H8SLASH3003 datasheet(51/715 Pages) RENESAS

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Table 2-4 Arithmetic Operation Instructions (cont)

Instruction

Size*

Function

DIVXU

B/W

Rd ÷ 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.

DIVXS

B/W

Rd ÷ Rs

→ Rd

Performs signed 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.

CMP

B/W/L

Rd – Rs, Rd – #IMM

Compares data in a general register with data in another general register or

with immediate data, and sets CCR according to the result.

NEG

B/W/L

0 – Rd

→ Rd

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

EXTS

W/L

Rd (sign extension)

→ Rd

Extends byte data in the lower 8 bits of a 16-bit register to word data, or

extends word data in the lower 16 bits of a 32-bit register to longword data,

by extending the sign bit.

EXTU

W/L

Rd (zero extension)

→ Rd

Extends byte data in the lower 8 bits of a 16-bit register to word data, or

extends word data in the lower 16 bits of a 32-bit register to longword data,

by padding with zeros.

Note: * Size refers to the operand size.

B: Byte

W: Word

Longword

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