Instruction List
B-15
ET 200S Interface Module IM 151/CPU
A5E00058783-01
B.7 Logic Instructions with Parenthetical Expressions
Saving of the BR, RLO and OR bits and a function identifier (A, AN, ...) to the
nesting stack. 7 nesting levels are possible per block.
Instruc-
tion
Ad-
dress
ID
Description
Length
in
Words
Typical Execution Time in
s
A( AND left parenthesis 1 1.7
AN( AND NOT left parenthesis 1 1.7
O( OR left parenthesis 1 1.7
ON( OR NOT left parenthesis 1 1.7
X( EXCLUSIVE OR left parenthesis 1 1.7
XN( EXCLUSIVE OR NOT left parenthesis 1 1.7
Status word for: A(, AN(, O(, ON(, X(,
XN(
BR A1 A0 OV OS OR STA RLO /FC
Instruction depends on: Yes – – – – Yes – Yes Yes
Instruction controls: – – – – – 0 1 – 0
) Right parenthesis, removing an entry from
the nesting stack, gating the RLO with the
current RLO in the processor
1 1.9
Status word for: ) BR A1 A0 OV OS OR STA RLO /FC
Instruction depends on: – – – – – – – Yes –
Instruction controls: Yes – – – – Yes 1 Yes 1
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