Zilog Z08470 - Manual (Page 267)

UM008007-0715 Z80 Instruction Description
Z80 CPU
User Manual
255
Condition Bits Affected
None.
Example
If Index Register IY contains 2000h , then upon the execution of a Set 0, (IY+ 3h ) instruc-
tion, bit 0 in memory location 2003h is 1. Bit 0 in memory location 2003h is the least-sig-
nificant bit.