ZiLOG eZ80

eZ80
®
CPU
User Manual
UM007714-0908 CPU Instruction Set
81
ADC A, (IX/Y+d)
ADD with Carry
Operation
A ← A+(IX/Y+d)+C
Description
( IX/Y + d ) is an 8-bit value stored in the memory location specified by the Index Register,
IX or IY, offset by the two’s-complement displacement
d . This 8-bit value and the Carry
Flag (C) are added to the contents of the accumulator, A. The result is stored in the accu-
mulator.
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)
ADC A,(IX+d)X 4 DD, 8E, dd
ADC.S A,(IX+d)1 5 52, DD, 8E, dd
ADC.L A,(IX+d)0 5 49, DD, 8E, dd
ADC A,(IY+d)X 4 FD, 8E, dd
ADC.S A,(IY+d)1 5 52, FD, 8E, dd
ADC.L A,(IY+d)0 5 49, FD, 8E, dd