initial commit

.editorconfig

@@ -0,0 +1,8 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = space
+indent_size = 2

.gitignore

@@ -0,0 +1,46 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Web related
+lib/generated_plugin_registrant.dart
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

.metadata

@@ -0,0 +1,30 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: "b0850beeb25f6d5b10426284f506557f66181b36"
+  channel: "stable"
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: b0850beeb25f6d5b10426284f506557f66181b36
+      base_revision: b0850beeb25f6d5b10426284f506557f66181b36
+    - platform: ios
+      create_revision: b0850beeb25f6d5b10426284f506557f66181b36
+      base_revision: b0850beeb25f6d5b10426284f506557f66181b36
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

README.md

@@ -0,0 +1,7 @@
+# dartboy
+
+Gameboy Emulator written purely in Dart.
+
+<img src="./docs/assets/img/screenshot1.png" width="33%" align="right">
+
+<img src="./docs/assets/img/screenshot2.png" width="33%" align="right">

analysis_options.yaml

@@ -0,0 +1,29 @@
+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
+#
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
+
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  # The lint rules applied to this project can be customized in the
+  # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+  # included above or to enable additional rules. A list of all available lints
+  # and their documentation is published at
+  # https://dart-lang.github.io/linter/lints/index.html.
+  #
+  # Instead of disabling a lint rule for the entire project in the
+  # section below, it can also be suppressed for a single line of code
+  # or a specific dart file by using the `// ignore: name_of_lint` and
+  # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+  # producing the lint.
+  rules:
+    # avoid_print: false  # Uncomment to disable the `avoid_print` rule
+    # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

android/.gitignore

@@ -0,0 +1,13 @@
+gradle-wrapper.jar
+/.gradle
+/captures/
+/gradlew
+/gradlew.bat
+/local.properties
+GeneratedPluginRegistrant.java
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
+key.properties
+**/*.keystore
+**/*.jks

android/app/build.gradle

@@ -0,0 +1,58 @@
+plugins {
+    id "com.android.application"
+    id "kotlin-android"
+    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
+    id "dev.flutter.flutter-gradle-plugin"
+}
+
+def localProperties = new Properties()
+def localPropertiesFile = rootProject.file("local.properties")
+if (localPropertiesFile.exists()) {
+    localPropertiesFile.withReader("UTF-8") { reader ->
+        localProperties.load(reader)
+    }
+}
+
+def flutterVersionCode = localProperties.getProperty("flutter.versionCode")
+if (flutterVersionCode == null) {
+    flutterVersionCode = "1"
+}
+
+def flutterVersionName = localProperties.getProperty("flutter.versionName")
+if (flutterVersionName == null) {
+    flutterVersionName = "1.0"
+}
+
+android {
+    namespace = "com.example.dartboy"
+    compileSdk = flutter.compileSdkVersion
+    ndkVersion = flutter.ndkVersion
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId = "com.example.dartboy"
+        // You can update the following values to match your application needs.
+        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
+        minSdk = flutter.minSdkVersion
+        targetSdk = flutter.targetSdkVersion
+        versionCode = flutterVersionCode.toInteger()
+        versionName = flutterVersionName
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig = signingConfigs.debug
+        }
+    }
+}
+
+flutter {
+    source = "../.."
+}

android/app/src/debug/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,45 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <application
+        android:label="dartboy"
+        android:name="${applicationName}"
+        android:icon="@mipmap/ic_launcher">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:launchMode="singleTop"
+            android:taskAffinity=""
+            android:theme="@style/LaunchTheme"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:hardwareAccelerated="true"
+            android:windowSoftInputMode="adjustResize">
+            <!-- Specifies an Android theme to apply to this Activity as soon as
+                 the Android process has started. This theme is visible to the user
+                 while the Flutter UI initializes. After that, this theme continues
+                 to determine the Window background behind the Flutter UI. -->
+            <meta-data
+                android:name="io.flutter.embedding.android.NormalTheme"
+                android:resource="@style/NormalTheme"
+            />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <!-- Don't delete the meta-data below.
+             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
+    </application>
+    <!-- Required to query activities that can process text, see:
+         https://developer.android.com/training/package-visibility and
+         https://developer.android.com/reference/android/content/Intent#ACTION_PROCESS_TEXT.
+
+         In particular, this is used by the Flutter engine in io.flutter.plugin.text.ProcessTextPlugin. -->
+    <queries>
+        <intent>
+            <action android:name="android.intent.action.PROCESS_TEXT" />
+            <data android:mimeType="text/plain" />
+        </intent>
+    </queries>
+</manifest>

android/app/src/main/kotlin/com/example/dashboy/MainActivity.kt

@@ -0,0 +1,5 @@
+package com.example.dartboy
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity: FlutterActivity()

android/app/src/main/res/drawable-v21/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="?android:colorBackground" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

android/app/src/main/res/drawable/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@android:color/white" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

android/app/src/main/res/values-night/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

android/app/src/main/res/values/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

android/app/src/profile/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

android/build.gradle

@@ -0,0 +1,18 @@
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.buildDir = "../build"
+subprojects {
+    project.buildDir = "${rootProject.buildDir}/${project.name}"
+}
+subprojects {
+    project.evaluationDependsOn(":app")
+}
+
+tasks.register("clean", Delete) {
+    delete rootProject.buildDir
+}

android/gradle.properties

@@ -0,0 +1,3 @@
+org.gradle.jvmargs=-Xmx4G -XX:+HeapDumpOnOutOfMemoryError
+android.useAndroidX=true
+android.enableJetifier=true

android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.3-all.zip

android/settings.gradle

@@ -0,0 +1,25 @@
+pluginManagement {
+    def flutterSdkPath = {
+        def properties = new Properties()
+        file("local.properties").withInputStream { properties.load(it) }
+        def flutterSdkPath = properties.getProperty("flutter.sdk")
+        assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
+        return flutterSdkPath
+    }()
+
+    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
+
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+plugins {
+    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
+    id "com.android.application" version "7.3.0" apply false
+    id "org.jetbrains.kotlin.android" version "1.7.10" apply false
+}
+
+include ":app"

ios/.gitignore

@@ -0,0 +1,34 @@
+**/dgph
+*.mode1v3
+*.mode2v3
+*.moved-aside
+*.pbxuser
+*.perspectivev3
+**/*sync/
+.sconsign.dblite
+.tags*
+**/.vagrant/
+**/DerivedData/
+Icon?
+**/Pods/
+**/.symlinks/
+profile
+xcuserdata
+**/.generated/
+Flutter/App.framework
+Flutter/Flutter.framework
+Flutter/Flutter.podspec
+Flutter/Generated.xcconfig
+Flutter/ephemeral/
+Flutter/app.flx
+Flutter/app.zip
+Flutter/flutter_assets/
+Flutter/flutter_export_environment.sh
+ServiceDefinitions.json
+Runner/GeneratedPluginRegistrant.*
+
+# Exceptions to above rules.
+!default.mode1v3
+!default.mode2v3
+!default.pbxuser
+!default.perspectivev3

ios/Flutter/AppFrameworkInfo.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>App</string>
+  <key>CFBundleIdentifier</key>
+  <string>io.flutter.flutter.app</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>App</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>1.0</string>
+  <key>MinimumOSVersion</key>
+  <string>12.0</string>
+</dict>
+</plist>

ios/Flutter/Debug.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
+#include "Generated.xcconfig"

ios/Flutter/Release.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
+#include "Generated.xcconfig"

ios/Podfile

@@ -0,0 +1,44 @@
+# Uncomment this line to define a global platform for your project
+# platform :ios, '12.0'
+
+# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
+ENV['COCOAPODS_DISABLE_STATS'] = 'true'
+
+project 'Runner', {
+  'Debug' => :debug,
+  'Profile' => :release,
+  'Release' => :release,
+}
+
+def flutter_root
+  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
+  unless File.exist?(generated_xcode_build_settings_path)
+    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
+  end
+
+  File.foreach(generated_xcode_build_settings_path) do |line|
+    matches = line.match(/FLUTTER_ROOT\=(.*)/)
+    return matches[1].strip if matches
+  end
+  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
+end
+
+require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
+
+flutter_ios_podfile_setup
+
+target 'Runner' do
+  use_frameworks!
+  use_modular_headers!
+
+  flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
+  target 'RunnerTests' do
+    inherit! :search_paths
+  end
+end
+
+post_install do |installer|
+  installer.pods_project.targets.each do |target|
+    flutter_additional_ios_build_settings(target)
+  end
+end

ios/Runner.xcodeproj/project.pbxproj

@@ -0,0 +1,619 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 54;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
+		331C808B294A63AB00263BE5 /* RunnerTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 331C807B294A618700263BE5 /* RunnerTests.swift */; };
+		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
+		74858FAF1ED2DC5600515810 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 74858FAE1ED2DC5600515810 /* AppDelegate.swift */; };
+		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
+		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
+		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXContainerItemProxy section */
+		331C8085294A63A400263BE5 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 97C146E61CF9000F007C117D /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 97C146ED1CF9000F007C117D;
+			remoteInfo = Runner;
+		};
+/* End PBXContainerItemProxy section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		9705A1C41CF9048500538489 /* Embed Frameworks */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 10;
+			files = (
+			);
+			name = "Embed Frameworks";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
+		1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GeneratedPluginRegistrant.h; sourceTree = "<group>"; };
+		1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GeneratedPluginRegistrant.m; sourceTree = "<group>"; };
+		331C807B294A618700263BE5 /* RunnerTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RunnerTests.swift; sourceTree = "<group>"; };
+		331C8081294A63A400263BE5 /* RunnerTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = RunnerTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
+		3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = AppFrameworkInfo.plist; path = Flutter/AppFrameworkInfo.plist; sourceTree = "<group>"; };
+		74858FAD1ED2DC5600515810 /* Runner-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "Runner-Bridging-Header.h"; sourceTree = "<group>"; };
+		74858FAE1ED2DC5600515810 /* AppDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
+		7AFA3C8E1D35360C0083082E /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = Release.xcconfig; path = Flutter/Release.xcconfig; sourceTree = "<group>"; };
+		9740EEB21CF90195004384FC /* Debug.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Debug.xcconfig; path = Flutter/Debug.xcconfig; sourceTree = "<group>"; };
+		9740EEB31CF90195004384FC /* Generated.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Generated.xcconfig; path = Flutter/Generated.xcconfig; sourceTree = "<group>"; };
+		97C146EE1CF9000F007C117D /* Runner.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Runner.app; sourceTree = BUILT_PRODUCTS_DIR; };
+		97C146FB1CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/Main.storyboard; sourceTree = "<group>"; };
+		97C146FD1CF9000F007C117D /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
+		97C147001CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
+		97C147021CF9000F007C117D /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+		97C146EB1CF9000F007C117D /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		331C8082294A63A400263BE5 /* RunnerTests */ = {
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+/* Begin XCConfigurationList section */
+		331C8087294A63A400263BE5 /* Build configuration list for PBXNativeTarget "RunnerTests" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				331C8088294A63A400263BE5 /* Debug */,
+				331C8089294A63A400263BE5 /* Release */,
+				331C808A294A63A400263BE5 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		97C146E91CF9000F007C117D /* Build configuration list for PBXProject "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147031CF9000F007C117D /* Debug */,
+				97C147041CF9000F007C117D /* Release */,
+				249021D3217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147061CF9000F007C117D /* Debug */,
+				97C147071CF9000F007C117D /* Release */,
+				249021D4217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 97C146E61CF9000F007C117D /* Project object */;
+}

ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>

ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -0,0 +1,98 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1510"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+               BuildableName = "Runner.app"
+               BlueprintName = "Runner"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <Testables>
+         <TestableReference
+            skipped = "NO"
+            parallelizable = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "331C8080294A63A400263BE5"
+               BuildableName = "RunnerTests.xctest"
+               BlueprintName = "RunnerTests"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Profile"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

ios/Runner.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+</Workspace>

ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

ios/Runner/AppDelegate.swift

@@ -0,0 +1,13 @@
+import Flutter
+import UIKit
+
+@UIApplicationMain
+@objc class AppDelegate: FlutterAppDelegate {
+  override func application(
+    _ application: UIApplication,
+    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
+  ) -> Bool {
+    GeneratedPluginRegistrant.register(with: self)
+    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
+  }
+}

ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,122 @@
+{
+  "images" : [
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "83.5x83.5",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-83.5x83.5@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "1024x1024",
+      "idiom" : "ios-marketing",
+      "filename" : "Icon-App-1024x1024@1x.png",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md

@@ -0,0 +1,5 @@
+# Launch Screen Assets
+
+You can customize the launch screen with your own desired assets by replacing the image files in this directory.
+
+You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images.

ios/Runner/Base.lproj/LaunchScreen.storyboard

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Ydg-fD-yQy"/>
+                        <viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
+                            </imageView>
+                        </subviews>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <constraints>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
+                        </constraints>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+    <resources>
+        <image name="LaunchImage" width="168" height="185"/>
+    </resources>
+</document>

ios/Runner/Base.lproj/Main.storyboard

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
+    </dependencies>
+    <scenes>
+        <!--Flutter View Controller-->
+        <scene sceneID="tne-QT-ifu">
+            <objects>
+                <viewController id="BYZ-38-t0r" customClass="FlutterViewController" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
+                        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+            </objects>
+        </scene>
+    </scenes>
+</document>

ios/Runner/Info.plist

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+	<dict>
+		<key>CFBundleDevelopmentRegion</key>
+		<string>$(DEVELOPMENT_LANGUAGE)</string>
+		<key>CFBundleDisplayName</key>
+		<string>Dartboy</string>
+		<key>CFBundleExecutable</key>
+		<string>$(EXECUTABLE_NAME)</string>
+		<key>CFBundleIdentifier</key>
+		<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+		<key>CFBundleInfoDictionaryVersion</key>
+		<string>6.0</string>
+		<key>CFBundleName</key>
+		<string>dartboy</string>
+		<key>CFBundlePackageType</key>
+		<string>APPL</string>
+		<key>CFBundleShortVersionString</key>
+		<string>$(FLUTTER_BUILD_NAME)</string>
+		<key>CFBundleSignature</key>
+		<string>????</string>
+		<key>CFBundleVersion</key>
+		<string>$(FLUTTER_BUILD_NUMBER)</string>
+		<key>LSRequiresIPhoneOS</key>
+		<true />
+		<key>UILaunchStoryboardName</key>
+		<string>LaunchScreen</string>
+		<key>UIMainStoryboardFile</key>
+		<string>Main</string>
+		<key>UISupportedInterfaceOrientations</key>
+		<array>
+			<string>UIInterfaceOrientationPortrait</string>
+			<string>UIInterfaceOrientationLandscapeLeft</string>
+			<string>UIInterfaceOrientationLandscapeRight</string>
+		</array>
+		<key>UISupportedInterfaceOrientations~ipad</key>
+		<array>
+			<string>UIInterfaceOrientationPortrait</string>
+			<string>UIInterfaceOrientationPortraitUpsideDown</string>
+			<string>UIInterfaceOrientationLandscapeLeft</string>
+			<string>UIInterfaceOrientationLandscapeRight</string>
+		</array>
+		<key>CADisableMinimumFrameDurationOnPhone</key>
+		<true />
+		<key>UIApplicationSupportsIndirectInputEvents</key>
+		<true />
+	</dict>
+</plist>

ios/Runner/Runner-Bridging-Header.h

@@ -0,0 +1 @@
+#import "GeneratedPluginRegistrant.h"

ios/RunnerTests/RunnerTests.swift

@@ -0,0 +1,12 @@
+import Flutter
+import UIKit
+import XCTest
+
+class RunnerTests: XCTestCase {
+
+  func testExample() {
+    // If you add code to the Runner application, consider adding tests here.
+    // See https://developer.apple.com/documentation/xctest for more information about using XCTest.
+  }
+
+}

lib/emulator/bus.dart

@@ -0,0 +1,248 @@
+import 'package:dartboy/emulator/joypad.dart';
+import 'package:dartboy/emulator/mbc.dart';
+import 'package:dartboy/emulator/ppu.dart';
+import 'package:dartboy/emulator/timer.dart';
+import 'package:dartboy/emulator/utils.dart';
+
+class Ie extends BitFieldU8 {
+  Ie() : super({});
+
+  Ie.fromU8(int u8) : super.fromU8(u8);
+
+  Bit get vBlank => value(0);
+  Bit get lcdStat => value(1);
+  Bit get timer => value(2);
+  Bit get serial => value(3);
+  Bit get joypad => value(4);
+}
+
+class Bus {
+  Bus(this.ppu, this.mbc);
+
+  Ppu ppu = Ppu();
+  Joypad joypad = Joypad();
+  Timer timer = Timer();
+
+  List<int> ram = List.filled(0x8000, 0);
+  List<int> hram = List.filled(0x0080, 0);
+  Mbc mbc;
+
+  Ie ie = Ie();
+
+  bool _prevSerial = false;
+  bool _intSerial = false;
+
+  void tick() {
+    ppu.tick();
+    timer.tick();
+  }
+
+  bool get irqVBlank => ppu.intVBlank;
+  set irqVBlank(bool val) {
+    ppu.intVBlank = val;
+  }
+
+  bool get irqLcdStat => ppu.intLcdStat;
+  set irqLcdStat(bool val) {
+    ppu.intLcdStat = val;
+  }
+
+  bool get irqTimer => timer.interrupt;
+  set irqTimer(bool val) {
+    timer.interrupt = val;
+  }
+
+  bool get irqSerial => _intSerial;
+  set irqSerial(bool val) {
+    _intSerial = val;
+  }
+
+  bool get irqJoypad => joypad.interrupt;
+  set irqJoypad(bool val) {
+    joypad.interrupt = val;
+  }
+
+  int read(int addr) {
+    if (0x0000 <= addr && addr <= 0x7FFF) return mbc.read(addr);
+    if (0x8000 <= addr && addr <= 0x9FFF) return ppu.read(addr);
+    if (0xA000 <= addr && addr <= 0xBFFF) return mbc.read(addr);
+    if (0xC000 <= addr && addr <= 0xDFFF) return ram[addr - 0xC000];
+    if (0xE000 <= addr && addr <= 0xFDFF) return ram[addr - 0xE000];
+    if (0xFE00 <= addr && addr <= 0xFE9F) return ppu.readOam(addr);
+    if (0xFEA0 <= addr && addr <= 0xFEFF) return 0;
+    if (0xFF00 == addr) return joypad.read();
+    if (0xFF01 == addr) return readSerial();
+    if (0xFF02 == addr) return readSerialCtrl();
+    if (0xFF04 == addr) return timer.readDiv();
+    if (0xFF05 == addr) return timer.readTima();
+    if (0xFF06 == addr) return timer.readTma();
+    if (0xFF07 == addr) return timer.readTac();
+    if (0xFF0F == addr) return readIrq();
+    if (0xFF40 == addr) return ppu.readLcdControl();
+    if (0xFF41 == addr) return ppu.readLcdStatus();
+    if (0xFF42 == addr) return ppu.readScrollY();
+    if (0xFF43 == addr) return ppu.readScrollX();
+    if (0xFF44 == addr) return ppu.readLines();
+    if (0xFF45 == addr) return ppu.readLineCompare();
+    if (0xFF47 == addr) return ppu.readBgPalette();
+    if (0xFF48 == addr) return ppu.readObjectPalette0();
+    if (0xFF49 == addr) return ppu.readObjectPalette1();
+    if (0xFF4A == addr) return ppu.readWindowY();
+    if (0xFF4B == addr) return ppu.readWindowX();
+    if (0xFF80 <= addr && addr <= 0xFFFE) return hram[addr - 0xFF80];
+    if (0xFFFF == addr) return ie.toU8();
+
+    return 0;
+  }
+
+  int readWord(int addr) {
+    final low = read(addr);
+    final high = read(addr + 1);
+
+    return ((high) << 8) | low;
+  }
+
+  int readIrq() {
+    return bitpack([
+      false,
+      false,
+      false,
+      joypad.interrupt,
+      _intSerial,
+      timer.interrupt,
+      ppu.intLcdStat,
+      ppu.intVBlank
+    ]);
+  }
+
+  int readSerial() {
+    return 0;
+  }
+
+  int readSerialCtrl() {
+    return 0;
+  }
+
+  void write(int addr, int val) {
+    if (0x0000 <= addr && addr <= 0x7FFF) {
+      mbc.write(addr, val);
+    }
+    if (0x8000 <= addr && addr <= 0x9FFF) {
+      ppu.write(addr, val);
+    }
+    if (0xA000 <= addr && addr <= 0xBFFF) {
+      mbc.write(addr, val);
+    }
+    if (0xC000 <= addr && addr <= 0xDFFF) {
+      ram[addr - 0xC000] = val;
+    }
+    if (0xE000 <= addr && addr <= 0xFDFF) {
+      ram[addr - 0xE000] = val;
+    }
+    if (0xFE00 <= addr && addr <= 0xFE9F) {
+      ppu.writeOam(addr, val);
+    }
+    if (0xFEA0 <= addr && addr <= 0xFEFF) {
+      return;
+    }
+    if (0xFF00 == addr) {
+      joypad.write(val);
+    }
+    if (0xFF01 == addr) {
+      writeSerial(val);
+    }
+    if (0xFF02 == addr) {
+      writeSerialCtrl(val);
+    }
+    if (0xFF04 == addr) {
+      timer.writeDiv(val);
+    }
+    if (0xFF05 == addr) {
+      timer.writeTima(val);
+    }
+    if (0xFF06 == addr) {
+      timer.writeTma(val);
+    }
+    if (0xFF07 == addr) {
+      timer.writeTac(val);
+    }
+    if (0xFF0F == addr) {
+      writeIrq(val);
+    }
+    if (0xFF40 == addr) {
+      ppu.writeLcdControl(val);
+    }
+    if (0xFF41 == addr) {
+      ppu.writeLcdStatus(val);
+    }
+    if (0xFF42 == addr) {
+      ppu.writeScrollY(val);
+    }
+    if (0xFF43 == addr) {
+      ppu.writeScrollX(val);
+    }
+    if (0xFF45 == addr) {
+      ppu.writeLineCompare(val);
+    }
+    if (0xFF46 == addr) {
+      writeDma(val);
+    }
+    if (0xFF47 == addr) {
+      ppu.writeBgPalette(val);
+    }
+    if (0xFF48 == addr) {
+      ppu.writeObjectPalette0(val);
+    }
+    if (0xFF49 == addr) {
+      ppu.writeObjectPalette1(val);
+    }
+    if (0xFF4A == addr) {
+      ppu.writeWindowY(val);
+    }
+    if (0xFF4B == addr) {
+      ppu.writeWindowX(val);
+    }
+    if (0xFF80 <= addr && addr <= 0xFFFE) {
+      hram[addr - 0xFF80] = val;
+    }
+    if (0xFFFF == addr) {
+      ie = Ie.fromU8(val);
+    }
+  }
+
+  void writeWord(int addr, int val) {
+    final low = val.toU8();
+    final high = (val >> 8).toU8();
+
+    write(addr, low);
+    write(addr + 1, high);
+  }
+
+  void writeIrq(int val) {
+    ppu.intVBlank = isSet(val, 0);
+    ppu.intLcdStat = isSet(val, 1);
+    timer.interrupt = isSet(val, 2);
+    _intSerial = isSet(val, 3);
+    joypad.interrupt = isSet(val, 4);
+  }
+
+  void writeSerial(int val) {}
+
+  void writeSerialCtrl(int val) {
+    final cur = isSet(val, 7);
+
+    if (_prevSerial && !cur) {
+      _intSerial = true;
+    }
+
+    _prevSerial = cur;
+  }
+
+  void writeDma(int val) {
+    final baseAddr = (val << 8).toU16();
+
+    for (var i = 0; i < 0x100; i++) {
+      write(0xFE00 + i, read(baseAddr + i));
+    }
+  }
+}

lib/emulator/gameboy.dart

@@ -0,0 +1,46 @@
+import 'dart:typed_data';
+
+import 'package:dartboy/emulator/bus.dart';
+import 'package:dartboy/emulator/cpu.dart';
+import 'package:dartboy/emulator/joypad.dart';
+import 'package:dartboy/emulator/mbc.dart';
+import 'package:dartboy/emulator/ppu.dart';
+import 'package:dartboy/emulator/rom.dart';
+
+class GameBoy {
+  GameBoy();
+
+  late Cpu cpu;
+  bool ready = false;
+
+  void load(Rom rom) {
+    final mbc = Mbc.fromRom(rom);
+    final ppu = Ppu();
+    final bus = Bus(ppu, mbc);
+
+    cpu = Cpu(bus: bus);
+  }
+
+  void reset() {
+    cpu.reset();
+
+    ready = true;
+  }
+
+  void press(JoypadKey key) {
+    cpu.bus.joypad.press(key);
+  }
+
+  void release(JoypadKey key) {
+    cpu.bus.joypad.release(key);
+  }
+
+  void tick() {
+    cpu.tick();
+    cpu.bus.tick();
+  }
+
+  Uint8List render() {
+    return cpu.bus.ppu.render();
+  }
+}

lib/emulator/joypad.dart

@@ -0,0 +1,117 @@
+import 'package:dartboy/emulator/utils.dart';
+
+enum JoypadKey {
+  a,
+  b,
+  up,
+  down,
+  left,
+  right,
+  select,
+  start,
+}
+
+class Joypad {
+  Joypad();
+
+  bool _up = false;
+  bool _down = false;
+  bool _left = false;
+  bool _right = false;
+  bool _a = false;
+  bool _b = false;
+  bool _start = false;
+  bool _select = false;
+
+  bool _direction = false;
+  bool _button = false;
+
+  bool interrupt = false;
+
+  void press(JoypadKey key) {
+    switch (key) {
+      case JoypadKey.a:
+        _a = true;
+        break;
+      case JoypadKey.b:
+        _b = true;
+        break;
+      case JoypadKey.select:
+        _select = true;
+        break;
+      case JoypadKey.start:
+        _start = true;
+        break;
+      case JoypadKey.up:
+        _up = true;
+        break;
+      case JoypadKey.down:
+        _down = true;
+        break;
+      case JoypadKey.right:
+        _right = true;
+        break;
+      case JoypadKey.left:
+        _left = true;
+        break;
+    }
+
+    interrupt = true;
+  }
+
+  void release(JoypadKey key) {
+    switch (key) {
+      case JoypadKey.a:
+        _a = false;
+        break;
+      case JoypadKey.b:
+        _b = false;
+        break;
+      case JoypadKey.select:
+        _select = false;
+        break;
+      case JoypadKey.start:
+        _start = false;
+        break;
+      case JoypadKey.up:
+        _up = false;
+        break;
+      case JoypadKey.down:
+        _down = false;
+        break;
+      case JoypadKey.right:
+        _right = false;
+        break;
+      case JoypadKey.left:
+        _left = false;
+        break;
+    }
+  }
+
+  int readButton() {
+    return bitpack(
+        [true, true, false, !_direction, !_start, !_select, !_b, !_a]);
+  }
+
+  int readDirection() {
+    return bitpack(
+        [true, true, !_button, false, !_down, !_up, !_left, !_right]);
+  }
+
+  int read() {
+    if (_direction) {
+      return readDirection();
+    }
+
+    if (_button) {
+      return readButton();
+    }
+
+    return 0xFF;
+  }
+
+  void write(int val) {
+    _direction = !isSet(val, 4);
+    _button = !isSet(val, 5);
+  }
+}

lib/emulator/mbc.dart

@@ -0,0 +1,149 @@
+import 'dart:math';
+
+import 'package:dartboy/emulator/rom.dart';
+
+abstract class Mbc {
+  int read(int addr);
+  void write(int addr, int val);
+
+  factory Mbc.fromRom(Rom rom) {
+    switch (rom.mbcType) {
+      case MbcType.romOnly:
+        return RomOnly(rom);
+      case MbcType.mbc1:
+      case MbcType.mbc1Ram:
+      case MbcType.mbc1RamBattery:
+        return Mbc1(rom);
+
+      default:
+        throw ArgumentError.value(rom.mbcType);
+    }
+  }
+}
+
+class RomOnly implements Mbc {
+  RomOnly(this._rom);
+
+  final Rom _rom;
+  final List<int> _ram = List.filled(8 * 1024, 0, growable: false);
+
+  @override
+  int read(int addr) {
+    if (addr >= 0xA000) {
+      return _ram[addr - 0xA000];
+    }
+
+    return _rom.data[addr];
+  }
+
+  @override
+  void write(int addr, int val) {
+    if (addr >= 0xA000) {
+      _ram[addr - 0xA000] = val;
+    }
+
+    return;
+  }
+}
+
+enum Mbc1SelectMode {
+  rom,
+  ram,
+}
+
+class Mbc1 implements Mbc {
+  Mbc1(this._rom);
+
+  final Rom _rom;
+  final List<int> _ram = List.filled(32 * 1024, 0, growable: false);
+  int _romBank = 1;
+  int _ramBank = 0;
+
+  bool _enableRam = true;
+  Mbc1SelectMode _selectMode = Mbc1SelectMode.rom;
+
+  int _readRomFromBank(int addr) {
+    final baseAddr = _romBank * 16 * 1024;
+    final indexAddr = addr - 0x4000;
+    return _rom.data[baseAddr + indexAddr];
+  }
+
+  int _readRamFromBank(int addr) {
+    if (!_enableRam) {
+      print("disabled ram read");
+      return 0;
+    }
+
+    final baseAddr = _ramBank * 8 * 1024;
+    final indexAddr = addr - 0xA000;
+    return _ram[baseAddr + indexAddr];
+  }
+
+  void _writeRamIntoBank(int addr, int val) {
+    if (!_enableRam) {
+      print("disabled ram write");
+      return;
+    }
+
+    final baseAddr = _ramBank * 8 * 1024;
+    final indexAddr = addr - 0xA000;
+
+    _ram[baseAddr + indexAddr] = val;
+  }
+
+  @override
+  int read(int addr) {
+    if (0x0000 <= addr && addr <= 0x3FFF) return _rom.data[addr];
+    if (0x4000 <= addr && addr <= 0x7FFF) return _readRomFromBank(addr);
+    if (0xA000 <= addr && addr <= 0xBFFF) return _readRamFromBank(addr);
+
+    return 0;
+  }
+
+  @override
+  void write(int addr, int val) {
+    if (0x0000 <= addr && addr <= 0x1FFF) {
+      if ((val & 0x0F) == 0x0A) {
+        _enableRam = true;
+      } else {
+        _enableRam = false;
+      }
+      return;
+    }
+
+    if (0x2000 <= addr && addr <= 0x3FFF) {
+      final bank = val & 0x1F;
+
+      _romBank = max(bank, 1);
+      return;
+    }
+
+    if (0x4000 <= addr && addr <= 0x5FFF) {
+      switch (_selectMode) {
+        case Mbc1SelectMode.rom:
+          final bankHigh = val & 0x03;
+
+          _romBank |= bankHigh << 5;
+          break;
+
+        case Mbc1SelectMode.ram:
+          final bank = val & 0x03;
+
+          _ramBank = bank;
+          break;
+      }
+      return;
+    }
+
+    if (0x6000 <= addr && addr <= 0x7FFF) {
+      if (val == 0x01) {
+        _selectMode = Mbc1SelectMode.ram;
+      } else {
+        _selectMode = Mbc1SelectMode.rom;
+      }
+      return;
+    }
+
+    _writeRamIntoBank(addr, val);
+  }
+}

lib/emulator/ppu.dart

@@ -0,0 +1,566 @@
+import 'dart:typed_data';
+
+import 'package:dartboy/emulator/utils.dart';
+
+const _width = 256;
+const _height = 256;
+
+class _LcdControl extends BitFieldU8 {
+  _LcdControl() : super({});
+
+  _LcdControl.fromU8(int u8) : super.fromU8(u8);
+
+  Bit get bgWinEnable => value(0);
+  Bit get spriteEnable => value(1);
+  Bit get spriteSize => value(2);
+  Bit get bgTileMapSelect => value(3);
+  Bit get tileDataSelect => value(4);
+  Bit get windowDisplayEnable => value(5);
+  Bit get windowTileMapSelect => value(6);
+  Bit get lcdDisplayEnable => value(7);
+}
+
+class _LcdStatus extends BitFieldU8 {
+  _LcdStatus() : super({});
+
+  _LcdStatus.fromU8(int u8) : super.fromU8(u8);
+
+  Bit get ppuMode0 => value(0);
+  Bit get ppuMode1 => value(1);
+  Bit get coincidenceFlag => value(2);
+  Bit get mode0StatIntEnable => value(3);
+  Bit get mode1StatIntEnable => value(4);
+  Bit get mode2StatIntEnable => value(5);
+  Bit get lycLyStatIntEnable => value(6);
+}
+
+class _SpriteFlags extends BitFieldU8 {
+  _SpriteFlags() : super({});
+
+  _SpriteFlags.fromU8(int u8) : super.fromU8(u8);
+
+  Bit get paletteNum => value(4);
+  Bit get xFlip => value(5);
+  Bit get yFlip => value(6);
+  Bit get priority => value(7);
+}
+
+class _Palette {
+  _Palette(this.values);
+
+  List<int> values;
+
+  _Palette.fromU8(int u8)
+      : values = List.generate(4, (i) => (u8 >> (2 * i)) & 3);
+
+  int toU8() => values.fold(0, (acc, col) => (acc << 2) | col);
+}
+
+class _Oam {
+  int yPos = 0;
+  int xPos = 0;
+  int tileNum = 0;
+  _SpriteFlags spriteFlag = _SpriteFlags();
+}
+
+enum _Mode {
+  hBlank,
+  vBlank,
+  oamScan,
+  drawing,
+}
+
+class _OamColor {
+  _OamColor({
+    this.index = 0,
+    this.color = 0,
+    this.blend = false,
+  });
+
+  final int index;
+  final int color;
+  final bool blend;
+
+  static List<_OamColor> fromColorIndexes(
+      List<int> indexes, bool blend, _Palette palette) {
+    return List.generate(8, (i) {
+      final index = indexes[i];
+      return _OamColor(
+        index: index,
+        blend: blend,
+        color: palette.values[index],
+      );
+    });
+  }
+}
+
+class Ppu {
+  Ppu();
+
+  final List<int> _vram = List.filled(8 * 1024, 0);
+
+  _Mode _mode = _Mode.oamScan;
+  _Mode _prevMode = _Mode.vBlank;
+
+  _LcdControl _lcdControl = _LcdControl();
+  _LcdStatus _lcdStatus = _LcdStatus();
+  int _windowX = 0;
+  int _windowY = 0;
+  int _scrollX = 0;
+  int _scrollY = 0;
+
+  int _cycles = 0;
+  int _lines = 0;
+
+  int _linesCompare = 0;
+
+  _Palette _bgPalette = _Palette.fromU8(0x00);
+  _Palette _objectPalette0 = _Palette.fromU8(0x00);
+  _Palette _objectPalette1 = _Palette.fromU8(0x00);
+
+  bool intVBlank = false;
+  bool intLcdStat = false;
+
+  int _x = 0;
+  int _y = 0;
+
+  final List<_Oam> _oam = List.generate(0xA0, (_) => _Oam());
+  final List<_Oam> _buffer = [];
+
+  List<int> _bgLine = List.filled(_width, 0);
+  List<_OamColor> _oamLine = List.generate(_width, (_) => _OamColor());
+  List<int> _curBg = List.filled(8, 0);
+  bool _drawingWindow = false;
+
+  Uint8List pixels = Uint8List(4 * _width * _height);
+
+  static const _colorToPixel = [
+    [0xEF, 0xFD, 0xB4, 0xFF],
+    [0x8C, 0xAE, 0x04, 0xFF],
+    [0x65, 0x7F, 0x05, 0xFF],
+    [0x14, 0x19, 0x01, 0xFF],
+  ];
+
+  List<int> _tileToIndexes(int tileNum, int row, bool signed) {
+    var baseAddr = 0x0000;
+    if (signed) {
+      baseAddr = 0x9000 - 0x8000;
+    }
+
+    var indexAddr = row * 2 + tileNum * 16;
+    if (signed) {
+      indexAddr = row * 2 + tileNum.toI8() * 16;
+    }
+
+    final addr = baseAddr.wrappingAddU16(indexAddr);
+
+    var bit = _vram[addr];
+    var color = _vram[addr + 1];
+
+    List<int> indexes = List.filled(8, 0);
+
+    for (var i = 7; i >= 0; i--) {
+      final index = ((bit & 1) << 1) | (color & 1);
+      indexes[i] = index;
+
+      bit >>= 1;
+      color >>= 1;
+    }
+
+    return indexes;
+  }
+
+  List<int> _tileMapToColors(int tileX, int tileY, int row, bool high) {
+    var baseAddr = 0x9800 - 0x8000;
+    if (high) {
+      baseAddr = 0x9C00 - 0x8000;
+    }
+
+    final indexAddr = tileX + tileY * 32;
+
+    final addr = baseAddr.wrappingAddU16(indexAddr);
+
+    final tileNum = _vram[addr];
+
+    return _tileToIndexes(tileNum, row, !_lcdControl.tileDataSelect.val);
+  }
+
+  List<_OamColor> _oamToColors(_Oam oam) {
+    var row = _y + 16 - oam.yPos;
+    var tile = oam.tileNum;
+
+    if (oam.spriteFlag.yFlip.val) {
+      var limit = 8;
+
+      if (_lcdControl.spriteSize.val) {
+        limit = 16;
+      }
+
+      row = limit - row - 1;
+    }
+
+    if (row >= 8) {
+      row -= 8;
+      tile += 1;
+    }
+
+    var palette = _objectPalette0;
+
+    if (oam.spriteFlag.paletteNum.val) {
+      palette = _objectPalette1;
+    }
+
+    final blend = oam.spriteFlag.priority;
+
+    var colors = _OamColor.fromColorIndexes(
+        _tileToIndexes(tile, row, false), blend.val, palette);
+
+    if (oam.spriteFlag.xFlip.val) {
+      colors = colors.reversed.toList();
+    }
+
+    return colors;
+  }
+
+  void _scanOam(int i) {
+    var size = 8;
+    if (_lcdControl.spriteSize.val) {
+      size = 16;
+    }
+
+    final o = _oam[i];
+    final curY = _lines + 16;
+    final targetY = o.yPos;
+
+    if (o.xPos > 8 &&
+        curY < targetY + size &&
+        targetY <= curY &&
+        _buffer.length < 10) {
+      _buffer.add(o);
+    }
+  }
+
+  void _drawBg() {
+    if (_drawingWindow) {
+      return;
+    }
+
+    final cx = _x.wrappingAddU8(_scrollX);
+    final cy = _y.wrappingAddU8(_scrollY);
+    final col = cx % 8;
+    final row = cy % 8;
+    final tileX = cx ~/ 8;
+    final tileY = cy ~/ 8;
+
+    if (col == 0 || _x == 0) {
+      _curBg =
+          _tileMapToColors(tileX, tileY, row, _lcdControl.bgTileMapSelect.val);
+    }
+
+    _bgLine[_x] = _curBg[col];
+  }
+
+  void _drawWindow() {
+    if (!_drawingWindow && !(_x + 7 == _windowX && _y >= _windowY)) {
+      return;
+    }
+
+    _drawingWindow = true;
+
+    final cx = _x.wrappingSubU8(_windowX);
+    final cy = _y.wrappingSubU8(_windowY);
+    final col = cx % 8;
+    final row = cy % 8;
+    final tileX = cx ~/ 8;
+    final tileY = cy ~/ 8;
+
+    if (col == 0 || _x == 0) {
+      _curBg = _tileMapToColors(
+        tileX,
+        tileY,
+        row,
+        _lcdControl.windowTileMapSelect.val,
+      );
+    }
+    _bgLine[_x] = _curBg[col];
+  }
+
+  void _drawSprite() {
+    for (final oam in _buffer) {
+      if (oam.xPos == _x + 8) {
+        final colors = _oamToColors(oam);
+
+        for (var i = 0; i < 8; i++) {
+          _oamLine[_x + i] = colors[i];
+        }
+      }
+    }
+  }
+
+  void _putPixels(int x) {
+    final index = _bgLine[x];
+    var color = _bgPalette.values[index];
+
+    final oam = _oamLine[x];
+
+    if ((!oam.blend || index == 0) && oam.index != 0) {
+      color = oam.color;
+    }
+
+    final pixel = _colorToPixel[color];
+    for (var i = 0; i < 4; i++) {
+      pixels[(x + _y * _width) * 4 + i] = pixel[i];
+    }
+  }
+
+  void tick() {
+    _cycles += 1;
+
+    if (_cycles >= 456) {
+      _cycles = 0;
+      _lines += 1;
+      _buffer.clear();
+      _bgLine = List.filled(_width, 0);
+      _oamLine = List.generate(_width, (_) => _OamColor());
+    }
+
+    if (_lines >= 154) {
+      _lines = 0;
+    }
+
+    if (_cycles == 80) {
+      _x = 0;
+    }
+
+    if (_lines == 0) {
+      _y = 0;
+    }
+
+    if (_lines < 144) {
+      _y = _lines;
+
+      if (0 <= _cycles && _cycles <= 79) {
+        _mode = _Mode.oamScan;
+      }
+
+      if (_cycles == 80) {
+        _mode = _Mode.drawing;
+      }
+
+      if (81 <= _cycles && _cycles <= 239) {
+        _x += 1;
+      }
+
+      if (240 <= _cycles && _cycles <= 455) {
+        _mode = _Mode.hBlank;
+      }
+    }
+
+    if (_lines == 144) {
+      _mode = _Mode.vBlank;
+    }
+
+    switch (_mode) {
+      case _Mode.drawing:
+        if (_prevMode != _mode) {
+          _lcdStatus.ppuMode0.set();
+          _lcdStatus.ppuMode1.set();
+        }
+
+        if (_lcdControl.bgWinEnable.val) {
+          if (_lcdControl.windowDisplayEnable.val) {
+            _drawWindow();
+          }
+
+          _drawBg();
+        }
+
+        if (_lcdControl.spriteEnable.val) {
+          _drawSprite();
+        }
+        break;
+      case _Mode.hBlank:
+        if (_prevMode != _mode) {
+          _lcdStatus.ppuMode0.reset();
+          _lcdStatus.ppuMode1.reset();
+
+          intLcdStat |= _lcdStatus.mode0StatIntEnable.val;
+
+          _lcdStatus.coincidenceFlag.val = _lines == _linesCompare;
+
+          intLcdStat |= _lcdStatus.lycLyStatIntEnable.val &&
+              _lcdStatus.coincidenceFlag.val;
+
+          _drawingWindow = false;
+        }
+
+        if (_cycles < 400) {
+          _putPixels(_cycles - 240);
+        }
+        break;
+      case _Mode.oamScan:
+        if (_prevMode != _mode) {
+          _lcdStatus.ppuMode0.reset();
+          _lcdStatus.ppuMode1.set();
+
+          intLcdStat |= _lcdStatus.mode2StatIntEnable.val;
+        }
+
+        if (_cycles % 2 == 0) {
+          _scanOam(_cycles ~/ 2);
+        }
+        break;
+      case _Mode.vBlank:
+        if (_prevMode != _mode) {
+          _lcdStatus.ppuMode0.set();
+          _lcdStatus.ppuMode1.reset();
+
+          intVBlank = true;
+
+          intLcdStat |= _lcdStatus.mode1StatIntEnable.val;
+        }
+
+        break;
+      default:
+    }
+
+    _prevMode = _mode;
+  }
+
+  int read(int addr) {
+    return _vram[addr - 0x8000];
+  }
+
+  void write(int addr, int val) {
+    _vram[addr - 0x8000] = val;
+  }
+
+  int readOam(int addr) {
+    final indexAddr = addr - 0xFE00;
+    final index = indexAddr ~/ 4;
+    final offset = indexAddr % 4;
+    final o = _oam[index];
+
+    switch (offset) {
+      case 0:
+        return o.yPos;
+      case 1:
+        return o.xPos;
+      case 2:
+        return o.tileNum;
+      case 3:
+        return o.spriteFlag.toU8();
+      default:
+        return 0;
+    }
+  }
+
+  void writeOam(int addr, int val) {
+    final indexAddr = addr - 0xFE00;
+    final index = indexAddr ~/ 4;
+    final offset = indexAddr % 4;
+
+    switch (offset) {
+      case 0:
+        _oam[index].yPos = val;
+        break;
+      case 1:
+        _oam[index].xPos = val;
+        break;
+      case 2:
+        _oam[index].tileNum = val;
+        break;
+      case 3:
+        _oam[index].spriteFlag = _SpriteFlags.fromU8(val);
+        break;
+    }
+  }
+
+  int readLcdControl() {
+    return _lcdControl.toU8();
+  }
+
+  void writeLcdControl(int val) {
+    _lcdControl = _LcdControl.fromU8(val);
+  }
+
+  int readLcdStatus() {
+    return _lcdStatus.toU8();
+  }
+
+  void writeLcdStatus(int val) {
+    _lcdStatus = _LcdStatus.fromU8(val);
+  }
+
+  int readScrollY() {
+    return _scrollY;
+  }
+
+  void writeScrollY(int val) {
+    _scrollY = val;
+  }
+
+  int readScrollX() {
+    return _scrollX;
+  }
+
+  void writeScrollX(int val) {
+    _scrollX = val;
+  }
+
+  int readLines() {
+    return _lines;
+  }
+
+  int readLineCompare() {
+    return _linesCompare;
+  }
+
+  void writeLineCompare(int val) {
+    _linesCompare = val;
+  }
+
+  int readWindowX() {
+    return _windowX;
+  }
+
+  void writeWindowX(int val) {
+    _windowX = val;
+  }
+
+  int readWindowY() {
+    return _windowY;
+  }
+
+  void writeWindowY(int val) {
+    _windowY = val;
+  }
+
+  int readBgPalette() {
+    return _bgPalette.toU8();
+  }
+
+  void writeBgPalette(int val) {
+    _bgPalette = _Palette.fromU8(val);
+  }
+
+  int readObjectPalette0() {
+    return _objectPalette0.toU8();
+  }
+
+  void writeObjectPalette0(int val) {
+    _objectPalette0 = _Palette.fromU8(val);
+  }
+
+  int readObjectPalette1() {
+    return _objectPalette1.toU8();
+  }
+
+  void writeObjectPalette1(int val) {
+    _objectPalette1 = _Palette.fromU8(val);
+  }
+
+  Uint8List render() {
+    return Uint8List.fromList(pixels.toList());
+  }
+}

lib/emulator/rom.dart

@@ -0,0 +1,135 @@
+import 'package:dartboy/emulator/utils.dart';
+
+enum MbcType {
+  romOnly,
+  mbc1,
+  mbc1Ram,
+  mbc1RamBattery,
+  mbc2,
+  mbc2Battery,
+  romRam,
+  romRamBattery,
+  mmm01,
+  mmm01Ram,
+  mmm01RamBattery,
+  mbc3,
+  mbc3Ram,
+  mbc3RamBattery,
+}
+
+extension MbcTypeExt on MbcType {
+  static MbcType fromU8(int u8) {
+    switch (u8) {
+      case 0x00:
+        return MbcType.romOnly;
+      case 0x01:
+        return MbcType.mbc1;
+      case 0x02:
+        return MbcType.mbc1Ram;
+      case 0x03:
+        return MbcType.mbc1RamBattery;
+      case 0x05:
+        return MbcType.mbc2;
+      case 0x06:
+        return MbcType.mbc2Battery;
+      case 0x08:
+        return MbcType.romRam;
+      case 0x09:
+        return MbcType.romRamBattery;
+      case 0x0b:
+        return MbcType.mmm01;
+      case 0x0c:
+        return MbcType.mmm01Ram;
+      case 0x0d:
+        return MbcType.mmm01RamBattery;
+      case 0x11:
+        return MbcType.mbc3;
+      case 0x12:
+        return MbcType.mbc3Ram;
+      case 0x13:
+        return MbcType.mbc3RamBattery;
+      default:
+        throw ArgumentError.value(u8);
+    }
+  }
+}
+
+class Rom {
+  late MbcType mbcType;
+  late int romSize;
+  late int ramSize;
+  late int headerChecksum;
+  late List<int> data;
+
+  Rom(this.data) {
+    mbcType = MbcTypeExt.fromU8(data[0x0147]);
+
+    final size = data[0x0148];
+    switch (size) {
+      case 0x00:
+      case 0x01:
+      case 0x02:
+      case 0x03:
+      case 0x04:
+      case 0x05:
+      case 0x06:
+      case 0x07:
+      case 0x08:
+        romSize = (32 * 1024) << size;
+        break;
+      case 0x52:
+        romSize = (1.1 * 1024 * 1024).floor();
+        break;
+
+      case 0x53:
+        romSize = (1.2 * 1024 * 1024).floor();
+        break;
+
+      case 0x54:
+        romSize = (1.5 * 1024 * 1024).floor();
+        break;
+
+      default:
+        throw ArgumentError.value(size);
+    }
+
+    switch (data[0x0149]) {
+      case 0x00:
+        ramSize = 0;
+        break;
+      case 0x01:
+        ramSize = 2 * 1024 * 1024;
+        break;
+      case 0x02:
+        ramSize = 8 * 1024 * 1024;
+        break;
+      case 0x03:
+        ramSize = 32 * 1024 * 1024;
+        break;
+      case 0x04:
+        ramSize = 128 * 1024 * 1024;
+        break;
+      case 0x05:
+        ramSize = 64 * 1024 * 1024;
+        break;
+      default:
+        throw ArgumentError.value(data[0x0149]);
+    }
+
+    headerChecksum = data[0x014D];
+
+    var chksum = 0;
+
+    for (var i = 0x0134; i <= 0x014C; i++) {
+      chksum = chksum.wrappingSubU8(data[i]).wrappingSubU8(1);
+    }
+
+    if (headerChecksum != chksum) {
+      throw StateError('header checksum mismatch');
+    }
+
+    if (romSize != data.length) {
+      throw StateError('rom size mismatch');
+    }
+  }
+}

lib/emulator/timer.dart

@@ -0,0 +1,106 @@
+import 'package:dartboy/emulator/utils.dart';
+
+enum _Clock {
+  clock4096,
+  clock262144,
+  clock65536,
+  clock16384,
+}
+
+class Timer {
+  int _counter = 0;
+  int _tima = 0;
+  int _tma = 0;
+  bool _enable = false;
+  _Clock _clock = _Clock.clock4096;
+  bool _prev = false;
+
+  bool interrupt = false;
+
+  void _sync() {
+    var cur = false;
+
+    if (_enable) {
+      int mask;
+      switch (_clock) {
+        case _Clock.clock4096:
+          mask = 1 << 9;
+          break;
+
+        case _Clock.clock262144:
+          mask = 1 << 3;
+          break;
+
+        case _Clock.clock65536:
+          mask = 1 << 5;
+          break;
+
+        case _Clock.clock16384:
+          mask = 1 << 7;
+          break;
+      }
+
+      cur = _counter & mask > 0;
+    }
+
+    if (_prev && !cur) {
+      _tima = _tima.wrappingAddU8(1);
+
+      if (_counter % 4 == 0 && _tima == 0) {
+        _tima = _tma;
+        interrupt = true;
+      }
+    }
+
+    _prev = cur;
+  }
+
+  void tick() {
+    _counter = _counter.wrappingAddU16(1);
+
+    _sync();
+  }
+
+  int readDiv() => (_counter >> 8).toU8();
+
+  void writeDiv(int _) {
+    _counter = 0;
+  }
+
+  int readTima() => _tima;
+
+  void writeTima(int val) {
+    _sync();
+
+    _tima = val;
+  }
+
+  int readTma() => _tma;
+
+  void writeTma(int val) {
+    _tma = val;
+
+    _sync();
+  }
+
+  int readTac() {
+    return bitpack([
+      false,
+      false,
+      false,
+      false,
+      false,
+      _enable,
+      isSet(_clock.index, 1),
+      isSet(_clock.index, 0)
+    ]);
+  }
+
+  void writeTac(int val) {
+    _enable = isSet(val, 2);
+
+    final index = val & 3;
+
+    _clock = _Clock.values[index];
+  }
+}

lib/emulator/utils.dart

@@ -0,0 +1,102 @@
+bool isSet(int val, int offset) {
+  return val & (1 << offset) > 0;
+}
+
+int oneHot(bool? v, int offset) {
+  return ((v ?? false) ? 1 : 0) << offset;
+}
+
+int bitpack(List<bool> list) {
+  return List.generate(8, (i) => oneHot(list[i], 7 - i))
+      .fold(0, (acc, v) => acc | v);
+}
+
+int decodeX(int opecode) {
+  return (opecode >> 3) & 7;
+}
+
+int decodeY(int opecode) {
+  return opecode & 7;
+}
+
+int decodeR(int opecode) {
+  return (opecode >> 4) & 3;
+}
+
+class Bit {
+  Bit(this.val);
+
+  factory Bit.fromU8(int u8, int index) => Bit(isSet(u8, index));
+
+  bool val;
+
+  void set() {
+    val = true;
+  }
+
+  void reset() {
+    val = false;
+  }
+}
+
+class BitFieldU8 {
+  BitFieldU8(Map<int, bool> _values)
+      : values = Map.fromEntries(
+            List.generate(8, (i) => MapEntry(i, Bit(_values[i] ?? false))));
+
+  BitFieldU8.fromU8(int u8)
+      : values = Map.fromEntries(
+            List.generate(8, (i) => MapEntry(i, Bit.fromU8(u8, i))));
+
+  Map<int, Bit> values;
+
+  Bit value(int offset) {
+    assert(0 <= offset && offset < 8);
+    return values[offset]!;
+  }
+
+  int toU8() => List.generate(8, (i) => oneHot(values[i]!.val, i))
+      .fold(0, (acc, val) => acc | val);
+}
+
+extension IntExt on int {
+  int wrappingAddU8(int rhs) {
+    return (this + rhs).toU8();
+  }
+
+  int wrappingAddU16(int rhs) {
+    return (this + rhs).toU16();
+  }
+
+  int wrappingSubU8(int rhs) {
+    return (this - rhs).toU8();
+  }
+
+  int wrappingSubU16(int rhs) {
+    return (this - rhs).toU16();
+  }
+
+  int rotateLeftU8() {
+    final left = isSet(this, 7);
+    return ((this << 1) | (left ? 1 : 0)).toU8();
+  }
+
+  int rotateRightU8() {
+    final right = isSet(this, 0);
+    return (this >> 1).toU8() | oneHot(right, 7);
+  }
+
+  int toU8() {
+    return this & 0xFF;
+  }
+
+  int toU16() {
+    return this & 0xFFFF;
+  }
+
+  int toI8() {
+    if (!isSet(this, 7)) return this;
+
+    return this - 0x0100;
+  }
+}

lib/main.dart

@@ -0,0 +1,670 @@
+import 'dart:async';
+import 'dart:io';
+import 'dart:isolate';
+import 'dart:math';
+import 'dart:typed_data';
+import 'dart:ui' as ui;
+
+import 'package:dartboy/emulator/gameboy.dart';
+import 'package:dartboy/emulator/joypad.dart';
+import 'package:dartboy/emulator/rom.dart';
+import 'package:file_picker/file_picker.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/painting.dart';
+import 'package:flutter/services.dart';
+
+const _width = 160.0;
+const _height = 144.0;
+const _primaryColor = Color.fromARGB(255, 67, 57, 180);
+const _buttonColor = Color.fromARGB(255, 140, 25, 82);
+const _directionColor = Color.fromARGB(255, 22, 24, 29);
+const _gbColor = Color.fromARGB(255, 204, 202, 195);
+const _seColor = Color.fromARGB(255, 117, 116, 118);
+const _paddingColor = Color.fromARGB(255, 99, 97, 110);
+const _screenColor = Color.fromARGB(255, 98, 122, 3);
+
+void main() {
+  final parentRx = ReceivePort();
+
+  Isolate.spawn(_launchGameboy, parentRx.sendPort);
+
+  ValueNotifier<ui.Image?> image = ValueNotifier(null);
+  ValueNotifier<int> fps = ValueNotifier(0);
+  SendPort? childTx;
+
+  parentRx.listen((e) {
+    if (e is SendPort) {
+      childTx = e;
+    }
+
+    if (e is RenderFrameEvent) {
+      ui.decodeImageFromPixels(e.frame, 256, 256, ui.PixelFormat.rgba8888,
+          (result) {
+        image.value = result;
+      });
+    }
+
+    if (e is FpsUpdateEvent) {
+      fps.value = e.fps;
+    }
+  });
+
+  runApp(MyApp(
+    image: image,
+    fps: fps,
+    onRomSelected: (bytes) {
+      childTx?.send(FileSelectedEvent(bytes));
+    },
+    onKeyPressed: (key) {
+      childTx?.send(KeyPressedEvent(key));
+    },
+    onKeyReleased: (key) {
+      childTx?.send(KeyReleasedEvent(key));
+    },
+  ));
+}
+
+void _launchGameboy(SendPort parentTx) async {
+  final childRx = ReceivePort();
+
+  parentTx.send(childRx.sendPort);
+
+  final gb = GameBoy();
+
+  childRx.listen((message) {
+    if (message is FileSelectedEvent) {
+      final rom = Rom(message.bytes);
+
+      gb.load(rom);
+      gb.reset();
+    }
+
+    if (message is KeyPressedEvent) {
+      if (gb.ready) gb.press(message.key);
+    }
+
+    if (message is KeyReleasedEvent) {
+      if (gb.ready) gb.release(message.key);
+    }
+  });
+
+  var prevDateTime = DateTime.now();
+  var frameCount = 0;
+  var fpsTotal = 0.0;
+  var sleep = const Duration(milliseconds: 16);
+
+  while (true) {
+    if (gb.ready) {
+      for (var i = 0; i < 70224; i++) {
+        gb.tick();
+      }
+
+      final pixels = gb.render();
+
+      parentTx.send(RenderFrameEvent(pixels));
+    }
+
+    frameCount += 1;
+
+    await Future.delayed(sleep);
+
+    final current = DateTime.now();
+    final elapsed = current.difference(prevDateTime);
+    final fps = (1000 / elapsed.inMilliseconds).clamp(0, 80);
+
+    sleep = Duration(
+      milliseconds: max((sleep.inMilliseconds + (fps - 60.0)).floor(), 0),
+    );
+
+    fpsTotal += fps;
+
+    if (frameCount >= 60) {
+      parentTx.send(FpsUpdateEvent((fpsTotal / frameCount).floor()));
+
+      frameCount = 0;
+      fpsTotal = 0;
+    }
+
+    prevDateTime = current;
+  }
+}
+
+class FpsUpdateEvent {
+  FpsUpdateEvent(this.fps);
+
+  final int fps;
+}
+
+class RenderFrameEvent {
+  RenderFrameEvent(this.frame);
+
+  final Uint8List frame;
+}
+
+class FileSelectedEvent {
+  FileSelectedEvent(this.bytes);
+
+  final Uint8List bytes;
+}
+
+class KeyPressedEvent {
+  KeyPressedEvent(this.key);
+
+  final JoypadKey key;
+}
+
+class KeyReleasedEvent {
+  KeyReleasedEvent(this.key);
+
+  final JoypadKey key;
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({
+    Key? key,
+    required this.image,
+    required this.fps,
+    required this.onRomSelected,
+    required this.onKeyPressed,
+    required this.onKeyReleased,
+  }) : super(key: key);
+
+  final ValueNotifier<int> fps;
+  final ValueNotifier<ui.Image?> image;
+  final void Function(Uint8List) onRomSelected;
+  final void Function(JoypadKey) onKeyPressed;
+  final void Function(JoypadKey) onKeyReleased;
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'DART BOY',
+      theme: ThemeData(
+        primaryColor: _primaryColor,
+        canvasColor: _gbColor,
+      ),
+      home: MyHomePage(
+        title: 'DART BOY',
+        fps: fps,
+        image: image,
+        onRomSelected: onRomSelected,
+        onKeyPressed: onKeyPressed,
+        onKeyReleased: onKeyReleased,
+      ),
+    );
+  }
+}
+
+class MyHomePage extends StatefulWidget {
+  const MyHomePage({
+    Key? key,
+    required this.title,
+    required this.fps,
+    required this.image,
+    required this.onRomSelected,
+    required this.onKeyPressed,
+    required this.onKeyReleased,
+  }) : super(key: key);
+
+  final String title;
+  final ValueNotifier<int> fps;
+  final ValueNotifier<ui.Image?> image;
+  final void Function(Uint8List) onRomSelected;
+  final void Function(JoypadKey) onKeyPressed;
+  final void Function(JoypadKey) onKeyReleased;
+
+  @override
+  State<MyHomePage> createState() => _MyHomePageState();
+}
+
+class _MyHomePageState extends State<MyHomePage> {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        foregroundColor: _primaryColor,
+        backgroundColor: _gbColor,
+        title: Text(widget.title,
+            style: const TextStyle(
+              fontSize: 32.0,
+              fontWeight: FontWeight.w800,
+              fontStyle: FontStyle.italic,
+            )),
+      ),
+      body: Column(
+        crossAxisAlignment: CrossAxisAlignment.stretch,
+        children: [
+          Expanded(
+            child: _Screen(
+              fps: widget.fps,
+              image: widget.image,
+            ),
+          ),
+          Expanded(
+            child: _Controller(
+              onKeyPressed: widget.onKeyPressed,
+              onKeyReleased: widget.onKeyReleased,
+            ),
+          ),
+        ],
+      ),
+      floatingActionButton: FloatingActionButton(
+          onPressed: () async {
+            final result = await FilePicker.platform.pickFiles();
+            if (result == null) return;
+
+            var bytes = result.files.first.bytes;
+
+            if (bytes == null) {
+              final file = File(result.paths.first!);
+
+              bytes = await file.readAsBytes();
+            }
+
+            widget.onRomSelected(bytes);
+          },
+          backgroundColor: _seColor,
+          child: const Icon(
+            Icons.file_upload,
+            color: Colors.white,
+          )),
+    );
+  }
+}
+
+class _Screen extends StatefulWidget {
+  const _Screen({
+    Key? key,
+    required this.fps,
+    required this.image,
+  }) : super(key: key);
+
+  final ValueNotifier<int> fps;
+  final ValueNotifier<ui.Image?> image;
+
+  @override
+  State<StatefulWidget> createState() => _ScreenState();
+}
+
+class _ScreenState extends State<_Screen> {
+  @override
+  void initState() {
+    super.initState();
+
+    widget.image.addListener(_rebuild);
+  }
+
+  @override
+  void dispose() {
+    super.dispose();
+    widget.image.removeListener(_rebuild);
+  }
+
+  void _rebuild() {
+    setState(() {});
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return ColoredBox(
+      color: _paddingColor,
+      child: FittedBox(
+        child: Card(
+          elevation: 10,
+          clipBehavior: Clip.antiAlias,
+          child: CustomPaint(
+            painter: _ScreenPainter(
+              image: widget.image.value,
+            ),
+            child: SizedBox(
+              width: _width,
+              height: _height,
+              child: Align(
+                alignment: Alignment.topRight,
+                child: Padding(
+                  padding: const EdgeInsets.all(8.0),
+                  child: Text(
+                    widget.fps.value.toString(),
+                    style: const TextStyle(
+                      color: _primaryColor,
+                      fontSize: 6.0,
+                    ),
+                  ),
+                ),
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class _Controller extends StatelessWidget {
+  const _Controller({
+    Key? key,
+    required this.onKeyPressed,
+    required this.onKeyReleased,
+  }) : super(key: key);
+
+  final void Function(JoypadKey key) onKeyPressed;
+  final void Function(JoypadKey key) onKeyReleased;
+
+  static final _keyToJoypadKeyMap = {
+    LogicalKeyboardKey.keyZ: JoypadKey.a,
+    LogicalKeyboardKey.keyX: JoypadKey.b,
+    LogicalKeyboardKey.keyV: JoypadKey.start,
+    LogicalKeyboardKey.keyC: JoypadKey.select,
+    LogicalKeyboardKey.arrowUp: JoypadKey.up,
+    LogicalKeyboardKey.arrowDown: JoypadKey.down,
+    LogicalKeyboardKey.arrowRight: JoypadKey.right,
+    LogicalKeyboardKey.arrowLeft: JoypadKey.left,
+  };
+
+  @override
+  Widget build(BuildContext context) {
+    return KeyboardListener(
+      onKeyEvent: (key) {
+        final joypadKey = _keyToJoypadKeyMap[key.logicalKey];
+        if (joypadKey == null) return;
+
+        if (key is KeyDownEvent) {
+          onKeyPressed(joypadKey);
+        }
+        if (key is KeyUpEvent) {
+          onKeyReleased(joypadKey);
+        }
+      },
+      focusNode: FocusNode(),
+      autofocus: true,
+      child: FittedBox(
+        child: SizedBox(
+          width: 500,
+          height: 400,
+          child: ClipPath(
+            clipBehavior: Clip.antiAlias,
+            child: CustomPaint(
+              painter: const _ControllerPainter(),
+              child: Stack(
+                children: [
+                  Positioned(
+                    top: 100,
+                    right: 40,
+                    width: 60,
+                    height: 40,
+                    child: _ControllerButton(
+                      onPressed: () => onKeyPressed(JoypadKey.a),
+                      onReleased: () => onKeyReleased(JoypadKey.a),
+                      color: _buttonColor,
+                      child: const Text(
+                        'A',
+                        style: TextStyle(
+                          color: Colors.white,
+                        ),
+                      ),
+                    ),
+                  ),
+                  Positioned(
+                    top: 100,
+                    right: 110,
+                    width: 60,
+                    height: 40,
+                    child: _ControllerButton(
+                      onPressed: () => onKeyPressed(JoypadKey.b),
+                      onReleased: () => onKeyReleased(JoypadKey.b),
+                      color: _buttonColor,
+                      child: const Text(
+                        'B',
+                        style: TextStyle(
+                          color: Colors.white,
+                        ),
+                      ),
+                    ),
+                  ),
+                  Positioned(
+                    top: 100,
+                    left: 30,
+                    width: 50,
+                    height: 50,
+                    child: _ControllerButton(
+                      onPressed: () => onKeyPressed(JoypadKey.left),
+                      onReleased: () => onKeyReleased(JoypadKey.left),
+                      color: _directionColor,
+                      child: const Icon(
+                        Icons.arrow_left_rounded,
+                        color: Colors.white,
+                        semanticLabel: 'left',
+                      ),
+                    ),
+                  ),
+                  Positioned(
+                    top: 100,
+                    left: 130,
+                    width: 50,
+                    height: 50,
+                    child: _ControllerButton(
+                      onPressed: () => onKeyPressed(JoypadKey.right),
+                      onReleased: () => onKeyReleased(JoypadKey.right),
+                      color: _directionColor,
+                      child: const Icon(
+                        Icons.arrow_right_rounded,
+                        color: Colors.white,
+                        semanticLabel: 'right',
+                      ),
+                    ),
+                  ),
+                  Positioned(
+                    top: 50,
+                    left: 80,
+                    width: 50,
+                    height: 50,
+                    child: _ControllerButton(
+                      onPressed: () => onKeyPressed(JoypadKey.up),
+                      onReleased: () => onKeyReleased(JoypadKey.up),
+                      color: _directionColor,
+                      child: const Icon(
+                        Icons.arrow_drop_up_sharp,
+                        color: Colors.white,
+                        semanticLabel: 'up',
+                      ),
+                    ),
+                  ),
+                  Positioned(
+                    top: 150,
+                    left: 80,
+                    width: 50,
+                    height: 50,
+                    child: _ControllerButton(
+                      onPressed: () => onKeyPressed(JoypadKey.down),
+                      onReleased: () => onKeyReleased(JoypadKey.down),
+                      color: _directionColor,
+                      child: const Icon(
+                        Icons.arrow_drop_down_sharp,
+                        color: Colors.white,
+                        semanticLabel: 'down',
+                      ),
+                    ),
+                  ),
+                  Positioned(
+                    bottom: 80,
+                    left: 0,
+                    right: 0,
+                    height: 40,
+                    child: Center(
+                      child: SizedBox(
+                        width: 220,
+                        child: Row(
+                          mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                          children: [
+                            Transform.rotate(
+                              angle: -1 / 6 * pi,
+                              child: SizedBox(
+                                width: 100,
+                                height: double.infinity,
+                                child: _ControllerButton(
+                                  onPressed: () =>
+                                      onKeyPressed(JoypadKey.select),
+                                  onReleased: () =>
+                                      onKeyReleased(JoypadKey.select),
+                                  color: _seColor,
+                                  child: const Text(
+                                    'SELECT',
+                                    style: TextStyle(
+                                      color: Colors.white,
+                                    ),
+                                  ),
+                                ),
+                              ),
+                            ),
+                            Transform.rotate(
+                              angle: -1 / 6 * pi,
+                              child: SizedBox(
+                                width: 100,
+                                height: double.infinity,
+                                child: _ControllerButton(
+                                  onPressed: () =>
+                                      onKeyPressed(JoypadKey.start),
+                                  onReleased: () =>
+                                      onKeyReleased(JoypadKey.start),
+                                  color: _seColor,
+                                  child: const Text(
+                                    'START',
+                                    style: TextStyle(
+                                      color: Colors.white,
+                                    ),
+                                  ),
+                                ),
+                              ),
+                            ),
+                          ],
+                        ),
+                      ),
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class _ControllerButton extends StatelessWidget {
+  const _ControllerButton({
+    Key? key,
+    required this.color,
+    required this.onPressed,
+    required this.onReleased,
+    required this.child,
+  }) : super(key: key);
+
+  final Color color;
+  final void Function() onPressed;
+  final void Function() onReleased;
+  final Widget child;
+
+  @override
+  Widget build(BuildContext context) {
+    return Semantics(
+      button: true,
+      child: Material(
+        color: color,
+        elevation: 5,
+        shape: const RoundedRectangleBorder(
+          borderRadius: BorderRadius.all(Radius.circular(8.0)),
+        ),
+        child: InkWell(
+          onTapDown: (_) => onPressed(),
+          onTap: () => onReleased(),
+          onTapCancel: () => onReleased(),
+          child: Center(child: child),
+        ),
+      ),
+    );
+  }
+}
+
+class _ScreenPainter extends CustomPainter {
+  const _ScreenPainter({
+    required this.image,
+  });
+
+  final ui.Image? image;
+
+  @override
+  void paint(ui.Canvas canvas, ui.Size size) {
+    final paint = Paint()..color = _screenColor;
+
+    canvas.drawRect(Rect.fromLTWH(0, 0, size.width, size.height), paint);
+
+    if (image != null) {
+      canvas.drawImageRect(
+        image!,
+        const Rect.fromLTWH(0, 0, _width, _height),
+        Rect.fromLTWH(
+          0,
+          0,
+          size.width,
+          size.height,
+        ),
+        paint,
+      );
+    }
+  }
+
+  @override
+  bool shouldRepaint(covariant CustomPainter oldDelegate) {
+    return true;
+  }
+}
+
+class _ControllerPainter extends CustomPainter {
+  const _ControllerPainter();
+
+  @override
+  void paint(ui.Canvas canvas, ui.Size size) {
+    const color = Color.fromARGB(60, 117, 113, 103);
+    final paint = Paint()..color = color;
+
+    const width = 16.0;
+    const height = 80.0;
+
+    canvas.translate(
+      size.width - 2 * 6 * width - 10.0,
+      size.height - height - 10.0,
+    );
+    canvas.rotate(-1 / 6 * pi);
+
+    for (int i = 0; i < 6; i++) {
+      final x = width * i * 2.0;
+      const y = 0.0;
+      canvas.drawRRect(
+        RRect.fromLTRBR(
+          x,
+          y,
+          x + width,
+          y + height,
+          const Radius.circular(4.0),
+        ),
+        paint,
+      );
+    }
+
+    canvas.drawRect(
+      const Rect.fromLTWH(
+        -100,
+        height - 30,
+        2 * 6 * width + 200,
+        200,
+      ),
+      paint,
+    );
+  }
+
+  @override
+  bool shouldRepaint(covariant CustomPainter oldDelegate) {
+    return false;
+  }
+}

macos/.gitignore

@@ -0,0 +1,7 @@
+# Flutter-related
+**/Flutter/ephemeral/
+**/Pods/
+
+# Xcode-related
+**/dgph
+**/xcuserdata/

macos/Flutter/Flutter-Debug.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
+#include "ephemeral/Flutter-Generated.xcconfig"

macos/Flutter/Flutter-Release.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
+#include "ephemeral/Flutter-Generated.xcconfig"

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -0,0 +1,10 @@
+//
+//  Generated file. Do not edit.
+//
+
+import FlutterMacOS
+import Foundation
+
+
+func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+}

macos/Podfile

@@ -0,0 +1,43 @@
+platform :osx, '10.14'
+
+# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
+ENV['COCOAPODS_DISABLE_STATS'] = 'true'
+
+project 'Runner', {
+  'Debug' => :debug,
+  'Profile' => :release,
+  'Release' => :release,
+}
+
+def flutter_root
+  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'ephemeral', 'Flutter-Generated.xcconfig'), __FILE__)
+  unless File.exist?(generated_xcode_build_settings_path)
+    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure \"flutter pub get\" is executed first"
+  end
+
+  File.foreach(generated_xcode_build_settings_path) do |line|
+    matches = line.match(/FLUTTER_ROOT\=(.*)/)
+    return matches[1].strip if matches
+  end
+  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Flutter-Generated.xcconfig, then run \"flutter pub get\""
+end
+
+require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
+
+flutter_macos_podfile_setup
+
+target 'Runner' do
+  use_frameworks!
+  use_modular_headers!
+
+  flutter_install_all_macos_pods File.dirname(File.realpath(__FILE__))
+  target 'RunnerTests' do
+    inherit! :search_paths
+  end
+end
+
+post_install do |installer|
+  installer.pods_project.targets.each do |target|
+    flutter_additional_macos_build_settings(target)
+  end
+end

macos/Podfile.lock

@@ -0,0 +1,16 @@
+PODS:
+  - FlutterMacOS (1.0.0)
+
+DEPENDENCIES:
+  - FlutterMacOS (from `Flutter/ephemeral`)
+
+EXTERNAL SOURCES:
+  FlutterMacOS:
+    :path: Flutter/ephemeral
+
+SPEC CHECKSUMS:
+  FlutterMacOS: 8f6f14fa908a6fb3fba0cd85dbd81ec4b251fb24
+
+PODFILE CHECKSUM: 236401fc2c932af29a9fcf0e97baeeb2d750d367
+
+COCOAPODS: 1.13.0

macos/Runner.xcodeproj/project.pbxproj

@@ -0,0 +1,783 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 54;
+	objects = {
+
+/* Begin PBXAggregateTarget section */
+		33CC111A2044C6BA0003C045 /* Flutter Assemble */ = {
+			isa = PBXAggregateTarget;
+			buildConfigurationList = 33CC111B2044C6BA0003C045 /* Build configuration list for PBXAggregateTarget "Flutter Assemble" */;
+			buildPhases = (
+				33CC111E2044C6BF0003C045 /* ShellScript */,
+			);
+			dependencies = (
+			);
+			name = "Flutter Assemble";
+			productName = FLX;
+		};
+/* End PBXAggregateTarget section */
+
+/* Begin PBXBuildFile section */
+		28357809A88CF6D9A1255918 /* Pods_RunnerTests.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 8B151D3C397335FA112BA759 /* Pods_RunnerTests.framework */; };
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+		33CC11132044BFA00003C045 /* MainFlutterWindow.swift in Sources */ = {isa = PBXBuildFile; fileRef = 33CC11122044BFA00003C045 /* MainFlutterWindow.swift */; };
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+/* End PBXBuildFile section */
+
+/* Begin PBXContainerItemProxy section */
+		331C80D9294CF71000263BE5 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 33CC10E52044A3C60003C045 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 33CC10EC2044A3C60003C045;
+			remoteInfo = Runner;
+		};
+		33CC111F2044C79F0003C045 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 33CC10E52044A3C60003C045 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 33CC111A2044C6BA0003C045;
+			remoteInfo = FLX;
+		};
+/* End PBXContainerItemProxy section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		33CC110E2044A8840003C045 /* Bundle Framework */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 10;
+			files = (
+			);
+			name = "Bundle Framework";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
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+				28357809A88CF6D9A1255918 /* Pods_RunnerTests.framework in Frameworks */,
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+
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+			isa = PBXGroup;
+			children = (
+				331C80D7294CF71000263BE5 /* RunnerTests.swift */,
+			);
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+			sourceTree = "<group>";
+		};
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+			isa = PBXGroup;
+			children = (
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+				333000ED22D3DE5D00554162 /* Warnings.xcconfig */,
+			);
+			path = Configs;
+			sourceTree = "<group>";
+		};
+		33CC10E42044A3C60003C045 = {
+			isa = PBXGroup;
+			children = (
+				33FAB671232836740065AC1E /* Runner */,
+				33CEB47122A05771004F2AC0 /* Flutter */,
+				331C80D6294CF71000263BE5 /* RunnerTests */,
+				33CC10EE2044A3C60003C045 /* Products */,
+				D73912EC22F37F3D000D13A0 /* Frameworks */,
+				43EC50EF23A4F7D9F6413315 /* Pods */,
+			);
+			sourceTree = "<group>";
+		};
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+			isa = PBXGroup;
+			children = (
+				33CC10ED2044A3C60003C045 /* dartboy.app */,
+				331C80D5294CF71000263BE5 /* RunnerTests.xctest */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
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+			isa = PBXGroup;
+			children = (
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+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CODE_SIGN_IDENTITY = "-";
+				COPY_PHASE_STRIP = NO;
+				DEAD_CODE_STRIPPING = YES;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = NO;
+				GCC_C_LANGUAGE_STANDARD = gnu11;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 10.14;
+				MTL_ENABLE_DEBUG_INFO = NO;
+				SDKROOT = macosx;
+				SWIFT_COMPILATION_MODE = wholemodule;
+				SWIFT_OPTIMIZATION_LEVEL = "-O";
+			};
+			name = Release;
+		};
+		33CC10FC2044A3C60003C045 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 33E5194F232828860026EE4D /* AppInfo.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
+				CODE_SIGN_ENTITLEMENTS = Runner/DebugProfile.entitlements;
+				CODE_SIGN_STYLE = Automatic;
+				COMBINE_HIDPI_IMAGES = YES;
+				INFOPLIST_FILE = Runner/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/../Frameworks",
+				);
+				PROVISIONING_PROFILE_SPECIFIER = "";
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
+			};
+			name = Debug;
+		};
+		33CC10FD2044A3C60003C045 /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 33E5194F232828860026EE4D /* AppInfo.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
+				CODE_SIGN_ENTITLEMENTS = Runner/Release.entitlements;
+				CODE_SIGN_STYLE = Automatic;
+				COMBINE_HIDPI_IMAGES = YES;
+				INFOPLIST_FILE = Runner/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/../Frameworks",
+				);
+				PROVISIONING_PROFILE_SPECIFIER = "";
+				SWIFT_VERSION = 5.0;
+			};
+			name = Release;
+		};
+		33CC111C2044C6BA0003C045 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Manual;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+			};
+			name = Debug;
+		};
+		33CC111D2044C6BA0003C045 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Automatic;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		331C80DE294CF71000263BE5 /* Build configuration list for PBXNativeTarget "RunnerTests" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				331C80DB294CF71000263BE5 /* Debug */,
+				331C80DC294CF71000263BE5 /* Release */,
+				331C80DD294CF71000263BE5 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		33CC10E82044A3C60003C045 /* Build configuration list for PBXProject "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				33CC10F92044A3C60003C045 /* Debug */,
+				33CC10FA2044A3C60003C045 /* Release */,
+				338D0CE9231458BD00FA5F75 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		33CC10FB2044A3C60003C045 /* Build configuration list for PBXNativeTarget "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				33CC10FC2044A3C60003C045 /* Debug */,
+				33CC10FD2044A3C60003C045 /* Release */,
+				338D0CEA231458BD00FA5F75 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		33CC111B2044C6BA0003C045 /* Build configuration list for PBXAggregateTarget "Flutter Assemble" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				33CC111C2044C6BA0003C045 /* Debug */,
+				33CC111D2044C6BA0003C045 /* Release */,
+				338D0CEB231458BD00FA5F75 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 33CC10E52044A3C60003C045 /* Project object */;
+}

macos/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -0,0 +1,98 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion="1510"
+   version="1.3">
+   <BuildAction
+      parallelizeBuildables="YES"
+      buildImplicitDependencies="YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting="YES"
+            buildForRunning="YES"
+            buildForProfiling="YES"
+            buildForArchiving="YES"
+            buildForAnalyzing="YES">
+            <BuildableReference
+               BuildableIdentifier="primary"
+               BlueprintIdentifier="33CC10EC2044A3C60003C045"
+               BuildableName="dartboy.app"
+               BlueprintName="Runner"
+               ReferencedContainer="container:Runner.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration="Debug"
+      selectedDebuggerIdentifier="Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier="Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv="YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier="primary"
+            BlueprintIdentifier="33CC10EC2044A3C60003C045"
+            BuildableName="dartboy.app"
+            BlueprintName="Runner"
+            ReferencedContainer="container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <Testables>
+         <TestableReference
+            skipped="NO"
+            parallelizable="YES">
+            <BuildableReference
+               BuildableIdentifier="primary"
+               BlueprintIdentifier="331C80D4294CF70F00263BE5"
+               BuildableName="RunnerTests.xctest"
+               BlueprintName="RunnerTests"
+               ReferencedContainer="container:Runner.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration="Debug"
+      selectedDebuggerIdentifier="Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier="Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle="0"
+      useCustomWorkingDirectory="NO"
+      ignoresPersistentStateOnLaunch="NO"
+      debugDocumentVersioning="YES"
+      debugServiceExtension="internal"
+      allowLocationSimulation="YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode="0">
+         <BuildableReference
+            BuildableIdentifier="primary"
+            BlueprintIdentifier="33CC10EC2044A3C60003C045"
+            BuildableName="dartboy.app"
+            BlueprintName="Runner"
+            ReferencedContainer="container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration="Profile"
+      shouldUseLaunchSchemeArgsEnv="YES"
+      savedToolIdentifier=""
+      useCustomWorkingDirectory="NO"
+      debugDocumentVersioning="YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode="0">
+         <BuildableReference
+            BuildableIdentifier="primary"
+            BlueprintIdentifier="33CC10EC2044A3C60003C045"
+            BuildableName="dartboy.app"
+            BlueprintName="Runner"
+            ReferencedContainer="container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration="Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration="Release"
+      revealArchiveInOrganizer="YES">
+   </ArchiveAction>
+</Scheme>

macos/Runner.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
+</Workspace>

macos/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

macos/Runner/AppDelegate.swift

@@ -0,0 +1,9 @@
+import Cocoa
+import FlutterMacOS
+
+@NSApplicationMain
+class AppDelegate: FlutterAppDelegate {
+  override func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
+    return true
+  }
+}

macos/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,68 @@
+{
+  "images" : [
+    {
+      "size" : "16x16",
+      "idiom" : "mac",
+      "filename" : "app_icon_16.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "16x16",
+      "idiom" : "mac",
+      "filename" : "app_icon_32.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "32x32",
+      "idiom" : "mac",
+      "filename" : "app_icon_32.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "32x32",
+      "idiom" : "mac",
+      "filename" : "app_icon_64.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "128x128",
+      "idiom" : "mac",
+      "filename" : "app_icon_128.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "128x128",
+      "idiom" : "mac",
+      "filename" : "app_icon_256.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "256x256",
+      "idiom" : "mac",
+      "filename" : "app_icon_256.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "256x256",
+      "idiom" : "mac",
+      "filename" : "app_icon_512.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "512x512",
+      "idiom" : "mac",
+      "filename" : "app_icon_512.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "512x512",
+      "idiom" : "mac",
+      "filename" : "app_icon_1024.png",
+      "scale" : "2x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

macos/Runner/Base.lproj/MainMenu.xib

@@ -0,0 +1,343 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="14490.70" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" customObjectInstantitationMethod="direct">
+    <dependencies>
+        <deployment identifier="macosx"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="14490.70"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <customObject id="-2" userLabel="File's Owner" customClass="NSApplication">
+            <connections>
+                <outlet property="delegate" destination="Voe-Tx-rLC" id="GzC-gU-4Uq"/>
+            </connections>
+        </customObject>
+        <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
+        <customObject id="-3" userLabel="Application" customClass="NSObject"/>
+        <customObject id="Voe-Tx-rLC" customClass="AppDelegate" customModule="Runner" customModuleProvider="target">
+            <connections>
+                <outlet property="applicationMenu" destination="uQy-DD-JDr" id="XBo-yE-nKs"/>
+                <outlet property="mainFlutterWindow" destination="QvC-M9-y7g" id="gIp-Ho-8D9"/>
+            </connections>
+        </customObject>
+        <customObject id="YLy-65-1bz" customClass="NSFontManager"/>
+        <menu title="Main Menu" systemMenu="main" id="AYu-sK-qS6">
+            <items>
+                <menuItem title="APP_NAME" id="1Xt-HY-uBw">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="APP_NAME" systemMenu="apple" id="uQy-DD-JDr">
+                        <items>
+                            <menuItem title="About APP_NAME" id="5kV-Vb-QxS">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="orderFrontStandardAboutPanel:" target="-1" id="Exp-CZ-Vem"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="VOq-y0-SEH"/>
+                            <menuItem title="Preferences…" keyEquivalent="," id="BOF-NM-1cW"/>
+                            <menuItem isSeparatorItem="YES" id="wFC-TO-SCJ"/>
+                            <menuItem title="Services" id="NMo-om-nkz">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Services" systemMenu="services" id="hz9-B4-Xy5"/>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="4je-JR-u6R"/>
+                            <menuItem title="Hide APP_NAME" keyEquivalent="h" id="Olw-nP-bQN">
+                                <connections>
+                                    <action selector="hide:" target="-1" id="PnN-Uc-m68"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Hide Others" keyEquivalent="h" id="Vdr-fp-XzO">
+                                <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                <connections>
+                                    <action selector="hideOtherApplications:" target="-1" id="VT4-aY-XCT"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Show All" id="Kd2-mp-pUS">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="unhideAllApplications:" target="-1" id="Dhg-Le-xox"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="kCx-OE-vgT"/>
+                            <menuItem title="Quit APP_NAME" keyEquivalent="q" id="4sb-4s-VLi">
+                                <connections>
+                                    <action selector="terminate:" target="-1" id="Te7-pn-YzF"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="Edit" id="5QF-Oa-p0T">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Edit" id="W48-6f-4Dl">
+                        <items>
+                            <menuItem title="Undo" keyEquivalent="z" id="dRJ-4n-Yzg">
+                                <connections>
+                                    <action selector="undo:" target="-1" id="M6e-cu-g7V"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Redo" keyEquivalent="Z" id="6dh-zS-Vam">
+                                <connections>
+                                    <action selector="redo:" target="-1" id="oIA-Rs-6OD"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="WRV-NI-Exz"/>
+                            <menuItem title="Cut" keyEquivalent="x" id="uRl-iY-unG">
+                                <connections>
+                                    <action selector="cut:" target="-1" id="YJe-68-I9s"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Copy" keyEquivalent="c" id="x3v-GG-iWU">
+                                <connections>
+                                    <action selector="copy:" target="-1" id="G1f-GL-Joy"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Paste" keyEquivalent="v" id="gVA-U4-sdL">
+                                <connections>
+                                    <action selector="paste:" target="-1" id="UvS-8e-Qdg"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Paste and Match Style" keyEquivalent="V" id="WeT-3V-zwk">
+                                <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                <connections>
+                                    <action selector="pasteAsPlainText:" target="-1" id="cEh-KX-wJQ"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Delete" id="pa3-QI-u2k">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="delete:" target="-1" id="0Mk-Ml-PaM"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Select All" keyEquivalent="a" id="Ruw-6m-B2m">
+                                <connections>
+                                    <action selector="selectAll:" target="-1" id="VNm-Mi-diN"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="uyl-h8-XO2"/>
+                            <menuItem title="Find" id="4EN-yA-p0u">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Find" id="1b7-l0-nxx">
+                                    <items>
+                                        <menuItem title="Find…" tag="1" keyEquivalent="f" id="Xz5-n4-O0W">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="cD7-Qs-BN4"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Find and Replace…" tag="12" keyEquivalent="f" id="YEy-JH-Tfz">
+                                            <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="WD3-Gg-5AJ"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Find Next" tag="2" keyEquivalent="g" id="q09-fT-Sye">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="NDo-RZ-v9R"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Find Previous" tag="3" keyEquivalent="G" id="OwM-mh-QMV">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="HOh-sY-3ay"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Use Selection for Find" tag="7" keyEquivalent="e" id="buJ-ug-pKt">
+                                            <connections>
+                                                <action selector="performFindPanelAction:" target="-1" id="U76-nv-p5D"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Jump to Selection" keyEquivalent="j" id="S0p-oC-mLd">
+                                            <connections>
+                                                <action selector="centerSelectionInVisibleArea:" target="-1" id="IOG-6D-g5B"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Spelling and Grammar" id="Dv1-io-Yv7">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Spelling" id="3IN-sU-3Bg">
+                                    <items>
+                                        <menuItem title="Show Spelling and Grammar" keyEquivalent=":" id="HFo-cy-zxI">
+                                            <connections>
+                                                <action selector="showGuessPanel:" target="-1" id="vFj-Ks-hy3"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Check Document Now" keyEquivalent=";" id="hz2-CU-CR7">
+                                            <connections>
+                                                <action selector="checkSpelling:" target="-1" id="fz7-VC-reM"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="bNw-od-mp5"/>
+                                        <menuItem title="Check Spelling While Typing" id="rbD-Rh-wIN">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleContinuousSpellChecking:" target="-1" id="7w6-Qz-0kB"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Check Grammar With Spelling" id="mK6-2p-4JG">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleGrammarChecking:" target="-1" id="muD-Qn-j4w"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Correct Spelling Automatically" id="78Y-hA-62v">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticSpellingCorrection:" target="-1" id="2lM-Qi-WAP"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Substitutions" id="9ic-FL-obx">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Substitutions" id="FeM-D8-WVr">
+                                    <items>
+                                        <menuItem title="Show Substitutions" id="z6F-FW-3nz">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="orderFrontSubstitutionsPanel:" target="-1" id="oku-mr-iSq"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="gPx-C9-uUO"/>
+                                        <menuItem title="Smart Copy/Paste" id="9yt-4B-nSM">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleSmartInsertDelete:" target="-1" id="3IJ-Se-DZD"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Smart Quotes" id="hQb-2v-fYv">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticQuoteSubstitution:" target="-1" id="ptq-xd-QOA"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Smart Dashes" id="rgM-f4-ycn">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticDashSubstitution:" target="-1" id="oCt-pO-9gS"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Smart Links" id="cwL-P1-jid">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticLinkDetection:" target="-1" id="Gip-E3-Fov"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Data Detectors" id="tRr-pd-1PS">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticDataDetection:" target="-1" id="R1I-Nq-Kbl"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Text Replacement" id="HFQ-gK-NFA">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="toggleAutomaticTextReplacement:" target="-1" id="DvP-Fe-Py6"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Transformations" id="2oI-Rn-ZJC">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Transformations" id="c8a-y6-VQd">
+                                    <items>
+                                        <menuItem title="Make Upper Case" id="vmV-6d-7jI">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="uppercaseWord:" target="-1" id="sPh-Tk-edu"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Make Lower Case" id="d9M-CD-aMd">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="lowercaseWord:" target="-1" id="iUZ-b5-hil"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Capitalize" id="UEZ-Bs-lqG">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="capitalizeWord:" target="-1" id="26H-TL-nsh"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Speech" id="xrE-MZ-jX0">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Speech" id="3rS-ZA-NoH">
+                                    <items>
+                                        <menuItem title="Start Speaking" id="Ynk-f8-cLZ">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="startSpeaking:" target="-1" id="654-Ng-kyl"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Stop Speaking" id="Oyz-dy-DGm">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="stopSpeaking:" target="-1" id="dX8-6p-jy9"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="View" id="H8h-7b-M4v">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="View" id="HyV-fh-RgO">
+                        <items>
+                            <menuItem title="Enter Full Screen" keyEquivalent="f" id="4J7-dP-txa">
+                                <modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
+                                <connections>
+                                    <action selector="toggleFullScreen:" target="-1" id="dU3-MA-1Rq"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="Window" id="aUF-d1-5bR">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Window" systemMenu="window" id="Td7-aD-5lo">
+                        <items>
+                            <menuItem title="Minimize" keyEquivalent="m" id="OY7-WF-poV">
+                                <connections>
+                                    <action selector="performMiniaturize:" target="-1" id="VwT-WD-YPe"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="Zoom" id="R4o-n2-Eq4">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="performZoom:" target="-1" id="DIl-cC-cCs"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem isSeparatorItem="YES" id="eu3-7i-yIM"/>
+                            <menuItem title="Bring All to Front" id="LE2-aR-0XJ">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="arrangeInFront:" target="-1" id="DRN-fu-gQh"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
+                <menuItem title="Help" id="EPT-qC-fAb">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Help" systemMenu="help" id="rJ0-wn-3NY"/>
+                </menuItem>
+            </items>
+            <point key="canvasLocation" x="142" y="-258"/>
+        </menu>
+        <window title="APP_NAME" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" releasedWhenClosed="NO" animationBehavior="default" id="QvC-M9-y7g" customClass="MainFlutterWindow" customModule="Runner" customModuleProvider="target">
+            <windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" resizable="YES"/>
+            <rect key="contentRect" x="335" y="390" width="800" height="600"/>
+            <rect key="screenRect" x="0.0" y="0.0" width="2560" height="1577"/>
+            <view key="contentView" wantsLayer="YES" id="EiT-Mj-1SZ">
+                <rect key="frame" x="0.0" y="0.0" width="800" height="600"/>
+                <autoresizingMask key="autoresizingMask"/>
+            </view>
+        </window>
+    </objects>
+</document>

macos/Runner/Configs/AppInfo.xcconfig

@@ -0,0 +1,14 @@
+// Application-level settings for the Runner target.
+//
+// This may be replaced with something auto-generated from metadata (e.g., pubspec.yaml) in the
+// future. If not, the values below would default to using the project name when this becomes a
+// 'flutter create' template.
+
+// The application's name. By default this is also the title of the Flutter window.
+PRODUCT_NAME = dartboy
+
+// The application's bundle identifier
+PRODUCT_BUNDLE_IDENTIFIER = com.example.dartboy
+
+// The copyright displayed in application information
+PRODUCT_COPYRIGHT = Copyright © 2024 com.example. All rights reserved.

macos/Runner/Configs/Debug.xcconfig

@@ -0,0 +1,2 @@
+#include "../../Flutter/Flutter-Debug.xcconfig"
+#include "Warnings.xcconfig"

macos/Runner/Configs/Release.xcconfig

@@ -0,0 +1,2 @@
+#include "../../Flutter/Flutter-Release.xcconfig"
+#include "Warnings.xcconfig"