Adds (Add With Sign Extension) - Hitachi H8/300L Series Programming Manual

2.2.2 ADDS (add with sign extension)

Operation
Rd+1 → Rd
Rd+2 → Rd
Assembly-Language Format
ADDS #1, Rd
ADDS #2, Rd
Operand Size
Word
Condition Code
I H
— — — —
I: Previous value remains unchanged.
H: Previous value remains unchanged.
N: Previous value remains unchanged.
Z: Previous value remains unchanged.
V: Previous value remains unchanged.
C: Previous value remains unchanged.
Description
This instruction adds the immediate value 1 or 2 to word data in a general register. Unlike the
ADD instruction, it does not affect the condition code flags.
Instruction Formats and Number of Execution States
Addressing
mode Mnem.
Register direct ADDS
Register direct ADDS
Note: This instruction cannot access byte-size data.
38
N Z V C
— — — —
Instruction code
Operands 1st byte
#1, Rd 0 B
#2, Rd 0 B
2nd byte 3rd byte
0 0 rd
8 0 rd
No of
4th byte states
2
2