Zilog EZ80F916 - Manual (Page 98)

eZ80
®
CPU
User Manual
UM007715-0415 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