In a large skillet, saute green pepper and onions in butter until tender. In a bowl, combine the flour, cornmeal, baking soda and salt. In another bowl, combine eggs and buttermilk; stir into dry ingredients just until moistened. Fold in the ham, sausage and green pepper mixture. Transfer to a greased 10 inch oven proof skillet or 9 inch square baking pan. Bake at 425 degrees F for 20-25 minutes or until a toothpick inserted near the center comes out clean. Serve warm. Refrigerate leftovers.