132
ZERO PAGE X, ZERO PAGE Y
Instructions
:
Byte length
:
Cycle number
:
Timing
:
∆
STA
∆
$zz,X
∆
STX
∆
$zz,Y
∆
STY
∆
$zz,X
2
5
PC
PC +1
PC
H
PC
L
PC
L
+1
PC
H
A D
L
+X(or Y )
,00
AD
L
+X
(or Y)
AD
L
(PC+1)
L
,00
AD
L
(PC
+1)
L
00
AD
L
+X
(or Y)
SYNC
R/W
RD
ADDR
DATA
ADDR
H
ADDR
L
/DATA
WR
φ
Op -code
Invalid
O p -
code
DATA
DATA
Invalid