HT1621
READ-MODIFY-WRITE mode (command code : 1 0 1)
C
W
S
R
R
D
1
A
5
A
3
A
A
1
2
D
0
D
D
1
2
D
3
D
0
D
D
1
2
D
3
A
5
A
3
A
A
1
2
0
D
D
1
2
D
3
1
0
A
4
A
0
1
0
1
A
4
A
0
D
D
A
T
A
M
e
m
o
r
y
A
d
d
r
e
s
s
D
a
1
t
a
(
M
(
A
M
1
A
)
1
M
)
a
e
t
m
a
o
r
(
y
M
A
A
1
d
)
d
r
e
s
s
2
(
M
A
2
)
D
a
t
READ-MODIFY-WRITE mode (successive address accessing)
C
W
S
R
R
D
1
A
5
A
3
A
A
1
2
0
D
D
1
2
D
3
D
0
D
D
1
2
D
3
D
0
D
D
1
2
D
3
D
0
D
D
1
2
D
3
D
0
D
1
D
2
D
3
D
0
1
0
A
4
A
0
D
D
A
T
A
M
e
m
o
r
y
A
d
d
r
e
s
D
s
a
t
(
a
M
A
(
)
M
D
A
a
)
t
a
D
a
(
M
t
a
A
D
)
(
a
M
t
A
a
+
(
1
M
)
A
D
+
a
2
t
)
a
(
M
A
+
1
15
January 10, 2001