diff --git a/gbscreen.cpp b/gbscreen.cpp
index cb7bec0..bb653e1 100644
--- a/gbscreen.cpp
+++ b/gbscreen.cpp
@@ -17,9 +17,9 @@ namespace zxscreen
     SDL_Texture *tex = nullptr;
     SDL_Texture *uitex = nullptr;
 
-    uint32_t t_states_total = 69888;
-    uint32_t t_states_per_scanline = 224;
-    uint32_t vsync_lines = 16;
+    uint32_t t_states_total = 70224;
+    uint32_t t_states_per_scanline = 456;
+    uint32_t vsync_lines = 10;
 
     uint8_t zoom = 1;
     bool fullscreen = false;
@@ -30,18 +30,11 @@ namespace zxscreen
     uint32_t time=0;
 
     uint32_t t_screen = 0;
-    uint8_t t_flash = 0;
-    bool flash = false;
 
     int pixels_draw = 0;
 
-    uint16_t pixel_base_addr = 0x4000;
-    uint16_t color_base_addr = 0x5800;
-
-    uint16_t *pixel_addr = nullptr; //[69888];
-    uint16_t *color_addr = nullptr; //[69888];
-    uint8_t zx_pixels[352*296];
-    uint8_t *ptr_pixel = zx_pixels;
+    uint8_t gb_pixels[160*144];
+    uint8_t *ptr_pixel = gb_pixels;
 
     #define SCREEN_SYNC     0xFFFF
     #define SCREEN_BORDER   0xFFFE