pub enum Via6522Port {
    A(u8),
    B(u8)
}

#[derive(Default)]
pub struct Via6522 {
    data_bus: u8,
    address_bus: u16,
    port_a_state: u8,
    port_b_data: u8,
    port_a_direction: u8,
    port_b_direction: u8,
    memory_offset: u16,
}

impl Via6522 {
    pub fn new(offset: u16) -> Self {
        Via6522 {
            memory_offset: offset,
            ..Default::default()
        }
    }

    pub fn set_port_direction(&mut self, port: Via6522Port) {
        match port {
            Via6522Port::A(x) => {
                self.port_a_direction = x;
            },
            Via6522Port::B(x) => {
                self.port_b_direction = x;
            }
        }
    }

    /// check for output pins and see what they say
    pub fn update_pins(&mut self) {

    }

    /// check for input mode pins and see what they say
    pub fn read_pins(&self) {

    }
}