Fujitsu F2MC-8FX manual Decw DECrement Word Data of Stack Pointer

CHAPTER 6 DETAILED RULES FOR EXECUTION INSTRUCTIONS

6.32 DECW (DECrement Word Data of Stack Pointer)

Decrement word data of SP by one.

■DECW (DECrement Word Data of Stack Pointer)

Operation

(SP) ← (SP) - 1 (Word subtraction)

Assembler format

DECW SP

Condition code (CCR)

N	Z	V	C
-	-	-	-

+: Changed by executing instruction

-: Not changed

N:Not changed

Z:Not changed

V:Not changed

C:Not changed

Number of execution cycle: 1

Byte count: 1

OP code: D1

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