6.122.2 Status Register (SREG) and Boolean Formula

S

N ⊕ V, for signed tests.

V

0

Cleared.

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.

R (Result) equals Rd.

Example:

      tst   r0     ; Test r0
      breq  zero   ; Branch if r0=0
      ...
zero:
      nop          ; Branch destination (do nothing)

Words

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