Technical data

Continuation 1 of Example 2:
Two interrupted program execution levels lead to the creation of a
two-level ISTACK (see Figs 5-5 and 5-6):
Continued on the next page
INTERRUPT STACK
DEPTH
01
SAC: 1007 DB-ADD:
DB-NO.:
DBL-REG.:
OB-NO.:
BA-ADD:
0000
0106
2516
0003 PB-NO.:
REL-SAC:
ICMK: ICRW:
0007
0300
5
003C
BLK-STP:
LEVEL:
ACCU1:
CONDITION CODE:...
CAUSE OF INTERR.:
STP
X
OP-REG:
STP
Fig. 5-5 Example 2 of evaluating the ISTACK: 1st ISTACK level
5
Control Bits and Interrupt Stack
CPU 928B Programming Guide
C79000-B8576-C898-01
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