2) Sub (Subtract Binary) (Word) - Hitachi H8/300L Series Programming Manual

2.2.53(2) SUB (subtract binary) (word)

Operation
Rd - Rs → Rd
Assembly - Language Format
SUB.W Rs, Rd
Operand Size
Word
Condition Code
I H
∆
— — —
I: Previous value remains unchanged.
H: Set to 1 when there is a borrow from bit 11; otherwise cleared to 0.
N: Set to 1 when the result is negative; otherwise cleared to 0.
Z: Set to 1 when the result is zero; otherwise cleared to 0.
V: Set to 1 when an overflow occurs; otherwise cleared to 0.
C: Set to 1 when there is a borrow from bit 15; otherwise cleared to 0.
Description
This instruction subtracts a 16-bit source register from a 16-bit destination register and places
the result in the destination register.
Instruction Formats and Number of Execution States
Addressing
mode Mnem.
Register direct SUB.W
N Z V C
∆ ∆ ∆ ∆
Instruction code
Operands 1st byte
Rs, Rd 1 9
2nd byte 3rd byte
0 rs 0 rd
No. of
4th byte states
2
123