moa/src/devices.rs

48 lines
1.3 KiB
Rust

use std::rc::Rc;
use std::cell::{RefCell, RefMut};
use crate::error::Error;
use crate::system::System;
use crate::memory::{Addressable};
pub type Clock = u64;
pub trait Steppable {
fn step(&mut self, system: &System) -> Result<Clock, Error>;
fn on_error(&mut self, _system: &System) { }
}
pub trait Interruptable {
fn interrupt_state_change(&mut self, system: &System, state: bool, priority: u8, number: u8) -> Result<(), Error>;
}
pub trait AddressableDevice: Addressable + Steppable { }
pub trait InterruptableDevice: Interruptable + Steppable { }
impl<T: Addressable + Steppable> AddressableDevice for T { }
impl<T: Interruptable + Steppable> InterruptableDevice for T { }
pub type AddressableDeviceBox = Rc<RefCell<Box<dyn AddressableDevice>>>;
pub type InterruptableDeviceBox = Rc<RefCell<Box<dyn InterruptableDevice>>>;
pub type AddressableDeviceRefMut<'a> = RefMut<'a, Box<dyn AddressableDevice>>;
pub fn wrap_addressable<T: AddressableDevice + 'static>(value: T) -> AddressableDeviceBox {
Rc::new(RefCell::new(Box::new(value)))
}
pub fn wrap_interruptable<T: InterruptableDevice + 'static>(value: T) -> InterruptableDeviceBox {
Rc::new(RefCell::new(Box::new(value)))
}
pub enum Device {
Addressable(AddressableDeviceBox),
Interruptable(InterruptableDeviceBox),
}