diff --git a/Notes.org b/Notes.org
index d70fce7..0d77595 100644
--- a/Notes.org
+++ b/Notes.org
@@ -1,5 +1,7 @@
 * Chip8 Emulator
 
+Reference [[http://devernay.free.fr/hacks/chip8/C8TECH10.HTM][here]].
+
 ** The memory Layout
 
 The Chip8 has 4095 bytes of memory:
diff --git a/compile_flags.txt b/compile_flags.txt
new file mode 100644
index 0000000..05b6df6
--- /dev/null
+++ b/compile_flags.txt
@@ -0,0 +1,3 @@
+-Iinclude
+-Wall
+-Werror
diff --git a/include/chip8.h b/include/chip8.h
new file mode 100644
index 0000000..ed504fe
--- /dev/null
+++ b/include/chip8.h
@@ -0,0 +1,10 @@
+#ifndef __CHIP8_H
+#define __CHIP8_H
+
+#include "config.h"
+
+struct chip8
+{
+};
+
+#endif
diff --git a/include/config.h b/include/config.h
new file mode 100644
index 0000000..d449802
--- /dev/null
+++ b/include/config.h
@@ -0,0 +1,11 @@
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#define EMULATOR_WINDOW_TITLE "Chip8"
+#define EMULATOR_WINDOW_MULTIPLIER 10
+
+#define CHIP8_MEMORY_SIZE 4096
+#define CHIP8_DISPLAY_WIDTH 63
+#define CHIP8_DISPLAY_HEIGHT 32
+
+#endif
diff --git a/src/main.c b/src/main.c
index f598dde..f2c6603 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,13 +1,15 @@
 #include <SDL2/SDL.h>
-#include <stdio.h>
+
+#include "chip8.h"
 
 int
 main (int argc, char **argv)
 {
 	SDL_Init (SDL_INIT_EVERYTHING);
-	SDL_Window *window
-			= SDL_CreateWindow ("Chip8", SDL_WINDOWPOS_UNDEFINED,
-													SDL_WINDOWPOS_UNDEFINED, 640, 320, SDL_WINDOW_SHOWN);
+	SDL_Window *window = SDL_CreateWindow (
+			EMULATOR_WINDOW_TITLE, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
+			CHIP8_DISPLAY_WIDTH * EMULATOR_WINDOW_MULTIPLIER,
+			CHIP8_DISPLAY_HEIGHT * EMULATOR_WINDOW_MULTIPLIER, SDL_WINDOW_SHOWN);
 
 	SDL_Renderer *renderer
 			= SDL_CreateRenderer (window, -1, SDL_TEXTUREACCESS_TARGET);