H8SLASH3028F datasheet(61/923 Pages) RENESAS

61 / 923 page

Rev. 2.00, 09/03, page 31 of 890

Table 2.4

Arithmetic Operation Instructions

Instruction

Size*

Function

ADD,SUB

B/W/L

Rd ± 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. (Immediate byte data cannot

be subtracted from data in a general register. Use the SUBX or ADD

instruction.)

ADDX,

SUBX

Rd ± Rs ± C

→ Rd, Rd ± #IMM ± C → Rd

Performs addition or subtraction with carry or borrow on data in two general

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

INC,

DEC

B/W/L

Rd ± 1

→ Rd, Rd ± 2 → Rd

Increments or decrements a general register by 1 or 2. (Byte operands can

be incremented or decremented by 1 only.)

ADDS,

SUBS

Rd ± 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

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

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