6.6.2 Status Register (SREG) and Boolean Formula

S

N ⊕ V, for signed tests.

V

N ⊕ C, for N and C after the shift.

N

R7. Set if MSB of the result is set; cleared otherwise.

Z

R7 ∧ R6 ∧ R5 ∧ R4 ∧ R3 ∧ R2 ∧ R1 ∧ R0

Set if the result is 0x00; cleared otherwise.

C

Rd0

Set if, before the shift, the LSB of Rd was set; cleared otherwise.

R (Result) equals Rd after the operation.

Example:

      ldi   r16,0x10  ; Load decimal 16 into r16
      asr   r16       ; r16=r16 / 2
      ldi   r17,0xFC  ; Load -4 in r17
      asr   r17       ; r17=r17/2

Words

1 (2 bytes)