Technical data

8.3.5
Bit Assignment of the
System Data Words
Interrupt condition codeword (system data RS 0):
RS 0 Interrupt condition codeword
Address EA00H
High byte
Bit no.
Assignment
15
NAU
14
PEU
13
BAU
12
MP-STP
11
ZYK
10
QVZ
9
ADF
8
STP
Low byte
7
BCF
6
FE-3
5
LZF
4
REG
3
STUEB
2
STUEU
1
WECK
0
DOPP
The system data RS 0 corresponds to the CAUSE OF INTERR. in the
ISTACK. If, e.g. a runtime error occurs during the program execution,
bit number 5 is set. Once the program processing level LZF has been
processed completely, bit number 5 is reset.
Table 8-2 Assignment of RS 0 (Interrupt condition codeword)
User Memory Organization in the CPU 928B
CPU 928B Programming Guide
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