Rev. 1.00, 05/04, page 32 of 544
Table 2.4
Arithmetic Operations Instructions (1)
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. (Subtraction on
immediate data and data in a general register cannot be performed in
bytes. Use the SUBX or ADD instruction.)
ADDX
SUBX
B Rd
±
Rs
±
C
→
Rd, Rd
±
#IMM
±
C
→
Rd
Performs addition or subtraction with carry 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
Adds or subtracts the value 1 or 2 to or from data in a general
register. (Only the value 1 can be added to or subtracted from byte
operands.)
ADDS
SUBS
L 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
B
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
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.
MULXS B/W
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.
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.
Note:
*
Size refers to the operand size.
B: Byte
W: Word
L: Longword
Содержание H8S/2111B
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