hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 84

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Section 2 CPU
2.5.2
Table 2.5 describes the arithmetic instructions.
Table 2.5
Instruction
ADD
SUB
ADDX
SUBX
INC
DEC
ADDS
SUBS
DAA
DAS
MULXU
DIVXU
CMP
NEG
Notes: *
Rev. 7.00 Mar 10, 2005 page 42 of 652
REJ09B0042-0700
Arithmetic Operations
Size: Operand size
B:
W:
Arithmetic Instructions
Byte
Word
Size *
B/W
B
B
W
B
B
B
B/W
B
Function
Performs addition or subtraction on data in two general registers,
or addition on immediate data and data in a general register.
Immediate data cannot be subtracted from data in a general
register. Word data can be added or subtracted only when both
words are in general registers.
Rd ± Rs ± C → Rd, Rd ± #IMM ± C → Rd
Performs addition or subtraction with carry or borrow on byte data
in two general registers, or addition or subtraction on immediate
data and data in a general register.
Rd ± 1 → Rd
Increments or decrements a general register by 1.
Rd ± 1 → Rd, Rd ± 2 → Rd
Adds or subtracts 1 or 2 to or from a general register
Rd decimal adjust → Rd
Decimal-adjusts (adjusts to 4-bit BCD) an addition or subtraction
result in a general register by referring to the CCR
Rd × Rs → Rd
Performs 8-bit × 8-bit unsigned multiplication on data in two
general registers, providing a 16-bit result
Rd ÷ Rs → Rd
Performs 16-bit ÷ 8-bit unsigned division on data in two general
registers, providing an 8-bit quotient and 8-bit remainder
Compares data in a general register with data in another general
register or with immediate data, and indicates the result in the
CCR. Word data can be compared only between two general
registers.
0 – Rd → Rd
Obtains the two’s complement (arithmetic complement) of data in a
general register
Rd ± Rs → Rd, Rd + #IMM → Rd
Rd – Rs, Rd – #IMM