ZiLOG eZ80 User Manual

eZ80
®
CPU
User Manual
UM007714-0908 CPU Instruction Set
90
ADD A, (IX/Y+d)
ADD without Carry
Operation
A ← A+(IX/Y+d)
Description
The ( IX/Y + d ) operand is an 8-bit value retrieved from the memory location specified by
the contents of the Index Register, IX or IY, offset by the two’s complement displacement
d . This 8-bit value is added to the contents of the accumulator, A. The result is stored in
the accumulator.
Condition Bits Affected
Attributes
S Set if result is negative; reset otherwise.
Z Set if result is 0; reset otherwise.
H Set if carry from bit 3; reset otherwise.
P/V Set if overflow; reset otherwise.
N Reset.
C Set if carry from bit 7; reset otherwise.
Mnemonic Operand ADL Mode Cycle Opcode (hex)
ADD A,(IX+d)X 4 DD, 86, dd
ADD.S A,(IX+d)1 5 52, DD, 86, dd
ADD.L A,(IX+d)0 5 49, DD, 86, dd
ADD A,(IY+d)X 4 FD, 86, dd
ADD.S A,(IY+d)1 5 52, FD, 86, dd
ADD.L A,(IY+d)0 5 49, FD, 86, dd

ZiLOG eZ80 Specifications

General

Brand	ZiLOG
Model	eZ80
Category	Computer Hardware
Language	English