limit max speed to 4x, don't persist speed setting

Mini vMac/AppDelegate.h

@@ -11,21 +11,10 @@
 extern NSString * const MNVMDidInsertDiskNotification;
 extern NSString * const MNVMDidEjectDiskNotification;
 
-typedef enum : NSUInteger {
-    EmulationSpeedMax = -1,
-    EmulationSpeed1x = 0,
-    EmulationSpeed2x,
-    EmulationSpeed4x,
-    EmulationSpeed8x,
-    EmulationSpeed16x,
-    EmulationSpeed32x
-} EmulationSpeed;
-
 @interface AppDelegate : UIResponder <UIApplicationDelegate>
 
 @property (strong, nonatomic) UIWindow *window;
 @property (assign, nonatomic, getter=isEmulatorRunning) BOOL emulatorRunning;
-@property (nonatomic, assign) EmulationSpeed emulationSpeed;
 @property (nonatomic, readonly) NSString *documentsPath;
 @property (nonatomic, readonly) NSArray<NSString*> *diskImageExtensions;
 

Mini vMac/AppDelegate.m

@@ -40,7 +40,12 @@ NSString * const MNVMDidEjectDiskNotification = @"MNVMDidEjectDisk";
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
     sharedAppDelegate = self;
+    [self initDefaults];
+    [self performSelector:@selector(runEmulator) withObject:nil afterDelay:0.1];
+    return YES;
+}
 
+- (void)initDefaults {
     // default settings
     NSString *defaultKeyboardLayout = @"US.nfkeyboardlayout";
     NSLocale *locale = [NSLocale currentLocale];
@@ -49,15 +54,22 @@ NSString * const MNVMDidEjectDiskNotification = @"MNVMDidEjectDisk";
     } else if ([[locale objectForKey:NSLocaleLanguageCode] isEqualToString:@"es"]) {
         defaultKeyboardLayout = @"Spanish.nfkeyboardlayout";
     }
-    NSDictionary *defaults = @{@"speedValue": @(WantInitSpeedValue),
+    NSDictionary *defaultValues = @{@"trackpad": @([UIDevice currentDevice].userInterfaceIdiom != UIUserInterfaceIdiomPad),
-                               @"trackpad": @([UIDevice currentDevice].userInterfaceIdiom != UIUserInterfaceIdiomPad),
                                     @"frameskip": @(0),
                                     @"keyboardLayout": defaultKeyboardLayout
                                     };
-    [[NSUserDefaults standardUserDefaults] registerDefaults:defaults];
+    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    [defaults registerDefaults:defaultValues];
+    [defaults setValue:@(WantInitSpeedValue) forKey:@"speedValue"];
+    [defaults addObserver:self forKeyPath:@"speedValue" options:0 context:NULL];
+}
 
-    [self performSelector:@selector(runEmulator) withObject:nil afterDelay:0.1];
+- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSString *,id> *)change context:(void *)context {
-    return YES;
+    if (object == [NSUserDefaults standardUserDefaults]) {
+        if ([keyPath isEqualToString:@"speedValue"]) {
+            SpeedValue = [[NSUserDefaults standardUserDefaults] integerForKey:@"speedValue"];
+        }
+    }
 }
 
 - (void)applicationDidEnterBackground:(UIApplication *)application {
@@ -181,6 +193,9 @@ NSString * const MNVMDidEjectDiskNotification = @"MNVMDidEjectDisk";
 
 - (void)runEmulator {
     SpeedValue = [[NSUserDefaults standardUserDefaults] integerForKey:@"speedValue"];
+    if (SpeedValue > 3) {
+        SpeedValue = 3;
+    }
     RunEmulator();
 }
 
@@ -192,15 +207,6 @@ NSString * const MNVMDidEjectDiskNotification = @"MNVMDidEjectDisk";
     SetSpeedStopped(emulatorRunning);
 }
 
-- (EmulationSpeed)emulationSpeed {
-    return SpeedValue;
-}
-
-- (void)setEmulationSpeed:(EmulationSpeed)emulationSpeed {
-    SpeedValue = emulationSpeed;
-    [[NSUserDefaults standardUserDefaults] setInteger:emulationSpeed forKey:@"speedValue"];
-}
-
 #pragma mark - Mouse
 
 - (void)setMouseX:(NSInteger)x Y:(NSInteger)y {

Mini vMac/Base.lproj/Main.storyboard

@@ -64,8 +64,6 @@
                                                 <segment title="2x"/>
                                                 <segment title="4x"/>
                                                 <segment title="8x"/>
-                                                <segment title="16x"/>
-                                                <segment title="Max"/>
                                             </segments>
                                             <connections>
                                                 <action selector="changeSpeed:" destination="WUA-f8-k8g" eventType="valueChanged" id="FDr-uw-7bN"/>

Mini vMac/SettingsViewController.m

@@ -33,14 +33,7 @@
 
 - (IBAction)changeSpeed:(UISegmentedControl*)sender {
     if ([sender isKindOfClass:[UISegmentedControl class]]) {
-        EmulationSpeed speedValues[] = {
+        [[NSUserDefaults standardUserDefaults] setInteger:sender.selectedSegmentIndex forKey:@"speedValue"];
-            EmulationSpeed1x,
-            EmulationSpeed2x,
-            EmulationSpeed4x,
-            EmulationSpeed8x,
-            EmulationSpeed16x,
-            EmulationSpeedMax};
-        [AppDelegate sharedInstance].emulationSpeed = speedValues[sender.selectedSegmentIndex];
     }
 }
 
@@ -81,8 +74,7 @@
     if (section == 0) {
         cell = [tableView dequeueReusableCellWithIdentifier:@"speed" forIndexPath:indexPath];
         UISegmentedControl *speedControl = (UISegmentedControl*)[cell viewWithTag:128];
-        EmulationSpeed speed = [AppDelegate sharedInstance].emulationSpeed;
+        speedControl.selectedSegmentIndex = [defaults integerForKey:@"speedValue"];
-        speedControl.selectedSegmentIndex = speed == EmulationSpeedMax ? 5 : speed;
     } else if (section == 1) {
         cell = [tableView dequeueReusableCellWithIdentifier:@"mouse" forIndexPath:indexPath];
         UISegmentedControl *mouseControl = (UISegmentedControl*)[cell viewWithTag:128];