HD6433832S Datasheet, PDF (45/560 Pages) Renesas Technology Corp – single-chip microcomputers

2.5.2 Arithmetic Operations
Table 2.5 describes the arithmetic instructions.
Table 2.5 Arithmetic Instructions
Instruction Size*
Function
ADD
B/W
Rd ± Rs → Rd, Rd + #IMM → Rd
SUB
Performs addition or subtraction on data in two general registers, or
addition on immediate data and data in a general register. Immediate
data cannot be subtracted from data in a general register. Word data
can be added or subtracted only when both words are in general
registers.
ADDX
B
Rd ± Rs ± C → Rd, Rd ± #IMM ± C → Rd
SUBX
Performs addition or subtraction with carry or borrow on byte data in
two general registers, or addition or subtraction on immediate data and
data in a general register.
INC
B
Rd ± 1 → Rd
DEC
Increments or decrements a general register
ADDS
W
Rd ± 1 → Rd, Rd ± 2 → Rd
SUBS
Adds or subtracts immediate data to or from data in a general register.
The immediate data must be 1 or 2.
DAA
B
Rd decimal adjust → Rd
DAS
Decimal-adjusts (adjusts to packed 4-bit BCD) an addition or
subtraction result in a general register by referring to the CCR
MULXU
B
Rd × Rs → Rd
Performs 8-bit × 8-bit unsigned multiplication on data in two general
registers, providing a 16-bit result
DIVXU
B
Rd ÷ Rs → Rd
Performs 16-bit ÷ 8-bit unsigned division on data in two general
registers, providing an 8-bit quotient and 8-bit remainder
CMP
B/W
Rd – Rs, Rd – #IMM
Compares data in a general register with data in another general
register or with immediate data, and the result is stored in the CCR.
Word data can be compared only between two general registers.
NEG
B
0 – Rd → Rd
Obtains the two’s complement (arithmetic complement) of data in a
general register
Note: * Size: Operand size
B: Byte
W: Word
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