diff --git a/ion/src/sdl/Makefile b/ion/src/sdl/Makefile
new file mode 100644
index 000000000..07368a953
--- /dev/null
+++ b/ion/src/sdl/Makefile
@@ -0,0 +1,33 @@
+# TODO
+objs += $(addprefix ion/src/shared/, \
+  crc32.o \
+  crc32_padded.o \
+  events.o \
+  events_modifier.o \
+  power.o \
+  random.o \
+  timing.o \
+  dummy/backlight.o \
+  dummy/battery.o \
+  dummy/fcc_id.o \
+  dummy/led.o \
+  dummy/serial_number.o \
+  dummy/stack.o \
+  dummy/usb.o \
+)
+
+objs += $(addprefix ion/src/sdl/, \
+  display.o \
+  events.o \
+  main.o \
+  keyboard.o \
+  layout.o \
+)
+
+objs += $(addprefix ion/src/sdl/android/, \
+  images.o \
+)
+
+SFLAGS += -I/Users/romain/Sources/SDL/include
+
+include ion/src/sdl/external/Makefile
diff --git a/ion/src/sdl/android/com.numworks.calculator/app/src/main/AndroidManifest.xml b/ion/src/sdl/android/com.numworks.calculator/app/src/main/AndroidManifest.xml
new file mode 100644
index 000000000..afabdf7b4
--- /dev/null
+++ b/ion/src/sdl/android/com.numworks.calculator/app/src/main/AndroidManifest.xml
@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Replace com.test.game with the identifier of your game below, e.g.
+     com.gamemaker.game
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.numworks.calculator"
+    android:versionCode="1"
+    android:versionName="1.0"
+    android:installLocation="auto">
+
+    <!-- OpenGL ES 2.0 -->
+    <uses-feature android:glEsVersion="0x00020000" />
+
+    <!-- Touchscreen support -->
+    <uses-feature
+        android:name="android.hardware.touchscreen"
+        android:required="false" />
+
+    <!-- Game controller support -->
+    <uses-feature
+        android:name="android.hardware.gamepad"
+        android:required="false" />
+
+    <!-- External mouse input events -->
+    <uses-feature
+        android:name="android.hardware.type.pc"
+        android:required="false" />
+
+    <!-- Allow writing to external storage -->
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <!-- Allow access to the vibrator -->
+    <uses-permission android:name="android.permission.VIBRATE" />
+
+    <!-- if you want to capture audio, uncomment this. -->
+    <!-- <uses-permission android:name="android.permission.RECORD_AUDIO" /> -->
+
+    <!-- Create a Java class extending SDLActivity and place it in a
+         directory under app/src/main/java matching the package, e.g. app/src/main/java/com/gamemaker/game/MyGame.java
+         then replace "SDLActivity" with the name of your class (e.g. "MyGame")
+         in the XML below.
+
+         An example Java class can be found in README-android.md
+    -->
+    <application android:label="@string/app_name"
+        android:icon="@mipmap/ic_launcher"
+        android:allowBackup="true"
+        android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
+        android:hardwareAccelerated="true" >
+
+        <!-- Example of setting SDL hints from AndroidManifest.xml:
+        <meta-data android:name="SDL_ENV.SDL_ACCELEROMETER_AS_JOYSTICK" android:value="0"/>
+         -->
+
+        <activity android:name="EpsilonActivity"
+            android:label="@string/app_name"
+            android:alwaysRetainTaskState="true"
+            android:launchMode="singleInstance"
+            android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
+            >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+            <!-- Drop file event -->
+            <!--
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="*/*" />
+            </intent-filter>
+            -->
+        </activity>
+    </application>
+
+</manifest>
diff --git a/ion/src/sdl/android/com.numworks.calculator/app/src/main/java/com/numworks/calculator/EpsilonActivity.java b/ion/src/sdl/android/com.numworks.calculator/app/src/main/java/com/numworks/calculator/EpsilonActivity.java
new file mode 100644
index 000000000..b07febd5b
--- /dev/null
+++ b/ion/src/sdl/android/com.numworks.calculator/app/src/main/java/com/numworks/calculator/EpsilonActivity.java
@@ -0,0 +1,34 @@
+package com.numworks.calculator;
+
+import android.graphics.Bitmap;
+//import android.graphics.Bitmap.CompressFormat;
+import android.graphics.BitmapFactory;
+import android.app.Activity;
+import android.util.Log;
+
+import org.libsdl.app.SDLActivity;
+
+public class EpsilonActivity extends SDLActivity {
+  protected String[] getLibraries() {
+    return new String[] {
+      "SDL2",
+      "epsilon"
+    };
+  }
+
+  public Bitmap retrieveBitmapAsset(String identifier) {
+    Log.w("LoadTexture", "Retrieving bitmap asset");
+    Log.w("LoadTexture", "Asset is " + identifier);
+    Bitmap bitmap = null;
+    try {
+      Log.w("LoadTexture", "Rez is " + this.getResources().getAssets().open(identifier));
+      bitmap = BitmapFactory.decodeStream(
+        this.getResources().getAssets().open(identifier)
+      );
+    } catch (Exception e) {
+      Log.w("LoadTexture", "Coundn't load a file:" + identifier);
+    }
+
+    return bitmap;
+  }
+}
diff --git a/ion/src/sdl/android/images.cpp b/ion/src/sdl/android/images.cpp
new file mode 100644
index 000000000..15a3905c6
--- /dev/null
+++ b/ion/src/sdl/android/images.cpp
@@ -0,0 +1,53 @@
+// This shall be implemented per-platform
+//
+#include <SDL.h>
+#include <jni.h>
+#include <android/bitmap.h>
+
+SDL_Surface * loadImage(const char * identifier) {
+  JNIEnv * env = static_cast<JNIEnv *>(SDL_AndroidGetJNIEnv());
+  jobject activity = static_cast<jobject>(SDL_AndroidGetActivity());
+
+  jstring j_identifier = env->NewStringUTF(identifier);
+
+  jclass j_class = env->FindClass("com/numworks/calculator/EpsilonActivity");
+  jmethodID j_methodId = env->GetMethodID(
+    j_class,
+    "retrieveBitmapAsset",
+    "(Ljava/lang/String;)Landroid/graphics/Bitmap;"
+  );
+
+  jobject j_bitmap = env->CallObjectMethod(activity, j_methodId, j_identifier);
+
+  AndroidBitmapInfo bitmapInfo;
+  AndroidBitmap_getInfo(env, j_bitmap, &bitmapInfo);
+
+  void * bitmapPixels = nullptr;
+  AndroidBitmap_lockPixels(env, j_bitmap, &bitmapPixels);
+  // TODO: Handle the case where lockPixels fails
+
+  SDL_Surface * inputSurface = SDL_CreateRGBSurfaceWithFormatFrom(
+    bitmapPixels,
+    bitmapInfo.width,
+    bitmapInfo.height,
+    32, // BPP. TODO: Infer from pixel format
+    4 * bitmapInfo.width, // Pitch. TODO: Infer from pixel format
+    SDL_PIXELFORMAT_ABGR8888
+  );
+
+  SDL_Surface * outputSurface = SDL_CreateRGBSurface(
+    0, // Flags. Unused.
+    bitmapInfo.width, // Width
+    bitmapInfo.height, // Height
+    32, // Bits per pixel
+    0, 0, 0, 0 // Default masks for the given depth
+  );
+
+  SDL_BlitSurface(inputSurface, NULL, outputSurface, NULL);
+
+  SDL_FreeSurface(inputSurface);
+
+  AndroidBitmap_unlockPixels(env, j_bitmap);
+
+  return outputSurface;
+}
diff --git a/ion/src/sdl/display.cpp b/ion/src/sdl/display.cpp
new file mode 100644
index 000000000..6c2c5822a
--- /dev/null
+++ b/ion/src/sdl/display.cpp
@@ -0,0 +1,59 @@
+#include "display.h"
+#include "keyboard.h"
+#include <ion/display.h>
+#include <SDL.h>
+
+static KDColor sPixels[Ion::Display::Width * Ion::Display::Height];
+
+namespace Ion {
+namespace Display {
+
+static KDFrameBuffer sFrameBuffer = KDFrameBuffer(sPixels, KDSize(Ion::Display::Width, Ion::Display::Height));
+
+void pushRect(KDRect r, const KDColor * pixels) {
+  sFrameBuffer.pushRect(r, pixels);
+}
+
+void pushRectUniform(KDRect r, KDColor c) {
+  sFrameBuffer.pushRectUniform(r, c);
+}
+
+void pullRect(KDRect r, KDColor * pixels) {
+  sFrameBuffer.pullRect(r, pixels);
+}
+
+void waitForVBlank() {
+}
+
+}
+}
+
+namespace Ion {
+namespace SDL {
+namespace Display {
+
+static SDL_Surface * sFramebufferSurface = nullptr;
+
+void init() {
+  sFramebufferSurface = SDL_CreateRGBSurfaceWithFormatFrom(
+    sPixels,
+    Ion::Display::Width,
+    Ion::Display::Height,
+    16,
+    Ion::Display::Width * 2,
+    SDL_PIXELFORMAT_RGB565
+  );
+}
+
+void quit() {
+  SDL_FreeSurface(sFramebufferSurface);
+  sFramebufferSurface = nullptr;
+}
+
+void blit(SDL_Surface * dst, SDL_Rect * rect) {
+  SDL_BlitScaled(sFramebufferSurface, NULL, dst, rect);
+}
+
+}
+}
+}
diff --git a/ion/src/sdl/display.h b/ion/src/sdl/display.h
new file mode 100644
index 000000000..7d3582304
--- /dev/null
+++ b/ion/src/sdl/display.h
@@ -0,0 +1,20 @@
+#ifndef ION_SDL_DISPLAY_H
+#define ION_SDL_DISPLAY_H
+
+#include <kandinsky.h>
+#include <SDL.h>
+
+namespace Ion {
+namespace SDL {
+namespace Display {
+
+void init();
+void quit();
+
+void blit(SDL_Surface * dst, SDL_Rect * rect);
+
+}
+}
+}
+
+#endif
diff --git a/ion/src/sdl/events.cpp b/ion/src/sdl/events.cpp
new file mode 100644
index 000000000..2d6324cd3
--- /dev/null
+++ b/ion/src/sdl/events.cpp
@@ -0,0 +1,43 @@
+#include "main.h"
+#include "layout.h"
+
+#include <ion/events.h>
+
+#include <SDL.h>
+
+namespace Ion {
+namespace Events {
+
+static bool needsRefresh = true;
+
+Event getEvent(int * timeout) {
+
+  if (needsRefresh) {
+    Ion::SDL::Main::refresh();
+    needsRefresh = false;
+  }
+
+  SDL_Event event;
+
+  if (!SDL_WaitEventTimeout(&event, *timeout)) {
+    return None;
+  }
+
+  if (event.type == SDL_FINGERDOWN) {
+    SDL_FPoint fp;
+    fp.x = event.tfinger.x;
+    fp.y = event.tfinger.y;
+    Keyboard::Key key = SDL::Layout::keyAtF(&fp);
+    if (key == Keyboard::Key::None) {
+      return None;
+    }
+    needsRefresh = true;
+    Event event = Event(key, isShiftActive(), isAlphaActive());
+    return event;
+  }
+
+  return None;
+}
+
+}
+}
diff --git a/ion/src/sdl/images.h b/ion/src/sdl/images.h
new file mode 100644
index 000000000..189e42333
--- /dev/null
+++ b/ion/src/sdl/images.h
@@ -0,0 +1,5 @@
+// This shall be implemented per-platform
+//
+#include <SDL.h>
+
+SDL_Surface * loadImage(const char * identifier);
diff --git a/ion/src/sdl/keyboard.cpp b/ion/src/sdl/keyboard.cpp
new file mode 100644
index 000000000..7ebf1b8a6
--- /dev/null
+++ b/ion/src/sdl/keyboard.cpp
@@ -0,0 +1,63 @@
+#include "keyboard.h"
+#include <ion/keyboard.h>
+
+#include <android/log.h>
+
+#include "images.h"
+
+#define APPNAME "MyApp"
+
+namespace Ion {
+namespace Keyboard {
+
+State scan() {
+  return State(0);
+}
+
+}
+}
+
+namespace Ion {
+namespace SDL {
+namespace Keyboard {
+
+using namespace Ion::Keyboard;
+
+static SDL_Rect s_rect;
+
+void init(SDL_Rect rect) {
+  s_rect = rect;
+}
+
+static SDL_Rect rectForKey(Key k) {
+  int i = static_cast<int>(k);
+  return {i%10, i/10, 10, 10};
+}
+
+void drawOnSurface(SDL_Surface * surface) {
+  for (int i=0; i<NumberOfValidKeys; i++) {
+    Key k = ValidKeys[i];
+    SDL_Rect r = rectForKey(k);
+    SDL_Rect scaledRect = {r.x * 32, r.y*24, 2, 2};
+    SDL_FillRect(surface, &scaledRect, SDL_MapRGB(surface->format, 0xFF, 0x00, 0xFF));
+  }
+}
+
+Key keyAt(SDL_Point p) {
+  __android_log_print(ANDROID_LOG_VERBOSE, APPNAME, "Looking up %dx%d", p.x, p.y);
+  for (int i=0; i<NumberOfValidKeys; i++) {
+    Key k = ValidKeys[i];
+    SDL_Rect r = rectForKey(k);
+    if (SDL_PointInRect(&p, &r)) {
+      __android_log_print(ANDROID_LOG_VERBOSE, APPNAME, "Got match at index %d", i);
+      return k;
+    }
+  }
+  __android_log_print(ANDROID_LOG_VERBOSE, APPNAME, "No match");
+  return Key::None;
+}
+
+
+}
+}
+}
diff --git a/ion/src/sdl/keyboard.h b/ion/src/sdl/keyboard.h
new file mode 100644
index 000000000..9c6863027
--- /dev/null
+++ b/ion/src/sdl/keyboard.h
@@ -0,0 +1,19 @@
+#ifndef ION_SDL_KEYBOARD_H
+#define ION_SDL_KEYBOARD_H
+
+#include <kandinsky.h>
+#include <SDL.h>
+#include <ion/keyboard.h>
+
+namespace Ion {
+namespace SDL {
+namespace Keyboard {
+
+void drawOnSurface(SDL_Surface * surface);
+Ion::Keyboard::Key keyAt(SDL_Point p);
+
+}
+}
+}
+
+#endif
diff --git a/ion/src/sdl/layout.cpp b/ion/src/sdl/layout.cpp
new file mode 100644
index 000000000..df06e18c0
--- /dev/null
+++ b/ion/src/sdl/layout.cpp
@@ -0,0 +1,121 @@
+#include "layout.h"
+
+namespace Ion {
+namespace SDL {
+namespace Layout {
+
+#define X(x) ((x)/(1250.0f))
+#define Y(y) ((y)/(2100.0f))
+
+static int sWidth = 0;
+static int sHeight = 0;
+
+static void makeAbsolute(SDL_FRect * f, SDL_Rect * r) {
+  r->x = f->x * sWidth;
+  r->y = f->y * sHeight;
+  r->w = f->w * sWidth;
+  r->h = f->h * sHeight;
+}
+
+static void makeAbsolute(SDL_FPoint * f, SDL_Point * p) {
+  p->x = f->x * sWidth;
+  p->y = f->y * sHeight;
+}
+
+void setSize(int width, int height) {
+  sWidth = width;
+  sHeight = height;
+}
+
+void getScreenRect(SDL_Rect * rect) {
+  SDL_FRect fRect;
+  fRect.x = X(310);
+  fRect.y = Y(215);
+  fRect.w = X(640);
+  fRect.h = Y(485);
+  makeAbsolute(&fRect, rect);
+}
+
+Keyboard::Key keyAtF(SDL_FPoint * f) {
+  SDL_Point p;
+  makeAbsolute(f, &p);
+  return keyAt(&p);
+}
+
+Keyboard::Key keyAt(SDL_Point * p) {
+  for (int i=0; i<Keyboard::NumberOfValidKeys; i++) {
+    SDL_Rect r;
+    getKeyRect(i, &r);
+    if (SDL_PointInRect(p, &r)) {
+      return Keyboard::ValidKeys[i];
+    }
+  }
+  return Keyboard::Key::None;
+}
+
+void getKeyRect(int validKeyIndex, SDL_Rect * rect) {
+  assert(validKeyIndex >= 0);
+  assert(validKeyIndex < Keyboard::NumberOfValidKeys);
+  SDL_FRect rectForKey[Keyboard::NumberOfValidKeys] = {
+    {X(250), Y(880), X(85),  Y(75) }, // A1, Left
+    {X(330), Y(795), X(75),  Y(85) }, // A2, Up
+    {X(330), Y(950), X(75),  Y(85) }, // A3, Down
+    {X(400), Y(880), X(85),  Y(75) }, // A4, Right
+    {X(765), Y(855), X(110), Y(110)}, // A5, OK
+    {X(900), Y(855), X(110), Y(110)}, // A6, Back
+
+    {X(565), Y(815), X(130), Y(85)}, // B1, Home
+    {X(565), Y(920), X(130), Y(85)}, // B2, Power
+
+    {X(255), Y(1066), X(110), Y(75)}, // C1, Shift
+    {X(385), Y(1066), X(110), Y(75)}, // C2, Alpha
+    {X(512), Y(1066), X(110), Y(75)}, // C3, xnt
+    {X(638), Y(1066), X(110), Y(75)}, // C4, var
+    {X(768), Y(1066), X(110), Y(75)}, // C5, toolbox
+    {X(895), Y(1066), X(110), Y(75)}, // C6, Delete
+
+    {X(255), Y(1170), X(110), Y(75)}, // D1, exp
+    {X(385), Y(1170), X(110), Y(75)}, // D2, ln
+    {X(512), Y(1170), X(110), Y(75)}, // D3, log
+    {X(638), Y(1170), X(110), Y(75)}, // D4, i
+    {X(768), Y(1170), X(110), Y(75)}, // D5, comma
+    {X(895), Y(1170), X(110), Y(75)}, // D6, power
+
+    {X(255), Y(1272), X(110), Y(75)}, // E1, sin
+    {X(385), Y(1272), X(110), Y(75)}, // E2, cos
+    {X(512), Y(1272), X(110), Y(75)}, // E3, tan
+    {X(638), Y(1272), X(110), Y(75)}, // E4, pi
+    {X(768), Y(1272), X(110), Y(75)}, // E5, sqrt
+    {X(895), Y(1272), X(110), Y(75)}, // E6, square
+
+    {X(255), Y(1376), X(130), X(85)}, // F1, 7
+    {X(408), Y(1376), X(130), X(85)}, // F2, 8
+    {X(564), Y(1376), X(130), X(85)}, // F3, 9
+    {X(718), Y(1376), X(130), X(85)}, // F4, (
+    {X(872), Y(1376), X(130), X(85)}, // F5, )
+
+    {X(255), Y(1490), X(130), X(85)}, // G1, 4
+    {X(408), Y(1490), X(130), X(85)}, // G2, 5
+    {X(564), Y(1490), X(130), X(85)}, // G3, 6
+    {X(718), Y(1490), X(130), X(85)}, // G4, *
+    {X(872), Y(1490), X(130), X(85)}, // G5, /
+
+    {X(255), Y(1605), X(130), X(85)}, // H1, 1
+    {X(408), Y(1605), X(130), X(85)}, // H2, 2
+    {X(564), Y(1605), X(130), X(85)}, // H3, 3
+    {X(718), Y(1605), X(130), X(85)}, // H4, +
+    {X(872), Y(1605), X(130), X(85)}, // H5, -
+
+    {X(255), Y(1718), X(130), X(85)}, // I1, 0
+    {X(408), Y(1718), X(130), X(85)}, // I2, .
+    {X(564), Y(1718), X(130), X(85)}, // I3, x10
+    {X(718), Y(1718), X(130), X(85)}, // I4, Ans
+    {X(872), Y(1718), X(130), X(85)}, // I5, EXE
+  };
+
+  makeAbsolute(&rectForKey[validKeyIndex], rect);
+}
+
+}
+}
+}
diff --git a/ion/src/sdl/layout.h b/ion/src/sdl/layout.h
new file mode 100644
index 000000000..a1afca516
--- /dev/null
+++ b/ion/src/sdl/layout.h
@@ -0,0 +1,23 @@
+#ifndef ION_SDL_LAYOUT_H
+#define ION_SDL_LAYOUT_H
+
+#include <ion/keyboard.h>
+#include <SDL.h>
+
+namespace Ion {
+namespace SDL {
+namespace Layout {
+
+void setSize(int w, int h);
+
+void getScreenRect(SDL_Rect * rect);
+Ion::Keyboard::Key keyAt(SDL_Point * p);
+Ion::Keyboard::Key keyAtF(SDL_FPoint * p);
+
+void getKeyRect(int validKeyIndex, SDL_Rect * rect);
+
+}
+}
+}
+
+#endif
diff --git a/ion/src/sdl/main.cpp b/ion/src/sdl/main.cpp
new file mode 100644
index 000000000..49059cfe1
--- /dev/null
+++ b/ion/src/sdl/main.cpp
@@ -0,0 +1,78 @@
+#include "main.h"
+#include "display.h"
+#include <ion.h>
+#include "images.h"
+#include "layout.h"
+
+#include <ion/timing.h>
+#include <ion/events.h>
+
+#include <SDL.h>
+
+void Ion::Timing::msleep(unsigned int) {
+  // Do nothing!
+}
+
+int main(int argc, char * argv[]) {
+  Ion::SDL::Main::init();
+  ion_main(argc, argv);
+  //Ion::SDL::Main::quit();
+  return 0;
+}
+
+namespace Ion {
+namespace SDL {
+namespace Main {
+
+static SDL_Window * sWindow = nullptr;
+static SDL_Surface * sSurface = nullptr;
+static SDL_Surface * sBackgroundSurface = nullptr;
+
+void init() {
+  if (SDL_Init(SDL_INIT_VIDEO) != 0) {
+    // Error...
+    return;
+  }
+
+  sWindow = SDL_CreateWindow(
+    "Epsilon",
+    SDL_WINDOWPOS_CENTERED,
+    SDL_WINDOWPOS_CENTERED,
+    0, 0,
+    SDL_WINDOW_RESIZABLE
+  );
+
+  SDL_SetWindowFullscreen(sWindow, 0);
+
+  sSurface = SDL_GetWindowSurface(sWindow);
+
+  Display::init();
+
+  sBackgroundSurface = loadImage("background.jpg");
+}
+
+void relayout() {
+  int windowWidth = 0;
+  int windowHeight = 0;
+  SDL_GetWindowSize(sWindow, &windowWidth, &windowHeight);
+  Layout::setSize(windowWidth, windowHeight);
+}
+
+static void blitBackground(SDL_Rect * rect) {
+  SDL_BlitScaled(sBackgroundSurface, NULL, sSurface, rect);
+}
+
+void refresh() {
+  relayout();
+
+  SDL_Rect screenRect;
+  Layout::getScreenRect(&screenRect);
+
+  blitBackground(nullptr);
+  Display::blit(sSurface, &screenRect);
+  SDL_UpdateWindowSurface(sWindow);
+}
+
+}
+}
+}
diff --git a/ion/src/sdl/main.h b/ion/src/sdl/main.h
new file mode 100644
index 000000000..5362dea02
--- /dev/null
+++ b/ion/src/sdl/main.h
@@ -0,0 +1,17 @@
+#ifndef ION_SDL_MAIN_H
+#define ION_SDL_MAIN_H
+
+namespace Ion {
+namespace SDL {
+namespace Main {
+
+void init();
+void quit();
+
+void refresh();
+
+}
+}
+}
+
+#endif