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Addressing Mode
7
Y-register Indexed Addressing Mode in absolute address
!abs+Y
The effective address is determined by adding the address of operand and the contents of Y-register. it is
specified to all space of memory.
OP CODE
Low Address
Low Address
Operand
Instructions
X,Memory
ADC
AND
CMP
EOR
LDA
OR
SBC
STA
Example) ( Y=55
h
)
15 35 D0
ADC !Y
+ D035
h
Op code ( 15 )
Operand
data
Operand
Y( 55 )
MEMORY
A
←
A+data+C
=D08A
h
D08A
h