Technical data

RS 140 Condition codeword "write and read blocks"
Address EA8C
System data RS 140 indicates whether blocks have been overwritten,
newly loaded or deleted since the last OVERALL RESET of the CPU
or since the last time system data RS 140 was cleared. The bits for
changes and block type are allocated to each block. Before a new
monitoring section, system data RS 140 must be cleared. RS 140 is
also cleared during an overall reset.
Bit no. High byte: Write/read IDs
15
Block deleted
14
Block newly loaded
13
Block overwritten
12
not used
11
10
9
8
Bit no. Low byte: Write/read IDs
7
not used
6
DX
5
DB
4
FX
3
FB
2
SP
1
PB
0
OB
Table 8-15 Assignment of RS 140 (Write/read IDs)
8
User Memory Organization in the CPU 928B
CPU 928B Programming Guide
C79000-B8576-C898-01
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