diff --git a/src/common/api.c b/src/common/api.c
index 0ba0a61..9f559c2 100644
--- a/src/common/api.c
+++ b/src/common/api.c
@@ -112,6 +112,12 @@ struct owlfb_mem_info {
 
 ///////////////////////////////
 
+uint32_t RGB_WHITE;
+uint32_t RGB_BLACK;
+uint32_t RGB_LIGHT_GRAY;
+uint32_t RGB_GRAY;
+uint32_t RGB_DARK_GRAY;
+
 static struct GFX_Context {
 	int mode;
 	int fb;
@@ -168,7 +174,7 @@ SDL_Surface* GFX_init(int mode) {
 	
 	// open framebuffer
 	gfx.fb = open("/dev/fb0", O_RDWR);
-
+	
 	// configure framebuffer
 	ioctl(gfx.fb, FBIOGET_VSCREENINFO, &gfx.vinfo);
 	gfx.vinfo.bits_per_pixel = SCREEN_DEPTH;
@@ -276,7 +282,8 @@ void GFX_flip(SDL_Surface* screen) {
 	static int ticks = 0;
 	ticks += 1;
 #ifdef GFX_ENABLE_VSYNC
-#define FRAME_BUDGET 17 // 60fps
+	// TODO: this condition doesn't make sense when using the threaded renderer
+	#define FRAME_BUDGET 17 // 60fps
 	if (frame_start==0 || SDL_GetTicks()-frame_start<FRAME_BUDGET) { // only wait if we're under frame budget
 		int arg = 1;
 		ioctl(gfx.fb, OWLFB_WAITFORVSYNC, &arg);
diff --git a/src/common/api.h b/src/common/api.h
index 77600c5..28370a9 100644
--- a/src/common/api.h
+++ b/src/common/api.h
@@ -20,11 +20,11 @@ void LOG_note(int level, const char* fmt, ...);
 
 ///////////////////////////////
 
-uint32_t RGB_WHITE;
-uint32_t RGB_BLACK;
-uint32_t RGB_LIGHT_GRAY;
-uint32_t RGB_GRAY;
-uint32_t RGB_DARK_GRAY;
+extern uint32_t RGB_WHITE;
+extern uint32_t RGB_BLACK;
+extern uint32_t RGB_LIGHT_GRAY;
+extern uint32_t RGB_GRAY;
+extern uint32_t RGB_DARK_GRAY;
 
 enum {
 	ASSET_WHITE_PILL,
diff --git a/src/common/defines.h b/src/common/defines.h
index b7a29eb..4502e33 100644
--- a/src/common/defines.h
+++ b/src/common/defines.h
@@ -60,24 +60,12 @@
 #define COLOR_DARK_TEXT		(SDL_Color){TRIAD_DARK_TEXT}
 #define COLOR_BUTTON_TEXT	(SDL_Color){TRIAD_GRAY}
 
-#define SCREEN_WIDTH 	640
-#define SCREEN_HEIGHT 	480
-#define SCREEN_SCALE 	2 // SCREEN_HEIGHT / 240
-
 #define BASE_WIDTH 320
 #define BASE_HEIGHT 240
 
-// SNES (stretched to 4:3)
-// #define SCREEN_WIDTH 1024
-// #define SCREEN_HEIGHT 896
-
-// GBA 
-// #define SCREEN_WIDTH 960
-// #define SCREEN_HEIGHT 720
-
-// GB converted to 4:3 with full height
-// #define SCREEN_WIDTH 768
-// #define SCREEN_HEIGHT 576
+#define SCREEN_WIDTH 	640
+#define SCREEN_HEIGHT 	480
+#define SCREEN_SCALE 	2 // SCREEN_HEIGHT / 240
 
 #define SCREEN_DEPTH 	16
 #define SCREEN_BPP 		2
diff --git a/src/minarch/main.c b/src/minarch/main.c
index db84cd0..b1f1a85 100644
--- a/src/minarch/main.c
+++ b/src/minarch/main.c
@@ -146,12 +146,10 @@ static struct Core {
 } core;
 
 ///////////////////////////////////////
-// saves and states
 
 static void SRAM_getPath(char* filename) {
 	sprintf(filename, "%s/%s.sav", core.saves_dir, game.name);
 }
-
 static void SRAM_read(void) {
 	size_t sram_size = core.get_memory_size(RETRO_MEMORY_SAVE_RAM);
 	if (!sram_size) return;
@@ -196,11 +194,12 @@ static void SRAM_write(void) {
 	sync();
 }
 
+///////////////////////////////////////
+
 static int state_slot = 0;
 static void State_getPath(char* filename) {
 	sprintf(filename, "%s/%s.st%i", core.config_dir, game.name, state_slot);
 }
-
 static void State_read(void) { // from picoarch
 	size_t state_size = core.serialize_size();
 	if (!state_size) return;
@@ -289,7 +288,9 @@ static void State_resume(void) {
 
 ///////////////////////////////
 
-// callbacks
+
+
+///////////////////////////////
 
 // TODO: tmp, naive options
 static int tmp_options_changed = 0;
@@ -1857,6 +1858,10 @@ void Menu_loop(void) {
 }
 
 int main(int argc , char* argv[]) {
+	// force a stack overflow to ensure asan is linked and actually working
+	// char tmp[2];
+	// tmp[2] = 'a';
+	
 	char core_path[MAX_PATH];
 	char rom_path[MAX_PATH]; 
 	char tag_name[MAX_PATH];
diff --git a/src/minarch/makefile b/src/minarch/makefile
index 8f9d4a9..5446e7c 100644
--- a/src/minarch/makefile
+++ b/src/minarch/makefile
@@ -7,7 +7,8 @@ TARGET = minarch.elf
 CC = $(CROSS_COMPILE)gcc
 CFLAGS   = -marm -mtune=cortex-a9 -mfpu=neon-vfpv4 -mfloat-abi=hard -march=armv7-a -fomit-frame-pointer
 CFLAGS  += -I. -I../common -I./libretro-common/include -DPLATFORM=\"$(UNION_PLATFORM)\" -Ofast # -Wall -Wno-unused-variable -Wno-unused-function
-LDFLAGS	 = -ldl -lSDL -lSDL_image -lSDL_ttf -lmsettings -lpthread
+# CFLAGS  += -fsanitize=address -fno-common
+LDFLAGS	 = -ldl -lSDL -lSDL_image -lSDL_ttf -lmsettings -lpthread # -lasan
 
 all:
 	$(CC) main.c ../common/scaler_neon.c ../common/utils.c ../common/api.c -o $(TARGET) $(CFLAGS) $(LDFLAGS)