Filter
Top Products
216
CHAPTER 6 DETAILED RULES FOR EXECUTION INSTRUCTIONS
6.85 XOR (eXclusive OR Byte Data of Accumulator and Memory
to Accumulator)
Carry out the logical exclusive-OR for the byte data of AL and EA memory (memory
expressed in each type of addressing) for every bit and return the results to AL. The
contents of AH are not changed.
■ XOR (eXclusive OR Byte Data of Accumulator and Memory to Accumulator)
Operation
(AL) ← (AL) ∀ (EA) (byte logical exclusive-OR)
Assembler format
XOR A, EA
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
NZVC
++R-
Table 6.85-1 Number of Execution Cycles / Byte Count / OP Code
EA #d8 dir @IX+off @EP Ri
Number of
execution cycles
23 3 2 2
Byte count 2 2 2 1 1
OP code 54 55 56 57 58 to 5F