CHAPTER 6 DETAILED RULES FOR EXECUTION INSTRUCTIONS
6.5AND (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)
N | Z | V | C |
|
|
|
|
+ | + | R | - |
|
|
|
|
+: Changed by executing instruction
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 00H and set to 0 in other cases.
V:Always set to 0
C:Not changed
Table 6.5-1 Number of Execution Cycles / Byte Count / OP Code
EA | #d8 | dir | @IX+off | @EP | Ri | |
|
|
|
|
|
| |
Number of execution | 2 | 3 | 3 | 2 | 2 | |
cycles | ||||||
|
|
|
|
| ||
|
|
|
|
|
| |
Byte count | 2 | 2 | 2 | 1 | 1 | |
|
|
|
|
|
| |
OP code | 64 | 65 | 66 | 67 | 68 to 6F | |
|
|
|
|
|
|
56
