MITSUBISHI MICROCOMPUTERS
MITSUBISHI MICROCOMPUTERS
4280 Group
4280 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTERS
MACHINE INSTRUCTIONS (CONTINUED)
Instruction code
Parameter
Skip condition
Detailed description
Mnemonic
SB j
Function
Hexadecimal
notation
Type of
instructions
D8 D7 D6 D5 D4 D3 D2 D1 D0
0
0
0
0
0
0
1
1
0
0
0
1
1
0
0
1
1
0
1
1
0
j1 j0
j1 j0
j1 j0
0 5
0 4
0 2
C
1
1
1
1
1
1
(Mj(DP)) ← 1
–
–
–
–
Sets (1) the contents of bit j (bit specified by the value j in the immediate field) of M(DP).
Clears (0) the contents of bit j (bit specified by the value j in the immediate field) of M(DP).
+j
j = 0 to 3
RB j
C
(Mj(DP)) ← 0
–
+j
j = 0 to 3
SZB j
j
(Mj(DP)) = 0 ?
j = 0 to 3
(Mj(DP)) = 0
j = 0 to 3
Skips the next instruction when the contents of bit j (bit specified by the value j in the immediate field)
of M(DP) is “0.”
0
0
0
1
0
0
1
1
0
0
0
1
1
1
0
0
1
0
0
1
1
1
0
0
1
0 2
0 2
0 B
6
5
n
a
1
2
1
2
SEAM
SEA n
(A) = (M(DP)) ?
(A) = (M(DP))
–
–
Skips the next instruction when the contents of register A is equal to the contents of M(DP).
(A) = n ?
(A) = n
Skips the next instruction when the contents of register A is equal to the value n in the immediate field.
n = 0 to 15
n = 0 to 15
n3 n2 n1 n0
B a
a6 a5 a4 a3 a2 a1 a0
1
8
1
2
1
2
(PCL) ← a6–a0
–
–
–
–
Branch within a page : Branches to address a in the identical page.
Branch out of a page : Branches to address a in page p.
+a
BL p, a
0
1
0
1
0
1
1
p3 p2 p1 p0
0 3
p
a
(PCH) ← p
(PCL) ← a6–a0
(Note)
a6 a5 a4 a3 a2 a1 a0
1 8
+a
BA a
0
1
0
1
0
0
0
0
0
0
1
0 0
1
a
2
2
2
2
(PCL) ← (a6–a4, A3–A0)
–
–
–
–
Branch within a page : Branches to address (a6 a5 a4 A3 A2 A1 A0) determined by replacing the low-
order 4 bits of the address a in the identical page with register A.
a6 a5 a4 a3 a2 a1 a0
1 8
+a
BLA p, a
0
1
0
1
0
0
1
0
0
0
0
0 1
0
p
(PCH) ← p
Branch out of a page : Branches to address (a6 a5 a4 A3 A2 A1 A0) determined by replacing the low-
order 4 bits of the address a in page p with register A.
(PCL) ← (a6–a4, A3–A0)
(Note)
a6 a5 a4 p3 p2 p1 p0
1 8
+a
Note : p is 0 to 7 for M34280E1, and p is 0 to 7 for M34280M1.
MITSUBISHI
ELECTRIC
MITSUBISHI
ELECTRIC
30
31
MITSUBISHI [ Mitsubishi Group ]
