diff --git a/screen.c b/screen.c
index 2eb17a2..fedc151 100644
--- a/screen.c
+++ b/screen.c
@@ -1,10 +1,12 @@
 #include "screen.h"
 #include "cpu.h"
 
+#include <SDL2/SDL.h>
+
 struct nk_color byte_to_color(uint8_t b)
 {
 	struct nk_color c;
-	c.r = (b >> 6) * (255 / 0b11);
+	c.r = (b >> 5) * (255 / 0b111);
 	c.g = ((b >> 2) & 0b111) * (255 / 0b111);
 	c.b = (b & 0b11) * (255 / 0b11);
 	c.a = 255;
@@ -32,7 +34,59 @@
 			nk_fill_rect(out,
 				nk_rect(bounds.x + i * size, bounds.y + j * size,
 					size, size), 0.0f,
-				byte_to_color(mem[i * CPU_FB_H + j]));
+				byte_to_color(mem[i + CPU_FB_H * j]));
 		}
 	}
 }
+
+sdl_screen_t new_sdl_screen(uint8_t size)
+{
+	sdl_screen_t scr;
+	scr.win = SDL_CreateWindow("6502",
+		SDL_WINDOWPOS_CENTERED,
+		SDL_WINDOWPOS_CENTERED,
+		size * 32,
+		size * 32,
+		0);
+	scr.size = size;
+	scr.r = SDL_CreateRenderer(scr.win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
+
+	return scr;
+}
+
+void sdl_screen(sdl_screen_t *scr, uint8_t *mem)
+{
+	SDL_RenderClear(scr->r);
+
+	SDL_Event e;
+
+	while (SDL_PollEvent(&e))
+	{
+		switch (e.type)
+		{
+			case SDL_QUIT:
+				exit(0);
+		}
+	}
+
+	for (int i = 0; i < CPU_FB_H; i++)
+	{
+		for (int j = 0; j < CPU_FB_W; j++)
+		{
+			SDL_Rect r =
+			{
+				i * scr->size,
+				j * scr->size,
+				scr->size,
+				scr->size,
+			};
+
+			struct nk_color c = byte_to_color(mem[i + CPU_FB_H * j]);
+
+			SDL_SetRenderDrawColor(scr->r, c.r, c.g, c.b, c.a);
+			SDL_RenderFillRect(scr->r, &r);
+		}
+	}
+
+	SDL_RenderPresent(scr->r);	
+}