Block Attributes
textureFileYP
This attribute defines the texture file that the block will use for its y-positive (top) side. Texture files for this attribute go into the textures/blocks directory of your mod.
Examples
// Uses textures/blocks/myBlockTop.png from the mod's directory
textureFileYP[0] = "myBlockTop.png";
// ...
// Uses textures/blocks/wood.png from the minecraft.jar
textureFileYP[15] = "/wood.png";
textureFileYP[0] = "myBlockTop.png";
// ...
// Uses textures/blocks/wood.png from the minecraft.jar
textureFileYP[15] = "/wood.png";