diff --git a/tools/ds_tests/spriteblend/Makefile b/tools/ds_tests/spriteblend/Makefile
new file mode 100644
index 000000000..954a45596
--- /dev/null
+++ b/tools/ds_tests/spriteblend/Makefile
@@ -0,0 +1,138 @@
+#---------------------------------------------------------------------------------
+.SUFFIXES:
+#---------------------------------------------------------------------------------
+
+ifeq ($(strip $(DEVKITARM)),)
+$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
+endif
+
+include $(DEVKITARM)/ds_rules
+
+#---------------------------------------------------------------------------------
+# TARGET is the name of the output
+# BUILD is the directory where object files & intermediate files will be placed
+# SOURCES is a list of directories containing source code
+# INCLUDES is a list of directories containing extra header files
+#---------------------------------------------------------------------------------
+TARGET		:=	$(shell basename $(CURDIR))
+BUILD		:=	build
+SOURCES		:=	source
+DATA		:=  
+INCLUDES	:=	include
+GRAPHICS	:=	data
+
+#---------------------------------------------------------------------------------
+# options for code generation
+#---------------------------------------------------------------------------------
+ARCH	:=	-mthumb -mthumb-interwork
+
+CFLAGS	:=	-g -Wall -O2\
+ 			-march=armv5te -mtune=arm946e-s -fomit-frame-pointer\
+			-ffast-math \
+			$(ARCH)
+
+CFLAGS	+=	$(INCLUDE) -DARM9
+CXXFLAGS	:= $(CFLAGS) -fno-rtti -fno-exceptions
+
+ASFLAGS	:=	-g $(ARCH)
+LDFLAGS	=	-specs=ds_arm9.specs -g $(ARCH)  -Wl,-Map,$(notdir $*.map)
+
+#---------------------------------------------------------------------------------
+# any extra libraries we wish to link with the project
+#---------------------------------------------------------------------------------
+LIBS	:= -lnds9
+ 
+ 
+#---------------------------------------------------------------------------------
+# list of directories containing libraries, this must be the top level containing
+# include and lib
+#---------------------------------------------------------------------------------
+LIBDIRS	:=	$(LIBNDS)
+ 
+#---------------------------------------------------------------------------------
+# no real need to edit anything past this point unless you need to add additional
+# rules for different file extensions
+#---------------------------------------------------------------------------------
+ifneq ($(BUILD),$(notdir $(CURDIR)))
+#---------------------------------------------------------------------------------
+ 
+export OUTPUT	:=	$(CURDIR)/$(TARGET)
+ 
+export VPATH	:=	$(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
+					$(foreach dir,$(DATA),$(CURDIR)/$(dir)) \
+					$(foreach dir,$(GRAPHICS),$(CURDIR)/$(dir))
+
+export DEPSDIR	:=	$(CURDIR)/$(BUILD)
+
+CFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
+CPPFILES	:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
+SFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
+BINFILES	:=	$(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
+PNGFILES	:=	$(foreach dir,$(GRAPHICS),$(notdir $(wildcard $(dir)/*.png)))
+
+#---------------------------------------------------------------------------------
+# use CXX for linking C++ projects, CC for standard C
+#---------------------------------------------------------------------------------
+ifeq ($(strip $(CPPFILES)),)
+#---------------------------------------------------------------------------------
+	export LD	:=	$(CC)
+#---------------------------------------------------------------------------------
+else
+#---------------------------------------------------------------------------------
+	export LD	:=	$(CXX)
+#---------------------------------------------------------------------------------
+endif
+#---------------------------------------------------------------------------------
+
+export OFILES	:=	$(addsuffix .o,$(BINFILES)) \
+					$(PNGFILES:.png=.o) \
+					$(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
+ 
+export INCLUDE	:=	$(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
+					$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
+					$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
+					-I$(CURDIR)/$(BUILD)
+ 
+export LIBPATHS	:=	$(foreach dir,$(LIBDIRS),-L$(dir)/lib)
+ 
+.PHONY: $(BUILD) clean
+ 
+#---------------------------------------------------------------------------------
+$(BUILD):
+	@[ -d $@ ] || mkdir -p $@
+	@make --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
+ 
+#---------------------------------------------------------------------------------
+clean:
+	@echo clean ...
+	@rm -fr $(BUILD) $(TARGET).elf $(TARGET).nds $(TARGET).ds.gba 
+ 
+ 
+#---------------------------------------------------------------------------------
+else
+ 
+DEPENDS	:=	$(OFILES:.o=.d)
+ 
+#---------------------------------------------------------------------------------
+# main targets
+#---------------------------------------------------------------------------------
+$(OUTPUT).nds	: 	$(OUTPUT).elf
+$(OUTPUT).elf	:	$(OFILES)
+ 
+#---------------------------------------------------------------------------------
+%.bin.o	:	%.bin
+#---------------------------------------------------------------------------------
+	@echo $(notdir $<)
+	@$(bin2o)
+
+#---------------------------------------------------------------------------------
+%.s %.h	: %.png %.grit
+#---------------------------------------------------------------------------------
+	grit $< -fts -o$*
+
+ 
+-include $(DEPENDS)
+ 
+#---------------------------------------------------------------------------------------
+endif
+#---------------------------------------------------------------------------------------
diff --git a/tools/ds_tests/spriteblend/data/drunkenlogo.grit b/tools/ds_tests/spriteblend/data/drunkenlogo.grit
new file mode 100644
index 000000000..f3358514b
--- /dev/null
+++ b/tools/ds_tests/spriteblend/data/drunkenlogo.grit
@@ -0,0 +1,5 @@
+# 8 bit bitmap
+-gB8
+
+# bitmap format
+-gb
diff --git a/tools/ds_tests/spriteblend/data/drunkenlogo.png b/tools/ds_tests/spriteblend/data/drunkenlogo.png
new file mode 100644
index 000000000..ea66c9e42
Binary files /dev/null and b/tools/ds_tests/spriteblend/data/drunkenlogo.png differ
diff --git a/tools/ds_tests/spriteblend/source/template.c b/tools/ds_tests/spriteblend/source/template.c
new file mode 100644
index 000000000..0a0111b40
--- /dev/null
+++ b/tools/ds_tests/spriteblend/source/template.c
@@ -0,0 +1,97 @@
+#include <nds.h>
+#include <nds/registers_alt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "drunkenlogo.h"
+
+int main(void)
+{
+	//---------------------------------------------------------------------------------
+	int i = 0;
+	touchPosition touch;
+
+	videoSetMode(MODE_5_2D);
+	videoSetModeSub(MODE_0_2D);
+
+	vramSetBankA(VRAM_A_MAIN_BG_0x06000000);
+	vramSetBankB(VRAM_B_MAIN_SPRITE);
+
+	oamInit(&oamMain, SpriteMapping_1D_32, false);
+	/*oamInit(&oamSub, SpriteMapping_1D_32, false);*/
+    consoleDemoInit();
+	int bg3 = bgInit(3, BgType_Bmp8, BgSize_B8_256x256, 0,0);
+
+	dmaCopy(drunkenlogoBitmap, bgGetGfxPtr(bg3), drunkenlogoBitmapLen);
+	dmaCopy(drunkenlogoPal, BG_PALETTE, 256*2);
+
+	u16* gfx = oamAllocateGfx(&oamMain, SpriteSize_16x16, SpriteColorFormat_16Color);
+	/*u16* gfxSub = oamAllocateGfx(&oamSub, SpriteSize_16x16, SpriteColorFormat_256Color);*/
+    REG_BLDCNT = (1<<11) | (1<<6);
+    
+    REG_WININ = 0x3F; //display everything, including color special effects, in window 0
+    REG_WINOUT = 0x1F; //display everything, excluding color special effects, outside window 0
+    REG_WIN0H = (0<<8) | 128; //window is x (0..128)
+    REG_WIN0V = (0<<8) | 128; //window is y (0..128)
+    REG_DISPCNT |= (1<<13); //enable use of window 0
+
+	for(i = 0; i < 16 * 16 / 2; i+=1)
+	{
+		gfx[i] = 0x1111;
+	}
+
+    
+	SPRITE_PALETTE[1] = RGB15(31,31,31);
+
+    u8 eva = 0xf, evb = 0xf;
+
+	while(1)
+	{
+
+		scanKeys();
+        u32 keys = keysDown();
+
+		if(keysHeld() & KEY_TOUCH)
+			touchRead(&touch);
+        if(keys & KEY_LEFT && evb > 0)
+            evb--;
+        if(keys & KEY_RIGHT && evb < 0xf)
+            evb++;
+        if(keys & KEY_UP && eva > 0)
+            eva--;
+        if(keys & KEY_DOWN && eva < 0xf)
+            eva++;
+
+        consoleClear();
+        printf("eva %x evb %x\n", eva, evb);
+
+		oamSet(&oamMain, //main graphics engine context
+			0,           //oam index (0 to 127)  
+			touch.px, touch.py,   //x and y pixle location of the sprite
+			0,                    //priority, lower renders last (on top)
+			0,					  //this is the palette index if multiple palettes or the alpha value if bmp sprite	
+			SpriteSize_16x16,     
+			SpriteColorFormat_16Color, 
+			gfx,                  //pointer to the loaded graphics
+			-1,                  //sprite rotation data  
+			false,               //double the size when rotating?
+			false,			//hide the sprite?
+			false, false, //vflip, hflip
+			false	//apply mosaic
+			);              
+		
+		
+        /*REG_BLDCNT = 0;*/
+        REG_BLDALPHA = evb<<8|eva;
+
+        oamMain.oamMemory[0].blendMode = OBJMODE_BLENDED;
+	
+		swiWaitForVBlank();
+
+        bgUpdate();		
+		oamUpdate(&oamMain);
+	}
+
+	return 0;
+}