Table 2.4 Arithmetic Operations Instructions (1) - Renesas H8S/2437 Hardware Manual

Table 2.4 Arithmetic Operations Instructions (1)
Instruction Size*
ADD B/W/L
SUB
ADDX B
SUBX
INC B/W/L
DEC
ADDS L
SUBS
DAA B
DAS
MULXU B/W
MULXS B/W
DIVXU B/W
Note: Size refers to the operand size.
B: Byte
W: Word
L: Longword
Rev. 1.00, 09/03, page 34 of 704
Function
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 byte data in a general register. Use the SUBX or ADD
instruction.)
Rd ± Rs ± C → Rd, Rd ± #IMM ± C → Rd
Performs addition or subtraction with carry or borrow on byte data in two
general registers, or on immediate data and data in a general register.
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)
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.
Rd (decimal adjust) → Rd
Decimal-adjusts an addition or subtraction result in a general register by
referring to the CCR to produce 4-bit BCD data.
Rd × 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.
Rd × 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.
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.