Fujitsu 80, Scsi Logical Interface Specifications

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Sense Data Error Recovery Methods
5-2 C141-C010
Bit
Byte
7 6 5 4 3 2 1 0
0 Valid X ‘70’ or X ‘71’ (Error Code)
1 X‘00’
2 0 0 ILI 0 Sense Key
3 MSB
4
5 Information
6 LSB
7 X ‘28’ (Additional Sense Data Length)
8 MSB
9
10 Command Inherent Information
11 LSB
12 Additional Sense Code
13 Additional Sense Code Qualifier
14 X‘00’
15 SKSV
16 Sense Key Inherent Information
17
18 0 0 0 0 IDD SCSI ID
19 CDB Operation Code
20
47
Figure 5.1 Expanded sense data format
5.1.2
Sense data basic information
Bytes 0 to 17 of the sense data are basic information which show the contents of the error that has
occurred. The INIT can know the contents of the error and the key information that is necessary for
recovery processing by analyzing this basic information. Each field and the meanings of bits in the sense
data basic information are explained below.
(1) Valid
When this bit is “1,” it indicates that the values shown in the information field (bytes 3 to 6) are valid.
On the other hand, when this bit is “0”, it indicates that the information field does not contain valid
information.
Detailed Information
Basic
Information
Additional
Information