NOT NOT operation Flags: Not altered
NOT destination
Logic destination ← NOT(destination) ; One's complement
NOT inverts each bit in its operand, i.e. forms the one's
complement.
NOT truth table
a NOT a
0 1
1 0
Opcode Format
F6 /2 NOT r/m8,r8
F7 /2 NOT r/m16,r16
F7 /2 NOT r/m32,r32
Length and timing
Operands Bytes 8088 186 286 386 486 Pentium
reg 2 3 3 2 2 1 1 NP
mem 2+d(0-2) 24+EA 13 7 6 3 3 NP