2) Rotr (W) - Hitachi H8/300H Series Programming Manual

2.2.48 (2) ROTR (W)

ROTR (ROTate Right)
Operation
Rd (right rotation) → Rd
Assembly-Language Format
ROTR.W Rd
Operand Size
Word
Description
This instruction rotates the bits in a 16-bit register Rd (destination register) one bit to the right.
The least significant bit is rotated to the most significant bit (bit 15), and also copied to the carry
flag.
MSB
b
15
Available Registers
Rd: R0 to R7, E0 to E7
Operand Format and Number of States Required for Execution
Addressing
Mnemonic
Mode
Register direct ROTR.W
Notes
. . . . . .
Operands
1st byte
Rd 1
Condition Code
I UI H
— — — —
H: Previous value remains unchanged.
N: Set to 1 if the result is negative; otherwise
cleared to 0.
Z: Set to 1 if the result is zero; otherwise
cleared to 0.
V: Always cleared to 0.
C: Receives the previous value in bit 0.
LSB
b C
0
Instruction Format
2nd byte 3rd byte
3 9 rd
151
Rotate
U N Z V C
0
No. of
States
4th byte
2