
UM008007-0715 Z80 Instruction Description
Z80 CPU
User Manual
85
LD (IY+d), n
Operation
(lY+d) ← n
Op Code
LD
Operands
(lY+d), n
Description
The n integer is loaded to the memory location specified by the contents of Index Register
summed with the two’s-complement displacement integer, d.
Condition Bits Affected
None.
Example
If Index Register IY contains the number A940h, the instruction LD (IY+10h), 97h
results in byte 97h in memory location A950h.
M Cycles T States 4 MHz E.T.
5 19 (4, 4, 3, 5, 3) 2.50
d
11 1 01111
FD
n
00 1 10110
36
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