IBM System/360

Interruption Code PSW
How Instruction
Interruption
(PSW Bits 16-31) Mask Bit
ILC
Execution Is Finished
Machine Check
00000000 00000000 13 u Terminated
Program
Operation 00000000 00000001
-
1, 2, 3 Suppressed
Privileged operation
00000000 00000010
-
1, 2 Suppressed
Execute
00000000
00000011
-
2 Suppressed
Protection
00000000 00000100
-
0, 2, 3 Suppressed/Term
Addressing
00000000
00000101
-
1, 2, 3 Suppressed/Term
Specification
00000000 00000110
-
1, 2, 3 Suppressed
Data
00000000
00000111
-
2,
3
Suppressed/Term
Fixed-point overflow
00000000 00001000 36 1,
2
Completed
Fixed-point divide 00000000 00001001
-
1, 2
Suppressed/Comp
Decimal overflow 00000000 00001010
37 3
Completed
Decimal divide
00000000 00001011
-
3 Suppressed
Exponent overflow 00000000 00001100
-
1, 2
Terminated
Exponent underflow 00000000 00001101
38
1, 2 Completed
Significance
00000000 00001110 39
1,
2
Completed
Floating-point divide
00000000 00001111
-
1,
2
Suppressed
Supervisor Call 00000000 rrrrrrrr
-
1 Suppressed