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CHAPTER 6 DETAILED RULES FOR EXECUTION INSTRUCTIONS
6.5 AND (AND Byte Data of Accumulator and Memory to
Accumulator)
Carry out the logical AND on the byte data of AL and EA memory (memory expressed in
each type of addressing) for every bit and return the result to AL. The byte data of AH is
not changed.
■ AND (AND Byte Data of Accumulator and Memory to Accumulator)
Operation
(AL) ← (AL) ^ (EA) (Byte AND)
Assembler format
AND 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 6.5-1 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 64 65 66 67 68 to 6F