HD6433713 datasheet(44/324 Pages) RENESAS

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2.5.2 Arithmetic Operations

Table 2-5 describes the arithmetic instructions. See figure 3-6 in section 3.5.4, Shift Operations

for their object codes.

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

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

Rd ± 1

→ Rd

DEC

Increments or decrements a general register.

ADDS

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.

Rd decimal adjust

→ Rd

Decimal-adjusts (adjusts to packed BCD) an addition or subtraction

result in a general register by referring to the CCR.

MULXU

× Rs → Rd

Performs 8-bit

× 8-bit unsigned multiplication on data in two general

registers, providing a 16-bit result.

DIVXU

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

result. Word data can be compared only between two general

registers.

NEG

0 – Rd

→ Rd

Obtains the two’s complement (arithmetic complement) of data in a

general register.

Notes: * Size: Operand size

Byte

Word

DAA

DAS

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