IBM System/370 145 Reference Summary page 99

No~
0 0
Used
0
0 2
Unit
0 3
'-"~--1 4 CPU
the Error
5 Channel
0 6
Storage Unit
·~1
8 CPU
Source
9 Channel
0
10
11 Storage Unit
12 Control Unit
0
13
0
14
0 15
16
Field
0 17
Validity
0 18
Flags--
19 Sequence Code
20 Unit Status
21 CCW Address & Key
22 Channel Address
23 Device Address
Type of
:---1
24 00
=
Interface Disconnect
Termination
25 01 =-Stop, Stack or Normal Termination
0 26 10 =Selective Reset
0 27 11 = System Reset
Disconnect In
28 1/0 Error Alert
Sequence-I
Code
:}
31
Channel
ID
Mam
Storage
AO 160
A4 164
AB 168
AC
172
80 176
84 180
88 184
BC 188
~ 0000 =Selector Channel
0001 = Byte-Multiplexer Channel
0010 = Block,Mult1plexer ·~ode
I
joooo
0000
0000
I
Maximum IOEL Length
4 15 16
Reserved
Channel ID
l
I OE L Pointer
L1m1ted Channel Logout (ECSWl
Reserved
l
Reserved
Reserved
31
1/0 COMMUNICATION'S AREA
SEQUENCE CODES
000 Error during execution of TIO.
001 Error during initial selection. Command-out
has been sent.
010 Command has been accepted by the device,
no data has been transferred.
011 At least one data byte has been transferred,
or channel id le state.
100 The command in the current CCW has either
not been sent or not accepted by the device.
101 Polling Data transfer--unpredictable.
8.9
II