Zilog Z08470 Bedienungsanleitung Seite 116

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Z80 Instruction Set UM008007-0715
104
Z80 CPU
User Manual
LD IY, (nn)
Operation
IYh (nn + 1), IYI nn)
Op Code
LD
Operands
IY, (nn)
Description
The contents of address (nn) are loaded to the low-order portion of Index Register IY, and
the contents of the next highest memory address (nn + 1) are loaded to the high-order por-
tion of IY. The first n operand after the op code is the low-order byte of nn.
Condition Bits Affected
None.
Example
If address 6666h contains 92h, and address 6667h contains DAh, then upon the execution
of an LD IY, (
6666h) instruction, Index Register IY contains DA92h.
M Cycles T States 4 MHz E.T.
6 20 (4, 4, 3, 3, 3, 3) 5.00
11 1 01111
FD
00 0 10011
2A
n
n
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