Fujitsu F2MC-8FX Manuel D’Utilisation

104

CHAPTER 6 DETAILED RULES FOR EXECUTION INSTRUCTIONS

6.29 DECW (DECrement Word Data of Accumulator)

Decrement word data of A by one.

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DECW (DECrement Word Data of Accumulator)

Operation

(A)

← (A) - 1 (Word subtraction)

Assembler format

DECW A

Condition code (CCR)

+: Changed by executing instruction

-: Not changed

N: Set to 1 if the MSB is 1 as the result of operation and set to 0 in other cases.

Z: Set to 1 if the result of operation is 0000

and set to 0 in other cases.

V: Not changed

C: Not changed

Number of execution cycle: 1

Byte count: 1

OP code: D0