Fujitsu F2MC-8FX Manual Do Utilizador

172

CHAPTER 6 DETAILED RULES FOR EXECUTION INSTRUCTIONS

6.63 OR (OR Byte Data of Accumulator and Memory to

Accumulator)

Carry out the logical OR on 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.

■

OR (OR Byte Data of Accumulator and Memory to Accumulator)

Operation

(AL)

← (AL)∨ (EA) (byte logical OR)

Assembler format

OR 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

and set to 0 in other cases.

V: Always set to 0

C: Not changed

Table 6.63-1 Number of Execution Cycles / Byte Count / OP Code

#d8

dir

@IX+off

@EP

Number of
execution cycles

Byte count

OP code

78 to 7F