HD6433644R datasheet(53/549 Pages) RENESAS

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Section 2 CPU

Rev. 6.00 Sep 12, 2006 page 33 of 526

REJ09B0326-0600

2.5.2

Arithmetic Operations

Table 2.5 describes the arithmetic instructions.

Table 2.5

Arithmetic Instructions

Instruction

Size*

Function

ADD

SUB

B/W

Rd ± Rs

→ Rd, Rd + #IMM → Rd

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

SUBX

Rd ± Rs ± C

→ Rd, Rd ± #IMM ± C → Rd

Performs addition or subtraction with carry on data in two general

registers, or addition or subtraction with carry on immediate data and

data in a general register.

INC

DEC

Rd ± 1

→ Rd

Increments or decrements a general register

ADDS

SUBS

Rd ± 1

→ Rd, Rd ± 2 → Rd

Adds or subtracts 1 or 2 to or from a general register

DAA

DAS

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

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

B: Byte

W: Word

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