Reference Guide

Chapter 4 SCSI Commands
READ ATTRIBUTE Command (8Ch)
DLT-S4 Interface Reference Guide 244
The attribute ID, format, and length are also sometimes referred to as the
attribute header. The value of the EMAM attribute header implies nothing
about the physical representation of an attribute in the medium auxiliary
memory.
Figure 123 EMAM Attribute —
Data Format
Table 136 EMAM Attribute
Parameter Data — Field
Descriptions
Bit
Byte
7 6 5 4 3 2 1 0
0 — 1
(MSB)
Attribute Identifier
(LSB)
2
Read
Only
Reserved Format
3 — 4
(MSB)
Attribute Length (n – 4)
(LSB)
5 — n
(MSB)
Attribute Value
(LSB)
Field Description
Attribute
Identifier
Contains a code value identifying the attribute (see
Attribute Identifier Values
on page 244).
Read Only Indicates whether the attribute is read only. When
set to 1, the attribute is read only. When set to 0, the
attribute is read / write.
Format Specifies the format of the data in the Attribute
Value field (see table 137
).
Attribute Length Specifies the length in bytes of the Attribute Value
field.
Attribute Value Contains the current (
READ ATTRIBUTE) or desired
(
WRITE ATTRIBUTE) value of the attribute.