6.91.2 Status Register (SREG) and Boolean Formula

H

Rd3

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

Rd7

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

R (Result) equals Rd after the operation.

Example:

      lsl   r18     ; Multiply r19:r18 by two
      rol   r19     ; r19:r18 is a signed or unsigned two-byte integer
      brcs  oneenc  ; Branch if carry set
      ...
oneenc: 
      nop           ; Branch destination (do nothing)

Words

1 (2 bytes)