered Mode Speed
Block Descriptor Length (08h)