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)
N | Z | V | C |
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|
|
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- | - | - | - |
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|
|
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+: Changed by executing instruction
N:Not changed
Z:Not changed
V:Not changed
C:Not changed
Number of execution cycle: 1
Byte count: 1
OP code: D3
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