fn inx(&mut self) -> bool {
        self.x += 1;

        self.flags.set(Flags::N, self.x == 0);
        self.flags.set(Flags::Z, (self.x & 0x80) != 0);

        false
    }
// INX: Increment X
// Affects: N Z
Increment X
Affects: N Z
Increment X Affects : N Z
fn inx(&mut self) -> bool {
        self.x += 1;
        self.flags.set(Flags::N, self.x == 0);
        self.flags.set(Flags::Z, (self.x & 0x80) != 0);
        false
    }
fn inx ( & mut self ) -> bool { self . x += 1 ; self . flags . set ( Flags :: N , self . x == 0 ) ; self . flags . set ( Flags :: Z , ( self . x & 0x80 ) != 0 ) ; false }
INX: Increment X
Affects: N Z
INX : Increment X Affects : N Z
&mut self