diff --git a/src/card.rs b/src/card.rs
index 6f92763..d2aca66 100644
--- a/src/card.rs
+++ b/src/card.rs
@@ -74,6 +74,8 @@ pub trait Card {
         None
     }
 
+    fn get_settings(&self) -> String;
+
     fn settings_ui(_settings: ron::Value) -> anyhow::Result<impl SettingsUi>
     where
         Self: Sized;
diff --git a/src/main.rs b/src/main.rs
index f2e7211..fb18bd1 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -65,9 +65,14 @@ impl AltairEmulator {
         } else {
             eframe::get_value(cc.storage.unwrap(), "options").unwrap()
         };
+        let cards = if cc.storage.unwrap().get_string("cards").is_none() {
+            Vec::new() 
+        } else {
+            eframe::get_value(cc.storage.unwrap(), "cards").unwrap()
+        };
         Self {
             textures: Textures::new(&cc.egui_ctx),
-            state: EmuState::new(audio_tx, options),
+            state: EmuState::new(audio_tx, options, cards),
             windows: HashMap::new(),
         }
     }
@@ -117,6 +122,7 @@ impl AltairEmulator {
 impl eframe::App for AltairEmulator {
     fn save(&mut self, storage: &mut dyn eframe::Storage) {
         eframe::set_value(storage, "options", &self.state.options());
+        eframe::set_value(storage, "cards", &self.state.save_cards());
     }
     fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
         ctx.set_pixels_per_point(1.0);
diff --git a/src/option_window.rs b/src/option_window.rs
index 48046eb..3933b16 100644
--- a/src/option_window.rs
+++ b/src/option_window.rs
@@ -17,7 +17,7 @@ use crate::{
 pub struct OptionWindow {
     options: Options,
     category: OptionsCategory,
-    card_options: Vec<(&'static str, Box<dyn SettingsUi>)>,
+    card_options: Vec<(&'static Type, Box<dyn SettingsUi>)>,
     select_idx: Option<usize>,
 }
 
@@ -30,7 +30,7 @@ enum OptionsCategory {
 impl OptionWindow {
     pub fn new(ctx: &egui::Context, state: &EmuState) -> Self {
         Modal::new(ctx, "options_modal").open();
-        let card_options = Vec::new();
+        let card_options: Vec<_> = state.cards().iter().map(|(typ, card)| (*typ, typ.settings_ui(ron::from_str(&card.get_settings()).unwrap()).unwrap())).collect();
         let select_idx = if card_options.is_empty() {
             None
         } else {
@@ -43,6 +43,12 @@ impl OptionWindow {
             select_idx,
         }
     }
+
+    fn sync_settings(&self, state: &mut EmuState) {
+        state.update_options(self.options);
+        let cards = self.card_options.iter().map(|(typ, settings_ui)| (*typ, typ.new_card(ron::from_str(&settings_ui.serialize_settings()).unwrap()).unwrap())).collect();
+        state.set_cards(cards);
+    }
 }
 
 impl Window for OptionWindow {
@@ -75,11 +81,11 @@ impl Window for OptionWindow {
                                     });
                                 let mut delete_idx = None;
                                 frame.show(ui, |ui| {
-                                    for (i, (name, _settings_ui)) in
+                                    for (i, (typ, _settings_ui)) in
                                         self.card_options.iter().enumerate()
                                     {
                                         ui.horizontal(|ui| {
-                                            ui.selectable_value(&mut self.select_idx, Some(i), *name);
+                                            ui.selectable_value(&mut self.select_idx, Some(i), typ.name());
                                             if ui.button("-").clicked() {
                                                 delete_idx = Some(i);
                                             }
@@ -107,7 +113,7 @@ impl Window for OptionWindow {
                                                 .clicked()
                                             {
                                                 self.card_options.push((
-                                                    typ.name(),
+                                                    typ,
                                                     typ.settings_ui(
                                                         ron::from_str(&typ.default_settings())
                                                             .unwrap(),
@@ -131,10 +137,10 @@ impl Window for OptionWindow {
             }
             ui.with_layout(Layout::right_to_left(Align::Min), |ui| {
                 if ui.button("Apply").clicked() {
-                    state.update_options(self.options);
+                    self.sync_settings(state);
                 }
                 if modal.button(ui, "OK").clicked() {
-                    state.update_options(self.options);
+                    self.sync_settings(state);
                 }
                 modal.caution_button(ui, "Cancel");
             });
diff --git a/src/ram.rs b/src/ram.rs
index d988c52..923dd56 100644
--- a/src/ram.rs
+++ b/src/ram.rs
@@ -58,6 +58,13 @@ impl Card for RamCard {
         .unwrap()
     }
 
+    fn get_settings(&self) -> String {
+        ron::to_string(&RamCardSettings {
+            size: self.ram.len() as u16,
+            start_addr: self.start_addr,
+        }).unwrap()
+    }
+
     fn settings_ui(settings: ron::Value) -> anyhow::Result<impl SettingsUi>
     where
         Self: Sized,
diff --git a/src/state.rs b/src/state.rs
index 318dd6c..e6b0919 100644
--- a/src/state.rs
+++ b/src/state.rs
@@ -4,6 +4,7 @@ use rand::RngCore;
 
 use crate::{
     audio::AudioMessage,
+    card::{Card, Type},
     cpu::{MemCycle, Status, I8080},
     frontpanel::{switch::SwitchState, ActionSwitch, FrontpanelInteraction, FrontpanelState},
     Options,
@@ -16,12 +17,21 @@ pub struct EmuState {
     audio_tx: Sender<AudioMessage>,
     options: Options,
     fp_state: FrontpanelState,
+    cards: Vec<(&'static Type, Box<dyn Card>)>,
 }
 
 impl EmuState {
-    pub fn new(audio_tx: Sender<AudioMessage>, options: Options) -> Self {
+    pub fn new(
+        audio_tx: Sender<AudioMessage>,
+        options: Options,
+        cards: Vec<(String, String)>,
+    ) -> Self {
         let mut mem = [0; 65536];
         rand::thread_rng().fill_bytes(&mut mem);
+        let cards = cards.iter().map(|(typ_name, settings)| {
+            let typ = Type::get(&typ_name).unwrap();
+            (typ, typ.new_card(ron::from_str(&settings).unwrap()).unwrap())
+        }).collect();
         let mut slf = Self {
             mem,
             cpu: I8080::new(),
@@ -29,6 +39,7 @@ impl EmuState {
             audio_tx,
             options,
             fp_state: FrontpanelState::default(),
+            cards,
         };
         slf.apply_options();
         slf
@@ -191,4 +202,16 @@ impl EmuState {
     pub fn running(&self) -> bool {
         self.running
     }
+
+    pub fn cards(&self) -> &[(&'static Type, Box<dyn Card>)] {
+        self.cards.as_ref()
+    }
+
+    pub fn set_cards(&mut self, cards: Vec<(&'static Type, Box<dyn Card>)>) {
+        self.cards = cards;
+    }
+
+    pub fn save_cards(&self) -> Vec<(String, String)> {
+        self.cards.iter().map(|(typ, card)| (typ.name().to_string(), card.get_settings())).collect()
+    }
 }