pattern character 150 PCI (see program-controlled interruption) PER (see program-event recording) PER events
with concurrent exceptions 45
with dynamic address translation 42
with interruptible instruction 42
withLOAD PSW 41
withSUPERVISOR CALL 40 point of interruption (interruptions) 74
point of interruption (machine-check interruption) 176
postnormalization 159
power check indication, thermal/CB 247
power-off key 246
power-on key 246
power-on resetCPU 53
main storage, effect of on 53TOD (time-of-day) clock 53
powers of two, table (see Appendix F)
prefixing 95, 14
prenormalization 159
priority
of access exceptions 84
of clock comparator interruptions 86
ofCPU timer interruptions 86
of exigent machine-check interruptions 89
of external interruptions 86
of interrupt key interruptions 86
of interval timer interruptions 86
ofI/O interruptions 227, 89
of program exceptions 85
table of program exceptions 85
privileged
instruction30 operation exception 76
problem state30 Jl/;'O program
check (channel status condition) 234
execution 19
interruption 75
identification in main storage90 program-controlled interruption (PCI) 215
channel status condition 233
flag (in CCW) 211
program-event recording(PER) 39,80 address in main storage 41
code 41
control register allocation40 event masks 40 general-register-alteration m:asks 40 indication of events concurrently with other interruption
conditions 43
interruption identification in main storage90 mask, EC mode 34
operation40 starting/ending address 40 storage area designation 42
program events 42
general register alteration 43
indication of 45
instruction fetching 42
storage (main) alteration 42
successful branching 42
program execution 19Page of GA22-70004 Revised September 1, 1975
By TNL: GN22-0498
program-interruption conditions
access exception, recognition of80 addressing exception 76
data exception 78
decimal-divide exception 78
decimal-overflow exception 78
execute exception 76
exponent-overflow exception 78
exponent-underflow exception 79
fixed-point divide exception 78
fixed-point overflow exception 78
floating-point divide exception 79
monitor event80 operation 75
page-translation 79
priority of 85
privileged operation 76
program event80 segment-translation 79
significance 79
special operation80 specification 77
table of priorities of 85
translation specification 79
program mask and condition code validity bit (in machine-check
interruption code)180 program mask in PSW BC mode 34
EC mode 35
program-reset
initial 52
order 97
program state (seeCPU state)
program status word (seePSW) protection check (channel status condition) 234
protection exception 76
summary table 77
protection key
in CAW210 in CSW 228,236
protection key inPSW BC mode 33
EC mode 34
protection, storage (see storage protection)PSW (program status word) 32, 22 PSW, BC mode format 33
channel mask 33
condition code 34
current 16
extended-control (EC) mode 34
external mask 33
ILC (instruction-length code) 34
instruction address 34
interruption code 34I/O mask 33
machine-check mask 34
problem state bit 34
program mask 34
protection key 34
wait state bit 34PSW, EC mode format 33
condition code 35
EC mode bit 34
external mask 34
instruction address 35I/O mask 34
Index 323
with concurrent exceptions 45
with dynamic address translation 42
with interruptible instruction 42
with
with
point of interruption (machine-check interruption) 176
postnormalization 159
power check indication, thermal/CB 247
power-off key 246
power-on key 246
power-on reset
main storage, effect of on 53
powers of two, table (see Appendix F)
prefixing 95, 14
prenormalization 159
priority
of access exceptions 84
of clock comparator interruptions 86
of
of exigent machine-check interruptions 89
of external interruptions 86
of interrupt key interruptions 86
of interval timer interruptions 86
of
of program exceptions 85
table of program exceptions 85
privileged
instruction
problem state
check (channel status condition) 234
execution 19
interruption 75
identification in main storage
channel status condition 233
flag (in CCW) 211
program-event recording
code 41
control register allocation
conditions 43
interruption identification in main storage
operation
program events 42
general register alteration 43
indication of 45
instruction fetching 42
storage (main) alteration 42
successful branching 42
program execution 19
By TNL: GN22-0498
program-interruption conditions
access exception, recognition of
data exception 78
decimal-divide exception 78
decimal-overflow exception 78
execute exception 76
exponent-overflow exception 78
exponent-underflow exception 79
fixed-point divide exception 78
fixed-point overflow exception 78
floating-point divide exception 79
monitor event
page-translation 79
priority of 85
privileged operation 76
program event
significance 79
special operation
table of priorities of 85
translation specification 79
program mask and condition code validity bit (in machine-check
interruption code)
EC mode 35
program-reset
initial 52
order 97
program state (see
program status word (see
protection exception 76
summary table 77
protection key
in CAW
protection key in
EC mode 34
protection, storage (see storage protection)
channel mask 33
condition code 34
current 16
extended-control (EC) mode 34
external mask 33
ILC (instruction-length code) 34
instruction address 34
interruption code 34
machine-check mask 34
problem state bit 34
program mask 34
protection key 34
wait state bit 34
condition code 35
EC mode bit 34
external mask 34
instruction address 35
Index 323
