Mam attribute data – HP Q153090901 User Manual
Page 115
READ ATTRIBUTE 8Ch
C
omm
an
ds
115
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 Identifier
1
(LSB)
2
Read-Only
Reserved (0)
Format
3
(MSB)
Attribute Length (n
−
4)
4
(LSB)
5
(MSB)
Attribute Value
n
(LSB)
Attribute Identifier The binary identifier for a single attribute. See “Attribute ID values” on page 116
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
00b
Binary. The attribute contains binary data.
01b
ASCII. Attributes contain only graphic codes (code values 20h–7Eh). It
must be left-aligned and contain 20h (ASCII space) in any unused bytes.
10b
Text. The attribute contains textual data. The character set is as
described in the Text Localization Identifier attribute in “Standard host
11b
Reserved.
Attribute Length
The length in bytes of the Attribute Value field.