ZiLOG eZ80 User Manual

eZ80
®
CPU
User Manual
UM007714-0908 CPU Instruction Set
89
ADD A, ir
ADD without Carry
Operation
A ← A+ ir
Description
The ir operand is any of IXH, IXL, IYH, or IYL. The ir operand 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,IXH X 2 DD, 84
ADD A,IXL X 2 DD, 85
ADD A,IYH X 2 FD, 84
ADD A,IYL X 2 FD, 85

ZiLOG eZ80 Specifications

General

Brand	ZiLOG
Model	eZ80
Category	Computer Hardware
Language	English