HD64F2145 datasheet(84/829 Pages) RENESAS

84 / 829 page

Rev. 2.0, 08/02, page 44 of 788

Table 2.4

Arithmetic Operations Instructions (1)

Instruction

Size*

Function

ADD

SUB

B/W/L

± Rs → Rd, Rd ± #IMM → Rd

Performs addition or subtraction on data in two general registers, or on

immediate data and data in a general register. (Subtraction on

immediate data and data in a general register cannot be performed in

bytes. Use the SUBX or ADD instruction.)

ADDX

SUBX

BRd

± Rs ± C → Rd, Rd ± #IMM ± C → Rd

Performs addition or subtraction with carry on data in two general

registers, or on immediate data and data in a general register.

INC

DEC

B/W/L

± 1 → Rd, Rd ± 2 → Rd

Adds or subtracts the value 1 or 2 to or from data in a general register.

(Only the value 1 can be added to or subtracted from byte operands.)

ADDS

SUBS

LRd

± 1 → Rd, Rd ± 2 → Rd, Rd ± 4 → Rd

Adds or subtracts the value 1, 2, or 4 to or from data in a 32-bit register.

DAA

DAS

Rd (decimal adjust)

→ Rd

Decimal-adjusts an addition or subtraction result in a general register by

referring to CCR to produce 4-bit BCD data.

MULXU

B/W

× Rs → Rd

Performs unsigned multiplication on data in two general registers: either

8 bits

× 8 bits → 16 bits or 16 bits × 16 bits → 32 bits.

MULXS

B/W

× Rs → Rd

Performs signed multiplication on data in two general registers: either 8

bits

× 8 bits → 16 bits or 16 bits × 16 bits → 32 bits.

DIVXU

B/W

÷ Rs → Rd

Performs unsigned division on data in two general registers: either 16

bits

÷ 8 bits → 8-bit quotient and 8-bit remainder or 32 bits ÷ 16 bits →

16-bit quotient and 16-bit remainder.

Note:* Size refers to the operand size.

B: Byte

W: Word

L: Longword

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