2.2.49 (2) ROTXL (W)
ROTXL (ROTate with eXtend carry Left)
Rotate through Carry
Operation
Rd (left rotation through carry bit)
→
Rd
Assembly-Language Format
ROTXL.W
Rd
Operand Size
Word
Condition Code
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 15.
I
UI
H
U
N
Z
V
C
—
—
—
—
↕
↕
0
↕
Description
This instruction rotates the bits in a 16-bit register Rd (destination register) one bit to the left
through the carry flag. The carry flag is rotated into the least significant bit (bit 0). The most
significant bit rotates into the carry flag.
Available Registers
Rd: R0 to R7, E0 to E7
Operand Format and Number of States Required for Execution
Notes
MSB
LSB
C
b
15
b
0
. . . . . .
Instruction Format
1st byte
2nd byte
3rd byte
4th byte
Register direct
ROTXL.W
Rd
1
2
1
rd
2
No. of
States
Addressing
Mode
Mnemonic
Operands
154