diff --git a/emulator/core/src/devices.rs b/emulator/core/src/devices.rs
index 018d1b4..28fb24c 100644
--- a/emulator/core/src/devices.rs
+++ b/emulator/core/src/devices.rs
@@ -175,11 +175,11 @@ pub trait Inspectable {
 
 
 pub type DeviceId = u32;
-pub trait Resource: Any + 'static + Transmutable {}
+pub trait DynDevice: Any + 'static + Transmutable {}
 
-pub type Device = Rc<RefCell<dyn Resource>>;
+pub type Device = Rc<RefCell<dyn DynDevice>>;
 
-impl<T> Resource for T where T: Transmutable + 'static {}
+impl<T> DynDevice for T where T: Transmutable + 'static {}
 
 pub trait Transmutable {
     #[inline]
@@ -209,12 +209,12 @@ pub trait Transmutable {
 }
 
 // Taken from deno_core
-fn is<T: Resource>(field: &dyn Resource) -> bool {
+fn is<T: DynDevice>(field: &dyn DynDevice) -> bool {
     field.type_id() == TypeId::of::<T>()
 }
 
 // Taken from deno_core
-pub fn downcast_rc_refc<'a, T: Resource>(field: &'a Device) -> Option<&'a Rc<RefCell<T>>> {
+pub fn downcast_rc_refc<'a, T: DynDevice>(field: &'a Device) -> Option<&'a Rc<RefCell<T>>> {
     if is::<T>(field.borrow().deref()) {
         let ptr = field as *const Rc<RefCell<_>> as *const Rc<RefCell<T>>;
         #[allow(clippy::undocumented_unsafe_blocks)]
@@ -232,54 +232,12 @@ pub fn wrap_transmutable<T: Transmutable + 'static>(value: T) -> TransmutableBox
 
 static NEXT_ID: AtomicU32 = AtomicU32::new(1);
 
-pub fn get_next_id() -> u32 {
+pub fn get_next_device_id() -> u32 {
     let next = NEXT_ID.load(Ordering::Acquire);
     NEXT_ID.store(next + 1, Ordering::Release);
     next
 }
 
-// #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
-// pub struct DeviceId(usize);
-
-// impl DeviceId {
-//     pub fn new() -> Self {
-//         let next = NEXT_ID.load(Ordering::Acquire);
-//         NEXT_ID.store(next + 1, Ordering::Release);
-//         Self(next)
-//     }
-// }
-
-// impl Default for DeviceId {
-//     fn default() -> Self {
-//         Self::new()
-//     }
-// }
-
-// #[derive(Clone)]
-// pub struct Device(DeviceId, TransmutableBox);
-
-// impl Device {
-//     pub fn new<T>(value: T) -> Self
-//     where
-//         T: Transmutable + 'static,
-//     {
-//         Self(DeviceId::new(), wrap_transmutable(value))
-//     }
-
-//     pub fn id(&self) -> DeviceId {
-//         self.0
-//     }
-
-//     pub fn borrow_mut(&self) -> RefMut<'_, Box<dyn Transmutable>> {
-//         self.1.borrow_mut()
-//     }
-
-//     pub fn try_borrow_mut(&self) -> Result<RefMut<'_, Box<dyn Transmutable>>, BorrowMutError> {
-//         self.1.try_borrow_mut()
-//     }
-// }
-
-
 /*
 #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
 pub struct DeviceId(usize);
diff --git a/emulator/core/src/lib.rs b/emulator/core/src/lib.rs
index 0f4e6ae..9db26dc 100644
--- a/emulator/core/src/lib.rs
+++ b/emulator/core/src/lib.rs
@@ -7,7 +7,7 @@ mod memory;
 mod system;
 
 pub use crate::devices::{
-    Address, Addressable, Steppable, Interruptable, Debuggable, Inspectable, Transmutable, TransmutableBox, Resource
+    Address, Addressable, Steppable, Interruptable, Debuggable, Inspectable, Transmutable, TransmutableBox, DynDevice
 };
 pub use crate::devices::{
     read_beu16, read_beu32, read_leu16, read_leu32, write_beu16, write_beu32, write_leu16, write_leu32, wrap_transmutable,
diff --git a/emulator/core/src/system.rs b/emulator/core/src/system.rs
index f4f2070..e2ea657 100644
--- a/emulator/core/src/system.rs
+++ b/emulator/core/src/system.rs
@@ -3,7 +3,7 @@ use std::cell::{RefCell, RefMut};
 use std::collections::{BTreeMap, HashMap};
 use femtos::{Instant, Duration};
 
-use crate::devices::{downcast_rc_refc, get_next_id, Device, DeviceId, Resource};
+use crate::devices::{downcast_rc_refc, get_next_device_id, Device, DeviceId, DynDevice};
 use crate::{Address, Bus, Error, InterruptController};
 
 
@@ -47,6 +47,12 @@ pub struct DeviceSettings {
 
 impl Default for DeviceSettings {
     fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl DeviceSettings {
+    fn new() -> Self {
         Self {
             name: None,
             address: None,
@@ -54,6 +60,26 @@ impl Default for DeviceSettings {
             queue: false,
         }
     }
+
+    fn with_address(&mut self, addr: Address) -> &mut Self {
+        self.address = Some(addr);
+        self
+    }
+
+    fn with_name(&mut self, name: String) -> &mut Self {
+        self.name = Some(name);
+        self
+    }
+
+    fn debuggable(&mut self, debuggable: bool) -> &mut Self {
+        self.debuggable = debuggable;
+        self
+    }
+
+    fn queue(&mut self, queue: bool) -> &mut Self {
+        self.queue = queue;
+        self
+    }
 }
 
 impl System {
@@ -65,7 +91,11 @@ impl System {
         self.interrupt_controller.borrow_mut()
     }
 
-    pub fn get_device<T: Resource>(&self, device: DeviceId) -> Result<Rc<RefCell<T>>, Error> {
+    pub fn get_id_from_name(&self, name: &str) -> Option<DeviceId> {
+        self.id_to_name.iter().find_map(|(key, &ref val)| if val == name { Some(*key)} else { None })
+    }
+
+    pub fn get_device<T: DynDevice>(&self, device: DeviceId) -> Result<Rc<RefCell<T>>, Error> {
         self.devices
             .get(&device)
             .and_then(|rc| downcast_rc_refc::<T>(rc))
@@ -73,10 +103,9 @@ impl System {
             .ok_or_else(|| Error::new(format!("system: bad device id {}", device)))
     }
 
-    pub fn get_device_by_name<T: Resource>(&self, name: &str) -> Result<Rc<RefCell<T>>, Error> {
-        let id = self.id_to_name.iter().find_map(|(key, &ref val)| if val == name { Some(key)} else { None });
-        if let Some(id) = id {
-            self.get_device(*id)
+    pub fn get_device_by_name<T: DynDevice>(&self, name: &str) -> Result<Rc<RefCell<T>>, Error> {
+        if let Some(id) = self.get_id_from_name(name) {
+            self.get_device(id)
         } else {
             Err(Error::new(format!("system: could not find device  {}", name)))
         }
@@ -90,25 +119,24 @@ impl System {
     }
 
     pub fn get_dyn_device_by_name(&self, name: &str) -> Result<Device, Error> {
-        let id = self.id_to_name.iter().find_map(|(key, &ref val)| if val == name { Some(key)} else { None });
-        if let Some(id) = id {
-            self.get_dyn_device(*id)
+        if let Some(id) = self.get_id_from_name(name) {
+            self.get_dyn_device(id)
         } else {
             Err(Error::new(format!("system: could not find device  {}", name)))
         }
     }
 
-    pub fn add_device<T: Resource>(&mut self, device: T, settings: DeviceSettings) -> Result<DeviceId, Error> {
+    pub fn add_device<T: DynDevice>(&mut self, device: T, settings: DeviceSettings) -> Result<DeviceId, Error> {
         self.add_device_rc_ref(Rc::new(RefCell::new(device)), settings)
     }
 
-    pub fn add_device_rc_ref<T: Resource>(&mut self, device: Rc<RefCell<T>>, settings: DeviceSettings) -> Result<DeviceId, Error> {
+    pub fn add_device_rc_ref<T: DynDevice>(&mut self, device: Rc<RefCell<T>>, settings: DeviceSettings) -> Result<DeviceId, Error> {
         let device = device as Device;
         self.add_device_rc_dyn(device, settings)
     }
 
     pub fn add_device_rc_dyn(&mut self, device: Device, settings: DeviceSettings) -> Result<DeviceId, Error> {
-        let id = get_next_id();
+        let id = get_next_device_id();
         self.id_to_name.insert(id, settings.name.unwrap_or_default());
 
         self.devices.insert(id, device.clone());
@@ -125,7 +153,7 @@ impl System {
         Ok(id)
     }
 
-    pub fn add_named_device<T: Resource>(&mut self, name: &str, device: T) -> Result<DeviceId, Error> {
+    pub fn add_named_device<T: DynDevice>(&mut self, name: &str, device: T) -> Result<DeviceId, Error> {
         self.add_device(device, DeviceSettings {
             name: Some(name.to_owned()),
             queue: true,
@@ -133,7 +161,7 @@ impl System {
         })
     }
 
-    pub fn add_addressable_device<T: Resource>(&mut self, addr: Address, device: T) -> Result<DeviceId, Error> {
+    pub fn add_addressable_device<T: DynDevice>(&mut self, addr: Address, device: T) -> Result<DeviceId, Error> {
         self.add_device(device, DeviceSettings {
             name: Some(format!("mem{:x}", addr)),
             address: Some(addr),
@@ -142,7 +170,7 @@ impl System {
         })
     }
 
-    pub fn add_peripheral<T: Resource>(&mut self, name: &str, addr: Address, device: T) -> Result<DeviceId, Error> {
+    pub fn add_peripheral<T: DynDevice>(&mut self, name: &str, addr: Address, device: T) -> Result<DeviceId, Error> {
         self.add_device(device, DeviceSettings {
             name: Some(name.to_owned()),
             address: Some(addr),
@@ -151,7 +179,7 @@ impl System {
         })
     }
 
-    pub fn add_interruptable_device<T: Resource>(&mut self, name: &str, device: T) -> Result<DeviceId, Error> {
+    pub fn add_interruptable_device<T: DynDevice>(&mut self, name: &str, device: T) -> Result<DeviceId, Error> {
         self.add_device(device, DeviceSettings {
             name: Some(name.to_owned()),
             queue: true,
@@ -194,7 +222,7 @@ impl System {
         loop {
             self.step()?;
 
-            if self.get_next_event_device() == device {
+            if self.get_next_event_device_id() == device {
                 break;
             }
         }
@@ -206,7 +234,7 @@ impl System {
         loop {
             self.step()?;
 
-            if self.get_dyn_device(self.get_next_event_device()).unwrap().borrow_mut().as_debuggable().is_some() {
+            if self.get_dyn_device(self.get_next_event_device_id()).unwrap().borrow_mut().as_debuggable().is_some() {
                 break;
             }
         }
@@ -244,7 +272,7 @@ impl System {
         }
     }
 
-    pub fn get_next_event_device(&self) -> DeviceId {
+    pub fn get_next_event_device_id(&self) -> DeviceId {
         self.event_queue[self.event_queue.len() - 1].device
     }