Mam attribute data – HP C737990900 User Manual
Page 103
Commands 103
Co
m
m
an
ds
The Number of Volumes Available indicates the number of partitions
available. Since Ultrium drives do not support multiple volumes, this is 1.
MAM Attribute Data
Attribute data sent with a
WRITE ATTRIBUTE
command or returned in response
to a
READ ATTRIBUTE
command has the following format:
The format implies nothing about the physical representation of the data in the
Medium Auxiliary Memory.
7
6
5
4
3
2
1
0
0
(MSB)
Attribute ID
1
(LSB)
2
Read-Only
Reserved (0)
Format
3
(MSB)
Attribute Length (n
-
4)
4
(LSB)
5
(MSB)
Attribute Value
n
(LSB)
Attribute ID
The binary identifier for a single attribute. See
“Attribute ID Values” on page 104
for a
description of attribute ID values.
Read-Only
Specifies whether an attribute is read-only. The bit is ignored by the
READ ATTRIBUTE
command.
0
The attribute may be changed by the
WRITE ATTRIBUTE
command.
1
The attribute cannot be changed by
WRITE ATTRIBUTE
.
Format
Specifies the data format of the attribute. The possible values are:
Value
Description
00h
Binary. The attribute contains binary data.
01h
ASCII. Attributes contain only graphic codes (code values 20h–7Eh) and must be
left-aligned.
02h
Text. The attribute contains textual data. The character set is as described in the
Text Localization Identifier attribute in
.
Attribute Length
The length in bytes of the Attribute Value field.