texture_page_ptr[0] = texel_block & 0xF;
texture_page_ptr[1] = (texel_block >> 4) & 0xF;
texture_page_ptr[2] = (texel_block >> 8) & 0xF;
texture_page_ptr[0] = texel_block & 0xF;
texture_page_ptr[1] = (texel_block >> 4) & 0xF;
texture_page_ptr[2] = (texel_block >> 8) & 0xF;