diff --git a/src/code.c b/src/code.c
index d65211c..96e218d 100644
--- a/src/code.c
+++ b/src/code.c
@@ -1838,10 +1838,10 @@ void initCode(Code* code, tic_mem* tic)
 	*code = (Code)
 	{
 		.tic = tic,
-		.data = tic->cart.bank.code.data,
+		.data = getBankCode()->data,
 		.tick = tick,
 		.escape = escape,
-		.cursor = {{tic->cart.bank.code.data, NULL, 0, 0}, NULL, 0},
+		.cursor = {{getBankCode()->data, NULL, 0, 0}, NULL, 0},
 		.rect = {0, TOOLBAR_SIZE + 1, TIC80_WIDTH, TIC80_HEIGHT - TOOLBAR_SIZE - TIC_FONT_HEIGHT - 1},
 		.scroll = {0, 0, {0, 0}, false},
 		.tickCounter = 0,
diff --git a/src/map.c b/src/map.c
index d9600ce..28c939e 100644
--- a/src/map.c
+++ b/src/map.c
@@ -314,7 +314,7 @@ static void drawTileIndex(Map* map, s32 x, s32 y)
 		{
 			s32 tx = 0, ty = 0;
 			getMouseMap(map, &tx, &ty);
-			index = map->tic->api.map_get(map->tic, &map->tic->cart.bank.map, tx, ty);
+			index = map->tic->api.map_get(map->tic, getBankMap(), tx, ty);
 		}
 	}
 
@@ -397,7 +397,7 @@ static void drawSheetOvr(Map* map, s32 x, s32 y)
 
 	for(s32 j = 0, index = 0; j < rect.h; j += TIC_SPRITESIZE)
 		for(s32 i = 0; i < rect.w; i += TIC_SPRITESIZE, index++)
-			map->tic->api.sprite(map->tic, &map->tic->cart.bank.tiles, index, x + i, y + j, NULL, 0);
+			map->tic->api.sprite(map->tic, getBankTiles(), index, x + i, y + j, NULL, 0);
 
 	{
 		s32 bx = map->sheet.rect.x * TIC_SPRITESIZE - 1 + x;
@@ -437,7 +437,7 @@ static void setMapSprite(Map* map, s32 x, s32 y)
 
 	for(s32 j = 0; j < map->sheet.rect.h; j++)
 		for(s32 i = 0; i < map->sheet.rect.w; i++)
-			map->tic->api.map_set(map->tic, &map->tic->cart.bank.map, (x+i)%TIC_MAP_WIDTH, (y+j)%TIC_MAP_HEIGHT, (mx+i) + (my+j) * SHEET_COLS);
+			map->tic->api.map_set(map->tic, getBankMap(), (x+i)%TIC_MAP_WIDTH, (y+j)%TIC_MAP_HEIGHT, (mx+i) + (my+j) * SHEET_COLS);
 
 	history_add(map->history);
 }
@@ -470,7 +470,7 @@ static void drawTileCursor(Map* map)
 
 		for(s32 j = 0, ty=my; j < map->sheet.rect.h; j++, ty+=TIC_SPRITESIZE)
 			for(s32 i = 0, tx=mx; i < map->sheet.rect.w; i++, tx+=TIC_SPRITESIZE)
-				map->tic->api.sprite(map->tic, &map->tic->cart.bank.tiles, (sx+i) + (sy+j) * SHEET_COLS, tx, ty, NULL, 0);					
+				map->tic->api.sprite(map->tic, getBankTiles(), (sx+i) + (sy+j) * SHEET_COLS, tx, ty, NULL, 0);					
 	}
 
 	drawCursorPos(map, mx, my);
@@ -512,7 +512,7 @@ static void processMouseDrawMode(Map* map)
 	{
 		s32 tx = 0, ty = 0;
 		getMouseMap(map, &tx, &ty);
-		s32 index = map->tic->api.map_get(map->tic, &map->tic->cart.bank.map, tx, ty);
+		s32 index = map->tic->api.map_get(map->tic, getBankMap(), tx, ty);
 
 		map->sheet.rect = (SDL_Rect){index % SHEET_COLS, index / SHEET_COLS, 1, 1};
 	}
@@ -593,7 +593,7 @@ static void drawPasteData(Map* map)
 
 		for(s32 j = 0; j < h; j++)
 			for(s32 i = 0; i < w; i++)
-				map->tic->api.map_set(map->tic, &map->tic->cart.bank.map, (mx+i)%TIC_MAP_WIDTH, (my+j)%TIC_MAP_HEIGHT, data[i + j * w]);
+				map->tic->api.map_set(map->tic, getBankMap(), (mx+i)%TIC_MAP_WIDTH, (my+j)%TIC_MAP_HEIGHT, data[i + j * w]);
 
 		history_add(map->history);
 
@@ -612,7 +612,7 @@ static void drawPasteData(Map* map)
 		
 		for(s32 j = 0; j < h; j++)
 			for(s32 i = 0; i < w; i++)
-				map->tic->api.sprite(map->tic, &map->tic->cart.bank.tiles, data[i + j * w], mx + i*TIC_SPRITESIZE, my + j*TIC_SPRITESIZE, NULL, 0);
+				map->tic->api.sprite(map->tic, getBankTiles(), data[i + j * w], mx + i*TIC_SPRITESIZE, my + j*TIC_SPRITESIZE, NULL, 0);
 	}
 }
 
@@ -764,7 +764,7 @@ static void fillMap(Map* map, s32 x, s32 y, u8 tile)
 	{
 		for(s32 j = 0; j < map->sheet.rect.h; j++)
 			for(s32 i = 0; i < map->sheet.rect.w; i++)
-				map->tic->api.map_set(map->tic, &map->tic->cart.bank.map, x+i, y+j, (mx+i) + (my+j) * SHEET_COLS);
+				map->tic->api.map_set(map->tic, getBankMap(), x+i, y+j, (mx+i) + (my+j) * SHEET_COLS);
 
 		for(s32 i = 0; i < COUNT_OF(dx); i++) 
 		{
@@ -776,7 +776,7 @@ static void fillMap(Map* map, s32 x, s32 y, u8 tile)
 				bool match = true;
 				for(s32 j = 0; j < map->sheet.rect.h; j++)
 					for(s32 i = 0; i < map->sheet.rect.w; i++)
-						if(map->tic->api.map_get(map->tic, &map->tic->cart.bank.map, nx+i, ny+j) != tile)
+						if(map->tic->api.map_get(map->tic, getBankMap(), nx+i, ny+j) != tile)
 							match = false;
 
 				if(match)
@@ -801,7 +801,7 @@ static void processMouseFillMode(Map* map)
 		s32 tx = 0, ty = 0;
 		getMouseMap(map, &tx, &ty);
 
-		fillMap(map, tx, ty, map->tic->api.map_get(map->tic, &map->tic->cart.bank.map, tx, ty));
+		fillMap(map, tx, ty, map->tic->api.map_get(map->tic, getBankMap(), tx, ty));
 		history_add(map->history);
 	}
 }
@@ -864,7 +864,7 @@ static void drawMapOvr(Map* map)
 	s32 scrollX = map->scroll.x % TIC_SPRITESIZE;
 	s32 scrollY = map->scroll.y % TIC_SPRITESIZE;
 
-	map->tic->api.map(map->tic, &map->tic->cart.bank.map, &map->tic->cart.bank.tiles, map->scroll.x / TIC_SPRITESIZE, map->scroll.y / TIC_SPRITESIZE, 
+	map->tic->api.map(map->tic, getBankMap(), getBankTiles(), map->scroll.x / TIC_SPRITESIZE, map->scroll.y / TIC_SPRITESIZE, 
 		TIC_MAP_SCREEN_WIDTH + 1, TIC_MAP_SCREEN_HEIGHT + 1, -scrollX, -scrollY, -1, 1);
 
 	if(map->canvas.grid || map->scroll.active)
@@ -950,7 +950,7 @@ static void copySelectionToClipboard(Map* map)
 					normalizeMapRect(&x, &y);
 
 					s32 index = x + y * TIC_MAP_WIDTH;
-					*ptr++ = map->tic->cart.bank.map.data[index];
+					*ptr++ = getBankMap()->data[index];
 				}		
 
 			toClipboard(buffer, size, true);
@@ -978,7 +978,7 @@ static void deleteSelection(Map* map)
 				normalizeMapRect(&x, &y);
 
 				s32 index = x + y * TIC_MAP_WIDTH;
-				map->tic->cart.bank.map.data[index] = 0;
+				getBankMap()->data[index] = 0;
 			}
 
 		history_add(map->history);
diff --git a/src/music.c b/src/music.c
index 9cd78e1..a2325a7 100644
--- a/src/music.c
+++ b/src/music.c
@@ -215,7 +215,7 @@ static void drawSwitch(Music* music, s32 x, s32 y, const char* label, s32 value,
 
 static tic_track* getTrack(Music* music)
 {
-	return &music->tic->cart.bank.music.tracks.data[music->track];
+	return &getBankMusic()->tracks.data[music->track];
 }
 
 static s32 getRows(Music* music)
@@ -368,7 +368,7 @@ static tic_track_pattern* getPattern(Music* music, s32 channel)
 {
 	s32 patternId = tic_tool_get_pattern_id(getTrack(music), music->tracker.frame, channel);
 
-	return patternId ? &music->tic->cart.bank.music.patterns.data[patternId - PATTERN_START] : NULL;
+	return patternId ? &getBankMusic()->patterns.data[patternId - PATTERN_START] : NULL;
 }
 
 static tic_track_pattern* getChannelPattern(Music* music)
diff --git a/src/sfx.c b/src/sfx.c
index 8dc0efb..1de5c4c 100644
--- a/src/sfx.c
+++ b/src/sfx.c
@@ -106,7 +106,7 @@ static void drawSwitch(Sfx* sfx, s32 x, s32 y, const char* label, s32 value, voi
 
 static tic_sound_effect* getEffect(Sfx* sfx)
 {
-	return sfx->tic->cart.bank.sfx.data + sfx->index;
+	return getBankSfx()->data + sfx->index;
 }
 
 static void setIndex(Sfx* sfx, s32 delta)
@@ -169,7 +169,7 @@ static void drawLoopPanel(Sfx* sfx, s32 x, s32 y)
 
 static tic_waveform* getWaveformById(Sfx* sfx, s32 i)
 {
-	return &sfx->tic->cart.bank.sfx.waveform.envelopes[i];
+	return &getBankSfx()->waveform.envelopes[i];
 }
 
 static tic_waveform* getWaveform(Sfx* sfx)
diff --git a/src/sprite.c b/src/sprite.c
index ac693c4..8a9179a 100644
--- a/src/sprite.c
+++ b/src/sprite.c
@@ -38,12 +38,12 @@ static void clearCanvasSelection(Sprite* sprite)
 
 static u8 getSheetPixel(Sprite* sprite, s32 x, s32 y)
 {
-	return getSpritePixel(sprite->tic->cart.bank.tiles.data, x, sprite->index >= TIC_BANK_SPRITES ? y + TIC_SPRITESHEET_SIZE: y);
+	return getSpritePixel(getBankTiles()->data, x, sprite->index >= TIC_BANK_SPRITES ? y + TIC_SPRITESHEET_SIZE: y);
 }
 
 static void setSheetPixel(Sprite* sprite, s32 x, s32 y, u8 color)
 {
-	setSpritePixel(sprite->tic->cart.bank.tiles.data, x, sprite->index >= TIC_BANK_SPRITES ? y + TIC_SPRITESHEET_SIZE: y, color);
+	setSpritePixel(getBankTiles()->data, x, sprite->index >= TIC_BANK_SPRITES ? y + TIC_SPRITESHEET_SIZE: y, color);
 }
 
 static s32 getIndexPosX(Sprite* sprite)
@@ -672,8 +672,8 @@ static void drawRGBSlider(Sprite* sprite, s32 x, s32 y, u8* value)
 
 static void pasteColor(Sprite* sprite)
 {
-	fromClipboard(sprite->tic->cart.bank.palette.data, sizeof(tic_palette), false, true);
-	fromClipboard(&sprite->tic->cart.bank.palette.colors[sprite->color], sizeof(tic_rgb), false, true);
+	fromClipboard(getBankPalette()->data, sizeof(tic_palette), false, true);
+	fromClipboard(&getBankPalette()->colors[sprite->color], sizeof(tic_rgb), false, true);
 }
 
 static void drawRGBTools(Sprite* sprite, s32 x, s32 y)
@@ -708,7 +708,7 @@ static void drawRGBTools(Sprite* sprite, s32 x, s32 y)
 				down = true;
 
 			if(checkMouseClick(&rect, SDL_BUTTON_LEFT))
-				toClipboard(sprite->tic->cart.bank.palette.data, sizeof(tic_palette), false);
+				toClipboard(getBankPalette()->data, sizeof(tic_palette), false);
 		}
 
 		if(down)
@@ -772,7 +772,7 @@ static void drawRGBSliders(Sprite* sprite, s32 x, s32 y)
 {
 	enum{Gap = 6, Count = sizeof(tic_rgb)};
 
-	u8* data = &sprite->tic->cart.bank.palette.data[sprite->color * Count];
+	u8* data = &getBankPalette()->data[sprite->color * Count];
 
 	for(s32 i = 0; i < Count; i++)
 		drawRGBSlider(sprite, x, y + Gap*i, &data[i]);
@@ -784,7 +784,7 @@ static void drawRGBSlidersOvr(Sprite* sprite, s32 x, s32 y)
 {
 	enum{Gap = 6, Count = sizeof(tic_rgb), Size = CANVAS_SIZE, Max = 255};
 
-	u8* data = &sprite->tic->cart.bank.palette.data[sprite->color * Count];
+	u8* data = &getBankPalette()->data[sprite->color * Count];
 
 	for(s32 i = 0; i < Count; i++)
 	{
@@ -959,7 +959,7 @@ static void drawSheetOvr(Sprite* sprite, s32 x, s32 y)
 
 	for(s32 j = 0, index = (sprite->index - sprite->index % TIC_BANK_SPRITES); j < rect.h; j += TIC_SPRITESIZE)
 		for(s32 i = 0; i < rect.w; i += TIC_SPRITESIZE, index++)
-			sprite->tic->api.sprite(sprite->tic, &sprite->tic->cart.bank.tiles, index, x + i, y + j, NULL, 0);
+			sprite->tic->api.sprite(sprite->tic, getBankTiles(), index, x + i, y + j, NULL, 0);
 	{
 		s32 bx = getIndexPosX(sprite) + x - 1;
 		s32 by = getIndexPosY(sprite) + y - 1;
diff --git a/src/studio.c b/src/studio.c
index ff5837b..8c73fcf 100644
--- a/src/studio.c
+++ b/src/studio.c
@@ -74,6 +74,15 @@ typedef struct
 
 } MouseState;
 
+static const EditorMode Modes[] =
+{
+	TIC_CODE_MODE,
+	TIC_SPRITE_MODE,
+	TIC_MAP_MODE,
+	TIC_SFX_MODE,
+	TIC_MUSIC_MODE,
+};
+
 static struct
 {
 	tic80_local* tic80local;
@@ -147,7 +156,21 @@ static struct
 	struct
 	{
 		bool show;
-		s32 index;
+
+		union
+		{
+			struct
+			{
+				s32 code;
+				s32 tiles;
+				s32 map;
+				s32 sfx;
+				s32 music;
+			} index;
+
+			s32 indexes[COUNT_OF(Modes)];
+		};
+
 	} bank;
 
 	struct
@@ -260,7 +283,6 @@ static struct
 	.bank = 
 	{
 		.show = false,
-		.index = 0,
 	},
 
 	.popup =
@@ -288,6 +310,41 @@ static struct
 	.floatSamples = NULL,
 };
 
+tic_tiles* getBankTiles()
+{
+	return &studio.tic->cart.banks[studio.bank.index.tiles].tiles;
+}
+
+tic_tiles* getBankSprites()
+{
+	return &studio.tic->cart.banks[studio.bank.index.tiles].sprites;
+}
+
+tic_map* getBankMap()
+{
+	return &studio.tic->cart.banks[studio.bank.index.map].map;
+}
+
+tic_sfx* getBankSfx()
+{
+	return &studio.tic->cart.banks[studio.bank.index.sfx].sfx;
+}
+
+tic_music* getBankMusic()
+{
+	return &studio.tic->cart.banks[studio.bank.index.music].music;
+}
+
+tic_code* getBankCode()
+{
+	return &studio.tic->cart.banks[studio.bank.index.code].code;
+}
+
+tic_palette* getBankPalette()
+{
+	return &studio.tic->cart.banks[studio.bank.index.tiles].palette;
+}
+
 void playSystemSfx(s32 id)
 {
 	const tic_sound_effect* effect = &studio.tic->config.sfx.data[id];
@@ -429,15 +486,6 @@ void showTooltip(const char* text)
 	strcpy(studio.tooltip.text, text);
 }
 
-static const EditorMode Modes[] =
-{
-	TIC_CODE_MODE,
-	TIC_SPRITE_MODE,
-	TIC_MAP_MODE,
-	TIC_SFX_MODE,
-	TIC_MUSIC_MODE,
-};
-
 static void drawExtrabar(tic_mem* tic)
 {
 	enum {Size = 7};
@@ -553,6 +601,14 @@ static void drawBankIcon(s32 x, s32 y)
 	};
 
 	bool over = false;
+	s32 mode = 0;
+
+	for(s32 i = 0; i < COUNT_OF(Modes); i++)
+		if(Modes[i] == studio.mode)
+		{
+			mode = i;
+			break;
+		}
 
 	if(checkMousePos(&rect))
 	{
@@ -583,15 +639,15 @@ static void drawBankIcon(s32 x, s32 y)
 				over = true;
 
 				if(checkMouseClick(&rect, SDL_BUTTON_LEFT))
-					studio.bank.index = i;
+					studio.bank.indexes[mode] = i;
 			}
 
-			if(i == studio.bank.index)
+			if(i == studio.bank.indexes[mode])
 			{
 				tic->api.rect(tic, rect.x, rect.y, rect.w, rect.h, tic_color_red);
 			}
 
-			tic->api.draw_char(tic, '0' + i, rect.x+1, rect.y+1, i == studio.bank.index ? tic_color_white : over ? tic_color_red : tic_color_peach);
+			tic->api.draw_char(tic, '0' + i, rect.x+1, rect.y+1, i == studio.bank.indexes[mode] ? tic_color_white : over ? tic_color_red : tic_color_peach);
 		}
 	}
 	else
@@ -2212,8 +2268,8 @@ static void renderStudio()
 			music = &studio.tic->config.music;
 			break;
 		default:
-			sfx = &studio.tic->cart.bank.sfx;
-			music = &studio.tic->cart.bank.music;
+			sfx = getBankSfx();
+			music = getBankMusic();
 		}
 
 		studio.tic->api.tick_start(studio.tic, sfx, music);
@@ -2504,20 +2560,20 @@ static void onFSInitialized(FileSystem* fs)
 	studio.tic = studio.tic80local->memory;
 
 	{
-		studio.start = SDL_malloc(sizeof(Start));
-		studio.console = SDL_malloc(sizeof(Console));
-		studio.run = SDL_malloc(sizeof(Run));
-		studio.code = SDL_malloc(sizeof(Code));
-		studio.sprite = SDL_malloc(sizeof(Sprite));
-		studio.map = SDL_malloc(sizeof(Map));
-		studio.world = SDL_malloc(sizeof(World));
-		studio.sfx = SDL_malloc(sizeof(Sfx));
-		studio.music = SDL_malloc(sizeof(Music));
-		studio.config = SDL_malloc(sizeof(Config));
-		studio.keymap = SDL_malloc(sizeof(Keymap));
-		studio.dialog = SDL_malloc(sizeof(Dialog));
-		studio.menu = SDL_malloc(sizeof(Menu));
-		studio.surf = SDL_malloc(sizeof(Surf));
+		studio.start = 		SDL_malloc(sizeof(Start));
+		studio.console = 	SDL_malloc(sizeof(Console));
+		studio.run = 		SDL_malloc(sizeof(Run));
+		studio.code = 		SDL_malloc(sizeof(Code));
+		studio.sprite = 	SDL_malloc(sizeof(Sprite));
+		studio.map = 		SDL_malloc(sizeof(Map));
+		studio.world = 		SDL_malloc(sizeof(World));
+		studio.sfx = 		SDL_malloc(sizeof(Sfx));
+		studio.music = 		SDL_malloc(sizeof(Music));
+		studio.config = 	SDL_malloc(sizeof(Config));
+		studio.keymap = 	SDL_malloc(sizeof(Keymap));
+		studio.dialog = 	SDL_malloc(sizeof(Dialog));
+		studio.menu = 		SDL_malloc(sizeof(Menu));
+		studio.surf = 		SDL_malloc(sizeof(Surf));
 	}
 
 	fsMakeDir(fs, TIC_LOCAL);
@@ -2611,6 +2667,23 @@ s32 main(s32 argc, char **argv)
 
 #endif
 
+	{
+		SDL_free(studio.start);
+		SDL_free(studio.console);
+		SDL_free(studio.run);
+		SDL_free(studio.code);
+		SDL_free(studio.sprite);
+		SDL_free(studio.map);
+		SDL_free(studio.world);
+		SDL_free(studio.sfx);
+		SDL_free(studio.music);
+		SDL_free(studio.config);
+		SDL_free(studio.keymap);
+		SDL_free(studio.dialog);
+		SDL_free(studio.menu);
+		SDL_free(studio.surf);
+	}
+
 	if(studio.tic80local)
 		tic80_delete((tic80*)studio.tic80local);
 
diff --git a/src/studio.h b/src/studio.h
index 73b43e5..33f7bae 100644
--- a/src/studio.h
+++ b/src/studio.h
@@ -199,3 +199,11 @@ void gotoCode();
 void gotoSurf();
 void exitFromGameMenu();
 void runProject();
+
+tic_tiles* 		getBankTiles();
+tic_tiles* 		getBankSprites();
+tic_map* 		getBankMap();
+tic_sfx* 		getBankSfx();
+tic_music* 		getBankMusic();
+tic_code* 		getBankCode();
+tic_palette* 	getBankPalette();
diff --git a/src/world.c b/src/world.c
index 614a32a..1d4f025 100644
--- a/src/world.c
+++ b/src/world.c
@@ -105,13 +105,13 @@ void initWorld(World* world, tic_mem* tic, Map* map)
 
 	for(s32 i = 0; i < TIC80_WIDTH * TIC80_HEIGHT; i++)
 	{
-		u8 index = tic->cart.bank.map.data[i];
+		u8 index = getBankMap()->data[i];
 
 		if(index)
 		{
 			SDL_memset(colors, 0, sizeof colors);
 
-			tic_tile* tile = &tic->cart.bank.tiles.data[index];
+			tic_tile* tile = &getBankTiles()->data[index];
 
 			for(s32 p = 0; p < TIC_SPRITESIZE * TIC_SPRITESIZE; p++)
 			{