FUJITSU FR family 32-bit microcontroller instruction manuel CM71-00101-5E - Manual (Page 165)

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CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.47 LSR (Logical Shift to the Right Direction)
Makes a logical right shift of the word data in "Ri" by "Rj" bits, stores the result to "Ri".
Only the lower 5 bits of "Rj", which designates the size of the shift, are valid and the
shift range is 0 to 31 bits.
■
LSR (Logical Shift to the Right Direction)
Assembler format: LSR Rj, Ri
Operation: Ri >> Rj
→
Ri
Flag change:
N: Set when the MSB of the operation result is "1", cleared when the MSB is "0".
Z: Set when the operation result is "0", cleared otherwise.
V: Unchanged
C: Holds the bit value shifted last. Cleared when the shift amount is "0".
Execution cycles: 1 cycle
Instruction format:
Example: LSR R2, R3
N Z V C
C C – C
MSB LSB
1 0 1 1 0 0 1 0 Rj Ri
R2
R3
R2
R3 0 0 F F F F F F
0 0 0 0 0 0 0 8
F F F F F F F F
0 0 0 0 0 0 0 8
N Z V C
CCR CCR
N Z V C
0 0 0 1 0 0 0 0
Before execution After execution
Instruction bit pattern : 1011 0010 0010 0011