Status Register (SREG) and Boolean Formula

I T H S V N Z C
I
0 if s = 7; Unchanged otherwise.
T
0 if s = 6; Unchanged otherwise.
H
0 if s = 5; Unchanged otherwise.
S
0 if s = 4; Unchanged otherwise.
V
0 if s = 3; Unchanged otherwise.
N
0 if s = 2; Unchanged otherwise.
Z
0 if s = 1; Unchanged otherwise.
C
0 if s = 0; Unchanged otherwise.

Example:

bclr 0 ; Clear Carry Flag
bclr 7 ; Disable interrupts
Words
1 (2 bytes)
Cycles
1