Zilog EZ80F916 - Manual (Page 260)

eZ80
®
CPU
User Manual
UM007715-0415 CPU Instruction Set
251
OR A, ir
Logical OR
Operation
A  A OR ir
Description
The rr operand is any of the 8-bit registers IXH, IXL, IYH, or IYL. The rr operand is log-
ically ORed to the contents of the accumulator, A. The result is written to the accumulator.
Condition Bits Affected
Attributes
S
Set if result is negative; reset otherwise.
Z
Set if result is 0; reset otherwise.
H
Reset.
P/V
Set if parity is even; reset otherwise.
N
Reset.
C
Reset.
Mnemonic Operand ADL Mode Cycle Opcode (hex)
OR
A, IXH X 2
DD B4
OR
A, IXL X 2
DD B5
OR
A, IYH X 2
FD B4
OR
A, IYL X 2
FD B5