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CHAPTER 6 DETAILED RULES FOR EXECUTION INSTRUCTIONS
6.62 OR (OR Byte Data of Accumulator and Temporary
Accumulator to Accumulator)
Carry out the logical OR on byte data of AL and TL for every bit and return the results to
AL. The contents of AH are not changed.
■ OR (OR Byte Data of Accumulator and Temporary Accumulator to Accumulator)
Operation
(AL) ← (AL) ∨ (TL) (byte logical OR)
Assembler format
OR A
Condition code (CCR)
+: Changed by executing instruction
-: Not changed
R: Set to 0 by executing instruction
N: Set to 1 if the MSB of AL is 1 as the result of operation and set to 0 in other cases.
Z: Set to 1 if the result of operation is 00
H
and set to 0 in other cases.
V: Always set to 0
C: Not changed
Number of execution cycle: 1
Byte count: 1
OP code: 72
NZVC
++R-