3) Rotl (L) - Hitachi H8/300H Series Programming Manual

2.2.47 (3) ROTL (L)

ROTL (ROTate Left)
Operation
ERd (left rotation) → ERd
Assembly-Language Format
ROTL.L ERd
Operand Size
Longword
Description
This instruction rotates the bits in a 32-bit register ERd (destination register) one bit to the left.
The most significant bit is rotated to the least significant bit (bit 0), and also copied to the carry
flag.
MSB
C b
31
Available Registers
ERd: ER0 to ER7
Operand Format and Number of States Required for Execution
Addressing
Mnemonic
Mode
Register direct ROTL.L
Notes
. . . . . .
Operands
1st byte
ERd 1 2
149
Condition Code
I UI H U
— — — —
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 31.
LSB
b
0
Instruction Format
2nd byte 3rd byte
B 0 erd
Rotate
N Z V C
0 —
No. of
States
4th byte
2