Hitachi H8/3637 Hardware Manual page 42

Figure 2.6 shows the instruction code format of arithmetic, logic, and shift instructions.
15
op
15
15
op
15
op
15
op
15
op
15
Legend:
op: Operation field
rm, rn: Register field
IMM: Immediate data
Figure 2.6 Arithmetic, Logic, and Shift Instruction Codes
32
8 7
rm
8 7
op
8 7
rm
8 7
rn
8 7
rm
8 7
rn
8 7
op
0
ADD, SUB, CMP,
rn
ADDX, SUBX (Rm)
0
ADDS, SUBS, INC, DEC,
rn
DAA, DAS, NEG, NOT
0
rn
MULXU, DIVXU
0
ADD, ADDX, SUBX,
IMM
CMP (#XX:8)
0
rn
AND, OR, XOR (Rm)
0
IMM
AND, OR, XOR (#xx:8)
0
SHAL, SHAR, SHLL, SHLR,
rn
ROTL, ROTR, ROTXL, ROTXR