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ORAA
Operation:
(A)
Description:
Performs bitwise logical inclusive OR between the content of accumula-
tor A and the content of memory location M and places the result in A.
Each bit of A after the operation is the logical inclusive OR of the corre-
sponding bits of M and of A before the operation.
Condition Codes and Boolean Formulas:
S
–
N:
Z:
V:
Addressing Modes, Machine Code, and Execution Times:
Source Form
ORAA # opr8i
ORAA opr8a
ORAA opr16a
ORAA oprx0_xysp
ORAA oprx9,xysp
ORAA oprx16,xysp
ORAA [D ,xysp ]
ORAA [ oprx16,xysp ]
CPU12
REFERENCE MANUAL
Inclusive OR A
+
(M) ⇒ A
X
H
I
N
Z
∆
∆
–
–
–
Set if MSB of result is set; cleared otherwise.
Set if result is $00; cleared otherwise.
0; Cleared.
Address Mode
IMM
DIR
EXT
IDX
IDX1
IDX2
[D,IDX]
[IDX2]
INSTRUCTION GLOSSARY
V
C
0
–
Object Code
8A ii
9A dd
BA hh ll
AA xb
AA xb ff
AA xb ee ff
AA xb
AA xb ee ff
ORAA
Cycles
Access Detail
1
P
3
rfP
3
rOP
3
rfP
3
rPO
4
frPP
6
fIfrfP
6
fIPrfP
MOTOROLA
6-151
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