You played it.
Now build the
machine that ran it.

// 0x6D  ADC absolute — 4 cycles
fn adc(&mut self, bus: &mut Bus, mode: Mode) {
    let m   = self.operand(bus, mode);
    let c   = u16::from(self.p.contains(Flags::C));
    let sum = u16::from(self.a) + u16::from(m) + c;
    let out = sum as u8;

    // V: the result’s sign disagrees with BOTH inputs
    self.p.set(Flags::V, (self.a ^ out) & (m ^ out) & 0x80 != 0);
    self.p.set(Flags::C, sum > 0xFF);
    self.a = out;
    self.set_zn(out);
}