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LDAA
(M) ⇒ A
Operation:
Description:
Loads the content of memory location M into accumulator A. The condi-
tion codes are set according to the data.
Condition Codes and Boolean Formulas:
S
–
N:
Z:
V:
Addressing Modes, Machine Code, and Execution Times:
Source Form
LDAA # opr8i
LDAA opr8a
LDAA opr16a
LDAA oprx0_xysp
LDAA oprx9,xysp
LDAA oprx16,xysp
LDAA [D ,xysp ]
LDAA [ oprx16,xysp ]
MOTOROLA
6-122
Load Accumulator 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
86 ii
96 dd
B6 hh ll
A6 xb
A6 xb ff
A6 xb ee ff
A6 xb
A6 xb ee ff
LDAA
Cycles
Access Detail
1
P
3
rfP
3
rOP
3
rfP
3
rPO
4
frPP
6
fIfrfP
6
fIPrfP
CPU12
REFERENCE MANUAL
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