Sub (Subtract Binary) (Word) - Renesas H8/300 Series Programming Manual

SUB (SUBtract binary) (word)

<Operation>
Rd - Rs Rd
<Assembly-Language Format>
SUB.W Rs, Rd
<Examples>
SUB.W R0, R1
<Operand Size>
Word
<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>
Addressing
mode
Register direct
Mnem. Operands
SUB.W Rs, Rd
<Condition Code>
I
— —
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" if an overflow occurs;
otherwise cleared to "0."
C: Set to "1" if there is a borrow from bit
15; otherwise cleared to "0."
Instruction code
1st byte 2nd byte
1 9 0 rs 0 rd
112
H N Z
—
3rd byte 4th byte
SUB
V C
No. of
states
2