Description:
Sets the Negative flag (N) in SREG (status register).
Operation:
(i) N ← 1
Syntax: Operands: Program Counter:
(i) SEN None PC ← PC + 1
16-bit Opcode:
|
1001 |
0100 |
0010 |
1000 |
Status Register (SREG) and Boolean Formula:
|
I |
T |
H |
S |
V |
N |
Z |
C |
|---|---|---|---|---|---|---|---|
|
- |
- |
- |
- |
- |
1 |
- |
- |
N: 1
Negative flag set
Example:
add r2,r19 ; Add r19 to r2 sen ; Set negative flag
Words: 1 (2 bytes)
Cycles: 1