Control Data Cyber 170 State Hardware Reference Manual page 197

Instruction Lookahead Purge Control
Table
5-7. Error E x i t s i n CYBER
170 Monitor
Mode (MP1) (Continued)
Error Response
Error Condition Exit Mode Selected
Exit condition b i t 48 s e t on
1 .
Detected by executive s t a t e during the
CMU i n s t r u c t i o n .
execution of compare/move i n s t r u c t i o n .
1. C 1 o r C2 g r e a t e r than 9. 2. Condition 1 omits r e a d i n g l v r i t i n g ;
M i s unchanged. Condition 2 causes
2.
K1 or K2 address out of t h e i n s t r u c t i o n t o go unexecuted.
range.
3. Store P and e x i t b i t s (01) a t RAC.
4 . C P s t o p s i n executive s t a t e .
Exit Mode Not Selected
1.
Detected by executive s t a t e during
t h e execution of compare/move
i n s t r u c t i o n .
2 .
Condition 1 omits r e a d i n g / w r i t i n g ;
CM
i s unchanged. Condition 2 causes
the i n s t r u c t i o n t o go unexecuted.
3. Continue with next i n s t r u c t i o n .
Exit condition b i t 48 s e t by 1. Execute i n s t r u c t i o n a s a pass. 1. Execute i n s t r u c t i o n a s a pass.
a UEH address range check
f o r i n s t r u c t i o n s 011 and 012. 2 . Store P and e x i t b i t s (01) a t RAC. 2. Exit t o next 60-bit word and
continue execution.
3. I n t e r r u p t t o executive s t a t e .
4. C P s t o p s i n executive s t a t e .
Exit condition b i t 48 s e t by 1. Execute i n e t r u c t i o n as a pass. 1. Execute i n s t r u c t i o n a s
a
pass.
a UEM address range check
f o r i n s t r u c t i o n s 014 and 015.
2 . Store P and e x i t condition b i t s (01)
2.
Exit t o next parcel and continue
a t RAC. P e q u a l s address of follow- execution.
ing i n s t r u c t i o n .
3. I n t e r r u p t t o executive s t a t e .
4 .
C P s t o p s i n executive s t a t e .
.
Exit condition b i t 49 s e t by
1 . Store P and e x i t condition b i t s (02 1. Continue execution.
i n f i n i t e condition, or b i t f o r i n f i n i t e o r 04 f o r i n d e f i n i t e ) .
50
set
by i n d e f i n i t e P equals address of a r i t h m e t i c
condition. i n s t r u c t i o n o r address of instruc-
t i o n follouing.
2. I n t e r r u p t t o executive s t a t e .
3. C P s t o p s i n executive s t a t e .
Any hardware p a r i t y e r r o r or 1. I n t e r r u p t t o executive s t a t e . 1. I n t e r r u p t t o executive s t a t e .
double SECDED e r r o r .
2. Executive s t a t e s t o r e s P and e x i t 2. Executive s t a t e s t o r e s P and
condition b i t s (20) a t RAC. e x i t condition b i t s (20) a t RAC.
3. CP s t o p s i n executive s t a t e . 3. C P s t o p s i n executive s t a t e .