
MITSUBISHI
ELECTRIC
36
MITSUBISHI MICROCOMPUTERS
4250 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
Instruction code
Function
Mnemonic
Hexadecimal
notation
N
w
N
c
Parameter
Type of
instructions
D
8
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
(A)
←
(B)
(B)
←
(A)
(A)
←
(Y)
(Y)
←
(A)
(E
7
–E
4
)
←
(B) (E
3
–E
0
)
←
(A)
(B)
←
(E
7
–E
4
) (A)
←
(E
3
–E
0
)
(DR
2
–DR
0
)
←
(A
2
–A
0
)
(X)
←
x, x = 0 to 3
(Y)
←
y, y = 0 to 15
(Y)
←
(Y) + 1
(Y)
←
(Y) – 1
TAB
TBA
TAY
TYA
TEAB
TABE
TDA
LXY x, y
INY
DEY
R
0 1
E
0 0
E
0 1
F
0 0
C
0 1
A
0 2
A
0 2
9
0 C
y
+x
0 1
3
0 1
7
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
R
0
0
0
0
1
1
1
1
0
0
0
0
0
0
1
1
1
0
0
0
0
0
1
1
1
1
1
0
0
0
0
0
1
1
0
0
0
0
0
0
1
1
0
1
0
0
0
0
1
0
1
0
1
0
0
0
0
1
0
1
0
0
1
0
1
1
x
1
x
0
y
3
y
2
y
1
y
0
0
0
0
0
1
0
0
1
1
0
0
0
0
1
0
1
1
1
MACHINE INSTRUCTIONS