2.2.55 (2) SHLL (W)
SHLL (SHift Logical Left)
Shift Logical
Operation
Rd (left logical shift)
→
Rd
Assembly-Language Format
SHLL.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 shifts the bits in a 16-bit register Rd (destination operand) one bit to the left. The
most significant bit shifts into the carry flag. The least significant bit (bit 0) is cleared to 0.
Available Registers
Rd: R0 to R7, E0 to E7
Operand Format and Number of States Required for Execution
Notes
The SHLL instruction differs from the SHAL instruction in its effect on the overflow flag.
LSB
MSB
b
15
b
0
. . . . . .
C
0
Instruction Format
1st byte
2nd byte
3rd byte
4th byte
Register direct
SHLL.W
Rd
1
0
1
rd
2
No. of
States
Addressing
Mode
Mnemonic
Operands
168