psw- Mask Bits Mask in Ctrl Execution of Bits Registers Instruction
Source Interruption ILC Identified
Identification Code EC BC Reg, Bit Set by Old PSW MACHINE CHECK Locations 232-239
1
(old PSW 48,
new PSW 112)
Exigent condition 13 13 u terminated or nullified
2
Repressible cond 13 13 14, 4-7 u unaffected
2
SUPERVISOR CALL Locations 138-139
(old PSW 32, in the EC mode and
new PSW 96) 34-35 in the BC mode
Instruction bits 00000000 ssssssss 1,2 completed PROGRAM Locations 142-143
(old PSW 40, in the EC mode and
new PSW 104) 42-43 in the BC mode
Binary Hex
3
Operation 00000000 pOOOOOOl 0001 1,2,3 suppressed Privileged oper 00000000 pOOOOOlO 0002 1,2,3 suppressed
Execute 00000000 pOOOOOll 0003 2 suppressed Protection 00000000 pOOOOIOO 0004 0,!,2,3 suppressed or
terminated
Addressing 00000000 pOOOOIOI 0005 0,1,2,3 suppressed or
terminated Specification 00000000 pOOOOllO 0006 0,1,2,3 suppressed or
completed
Data 00000000 pOOOOl!! 0007 2,3 suppressed or
terminated Fixed-pt overflow xxxxxxxx pOOOlOOO 0008 20 36 1,2 completed
Fixed-point divide 00000000 pOOOIOOl 0009 !,2 suppressed or
completed
Decimal overfloL..j 00000000 pOOOIOIO OOOA 21 37 2,3 completed Decimal divide 00000000 pOOOI01! OOOB 2,3 suppressed
Exponent overflow xxxxxxxx pOOOl100 OOOC 1,2 completed
Exponent underflow xxxxxxxx pOOOlIO! OOOD 22 38 1,2 completed Significance xxxxxxxx pOOOlllO OOOE 23 39 1,2 completed
Floating-pt divide xxxxxxxx pOOOlll! OOOF 1,2 suppressed or
inhibited
4 Segment transl 00000000 p0010000 0010 !,2,3 nullified Page translation 00000000 pOOlOOO! 001! 1,2,3 nullified
Translation spec 00000000 pOOlO010 0012 1,2,3 suppressed Special operation 00000000 p00100l1 0013 0, 1 2 suppressed
ASN-transl spec 00000000 pOOlOl11 0017 2 suppressed
Vector operation
4 00000000 pOOl100! 0019 2,3 nullified Space-switch event 00000000 p001ll00 OOlC 1, 31 2 completed
Unnormalized xxxxxxxx pOOlillO OOIE 2 inhibited
4
operand
4 PC-transl spec 00000000 pOOII!l! OOIF 2 suppressed
AFX translation 00000000 pOlOOOOO 0020 2 nullified ASX translation 00000000 pOIOOOOl 0021 2 nullified
LX translation 00000000 pOIOOOIO 0022 2 nullified
EX translation 00000000 pOlOOO!l 0023 2 nullified
Primary authority 00000000 pOlOG100 0024 2 nullified Secondary auth 00000000 pOIOOIOl 0025 2 nullified
Monitor event 00000000 p1000000 0040 8, 16-31 2 completed
PER event xxxxxxxx 1nnnnnnn
s 0080 1 * 9, 0-34) 0,1,2,3 completed
6
Interruption Action (Part 1 of 3) Chapter 6. Interruptions 6-3
psw- Mask Bits
Mask in Ctrl Execution of
Bits Registers Instruction
Source Interruption IlC Identified
Identification Code EC BC Reg, Bit Set by Old PSW EXTERNAL locations 134-135
(old PSW 24, in the EC mode and
new PSW 88) 26-27 in the BC mode
Binary Hex
3
Interval timer 00000000 1eeeeeee 0080 7 7 0, 24 u unaffected
Interrupt key 00000000 e1eeeeee 0040 7 7 0, 25 u unaffected
External signal 2 00000000 ee1eeeee 0020 7 7 0, 26 u unaffected
External signal 3 00000000 eeeleeee 0010 7 7 0, 26 u unaffected
External signal 4 00000000 eeee1eee 0008 7 7 0, 26 u unaffected
External signal 5 00000000 eeeeelee 0004 7 7 0, 26 u unaffected
External signal 6 00000000 eeeeeele 0002 7 7 0, 26 u unaffected
External signal 7 00000000 eeeeeee1 0001 7 7 0, 26 u unaffected
Malfunction alert 00010010 00000000 1200 7 7 0, 16 u unaffected
Emergency signal 00010010 00000001 1201 7 7 0, 17 u unaffected
External call 00010010 00000010 1202 7 7 0, 18 u unaffected
TOD-clock sync chk 00010000 00000011 1003 7 7 0, 19 u unaffected Clock comparator 00010000 00000100 1004 7 7 0, 20 u unaffected CPU timer 00010000 00000101 1005 7 7 0, 21 u unaffected Service signal 00100100 00000001 2401 7 7 0, 22 u unaffected INPUT/OUTPUT Locations 186-187
(old PSW 56, in the EC mode and new PSW 120) 58-59 in the BC mode
Channel 0 00000000 dddddddd 6 0 2, 0
7
U
unaffected Channel 1 00000001 dddddddd 6 1 2, 17 u unaffected Channel 2 00000010 dddddddd 6 2 2, 27 u unaffected Channel 3 00000011 dddddddd 6 3 2, 3
7
u unaffected Channel 4 00000100 dddddddd 6 4 2, 47 u unaffected Channel 5 00000101 dddddddd 6 5 2, 57 u unaffected Channel 6 & UP cccccccc dddddddd 6 6 2, 6+ u unaffected
RESTART locations 2-3 in the
(old PSW 8, Be mode
new PSW 0) Restart key 00000000 00000000
8
U
unaffected
Interruption Action (Part 2 of 3)
6-4 System/370 Principles of Operation
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