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CHAPTER 6 DETAILED RULES FOR EXECUTION INSTRUCTIONS
6.30 DECW (DECrement Word Data of Extra Pointer)
Decrement word data of EP by one.
■ DECW (DECrement Word Data of Extra Pointer)
Operation
(EP) ← (EP) - 1 (Word subtraction)
Assembler format
DECW EP
Condition code (CCR)
+: 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: D3
NZVC
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