Zilog Z08470 - Manual (Page 212)

Z80 Instruction Set UM008007-0715
200
Z80 CPU
User Manual
DEC IX
Operation
IX ← IX – 1
Op Code
DEC
Operand
IX
Description
The contents of Index Register IX are decremented.
Condition Bits Affected
None.
Example
If Index Register IX contains 2006h , then upon the execution of a DEC IX instruction,
Index Register IX contains 2005h .
M Cycles T States 4 MHz E.T.
2 10 (4, 6) 2.50
1 1 1 0 1 1 0 1 DD
0 0 0 1 1 0 1 1 2B