Hitachi H8S/2199 Hardware Manual page 57

Table 2.4 Arithmetic Instructions
Instruction Size*
ADD B/W/L
SUB
ADDX B
SUBX
INC B/W/L
DEC
ADDS B
SUBS
DAA B/W
DAS
MULXU B/W
MULXS B/W
DIVXU B/W
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 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
Rev. 1.0, 02/00, page 37 of 1141