Status Register (SREG) and Boolean Formula

I	T	H	S	V	N	Z	C
–	–	⇔	⇔	⇔	⇔	⇔	⇔

H

Rd3

S

N ⊕ V, for signed tests.

V

N ⊕ C, for N and C after the shift.

N

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

Z

R7 • R6 • R5 • R4 • R3 • R2 • R1 • R0

Set if the result is $00; 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)
Cycles: 1