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TABLE 3-3.
COMMANDS
(CON'!"
D)
Command
Definition/Function
DD
(Cont'd)
Device
Type
Request
(MIl)
Tag 27
Summary Status
Request (SSR)
Tag
28
3-32
.
3.
Bidirectional data lines decode as follows:
~
Decode
2°
1
21
2
22
4
2 3
8
24
16
2 5
32
2 6
64
27
128
' _
..
1.
An
input information cODllllaDd.
2.
Causes drive
to
return prewired type identifier code on bidirec-
tional data lines.
3. Bidirectional data lines are decoded as follows:
~
Decode
Decode
(200MB)
(100MB)
2 0
1
1
21
0
0
22
0
1
2 3
1
1
24
1
1
2 5
0
0
2 6
1
1
27
0
0
l.
An
input information command.
2.
Causes the drive to transfer 8 bits of summary status information
to the controller via the bidirectional data lines.
The unit
need not be seized or have a pack installed (refer to Sense Oper-
ations for more information).
3. The bidirectional data lines are interpreted as follows:
~
Device In
Diagnostic Mode
Meaning
Drive has received a Set
Diagnostic Mode (Tag lE) or
Set Diagnostic Escape (Tag IF).
83318200
C
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