diff --git a/emulator.c b/emulator.c
index 75249c0..593a23f 100644
--- a/emulator.c
+++ b/emulator.c
@@ -147,11 +147,14 @@ domouse(SDL_Event *event)
 {
 	int x = event->motion.x / ZOOM - PAD * 8;
 	int y = event->motion.y / ZOOM - PAD * 8;
+
+	devmouse->mem[0] = x;
+	devmouse->mem[1] = y;
 	switch(event->type) {
 	case SDL_MOUSEBUTTONUP:
+		devmouse->mem[2] = 0;
+		break;
 	case SDL_MOUSEBUTTONDOWN:
-		devmouse->mem[0] = x;
-		devmouse->mem[1] = y;
 		devmouse->mem[2] = event->button.button == SDL_BUTTON_LEFT;
 	}
 }
diff --git a/examples/mouse.usm b/examples/mouse.usm
index 968ab1c..3b61950 100644
--- a/examples/mouse.usm
+++ b/examples/mouse.usm
@@ -10,9 +10,20 @@
 BRK
 
 |c000 @FRAME 
-	,01 ,01 ( redraw color )
-	,00 ,01 ,02 IOR ( grab y )
-	,00 ,00 ,02 IOR ( grab x )
+	
+	( get mouse button, or break )
+	,02 ,02 IOR
+	,01 NEQ
+	BRK?
+
+	( print A to console on click )
+	,02 ,02 IOR
+	,41 ADD 
+	,putbyte JSR
+
+	( paint a white pixel )
+	,01 ,01 
+	,getmouse JSR
 	,putpixel JSR
 BRK 
 
@@ -23,5 +34,13 @@ BRK
 	,01 IOW ( redraw )
 	RTS
 
+@getmouse ( push y,x to stack )
+	,00 ,01 ,02 IOR ( grab y )
+	,00 ,00 ,02 IOR ( grab x )
+	RTS
+
+@putbyte ( print to console )
+	,00 IOW RTS 
+
 |d000 @ERROR BRK 
 |FFFA .RESET .FRAME .ERROR