Finished CPU instructions and created ui window.

lib/ui.c

@@ -0,0 +1,32 @@
+#include <ui.h>
+#include <emu.h>
+
+#include <SDL.h>
+#include <SDL_ttf.h>
+
+SDL_Window *sdlWindow;
+SDL_Renderer *sdlRenderer;
+SDL_Texture *sdlTexture;
+SDL_Surface *screen;
+
+void ui_init(){
+    SDL_Init(SDL_INIT_VIDEO);
+    printf("SDL INIT\n");
+    TTF_Init();
+    printf("TTF INIT\n");
+
+    SDL_CreateWindowAndRenderer(SCREEN_WIDTH, SCREEN_HEIGHT, 0, &sdlWindow, &sdlRenderer);
+}
+
+void ui_handle_events(){
+    SDL_Event e;
+    while(SDL_PollEvent(&e) > 0) {
+        if(e.type == SDL_WINDOWEVENT && e.window.event == SDL_WINDOWEVENT_CLOSE) {
+            emu_get_context()->die = true;
+        }
+    }
+}
+
+void delay(u32 ms) {
+    SDL_Delay(ms);
+}