Dec ix/y, Operation, Description – Zilog EZ80F916 User Manual
Page 143: Condition bits affected, Attributes
eZ80
®
CPU
User Manual
UM007715-0415
CPU Instruction Set
134
DEC IX/Y
Decrement
Operation
IX/Y
IX/Y – 1
Description
The value contained in the specified Index Register, IX or IY, is decremented by 1.
Condition Bits Affected
None.
Attributes
Mnemonic
Operand
ADL Mode
Cycle
Opcode (hex)
DEC
IX
X
2
DD, 2B
DEC.S
IX
1
3
52, DD, 2B
DEC
.L
IX
0
3
49, DD, 2B
DEC
IY
X
2
FD, 2B
DEC.S
IY
1
3
52, FD, 2B
DEC
.L
IY
0
3
49, FD, 2B
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