Program Status Word (Ec Mode); Channel Command Word; Channel Status Word (Hex 40); Program Interruption Codes - IBM System/370 Operator's Reference Manual

I nstruction address
32 34 36 3940
47
1
48 55
1
56 63
0-5 Channel 0 to 5 masks
6 Mask for channel 6 and up
7 (E) External mask
32-33 U LC) I nstruction length code
34-35 (CC) Condition code
12 (C=O) Basic control mode
13 (M) Machine-check mask
14 (W=1) Wait state
15 (P=1) Problem state
36 Fixed-point overflow mask
37 Decimal overflow mask
38 Exponent underflow mask
39 Significance mask
PROGRAM STATUS WORD (EC Mode)
0000 0000
I
I nstruction address
32 3940 47
1
48
SSIS6
1 (R) Program event recording mask 15 (P=1) Problem state
5 (T=1) Translation mode lS-19 (CC) Condition code
6
m
Input/output mask 20 Fixed-point overflow mask
7 (E) External mask 21 Decimal overflow mask
12 (C=l) Extended control mode 22 Exponent underflow mask
13 (M) Machine-check mask 23 Significance mask
14 (W=1) Wait state
CHANNEL COMMAND WORD
I
Command code
I
Data address
CD-bit 32 (SO) causes use of address portion of next CCW.
CC-bit 33 (40l causes use of command code and data address of next CCW.
SLI-bit 34 (20) causes suppression of possible incorrect length indication.
Skip-bit 35 (10) suppresses transfer of information to main storage.
PCI-bit 36
(08)
causes a channel program controlled interruption.
IDA-bit 37
(04)
causes bitsS-31 of CCW to specify location of first IDAW.
CHANNEL STATUS WORD (hex 40)
63
31
63
l
Key
J~I~16C~18
Is116 CCWaddress23124
J
I
Unit status
I
Channel status
I
Byte count
I
32 3940 4748
55 1 56
63
5 Logout pending 40 (SO) Program-eontrolled interruption
6-7 Deferred condition code 41 (40) Incorrect length
32 (So) Attention 42 (20) Program check
33 (40) Status modifier 43 (10) Protection check.
34 (20) Control unit end 44
lOS) Channel data check
35 (10) Busy
45 (04)
Channel control check
36 (OS)
Channel end
46 (02)
I nterface control check
37
(04)
Device end 47 (01) Chaining check
38 (02) Unit check
48-63 Residual byte count for the
39 (01) Unit exception
last CCW used
PROGRAM INTERRUPTION CODES
0001 Operation exception
0002 Privileged operation excp
0003 Execute exception
0004
Protection exception
0005 Addressing exception
0006 Specification exception
0007 Data exception
0008 Fixed-point overflow excp
0009 Fixed-point divide excp
OOOA Decimal overflow exception
OOOB Decimal divide exception
OOOC Exponent overflow excp
0000 Exponent underflow excp
OOOE Significance exception
OOOF Floating-point divide excp
0010 Segment translation excp
0011 Page translation exception
0012 Translation specification excp
0013 Special operation exception
0040
Monitor event
0080 Program event (code may be
combined with another code)
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